激光相变硬化纵向层深分布模拟与均匀性控制  

Simulation and Uniformity Control of Longitudinal Hardened Case Distribution in Laser Transformation Hardening

作　　者：吴钢[1] 宋光明[1] 

机构地区：[1]上海海事大学激光应用研究室,上海200135

出　　处：《金属热处理》2006年第10期24-28,共5页Heat Treatment of Metals

基　　金：上海市高校科技发展基金项目(03ik10)

摘　　要：根据激光相变硬化理论计算模型,编制了模拟激光束扫描作用下沿工件纵向硬化层分布的有限元计算程序。该程序可用来自动确定激光变速扫描中的变速段长度。结合分段变速扫描工艺及参数优化设计,可以实现纵向硬化层分布均匀性控制。其有效性从模拟和试验两方面得到了验证。According to the theoretical model of laser transformation hardening （LTH） , a program based on finite element method （FEM） to simulate the longitudinal hardened case distribution under laser beam scanning was developed. The sectional velocity changing length was determined by the program. The case distribution umformity was controlled by sectionally changing velocity technique and the parameters optimization. The validity was verified both by theoretical simulation and experimental results.

关 键 词：激光相变硬化 硬化层分布 模拟 均匀性控制 

分 类 号：TG156.99[金属学及工艺—热处理] O242.21[金属学及工艺—金属学]