成都无缝钢管厂自1986年开始,采用电渣重熔钢锭,三次试轧大直径轴承钢管取得成功。我国机械工业用轴承钢管年需量约为20万t。而轴承钢管生产难度大、检验项目多。用模锻或加工圆坯成毛坯再精加工成轴承内外座圈的工艺,生产周期长、成材率低,难以满足需要。目前,我国大部分大直径轴承钢管仍依赖进口。为改变这种状况,成都无 Chengdu seamless steel pipe plant since 1986, the use of electroslag remelting ingot, three large-diameter test-rolling bearing steel pipe to succeed. China’s machinery industry bearing steel annual demand of about 200,000 t. The bearing steel production is difficult, more test items. Forging or processing with a rough blank into a rough and then into the bearing inner and outer race process, long production cycle, the finished product rate is low, it is difficult to meet the needs. At present, most of our large diameter bearing pipe is still dependent on imports. To change this situation, Chengdu no