湖南工程学院学报:自然科学版
湖南工程學院學報:自然科學版
호남공정학원학보:자연과학판
Journal of Hunan Institute of Engineering(Natural Science Edition)
2012年
4期
13-16
,共4页
淬火裂纹%显微组织%非金属夹杂物%热处理
淬火裂紋%顯微組織%非金屬夾雜物%熱處理
쉬화렬문%현미조직%비금속협잡물%열처리
quenching crack%microscopic structure%Non-metallic inclusions%heat treatment
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.
45鋼零件按照常規熱處理工藝進行淬火時,由于種種原因多次髮生淬裂現象.在對某45鋼齒輪進行淬火時齣現瞭淬火裂紋,通過金相分析,認為該45鋼齒輪產生淬火裂紋的原因,主要是因為顯微組織的不均勻性和非金屬夾雜物的超標所緻;而裂紋的擴展,大多是沿著組織粗大處形成延伸;結閤對45鋼齒輪淬火裂紋的分析,提齣瞭減輕或控製淬火開裂的措施.
45강령건안조상규열처리공예진행쉬화시,유우충충원인다차발생쉬렬현상.재대모45강치륜진행쉬화시출현료쉬화렬문,통과금상분석,인위해45강치륜산생쉬화렬문적원인,주요시인위현미조직적불균균성화비금속협잡물적초표소치;이렬문적확전,대다시연착조직조대처형성연신;결합대45강치륜쉬화렬문적분석,제출료감경혹공제쉬화개렬적조시.
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.