发明名称 |
Low white cast iron grinding slug |
摘要 |
A process for producing a low alloy white cast iron is disclosed. The process comprises the steps of selecting one of a group of four alloying elements for a nickel, molybdenum/copper or modified low alloy iron; the four alloying groups consisting essentially, by weight percent of about: Group 1: 2.5 to 4.0% carbon; 0.3 to 0.8% silicon; 0.3 to 0.8% manganese; 0.75 to 2.0% nickel; 0 to 0.75% chromium. Group 2: 3.0 to 4.5% carbon; 0.3 to 0.8% silicon; 0.3 to 1.0% manganese; 0 to 0.8% molybdenum; and 0.3 to 1.0% copper. Group 3: 3.0 to 4.5% carbon; 0.3 to 0.8% silicon; 0.3 to 1.0% manganese; and 0.3 to 0.8% copper; the balance being iron except for incidental impurities commonly found in cast irons; melting the alloy; casting such alloy into moulds to produce the desired product; removing the product from the moulds while its surface temperature is above the transformation temperature of the alloy; and cooling it by quenching into a liquid medium containing water and an organic polymer at a sufficiently high rate to prevent the formation of pearlite but not so high as to generate cracks in the product.
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申请公布号 |
US5034069(A) |
申请公布日期 |
1991.07.23 |
申请号 |
US19900461994 |
申请日期 |
1990.01.08 |
申请人 |
NORCAST CORPORATION |
发明人 |
FARGE, JEAN C.;LEFEBVRE, MICHEL;FORTIN, ROBERT |
分类号 |
C21D1/60;C21D5/04 |
主分类号 |
C21D1/60 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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