摘要
利用几组生产中常用的加工电流参数加工5Cr5WMoSi工具钢,测量表面硬度、表面粗糙度的变化,观察表面和截面的显微组织并分析其对摩擦磨损性能的影响。结果表明:电火花线切割加工5Cr5WMoSi工具钢时用1.5 A的加工电流可以获得内部结构紧凑致密的重铸层,表面粗糙度Ra达到2.24,相对于基体材料,表面硬度提高3.98%达到696.4HV,摩擦因数下降4.05%,达到0.71;相对于3.0和4.5 A加工电流,加工表面在摩擦磨损试验中的磨痕轮廓更平滑,摩擦磨损性能更优良。
The 5 Cr5 WMoSi tool steel was machined by several sets of processing current parameters commonly used in production. The surface hardness and surface roughness were measured. The surface and cross-section morphology were observed and the effects on friction and wear properties were analyzed.The results show that when the 5 Cr5 WMoSi tool steel is machined by WEDM with the processing current of 1.5 A,the recast layer with compact internal structure can be obtained. The surface roughness Ra reaches 2.24,the surface hardness increases by 3.98% to 696.4 HV,and the friction coefficient decreases by4.05% to 0.71 compared with the base material. Compared with the processing current of 3.0 and 4.5 A,the contour of wear mark is smoother in experiment,the friction and wear properties are better.
作者
王磊
弓满锋
连海山
WANG Lei;GONG Manfeng;LIAN Haishan(Institute of Mechatronic Engineering,Lingnan Normal University,Zhanjiang 524048,China)
出处
《兵器材料科学与工程》
CAS
CSCD
北大核心
2020年第1期67-72,共6页
Ordnance Material Science and Engineering
基金
国家自然科学基金（51705228）
广东省自然科学基金（2018A030307017）
广东省扬帆计划引进创新创业团队专项资助项目（2014YT02C049）
广东省教育厅项目（2016KTSCX079,2016KQNCX097）
湛江市财政科技专项竞争性分配项目（2017A02021）
岭南师范学院校级科研项目(LY1909)
