表面张力
材料科学
传热
机械
激光器
熔融金属
熔盐
金属
导线
复合材料
冶金
热力学
光学
地质学
物理
大地测量学
作者
Haiyong Peng,Jie Zheng,Wenhao Huang,Jiangqi Long
标识
DOI:10.1177/09544062221143869
摘要
The mechanism of the hump formation during the laser wire feeding process has been investigated in this paper. A numerical model was established to analyze the heat transfer and melt flow of molten pool during process with or without hump formation. And effects of laser power, traverse speed, and wire feeding speed on hump formation were also investigated through such a numerical model. The results showed that, under the condition with high wire feeding speed, the molten metal flowed rapidly to the tail of the molten pool due to the impact force of droplet and the metal vapor recoil pressure. Simultaneously, due to the high speed of laser movement, the thin channel of the trough solidified prematurely under the effect of surface tension, which isolated the heat transfer of the molten pool, and then formed periodic humps. By comparative analysis, the numerical simulation results were in good agreement with the experimental results.
科研通智能强力驱动
Strongly Powered by AbleSci AI