The role of modification processes in ledeburitic class cast steel tribological properties

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 microstructure and properties of cast alloyed G200CrNiMo4-3-3 steel

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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Technical and economic aspects of technological conversion of Ni-based superalloys working in extreme conditions

The essence of the conversion process is the introduction of innovative in terms of materials and technology of cast parts, as components of manufactured machines and equipment in place of the traditional elements forged, welded, mechanically asse...

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Resistance of materials for patterns and core boxes to the mechanical abrasion – a new test method

Investigation results of erosion-mechanical grinding (wearing) of surfaces of foundry patterns (test samples) made of several kinds of materials are presented in the hereby paper. Investigations contained: resins, wood, painted ...

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