Your search for TiC resulted in 197 matches...
The paper presents the results of studies on the effect of external pressure, applied on metal during squeeze casting process, on the structure of AlSi7Mg alloy. The obtained results were completed with examination...
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The article presents the results of thermogravimetric (TG) investigations of a polystyrene foundry model. The study was conducted for three polystyrenes - Owipian (Syntos Oświęcim), copolymer PS and PSX (France)....
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In this work, the course of peritectic L + Al6Mn(Fe) → α-Al + α-AlMnFeSi transformation taking place in AlFeMnSi alloys was traced. The specific microstructural effects in the transformed primary p...
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The article presents the ecological aspects of the lost foam technology. The results of environmental tests carried out on an experimental stand for pouring of moulds with liquid metal and knocking out of castings ...
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The article presents the results of laboratory tests on the binding characteristics of moulding sands with inorganic geopolymer binders and for comparison with furan resin and alkaline resin, designed for casting o...
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The article presents the developed research methodology that allows the evaluation of the kinetics of solidification and cooling of pattern material in a metal mould ( die). The apparatus was described and the resu...
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In this work the results of the application of different imaging techniques and image analysis systems for measurements of chosen either stereological parameters or geometrical features for some of morphology model...
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The first part of the publication presents the structure of global power industry market. Fundamental technologies of heat and electricity production in conventional coal combustion processes are considered,with sp...
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This paper presents the results of measurements of thermophysical properties of automotive brake discs made from gray cast iron. The samples were tested before and after operation in the braking system. Thermal con...
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The article presents the results of model tests and studies of the sand reclamation from waste moulding and core mixtures with an inorganic geopolymer binder, used in the trial production of pilot castings...
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This paper discusses some theoretical aspects of the design of ultralight materials. Potential application of syntactic foams in the fabrication of composites lighter than air is also analyzed. Carbon allotropic fo...
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The article presents the results of research on the selection of optimum technological parameters of the hot-chamber die casting machine operation to make castings in AM50 magnesium alloy, coated next with the deco...
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Smart nanomaterials are those whose structures and components exhibit peculiar and welldeveloped physical, chemical, and biological properties caused by their nanosized dimensions. It is nanotechnology that deals w...
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To determine the kinetics of ausferrite decomposition in copper-nickel ADI, a kinetic model of Johnson-Mehl-Avrami (JMA), designed for the investigations under non-isothermal conditions, was used. Applying the Netz...
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Ordered cellular constructions are an important structural element used in armaments, aerospace and automotive industry. The use of Rapid Prototyping technique and control of solidification process allow making cas...
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The characteristics of goldsmith objects included in the collection of Regional Museum in Torun were presented. The results of the chemical composition measurements taken by XRF method on a Niton device on hundreds...
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The article presents the basic characteristics of the pollutants emitted in the process of foundry mould manufacture. A method to reduce harmful emissions through the application of advanced oxidation was described...
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In the course of the executed project, a series of investigations has been made to establish what effect a refined inoculant applied on the mould surface can have on changes in the surface structure of castings mad...
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Using available thermo-physical parameters, the paper describes the simulation studies of metal flow in mould filled with an evaporative pattern. The final properties of casting made in a lost-foam process are grea...
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The paper presents the results of examinations of composite samples in which the reinforcement is waste fly ash from power plants, while matrix is an aluminium (A8). The agglomerates of master composite obtained by...
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The article presents the most important results of the research, development and implementation studies carried out under one of the Target Projects as a result of cooperation between the CERTECH Technical and Comm...
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The article discusses problems related with the evaluation of the effect of modification and multivariant heat treatment on mechanical properties of CuAl10Fe3Mn2 aluminium bronze. The evaluation was based on the re...
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The role of interstitial elements, i.e. nitrogen and boron, in the process of ductile iron solidification and heat treatment of castings was discussed. Austempering of ductile iron aims at obtaining an ausferritic ...
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The study presents the results of examinations carried out on ultra-light magnesium- and lithiumbased alloys of two-phase α-β structure and monophase β structure using scanning electron microscopy w...
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The study describes the attempts to use a mechanochemical synthesis in the fabrication of composites based on Cu-Al intermetallic compounds reinforced with homogeneously distributed ceramic Al2O3...
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The wettability tests were carried out under a vacuum at 700°C in the drop/substrate couples, where drop is pure aluminium (99.999%), substrate - Ni (99.8%) and Niox (oxidized). Test were carried out...
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Comparative studies were made on modification of aluminium CuAl10Fe3Mn2 bronze by application of modifiers affecting changes in surface properties (Na, K, Ca, Mg) and providing additional substrates for crystallisa...
