定向凝固高温合金DZ4的磨削烧伤机理  

Grinding Burn Mechanism of New Type Superalloy

作　　者：陈明[1] 李晓天[1] 孙方宏[1] 项玉成 薛秉源[1] 

机构地区：[1]上海交通大学机械工程学院,上海200030

出　　处：《上海交通大学学报》2000年第10期1342-1346,共5页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金资助项目! ( 5970 50 14)

摘　　要：为解决定向凝固高温合金 DZ4在磨削加工中极易发生的磨削烧伤问题 ,采用先进的测试方法 ,对磨削过程中磨削力、磨削温度、工件表面形貌、表面层残余应力分布、表面层显微硬度、表面层金相组织等变化规律进行了分析研究 ,揭示出该种新型高温合金材料磨削烧伤机理 .旨在为寻求优化的高效、高精度磨削加工工艺提供理论及试验依据 .Directionally solidified nickel- based superalloy DZ4 is a kind of very importantstructural mater- ial.Grinding burn usually occurs in the grinding process.This paper studied the grinding mechanism of this new type superalloy on the base of systematical analysis of variable characteristics of the grinding force,grinding temperature,topography of ground surface,residual stress distribution and hardness dis- tribution of surface layer,as well as morphology of surface layer from a metallographical point.The re- sults are beneficial to grinding this new type superalloy with high efficiency and high precision.

关 键 词：磨削烧伤 高温合金 磨削机理 磨削业 

分 类 号：TG580.14[金属学及工艺—金属切削加工及机床]