• CN：11-2187/TH
  • ISSN：0577-6686
机械工程学报

›› 1991, Vol. 27 ›› Issue (5): 32-36.

• 论文 • 上一篇    下一篇

扫码分享

铸铁激光表面重熔处理的数值模拟

郭景杰;柳百成;周昌炽;张志波   

  1. 哈尔滨工业大学;清华大学
  • 发布日期:1991-09-01

NUMERICAL IMITATION OF LASER SURFACE-REMELTING TREATMENT OF CAST IRON

Guo Jingjie;Liu Baicheng;Zhou Changzhi;Zhang Zhibo   

  1. Harbin Institute of Technology Qinghua University
  • Published:1991-09-01

摘要： 本文采用变热物性参数建立了较合理的数学模型，计算了激光表面处理过程中温度分布明亮变化，对熔化深度和相变总深度进行了预测，同时与试验结果比较，发现两者相吻合。并首次用彩色图象显示过程中温度分布及变化。从而为凝固过程提供了分析基础，为工艺参数优化提供了理论依据。

关键词: 激光热处理, 数学模型, 铸铁, 声学, 梯度移动最小二乘加权, 有限元法, 数值方法

Abstract: The temperature field at different times during laser surface-remelting process was calculated and the melted-depth, phase transformation depth wore predicted by adopting reasonable model of changing thermal properties. Predicted depth was compared with exprimental result, both of them were found almost the same. The temperature field and its change were first displayed with color image. Thereby, theory basis is provided for solidification process research and for the optimizing of technological parameters.

Key words: 激光热处理, 数学模型, 铸铁, Acoustic, Finite element method, Gradient weighted by moving least-squares, Numerical method

版权所有 © 2019 《机械工程学报》编辑部 | 京ICP备05055788号-30