发明名称 MANUFACTURE OF TOUGH AND HARD CAST IRON
摘要 PURPOSE:To obtain tough and hard cast iron by releasing alloyed graphite cast iron contg. prescribed percentages of C, Si, Mn, Mg, Ni and Mo from a mold at a temp. in the austenite range and by heat treating the cast iron under prescribed conditions. CONSTITUTION:Alloyed graphite cast iron consisting of, by weight, 3-4.5% C, 1.5-3% Si, 0.2-1% Mn, 0.02-0.1% Mg, 0.6-1.4% Ni, 0.2-0.8% Mo and the balance Fe is melted, cast in a mold, and released from the mold at a temp. in the austenite range of 850-950 deg.C. The released cast iron is hardened by controlled cooling from 850-950 deg.C to <=150 deg.C at >=75 deg.C/min average cooling rate, and it is tempered at 400-650 deg.C.
申请公布号 JPS60177125(A) 申请公布日期 1985.09.11
申请号 JP19840031938 申请日期 1984.02.22
申请人 TOYOTA JIDOSHA KK 发明人 AOYAMA YOSHIMI
分类号 C22C37/04;C21D5/00;C22C37/10 主分类号 C22C37/04
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