机床床身铸造残余应力的仿真分析研究  

Research on Machine Tool Bed Casting Residual Stress Based on Numerical Simulation

作　　者：刘杨[1] 张宇[1] 郭汉德 胡敏敏[1] LIU Yang ZHANG Yu GUO Hande HU Minmin(Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, China Shenji Group Kunming Machine Tool Co., Ltd., Kunming 650203, China)

机构地区：[1]昆明理工大学机电工程学院,云南昆明650500 [2]沈机集团昆明机床股份有限公司,云南昆明650203

出　　处：《热加工工艺》2016年第19期97-100,共4页Hot Working Technology

基　　金：国家重大科技专项(2012ZX04012-031)

摘　　要：以某机床床身铸件为研究对象,通过Procast铸造仿真软件对床身铸造应力进行仿真,得到了床身铸造过程中不同时刻的温度场、流场以及铸造落砂后应力场。分析温度场及残余应力场分布规律可以从理论上对现有的铸造工艺进行评价。结果表明,铸造过程中床身产生了大量的残余应力,残余应力分布具有一定的规律。Taking a machine tool body casting as the research object, the residual stress of machine tool body was simulated by using Procast casting simulation software, which obtained the temperature field at different times in the process of casting, flow field and stress field aiter shakeout. Through the response analysis of temperature field and residual stress field distribution, the casting process existing in theory was evaluated. The results of analysis show that the machine tool body produces a lot of residual stress in casting process, and the distribution of the residual stress is regular.

关 键 词：床身 铸造 残余应力 

分 类 号：TG251[金属学及工艺—铸造]