摘要
高强度球铁凸轮轴,在进行凸轮表面感应淬火过程中,凸轮旁边的退刀槽在淬火热应力的作用下,极易产生淬火裂纹。通过控制铸件合金成分,改进退刀槽结构,及采用退刀槽底部浅表性的加工去除退刀槽表面的凹孔缺陷,消除应力集中,解决了凸轮轴退刀槽底部的淬火裂纹。
During induction hardening process of high-strength ductile iron camshaft the undercut bottom near cams is very easy to fracture under the heat-stress effect of camshaft.By controlling chemistry of metal,improving undercut profile,and eliminating the pit at undercut surface with machining process to reduce stress concentration,the problem of undercut fracture is completely solved.
出处
《铸造技术》
CAS
北大核心
2010年第9期1136-1139,共4页
Foundry Technology
关键词
球墨铸铁
凸轮轴
热应力
淬火裂纹
Ductile iron
Camshaft
Heat-stress
Quench hardening fracture
