齿轮钢8620RH(K)(/%:0.18~0.22C,0.17~0.26Si,0.70~0.90Mn,≤0.025P,0.015~0.025S,0.4~0.6Cr,0.4~0.7Ni,0.15~0.25Mo,0.015~0.045Al,≤0.010 0N)的冶炼流程为60 t BOF-LF-VD-300 mm×360mm铸坯。分析了工艺改进前BOF终点残余元...
35MnB钢由40 t EAF-LF-VD-180 mm×180 mm连铸的电弧炉流程和100 t BOF-LF-RH-200 mm×200mm连铸转炉流程冶炼。35MnB钢技术协议要求J19 HRC值为33~41。试验结果表明,电弧炉流程生产的35MnB钢J19HRC值为25~28,转炉流程生产的35MnB钢...