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As expected, the increasing demand for magnesium alloy castings has already become a fact. Considering this situation, a rich program of the studies on this particular subject has been initiated and put into operat...
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The effect of heat treatment on structure and mechanical properties of B1044 (CuAl10Fe4Ni4) alloy was investigated. In the examined alloy, the content of aluminium, iron and nickel results in the formation of struc...
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High-alloyed Cr-Ni-Cu cast steel with additions of Mo and Nb and high nitrogen content was melted. The cast test ingots were subjected to a heat treatment. Metallographic examinations were made under an optical mic...
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The GX5CrNiCu16-4 martensitic cast steel with graded nitrogen content comprised in a range of 0,064-0,12% was melted; the chemical composition, including oxygen and nitrogen content, was determined. Test bars were ...
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The principles of operation of a portable X-ray microfluorescence analyser of the chemical composition were described. A short characteristic of the Niton device was also given. Examples of chemical compositions of...
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A device for the fabrication of ingots from cast iron of globular non-dendritic structure of the primary phase was designed and made, using the principle of overflow on the Slope Cooling Plate, known as the SCP met...
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The article examines possible use of analytical and numerical models of casting defects of a void type in determination of local increase of stresses in the vicinity of casting defect. The stress level can be one o...
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Development of instruments for micro- and macrostructure design in functionally graded materials is a challenge for the modern industry. In this path, mathematical modeling and numerical simulation are extremely he...
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Hydroxyapatite [1-3] of structural formula Ca10(PO)6(OH)2 (HAp) and calcium triphosphate Ca3(PO)2 (TCP) powder sand suspensions have been characterized physico...
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Dental tools are sometimes damaged as a results of exploitation or during sterilization and desinfection. The aim of durability improving of dental borers and tweezers and increasing of the biocompatibility was mod...
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The aim of this publication is to assess the effect of different types of the standard heat treatment on changes in mechanical properties at room temperature of magnesium alloy from AZ91 family referred to the same...
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The article presents the results of high-temperature investigations of the modified samples of hydrated sodium silicate and of the sand mixtures with an addition of this compound. To improve the knocking out proper...
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The article is devoted to complex studies of diamond-like coatings applied by the PAPVD technique to improve the surface of medical tools and implants in terms of better anticorrosive behaviour and biocompatibility...
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The article presents the results of laboratory and industrial tests on the application of a new geopolymer Rudal A binder used in production of moulding and core sands for castings from carbon and alloyed cast stee...
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The study presents the results of structure examinations and mechanical tests carried out on coatings based on Cr3Cr2-NiCr chromium carbide, applied onto the surface of ductile iron castings. The chromiu...
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The article gives the results obtained in a fragment of the studies, carried out under a statutory activity, on optimising of the foundry sand technology with new modified inorganic binders, chemically bonded and C...
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The article is a compilation of the most important results obtained during execution of own research project regarding the possibility of using fly ash formed during combustion of hard coal as a base granular material ...
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Nanomaterials extend the range of their application in human activities. The past few years have faced a considerable increase of interest in various aspects of the application of nanotechnology in liquid phase met...
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This work reviews the current state of research regarding high temperature oxidation resistance of Fe-Cr-Al steels, that belong to a family of AFA (Alumina Forming Alloys). The behavior of these steels in hot gases...
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The article discusses the most important results of research, development and implementation works conducted under Target Projects in years 2006-2007 at the two Polish foundries, i.e. „Radom" Fittings Factory...
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This work reviews the current state of research regarding high temperature sulphidation resistance of Fe-Cr-Al steels that belong to a family of AFA (Alumina Forming Alloys). The behavior of these steels in hot gas...
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Properly conducted heat treatment of cast magnesium alloys is a very important tool in increasing the mechanical properties of castings. Nevertheless, during high temperature annealing of castings made from magnesi...
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The second part of the publication presents the results of high temperature investigations of selected sorts of fly ash serving as a reinforcement in ALFA composites. Using graphs illustrating changes of sample dimensions in function of temperatur...
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Problems connected with a change of Zeta potential values of soluble sodium silicate are presented. Soluble sodium silicate was made from sodium-silicate glass to thermally conditioned at a temperature of 1350°C fo...
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The article presents the results of research on the emission of chemical compounds with an unpleasant odour during heating of polystyrene patterns and a solution for reducing their perception in the environment. Studies were carried out using an e...
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The article presents the results of investigations of a technology for fabrication of decorative and protective chromate coatings on die castings made from AZ91 (MgAl9Zn1) magnesium alloy. As a result of the investigat...
