焊管2024，Vol.47Issue(11)：46-52,7.DOI:10.19291/j.cnki.1001-3938.2024.11.007
304不锈钢激光-电弧复合焊流场数值模拟研究
Numerical Simulation of Laser-arc Hybrid Welding Flow Field in 304 Stainless Steel
温鹏军 1杨明晓 2张骁勇 1路永新 1周雨微1
作者信息
- 1. 西安石油大学 材料科学与工程学院,西安 710065
- 2. 兰州兰石检测技术有限公司,兰州 730314
- 折叠
摘要
Abstract
In order to study the changes in the molten pool of 304 stainless steel during laser-arc composite welding,the finite element software ANSYS Fluent is used to simulate the laser-arc composite welding flow field of 304 stainless steel to analyze the influence mechanism of different welding parameters on the weld morphology and microstructure.The results show that with the increase of laser power and welding current,the total welding heat input increases gradually,and the depth of weld pool increases.The higher the laser scanning frequency,the faster the heat input and the deeper the weld pool.The laser scanning amplitude affects the width of weld pool.The larger the laser scanning amplitude is,the larger the width of weld pool is.The laser power,welding current,laser scanning amplitude and laser frequency not only affect the width and depth of the molten pool,but also affect the flow rate of the molten liquid on the surface of the stainless steel and the uniformity of the temperature field and flow field inside the molten pool,thus affecting the weld formation and microstructure.In addition,under the beam stirring effect,the droplets exist in the molten pool in the form of eddy currents,and the direction of eddy currents depends on the direction of the laser movement,which forms counterclockwise eddy currents when the laser scans to the left and clockwise eddy currents when the laser scans to the right.At the same time,dynamic keyhole reduces heat accumulation and porosity of molten pool.关键词
304不锈钢/激光-电弧复合焊/数值模拟/熔池形貌Key words
304 stainless steel/laser-arc composite welding/numerical simulation/molten pool morphology分类
矿业与冶金引用本文复制引用
温鹏军,杨明晓,张骁勇,路永新,周雨微..304不锈钢激光-电弧复合焊流场数值模拟研究[J].焊管,2024,47(11):46-52,7.
