摘要
采用自制的千瓦级曲轴激光热处理设备，对球墨铸铁曲轴进行了激光表面热处理，研究并探讨激光热处理的各种参数及曲轴表面状态对硬化深度、宽度、硬度、耐磨性及微观组织的影响，并给出一组较佳的工艺参数及试验结果。
An investigation on the surface heat treatment of a crankshaft made of s,g.cast ironhas been carried out with a home made 1 kW CO2 laser installation,The effects of the laserpower,scanning speed,defocused length and different coatings on the microhardness, wearresistance,depth and width of the hardened layer are studied and a set of suitable technologi-cal parameters obtained.With these parameters,the hardening depth achieved exceeds 0.4mm and the hardening width exceeds 3 mm,with an average microhardness of about HV1800(HRC 63). The maximum wear is only 0.02 mm after a 600 hour desk endurance teston an engine with a laser-treated crankshaft.
出处
《华中理工大学学报》
CSCD
北大核心
1995年第1期44-48,共5页
Journal of Huazhong University of Science and Technology
基金
武汉市科学技术委员会资助项目
关键词
激光热处理
球墨铸铁
曲轴
laser heat treatment
s.g. cast iron
crankshaft
microhardness
hardening depth
wearability
