8620系齿轮钢相关论文
8620齿轮钢(/%:0.18~ 0.22C,0.17 ~0.26Si,0.70 ~0.90Mn,≤0.025P,0.15 ~0.23S,0.40~0.60Cr,0.40~0.70Ni,0.15 ~0.25Mo)300 mm×360 mm坯连......
8620齿轮钢(/%:0.18—0.22C,0.17—0.26Si,0.70-0.90Mn,≤0.025P,0.15-0.23S,0.40-0.60Cr,0.40—0.70Ni,0.15—0.25Mo)300mm×360mm坯连铸的中间包钢水过热......