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One of the main parameters determining proper course of the pattern evaporation process, which takes place in parallel with pouring of the foundry mould with metal, are properties of the ceramic coating applied on a po...
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The aim of this study was to determine the effect of temperature and Zn content on the solderability of Cu substrates with liquid Sn-xZn alloys (4.5; 90; 95 wt.% Zn). Solderability tests were carried out by the wetting balance test which allows th...
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The paper presents the results of laboratory and industrial tests undertaken in order to develop and implement in foundry production the high-quality bentonite made from the raw dried material and selected fractions formed in the production of hyg...
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The emission of odours associated with the activities of various industrial plants and facilities is treated as a nuisance, and not as a factor harmful to humans and the environment. The smell, even when subjectively perceived as pleasant, with a ...
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The article presents how to perform a chemical modification of the soluble sodium silicate with morphoactive, organic compounds. An attempt was made to determine the effect of chemical modifiers of the soluble sodium silicate on its physicochemica...
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The effect of solution heat treatment with jet cooling and modification with C + Ca and CaC2 on the behaviour of BA1044 alloy in as-cast state, and after solution heat treatment and toughening was examined. The microjet modification and...
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This paper presents the results of research work related with the effect of calcium on the microstructure and mechanical properties of AZ91 alloy. Samples of appropriately prepared alloy grades containing the addition of calcium in different conce...
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The aim of this study was to determine the effect of temperature and zinc content on the solderability of nickel substrates with liquid Sn-xZn alloys (4.5, 90, 95 wt% Zn). Solderability tests were carried out by the wetting balance method which al...
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This article presents the results of research on selected thermophysical properties of the commercial F3S.10S, F3S.20S, F3S.30S metal matrix composites (MMCs) based on the Al359 alloy matrix reinforced with SiC particles added in an amount of 10 v...
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The study adresses the problem of the damping capacity of metal matrix composites based on A359 alloy reinforced with 10%, 20% and 30% SiCp, subjected to multiple remelting. The aim of the research was to prove that the recycling proces...
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The paper presents the results of examinations of composite samples in which the reinforcement is waste fly ash from power plants, while matrix is aluminum (99,98 wt.%). The agglomerates of master composite obtained by mechanical alloying were sub...
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Melting of cast steel based on Fe-Al system was described. Problems of technological nature related with the melting process performance, starting with computer simulation and in the casting treatment ending, were discussed. The outcome of the stu...
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This paper presents the results of research on an impact of external pressure applied in the squeeze casting process on the structure of PA9 alloy. Samples for the research were obtained by casting the tested PA9 alloy into a die under a varying p...
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This article takes the form of a discussion. It presents problems concerning the determination of particle size and average diameter. The particles were analysed as the dispersed phase in various systems, including colloidal. It describes the basi...
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The results of technological tests (chemical composition, solidification curves, microstructure) of ductile cast iron smelting in the Foundry Research Institute in an induction furnace. In the case of crystallization of spheroidal graphite no long...
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The article presents a method of modification of ceramic mould surface on the boundary between lost-wax model - ceramics by using a layer of nickel on a disposable model made of a specified type of polymer e.g. polymethyl methacrylate (PMMA) and t...
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In the present paper research results of microstructure and selected mechanical properties of composite on EN AC-AlSi11 alloy matrix with reinforcement in the form of particle of Cr-Fe-C alloy (composite ex situ) and carbonitrides Ti, Zr, V (compo...
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The article attempts to compare the resistance of austempered ductile cast iron and S215 steel to dynamic loads. The samples were subject to research using the Taylor test methodology at different speeds of deformation, in order to determine the c...
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The paper presents a procedure that allows a quantitative comparative assessment of the flexibility of different design solutions of guide grate cast. Guide grate is an essential component part in all types of technological equipment structures us...
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The aim of this study was to determine the impact of technological factors (surface treatment and contact time) on the kinetics of wetting of nickel substrates by a liquid aluminum alloy. Wetting kinetics studies were carried out in vacuum at 700&...
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The article presents a course of static corrosion of spheroidal ferritic cast iron, austenite stainless steel X2CrNi19-12 (00H18N10) and samples of low-alloy construction steel 12CrMo4-5 (15HM) in liquid tin. The tests were performed at temperatur...
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The article presents results of an investigation which constitutes a section of research under the project POIG.01.01.02-00-015/09 "Advanced materials and technologies", one of the aims which is the introduction of new ecological inorganic binders...
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The article presents results of laboratory tests to develop a new generation of foundry hybrid bentonite. Hybrid bentonite is intended for use as binder for synthetic moulding sands and sandmixes. In the previous practice foundry bentonite was a p...
