摘要
采用正交试验 ,对激光表面合金化工艺参数进行了优化 ,分析了各工艺参数对气门摇臂合金化层质量的影响。研究表明 ,激光功率、扫描速度、离焦量和合金化粉涂层厚度等工艺参数对气门摇臂的合金化层厚度、搭接情况和表面状况等质量指标的影响不同 ;使用优化的激光工艺参数 ,对体积小、形状复杂的发动机气门摇臂工作圆弧面进行了激光表面合金化处理 ,获得的合金化层搭接较好 ,精磨后厚度在 0 4 0～ 0 6 0mm范围 ,表面硬度 >78HRA。
The effects of technical parameters of laser surface alloying processing on the qualities of the alloyed layer of rocker arm used in motor were investigated with orthogonal test,and the factors and their levels were analyzed.It is showed that the laser power,scanning speed,defocusing amount and coating layer thickness have different influence on thickness,overlap joint and surface status of the hardened layer respectively,with optimized laser surface alloying processing parameters,a uniform alloyed coating with thickness of 0.40～0.60mm(after finish grinding)and surface hardness over 78HRA is obtained.
出处
《金属热处理》
CAS
CSCD
北大核心
2004年第5期45-48,共4页
Heat Treatment of Metals
关键词
摇臂
激光表面合金化
正交试验
工艺参数
rocker arm
laser surface alloying
orthogonal test
technological parameters
