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STEEL FOR USE IN NON-HEAT TREATED CRANKSHAFT, AND NON-HEAT TREATED CRANKSHAFT

机译:用于非热处理曲轴的钢和非热处理曲轴

摘要

This steel for use in a non-heat treated crankshaft has high bending fatigue strength after fillet rolling processing and has excellent machinability. This steel for use in a non-heat treated crankshaft contains, in mass%, C: 0.37-0.50%, Si: 0.15-0.79%, Mn: 1.15-1.40%, P: 0.040% or less, S: 0.040-0.10%, Cr: 0.10-0.30%, Al: 0.022-0.050%, Ti: 0.005-0.025%, V: 0.20-0.30%, N: 0.0080-0.0180%, Mo: 0-0.30%, Cu: 0-0.8%, and Ni: 0-0.50%, and satisfies expressions (1) to (3).0.86 ≦ C+Si/7+Mn/5+Cu/15+Ni/15+Cr/9+Mo/4+V ≦ 1.10 (1)Ti/N ≦ 1.5 (2)521-353C-22.0Si-24.3Mn-7.7Cu-17.3Ni-17.7Cr-25.8Mo ≧ 305 (3)
机译:这种用于非热处理曲轴的钢在圆角滚压加工后具有较高的弯曲疲劳强度,并且切削性优异。用于非热处理曲轴的这种钢的质量百分比为C:0.37-0.50%,Si:0.15-0.79%,Mn:1.15-1.40%,P:0.040%以下,S:0.040-0.10 %,Cr:0.10-0.30%,Al:0.022-0.050%,Ti:0.005-0.025%,V:0.20-0.30%,N:0.0080-0.0180%,Mo:0-0.30%,Cu:0-0.8% ,Ni:0〜0.50%,满足式(1)〜(3)。0.86≦C + Si / 7 + Mn / 5 + Cu / 15 + Ni / 15 + Cr / 9 + Mo / 4 + V≦1.10(1)Ti / N≤1.5(2)521-353C-22.0Si-24.3Mn-7.7Cu-17.3Ni-17.7Cr-25.8Mo≧305(3)

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