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- The yielding of sand and sand core must be betterHard steel, high manganese steel, chromium steel, alloy cast iron, rubber and magnetic lining board can be used as the materials for wear-resistant castings. High manganese steel has enough impact toughness, and when it is subjected to certain impact, its surface is cold hardened and becomes hard and wear-resistant. Therefore, high manganese steel is widely used to make wear-resistant casting...0 Commentarios 0 Acciones 592 Views 0 Vista previa