45钢销轴表面发纹成因分析
|
摘要
采用化学成分分析、金相显微镜、扫描电镜及能谱仪等分析手段分析了45钢销轴经机加工后出现的表面发纹。结果表明:原材料中含有的大颗粒夹杂物是产生发纹的主要原因,夹杂物在轧制过程中沿轧制方向延伸,在随后的机加工过程中暴露出来。通过保护浇铸与防止卷渣等技术可减少此类缺陷的产生。
The caplillary crack on surface of 45 steel pin shaft after machining was analyzed by means of chemical composition analysis, metallographic examination, SEM and energy spectrometer. The results show that the main cause forming the caplillary crack was the inclusion along raw material. The inclusions extend along the rolling direction during rolling and exposed during subsequent machining. The generation of such defects can be reduced by techniques such as protective casting and preventive slag rolling.
The caplillary crack on surface of 45 steel pin shaft after machining was analyzed by means of chemical composition analysis, metallographic examination, SEM and energy spectrometer. The results show that the main cause forming the caplillary crack was the inclusion along raw material. The inclusions extend along the rolling direction during rolling and exposed during subsequent machining. The generation of such defects can be reduced by techniques such as protective casting and preventive slag rolling.
引文
[1] 王忠诚,王东,肖学林.45钢火车联轴销热处理开裂分析与对策[J].热处理技术与装备,2011,32(6):37-40.
[2] 梁龙飞.45钢棒材冷拔断裂原因分析[J].热加工工艺,2002 (3):55-56.
[3] 钟芳华,李娟,纪仁峰,等.45圆钢冷拉拔后表面裂纹原因分析[J].热处理技术与装备,2016,38(6):34-36.
[4] 刘军会,杜振民,刘静,等.45钢活塞杆表面发纹产生原因[J].河北冶金,2014(4):63-65.
[5] 王博,姜周华,龚伟,等.GCr15轴承钢夹杂物及全氧含量控制工艺分析[J].材料与冶金学报,2004(6):2.
[6] 于平,陈伟庆,冯军,等.高碱度渣精炼的轴承钢中夹杂物研究[J].钢铁,2004 (7):20-23.
[2] 梁龙飞.45钢棒材冷拔断裂原因分析[J].热加工工艺,2002 (3):55-56.
[3] 钟芳华,李娟,纪仁峰,等.45圆钢冷拉拔后表面裂纹原因分析[J].热处理技术与装备,2016,38(6):34-36.
[4] 刘军会,杜振民,刘静,等.45钢活塞杆表面发纹产生原因[J].河北冶金,2014(4):63-65.
[5] 王博,姜周华,龚伟,等.GCr15轴承钢夹杂物及全氧含量控制工艺分析[J].材料与冶金学报,2004(6):2.
[6] 于平,陈伟庆,冯军,等.高碱度渣精炼的轴承钢中夹杂物研究[J].钢铁,2004 (7):20-23.