摘要
45钢零件按照常规热处理工艺进行淬火时,由于种种原因多次发生淬裂现象.在对某45钢齿轮进行淬火时出现了淬火裂纹,通过金相分析,认为该45钢齿轮产生淬火裂纹的原因,主要是因为显微组织的不均匀性和非金属夹杂物的超标所致;而裂纹的扩展,大多是沿着组织粗大处形成延伸;结合对45钢齿轮淬火裂纹的分析,提出了减轻或控制淬火开裂的措施.
According to conventional quenching heat treatment process, 45 steel parts tend to crack repeat- edly for all sorts of reasons. In one of 45 steel quenching gears, quenching cracking happens. Through metallographic analysis, the main reasons of 45 steel quenching cracking are the uneven microstructure and exceeding non-metallic inclusions. The extension of crack happens along the bulky microstructure. Based on the analysis of quenching cracks in 45 steel gears, measures of lessening or avoiding quenching cracking are proposed.
出处
《湖南工程学院学报（自然科学版）》
2012年第4期13-16,共4页
Journal of Hunan Institute of Engineering(Natural Science Edition)
关键词
淬火裂纹
显微组织
非金属夹杂物
热处理
quenching crack
microscopic structure
Non-metallic inclusions
heat treatment