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Methods of direct measurement of air pollution increasingly used in environmental studies are not standardised and do not meet the requirements of the applicable European standards. The article presents studies on the determination of paramet...
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This article presents the latest tendencies within the scope of the application of computer simulation in the process of developing new solutions, including solutions in foundry practice. The functioning of Integrated Computational Materials Engin...
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One of the factors which influence development tendencies within the scope of moulding sands used in foundry practice is environmental protection. Hence, while assessing technologies, the composition of utilised materials and emissions of harmful ...
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The presented paper is a description of the significance of CCT and TTT diagrams in the processes of heat treatment of ductile cast iron, and especially during the production of ADI. A review of literature in the subject was made. Own research inc...
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In this study a simple procedure for the in situ identification of the intermetallic phase precipitates in the interdendritic eutectic in both wrought and cast AlFeMnSi alloys has been established and then verified by ...
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Research was carried out on the technological properties of plaster mixtures developed at the Foundry Research Institute. Developed were mixtures of ceramic compounds in which the basic material was synthetic plaster. ...
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Research was carried out on the technological properties of plaster mixtures developed at the Foundry Research Institute. Developed were mixtures of ceramic compounds in which the basic material was synthetic plaster. ...
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The presented article is the first in the series, which presents research related to the improvement of technology for producing brake blocks for the railway industry in the Spomel foundry in Lębork.The cooperation with the Foundry Research...
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The article presents preliminary results of research on ablation casting technology. The guidelines for the design of equipment to carry out the process are described. Based on the above mentioned instructions a test stand was developed and built....
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On the basis of assumed curves of treatment the distribution of temperature fields was determined in selected model castings achieved during heat analysis, then assuming these values as boundary conditions an integrated strength analysis was carri...
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Temperature properties of fly ash are closely correlated to the chemical composition and proportions of the main compounds, comprising the waste material. Statistical analysis of data obtained during the measurement of fusibility, showed a high co...
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The article discusses the research problematics of machines and equipment for casting technologies, with the consideration of the scope of research performed in Poland in the second half of the twentieth century at main domestic university facilit...
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Recycling of magnesium alloys is a complex issue not only because of their high reactivity and flammability even below melting temperature, but primarily because of a lack of equipment and experience in foundries. Nonetheless the environmental fac...
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In this work, issues regarding the energy sector in Poland are described in terms of subcritical technology which is commonly used and plays the most important role in electric power production. In such technology steam temperature reaches 500-530...
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The presented article is the second in the series, which presents research related to the improvement of technology for producing brake blocks for the railway industry in the Spomel foundry in Lębork. The cooperation with the Foundry Research Ins...
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The paper presents results of wrought alloys casting trials under external pressure. Three alloys were used in the experiment - namely: 2024, 6061 and 7075. The examinations were conducted on squeeze cast parts that solidified under high pressure ...
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Tests were conducted to develop a new generation of functional nano-coatings used in the foundry industry. The research focused on the introduction of modern and innovative coatings based on nanoparticles of cast elements and active chemical compo...
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This paper presents the method of investigating the sol-gel transition by constant speed removal of plates, made of suitable substrate, from an aqueous colloidal binder. The thickness of the deposited colloidal binder layer depends on the particle...
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The aim of this study was to determine the effect of the chemical composition of Ni-P coating on the wettability kinetics of SAC305 liquid solder in contact with the Ni-P coating. The study was conducted in vacuum, at 230°C, for 5 minutes, usi...
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The launch of new methods in the technical metrology area is a material factor determining the quality of the products. The paper presents the methodology of analysis of metrological tests conducted with the use of computed tomography and an optic...
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Cellular structures are critical components which perform as energy absorbers in the defense, aerospace and automotive industries. Simultaneous application of topological optimisation algorithms for strength forming, solidification simulation soft...
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This article presents the evaluation method for nitrated and carbonitrided layer on the surface of the examined material (steel). The above mentioned method comprises the measurement of layer thickness, as well as decomposition of elements occurri...
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The purpose of this paper is to evaluate the internal structure of alloys similar to AlSi9Mg (EN AC-43300), made with the counter-gravity low-pressure air-melted process (CLA) and with the gravity casting process. The X-ray computed tomography (CT...
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Based on the results of dilatometric investigations, parameters of standard single-step and multi-step (or non-isothermal) ADI heat treatment were optimised. The optimisation was based on analysis of the heat treatment processes simulated under la...
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The article presents the results of preliminary studies on the possible application of innovative activation treatments of inorganic binders during the reclamation of waste water glass moulding sands hardened by conventional drying. The test mould...
