| 摘要 |
White, chromium cast iron having shock and impact resistance which comprise iron together with: -Carbon: 2.2 to 3.6% by weight -Chromium: 12.0 to 30.0% by weight -Molybdenum: 0.0 to 3.0% by weight -Nickel: 0.0 to 3.0% by weight -Manganese: 0.0 to 2.0% by weight -Copper: 0.0 to 3.0% by weight -Vanadium: 0.0 to 1.5% by weight - are disclosed. The casting are produced by casting the molten alloy in a metallic permanent mold, removing the solidified casting from the mold at a temperature above the Ac3 temperature and cooling the casting sufficiently quickly to prevent the formation of pearlite as well as secondary carbide precipitation.
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