采用40 t电弧炉-LF-VD-3.7 t锭模铸-轧制工艺开发了20MnCr5H-1高品质齿轮钢（/%：0.17-0.22C,≤0.12Si,1.0-1.5Mn,≤0.035P,0.015-0.03......