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The article presents the results of tests and studies carried out within the framework of statutory activities on various additives to moulding sands based on water-soluble inorganic binders for ablative knocking out of castings. As a result of te...
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The effect of tungsten on the solidification process, microstructure and mechanical properties of silumin 226 under the conditions close to equilibrium during pressure die casting was discussed. An increase in both mechanical and plastic propertie...
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The studies of the drop-size effect on the wetting kinetics of the nickel substrate by lead-free solder were performed by the sessile drop method in a vacuum at a temperature of 260°C.In this work, Sn-based alloy SAC305 (Ag - 3.0 wt. %, ...
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The article presents the results of research on the possibilities of utilizing waste moulding sands with silicate and geopolymer binders in the production of autoclaved cellular concrete. The high content of silica in the waste moulding and core s...
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The paper presents the results of analysis of gases formed under the impact of high temperature acting on moulding sands with the addition of selected organic resins and hardeners, commonly used in foundries as binders for these sands. As a resear...
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Casting manufacture depends on many factors. Technical specifications determine the required quality, which is essential for casting acceptance or rejection. Practice shows that making castings without defects is simply not possible. However, the ...
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The results of studies of quartz wettability by an ecological foundry binder are presented. Water glass modified with nanoparticles of metal oxides, such as: MgO, Al2O3 and ZnO in organic solvents (methanol or propanol) was u...
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In this work, an analysis of the solidification course of the AlFeMnSi alloys was carried out in the Al alloys of Fe, Mn, and Si concentrations in a range supplementary for those examined until now. The morphology of the pre-dendrite and pre-eutec...
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The article presents the results of studies of the oxidation process conducted at 900°C for 12 hours in an atmosphere of water vapour on cast heat-resistant steel with a diversified structure (ferritic-austenitic, austenitic, and austenitic wi...
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The work focuses on tribological tests of G200CrNiMo4-3-3 cast steel in the state without modification as well as after modification with FeSi and FeB. The FeSi modification reduced the secondary cementite precipitation in the Widmanstätten p...
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The article describes several variations of the semi-solid metal processing (SSM) technique rendering castings with non-dendritic structure and significantly improved mechanical properties. The metal slurry was produced using the Rapid Slurry Form...
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The aim of the study was to determine the possibilities and conditions for the use of a multi-channel digital recorder to control cast iron quality by rapid thermal analysis. A computer program cooperating with a digital recorder was developed. It...
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Computer programs are now a common tool aiding the engineer’s work on structure design. The design of foundry moulds used in the pressure die casting process, based on the casting design and effectively utilising the ability to create 3D ima...
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The subject of the study is the analysis of the microstructure and mechanical properties of cast G200CrNiMo4-3-3 steel. The investigated alloyed cast steel, containing approximately 2% C, is nearly an ideal material for the hot mill work rolls, an...
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An attempt was made to develop a mathematical model and apply this model in numerical analysis to the drying process of multi-layer ceramic moulds used in investment casting. The numerical analysis carried out in a FLOW-3D program was meant to ser...
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A new ledeburite cast steel was designed based on a matrix precipitation hardened with intermetallic compounds of a chemical composition enriched by adding about 4.25% V totally balanced with carbon. A martensitic-austenitic matrix with a ledeburi...
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Microscopic observations and quantitative analysis of the microstructure image were used to analyze the solidification course and morphology evolution in polyphase eutectics in the AlSi casting alloys with transition metals Fe and Mn. The utility ...
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Stress measurements were taken on three castings made on the laboratory scale by different technologies from ledeburite alloy steel; the obtained results were subjected to a detailed analysis. The first casting was made by a conventional technique...
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The article presents the results of investigations of the effect of selected casting parameters on the structure of casts made under high pressure by means of the casting machine produced by BÜHLER, type H630-B, out of the AlSi9Cu3 alloy from...
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In this research paper results concerning the inoculation method based on electromagnetic stirring of hypoeutectic aluminum with silicon alloys AlSi2 and AlSi7 grade are presented. The inoculation process used a stirrer supplied by current with a ...
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The article discusses the possibilities of applying direct multiple remelting as an easy as well as substantially and economically justified method of recycling composites with an A359 alloy matrix reinforced with Al2O3 parti...
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Issues related to the characteristics and production of silica sols are discussed. The impact of characteristic parameters of the structure of silica sols with different participation of SiO2, Na2O and the values of silica mo...
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The investigations of the CastExpert system have been conducted at the Foundry Research Institute for many years now, including the following: perfecting the internal structure of the system and diagnostic procedures, enriching the knowledge base ...
