STRUCTURE FORMATION AND PROPERTIES OF Cr₃C₂ – NiCr CARBIDE COATINGS APPLIED BY PLASMA SPRAYING ONTO THE SURFACE OF DUCTILE IRON CASTINGS

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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CONVERSION COATINGS ON MAGNESIUM ALLOY DIE CASTINGS PART II: DEVELOPMENT OF A TECHNOLOGY FOR FABRICATION OF DECORATIVE AND PROTECTIVE COATINGS ON MAGNESIUM ALLOY DIE CASTINGS

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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Stress analysis in the surface layer of steel castings

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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Analysis of the drying process of moistened surface layers of sand moulds and cores on the example of moulding sand with water glass

An analysis of the drying process of surface layers of sand moulds and cores (made of loose self-hardening moulding sand with hydrated sodium silicate hardened with a liquid ester hardener) which was previously subjected to the process of moisture...

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Characteristics of new generation water and alcohol coatings and their impact on the quality of the casting surface layer

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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