Porosity Formation of Deep Penetration Laser Welding Simulated by CFD

摘要：

The quality of laser beam welding with deep penetration is related to the multi-phase flow of weld pool, and which forms the keyhole induced porosities. In this paper, the model was proposed to describe the multiphase flow of laser welding, including the forces interaction of fluid flow in the keyhole and weld pool. In addi-tion, an adaptive heat source model was proposed for the absorption of the laser energy in deep penetration welding. The multiphase flow of laser beam welding was simulated by using the developed model, as well as the formation of keyhole-induced porosities. The factors influencing keyhole fluctuation and bubble for-mation were discussed.

关键词： laser beam welding CFD multiphase flow keyhole-induced porosity

作者: Haiyan ZHAO Lingyao MENG Bin ZHANG

作者单位: Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China

会议类型: 国际会议

会议名称: 第二届计算机辅助焊接工程国际学术研讨会(CAWE2012)

会议地点: 济南

会议语种:英文

页码: 1-10

在线出版日期: 2012-08-24（万方平台首次上网日期，不代表论文的发表时间）