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In the research, a complex procedure was performed to determine the optimal parameters of thermal treatment of ductile iron with Ni, Cu, Mo and Mn additions which underwent austempering in order to obtain the ADI cast iron. Based on the constructe...
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The article discusses the thermal processes undergone by the sand mould in contact with the liquid casting alloy. Depending on the character of the atmosphere in the mould, this can be the process of combustion or pyrolysis (when there is no oxyge...
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The article presents the results of studies of hypoeutectic silumin with a molybdenum addition used for pressure casting. The studies included a thermal-derivative analysis of the crystallization process, a metallographic analysis of the microstru...
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The study was conducted for two selected 7xxx series aluminum alloys according to PN-EN 573-3:2010 - Polish version. The analysis of ingots was carried out on 7003, 7003S and 7010, 7010K alloys with a similar ratio of zirconium content. Symbols S ...
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The paper presents research on the possibility of improving the plasticity of near-eutectic AlSi11 alloy by the use of soft annealing treatment. For two assumed input quantities, i.e. temperature and duration of the soaking treatment, based on the...
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The paper indicates the existence of many references to casting in the ancient literature. Their analysis allows one to enrich the knowledge of the beginnings and the history of the development of casting - one of the oldest technical areas of hum...
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The article presents research results of the process foundry return influence in the AZ91 alloy charge on the change in the structure of castings made by the high-pressure casting method, with special consideration of the formation of non-metallic...
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The paper presents a critical analysis of the current state-of-the-art thermo-physical properties of metal composite materials, in which different types of carbon reinforcing phase have been used: graphite, diamond, carbon fibres, carbon nanotubes...
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The procedures of grain refinement and modification of a silicon eutectic in hypo- and transeutectic silumins belong to important factors shaping their microstructure as well as physico-mechanical and technological properties. Due to this fact, th...
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Loose rapid hardening masses with synthetic resins, customarily called cold-box technologies, have dominated the process of casting core production. A distinguishing feature of these technologies is the manner of mass preparation without the use o...
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The article presents an analysis of the kinetics of the hardening process of self-hardening masses. In this study, moulding sand with a quartz sand grain matrix by Sibelco, main fraction Fm 0.40; 0.32; 0.20 mm, was used. Two resins were...
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The increasing requirements concerning the emission of hazardous substances force the casting industry to search for new, more environment-friendly solutions. Such solutions may include technologies of developing moulding and core sands with the u...
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In the research, computer calculations were performed, consisting in solving the equation of population balance and the equation of the collision frequency of non-metallic inclusion particles, depending on the type of collision. In the simulations...
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The article presents the results of the pyrolysis of resin, the fast hardener as well as cured resin used in the ALPHASET technology. It is an alkaline phenolic resin of the resol type cured with an ester mixture. The pyrolysis was performed at 90...
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The die casting method is based on casting into permanent metal moulds, which makes it possible to obtain a large amount of casts with practically identical shapes. Compared to the technology of sand mould casting, this method has many advantages....
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Protective coatings are applied in order to obtain casts with an even surface, without faults. Protective coatings can contain a solvent based on water or alcohol; however, due to their harmfulness, it is recommended to limit the use of alcohol co...
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The sessile drop method was adopted to investigate the effect of multiple re-melting and casting of metal matrix composite on the structural stability of metal-ceramic slurry. Commercial aluminum matrix composite made of the A359Al alloy reinforce...
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The study analyzes the effect of Ni and Cu additions on the mechanical properties of ADI cast iron in casts with different wall thickness values. The applied experiment plan included the use of combinations of the Ni addition in the amount of 0.5%...
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The aim of the study was to determine the thermophysical characteristics of CuNiMoMn austempered ductile iron (ADI) obtained as a result of standard, one-step heat treatment performed at various temperatures.Temperature-dependent physical pr...
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Structural (FTIR) and thermo-analytic (DRIFT) studies were conducted on modified starch in the form of sodium salt of carboxymethyl starch (CMS-Na0.6) in the initial state, i.e. a colloidal solution, and in a cross-linked form prepared ...
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The article discusses the ways of modification of hydrated sodium silicate as a silicate binder of moulding sands which were applied in the studies. It determines the change in the residual strength of the moulding sand with used silicate binders ...
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The study involved the preparation of seven melts of spheroidal cast iron solution reinforced by means of an elevated content of silicon, including Cu, Mo and Ni additions. Thermal analyses of the melted cast iron were made and the ...
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The article presents the results of surface morphology of dust from dry dedusting of moulding sand with bentonite and mixtures of bentonite with lustrous carbon carrier using scanning electron microscopy. The study identifies the approxi...
