模具钢激光熔覆的温度场数值计算研究  

Research on the temperature field numerical simulation of mold steel by laser cladding

作　　者：张培磊[1] 卢云龙[1] 马凯[1] 褚振涛[1] 史海川[1] 闫华[1] 

机构地区：[1]上海工程技术大学材料工程学院,上海201620

出　　处：《镇江高专学报》2013年第3期45-48,54,共5页Journal of Zhenjiang College

基　　金：上海市自然科学基金(12ZR1444500);上海工程技术大学科技发展专项--高水平项目培育专项(2012gp21)

摘　　要：使用有限元分析软件ANSYS对激光熔覆的表面温度场进行模拟与分析。使用参数化设计语言APDL实现对移动载荷的加载及ANSYS生死单元方法模拟粉末逐步熔覆的过程。结果表明,激光熔覆是典型的急冷急热加工过程,热影响区成后拖的偏椭圆状图形且面积随时间进行逐渐增大,熔池中心温度随着激光功率的增加而升高,随激光扫描速度的增加而下降,但下降幅度不大。Finite element simulation of temperature field in laser cladding process was analyzed by finite element analysis software ANSYS. Parametric Design Language APDL was used to achieve the load of the moving loads and the death element method of ANSYS was used to simulate the process of powder gradually melting. Results show that the laser cladding is a typical rapidly cooling and heating process. The heating zone is partial oval-shaped with trailing graphics and the area increases with time. The temperature of the melting pool rises with the increase of the laser power and falls with the increase of the scan speed.

关 键 词：激光熔覆 ANSYS 温度场 数值模拟 

分 类 号：TG174-39[金属学及工艺—金属表面处理]