两种相同强度灰铸铁机加工性能研究  

Machining Performance of Two Gray Cast Irons with Same Strength

作　　者：张军涛[1] 任凤章[1] 王涛亮[1] 李玉娟[1] 罗玉梅[1] 尤玉飞[1] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471023

出　　处：《铸造技术》2013年第3期251-253,共3页Foundry Technology

基　　金：国家自然科学基金项目(51201061);河南省科技创新人才计划项目(104100510005)

摘　　要：Cu和Cr都是最常见的合金化元素,但两者的作用机理不同,Cu为石墨化元素,Cr为促进珠光体化元素;虽然通过分别单独添加Cu﹑Cr都能使灰铸铁的强度达到HT300标准,但相同强度下Cu合金化灰铸铁和Cr合金化灰铸铁的机加工性会有差别,前者的加工性能明显好于后者。Cu and Cr are the most common alloying elements, but they have different action mechanisms, Cu is graphitizing elements, Cr is promoting pearliting element; the same strength of the gray cast iron of HT300 standard can be reached by separately adding Cu or Cr, but the machinability of two gray cast iron castings is different in the same intensity, the processing performance o.f Cu-alloyed gray iron castings is significantly better than that of Cr-alloyed gray iron castings.

关 键 词：灰铸铁 CU CR 加工性能 显微组织 

分 类 号：TG251[金属学及工艺—铸造]