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The paper presents the results of the study of Al-Si alloys with a vanadium addition used in pressure casting. The hypoeutectic Al-Si alloy grade EN AC-46000 was applied as the initial alloy. The master alloy AlV10 was introduced into the initial ...
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The article presents an analysis of the thermal process of polystyrene model gasification. It discusses the investigation results of the effect of temperature on the gasification kinetics of the examined polystyrene model samples. It analyzes the ...
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The article presents the results of investigations into castings made of four aluminum alloys produced with the use of squeeze casting technology.The investigations used the following alloys: EN AW 7022 (AlZn5Mg3Cu) and its modification with...
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Silicon nitride powder with a small addition of magnesium oxide and yttria stabilized tetragonal zirconia fine particles was used as a starting material. Multilayer graphene nanoplatelets were used as filler for silicon nitride based composites. G...
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Chromium coatings modified with nanodiamond particles were deposited on aluminum alloys. The concentration of the nanodiamond particles in the chrome plating electrolyte was from 5 to 25 g/l. The thickness of the layer varied between 30 and 70 &mu...
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A new non-combustible, non-flammable, waterproof, long-lasting, heat-insulating composite material was made of glass foam granules (derived from glass waste) and a hydraulic inorganic binder in the form of a white Portland cement solution (CE...
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One of the most significant problems that engineers and researchers face is the development of technological solutions to extend the exploitation cycle of tools and industrial machinery. The research shows there are a few possibilities to solve th...
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The aim of this work was to summarise XRD investigations performed after the tests carried out in steam oxidation conditions in the temperature range 700‒800°C for 3000 hours. In this work, two solid-solution strengthened alloys; Haynes®...
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The aim of this work was to perform high temperature tests in steam conditions at 700‒800°C for 3000 hours. In this work seven alloys were studied: Cr rich austenitic steels 309S, 310S, HR3C, and two solid-solution strengthened Ni based allo...
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A new method for synthesis of cermet composite materials was developed based on aluminothermy. Employing this method a cermet composite material with a high content of AlN crystal phase was synthesized. Fine powders of aluminum and silica glass we...
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One of the aspects of sustainable development is the reduction of the concentration of CO2 in the atmosphere. This could be achieved for example by the reduction of fuel consumption. That is why the research for the new construction and...
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Electrodes for manual arc overlay welding with coating containing nanomodifier TiN in concentrations between 0.2% and 1.5% were developed and manufactured. Samples of welded overlay layers with electrodes were both examined by electron microscopy ...
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The present paper is relevant to the investigation of the interaction between the copper alloy metal matrix (CuZn38Pb2) and the reinforcement phase (Fe) during the production of "hybrid" complex relief MMCs. An innovative production method is used...
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In this work, for the first time the results of an experimental evaluation of the high temperature behavior of molten Si-B alloy in contact with refractory materials at temperatures up to 1750°C, under static argon atmosphere (p = 850-900 mbar...
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Sintered ferrous components were coated with electrochemical chromium coatings modified with nanodiamond particles. The nanodiamond particles were produced by detonation synthesis with an average grain size 8 nm. The objective of this study was to...
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In this work, FEI SciosTM field emission gun scanning electron microscope (FEG SEM) equipped with a unique combination of analytical and imaging detectors was utilized to examine structure and chemistry of selected Si/refractory couples...
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The paper presents the results of thermophysical properties of selected vermicular graphite cast iron with nominal chemical composition of 3.70 C; 2.30 Si; 0.44 Mn; 0.054 P; 0.015 S; 0.017 Mg (wt. %). The comparative studies of the alloy were perf...
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The present work aims to study the effect of the reinforcing phase on dynamic coefficient of friction and mass wear of specimen with different compositions under various friction conditions.Porous materials with different compositions and re...
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The aim of the present study is to create a composite material possessing useful properties enabling the waste fly ash to be utilized. To obtain the final material, fly ash is subjected to separation by size and density. The innovative approach to...
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The wetting behavior and reactivity between molten cast iron (originally vermicular graphite cast iron, containing in wt. %: 3.70 C, 2.30 Si, 0.44 Mn, 0.054 P, 0.017 Mg, 0.015 S) and commercial polycrystalline alumina (Al2O3 ...
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The article discusses the results of the studies of the effect of negative pressure in the mould and the casting system on the roughness of the casts’ surfaces. Roughness tests were performed on casts made of alloy EN AB 46000...
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This study presents selected issues regarding the process of obtaining ausferrite from spheroidal cast iron without the application of thermal treatment to the casts. An ausferritic matrix, as well as strong mechanical properties, also ensures hig...
