磨削淬硬中磨削区温度自动控制系统的设计  

Design of Automatic Control System of Grinding Zone Temperature in Grinding Hardening

作　　者：程伟[1,2] 王贵成[2] 梁萍[1] 

机构地区：[1]淮阴工学院,江苏淮安223003 [2]江苏大学,江苏镇江212013

出　　处：《机床与液压》2014年第3期112-114,117,共4页Machine Tool & Hydraulics

基　　金：江苏省企业博士集聚计划(2010);国家自然科学基金项目(51075192);江苏省政府留学基金资助项目

摘　　要：磨削淬硬是利用磨削区热量对工件表面进行热处理的新技术。在磨削淬硬过程中,工件表面温度的变化直接影响工件表面热处理层的质量。高温热管是一种很好的控制热量传输的器件,为了使磨削淬硬过程中工件的温度变化较小,设计一种温度控制系统,将高温热管与被磨削工件接触,利用红外辐射测温仪检测磨削加工中工件的表面温度,温度数据通过PID控制器传递用以控制高温热管与工件的接触热阻来调节工件的表面温度,从而达到控制表面淬火的要求。The grinding hardening is a new technology in which thermal of grinding zone is utilized to heat-treat the workpiece surface layer. In grinding hardening process,grinding zone temperature directly affects the quality of surface layer of heat treatment. The high temperature heat pipe is a very good device of control heat transfer. In order to make the grinding zone temperature slightly change in grinding process,a temperature automatic control system was designed. A high temperature heat pipe was contacted with the workpiece’s grinding zone. The zone temperature was measured using infrared radiation pyrometer and the temperature data were used to control the high temperature heat pipe’s thermal resistance through PID controller,which was used to adjust the contact area be-tween workpiece and high temperature heat pipe. Thus control requirements of workpiece’s surface hardening are achieved.

关 键 词：磨削淬硬 温度自动控制 高温热管 PID控制器 

分 类 号：TG156.33[金属学及工艺—热处理]