摘要
通过对大功率船用柴油机凸轮热处理工艺的研究,对凸轮渗碳淬火工艺进行优化,渗碳后采用二次淬火工艺,碱浴作淬火介质,研究新工艺对凸轮力学性能和显微组织的影响。结果表明,渗碳淬火后凸轮的综合力学性能得到明显提高,心部抗拉强度和冲击值分别大于931MPa和88.2J/cm2,变形量明显减小,金相组织较原工艺更加均匀合理,具有重要的理论及工程应用价值。
Through study about the heat treatment process of high-powered marine diesel engine cam, cam＇s technology of carburizing and quenching was optimized, adopting the double quenching process after carburizing, and taking alkaline bath as the quenching medium, the influences of new technology on mechanical properties and microstrcture were studied. The results show that the combination mechanical properties of cam improve obviously, surface tensile strength and impact ductility are more than 931 MPa and 88.2 J/cm2, the distortion decreases sharply, and the microstructure through new technology is more proper than the conventional method, it has important values in theory and practice.
出处
《热加工工艺》
CSCD
北大核心
2009年第6期129-132,共4页
Hot Working Technology
基金
国家自然科学基金资助项目(50875268)
教育部科学技术研究重点项目(108107)
重庆市科技攻关资助项目(CSTC2008AB3057)
关键词
凸轮
渗碳
二次淬火
力学性能
金相组织
cam
carburizing
double quenching
mechanical property
microstructure