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The main aim of this investigation was to determine the microstructural degradation of Inconel 713C superalloy during creep at high homologous temperature. The alloy in as cast condition was characterized by large microstructural heterogeneity. In...
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The paper presents the results of studies of hypoeutectic silumin with a chromium addition used for pressure casting. A silumin with the composition similar to that of EN AC-46000 was used as the initial one. In order to introduce chromi...
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CADI (Carbidic ADI) - ausferritic ductile iron containing carbides - is a relatively new engineering material which exhibits excellent wear resistance and adequate impact strength. In this work the influence of two-step austempering process on sel...
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The article discusses the impact of selected operations of the casting production technological process on the workplace environment, as well as on the external environment. The casting production is associated with technological operati...
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This article presents selected research methods related to protective coatings used for sand moulds and cores in the foundry industry. The research methodology has been divided into studies of the technological properties of sand moulds and cores ...
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The fundamental aim of the study was to obtain high-alloy granulate. The study tests many possibilities of obtaining granulate with the use of the appropriate methods. The preliminary tests with the use of small melting units as well as granulate ...
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The article presents a fragment of results of R&D works carried out at the Foundry Research Institute concerning the development of modern casting materials from ferrous and non-ferrous alloys to make horseshoes with increased durability. Prob...
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In the technology of ductile iron manufacture, graphite precipitates take the form of spheroids, and this shape has the least harmful effect on cast iron mechanical properties. The strength of ductile iron depends mainly on its matrix, and hence o...
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The aim of the presented study was to obtain the element of a crushing mill beater reinforced with a composite zone, working under the conditions of high abrasive wear as well as high pressures. By means of the SHSB method, a local composite zone ...
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As a part of the international project carried out at the Foundry Research Institute in Krakow in cooperation with Energy Industries of Ohio, anopen induction furnace melting technology and gravity casting of nickel superalloys have been developed...
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Together with development of casting technology for Al-Si-Mg alloys, new groups of casting materials are undergoes its implementation into foundry practice. Al-Mg-Si casting alloys possessed several advantages such as good strength ...
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The article raises the issue of the influence of increased temperature on olivine moulding and core sands with an inorganic binder from the group of unmodified kinds of hydrated sodium silicates. Produced at laboratory conditions,&n...
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The increasing requirements of casting users regarding the dimensional accuracy and surface roughness of castings force the manufacturers, i.e. foundries, to use protective coatings on moulds and cores. Coatings are applied in ...
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In this paper an attempt was made to explain the phenomena accompanying the formation and destruction of bonded elements of moulds and cores in which a mixture of unmodified hydrated sodium silicate with a molar module of 2.9 (...
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The present study was created as a result of the execution of the project entitled "Technological conversion of nickel alloys working under extreme conditions". This project, contract No.: TANGO2/340100/NCBR/2017 of 28.04.2017 ...
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The aim of the second part of the study was to make utility castings of refractory nickel alloys, traditionally processed plastically, intended for use in extremely difficult conditions. The related technological problems and obtained ef...
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The paper presents the results of investigations into the microstructures of composite materials produced by pressure infiltration of preforms of ceramic α-Al2O3 particles with aluminium alloy EN AW-2024. In particular,...
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This article presents a method of melting zirconium alloy in an induction vacuum furnace using a thermally insulated graphite crucible. The design of the Supercast Titan induction centrifugal furnace allows for the quick melting of metal alloys in...
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The article presents the history and current state of the technology of external pressure casting in the case of High Pressure Die Casting (HPDC) and Squeeze Casting (SC). The similarities and differences between the two technologies and the commo...
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The paper presents laboratory test results for an assessment of the binding characteristics of two grades of calcium bentonite compounds for casting moulds. The bentonite compounds were chemically modified with sodium carbonate at several differen...
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Ductile iron castings are widely used in many industrial branches because of their mechanical properties. The production process of such a grade of cast iron requires the maintenance of the technological regime and the purity of initial charge mat...
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This paper presents the results of complex investigations into the thermophysical properties of 30MCDB64-M and 30NSCDV86-M cast steel, including temperature conductivity, thermal conductivity, specific heat, thermal expansion and the change of den...
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The designing of new light-weight alloys for continuous replacement of cast iron and steel parts is now the mainstream regarding energy saving and improvement of fuel consumption in the transportation sector. Parallel with the remarkable advances ...
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This study includes the results of tests related to selecting the data collection parameters for EBSD analysis, correction and modification of the EBS diffraction patterns, and use of selected functionalities of the commercial OIM s...
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The evolution of the integrated design of engineering processes and structures, including in particular advanced numerical modelling and computer simulations, has enabled a significant shortening of the implementation cycle of innovative material,...
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