易切削系非调质塑料模具钢的加工性  

Mackinability of Free-Cuting Unquenched Plastic Die Steel

作　　者：吴晓春[1] 周宏[1] 吴秀英 崔昆[1] 

机构地区：[1]华中理工大学

出　　处：《机械工程材料》1996年第1期39-42,共4页Materials For Mechanical Engineering

摘　　要：研究了易切削系非调质型塑料模具钢的加工性能，通过诸项切削加工性对比实验证实，该塑料模具钢的可切削加工性能优于４５钢调质，并通过磨削、抛光性能实验证明该钢具有良好的磨、抛性能，分析了Ｓ系、Ｓ－ＲＥ系以及Ｓ－Ｃａ－ＲＥ系钢的易切削相，探讨了易切削机理，这主要是易切型夹杂物在切削中起应力集中源、包裹和润滑作用。The machinability of the free-cutting unquenched plastic die steels was studied. Compared with the commercial 0.45Wt% carbon steel as-queue bed /tempered, the steels we re proved to besuperior to the latter in machinability including chipbreakability, cutting force, tool life, machined surface, etc. The steels were proved of fine grind-polishability by grinding and polishing experiments too.The free-cutting phases in the S steel, S-RE steel and S-Ca-RE steel were analysed.It was discussedthat the free-cutting mechanism is mainly because of its inclusions which play important role in stressconcentration, lubrication and encasing.

关 键 词：非调质钢 易切削钢 模具钢 塑料加工 

分 类 号：TG142.45[一般工业技术—材料科学与工程]