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<p>The fracture mechanism (wear) of high-chromium cast irons in a&#xa0;hydroabrasive environment was studied. The grades of cast irons for parts which require mechanical cutting were determined. It is shown that the character of hydroabrasive wear of high-chromium cast irons depends on their chemical composition, structure, and environmental properties, and is largely determined by the Rebinder’s effect, which is enhanced by the presence of abrasive particles up to 1 m in size (pulp). Different wear mechanisms of high-chromium cast irons with different content of carbon (carbides) and chromium are considered. During the surface fracture, along the dendritic structure, a&#xa0;flow of abrasive particles (pulp) is formed, which creates the main cracks. It is found that high-chromium cast irons with a&#xa0;minimum carbon content (amount of carbides) demonstrate minimal mass loss in an environment with pulp. High-chromium cast iron grades for cast parts are proposed, taking into account manufacturing and operating conditions.</p>

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Specific features of hydroabrasive wear of high-chromium cast irons

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • V. V. Netrebko,
  • O. A. Mityayev,
  • O. A. Glotka,
  • O. S. Petrashev

摘要

The fracture mechanism (wear) of high-chromium cast irons in a hydroabrasive environment was studied. The grades of cast irons for parts which require mechanical cutting were determined. It is shown that the character of hydroabrasive wear of high-chromium cast irons depends on their chemical composition, structure, and environmental properties, and is largely determined by the Rebinder’s effect, which is enhanced by the presence of abrasive particles up to 1 m in size (pulp). Different wear mechanisms of high-chromium cast irons with different content of carbon (carbides) and chromium are considered. During the surface fracture, along the dendritic structure, a flow of abrasive particles (pulp) is formed, which creates the main cracks. It is found that high-chromium cast irons with a minimum carbon content (amount of carbides) demonstrate minimal mass loss in an environment with pulp. High-chromium cast iron grades for cast parts are proposed, taking into account manufacturing and operating conditions.