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本文是作者根据实际生产经验,提出对冷锻用钢的质量要求。对某些国外资料也提出了一些不同的看法,希望能引起冷锻工作者的注意。一、钢材表面质量的要求我们曾对ML2、ML10F、ML15F、ML35钢坯料冷锻生产的GB51、GB52、GB54三种有表面裂缝的螺母产品进行过一季度的统计,结果发现由于钢材表面有裂缝、折迭和严重的麻点缺陷所造成的约占全部裂缝产品的85%左右。冷顶锻试验表明:ML2、ML3、
This article is based on the actual production experience of the author put forward the quality requirements for cold forging steel. Some foreign materials also made some different views, hoping to arouse the attention of cold forging workers. First, the steel surface quality requirements We have on the ML2, ML10F, ML15F, ML35 billet cold forging production of GB51, GB52, GB54 have three kinds of cracks in the nut products for the first quarter statistics and found that due to the steel surface cracks , Folding and serious pitting defects caused by about 85% of all crack products. Cold forging test showed that: ML2, ML3,