NEW COAL DUST SUBSTITUTES FOR BENTONITE MOULDING SANDS USED IN MANUFACTURE OF CASTINGS FROM MALLEABLE IRON AND ALUMINIUM ALLOYS

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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ANALYSIS OF THE STATE OF STRESS IN CAST BODIES, COVERS AND WEDGES OF THE WEDGE GATE VALVES USED IN GAS NETWORKS

Numerical analysis was carried out to establish the operating stress distribution in softsealed gate valves cast from ductile iron EN-GJS-400-15 for the gas network of PE pipes. The analysis was carried out with ANSYS software, based on data and d...

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USE OF FLOW-3D PROGRAM FOR SIMULATION OF POURING AND SOLIDIFICATION PROCESS OF DUCTILE CAST IRON CASTINGS. PART 1

Pouring and solidification of EN-GJS-400-15 ductile cast iron castings of soft wedge gate valves for PE pipes used in gas pipelines was simulated. The analysis was performed in Flow-3D program. On the basis of the two-dimension documentation provi...

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THE ASSESSMENT OF CHANGES OF THE STRUCTURE OF DUCTILE CAST IRON DEPENDING ON THE TIME AND TEMPERATURE OF THE METALLURGIC PROCESS

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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APPLICATION OF THE FLOW 3-D SOFTWARE FOR SIMULATION OF THE SPHEROIDAL IRON CASTING AND SOLIDIFICATION. PART 2

A simulation analysis was carried out on the casting and solidification of EN-GJS-400-15 spheroidal iron for production of soft-sealed wedge gates for PE pipe gas networks. The analysis was made in the Flow-3D software. Based on the engineering do...

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AN OPTIMISING NUMERICAL ANALYSIS OF THE DISTRIBUTION OF STRESSES AND DISPLACEMENTS IN THE RUBBER CURING PROCESS OF CHECK VALVE BALLS

Decreasing the density of check valve dip balls by nearly 30% results in significant decrease in the wall thickness of the domes from which the balls are assembled. During the high pressure curing process a risk occurs of excessive deformation or ...

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Measurement of gas contents in a metal bath as a method for the optimisation of deoxidation and modification procedures for cast steel

The paper presents the results of works concerning the optimisation of the process of steel melting for castings of industrial fittings in an induction furnace with an acid lining. Materials containing high activity elements such as Al, Ca, Ti, Zr...

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