Design of welding parameters for laser welding of thin-walled stainless steel tubes using numerical simulation

27th Joint Seminar Development of Materials Science in Research and Education

材料科学;教育

Nagy, M.^1 ; Behúlová, M.^1

Slovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, Ulica Jána Bottu . 2781/25, Trnava

917 24, Slovakia^1

关键词: Joining technology;    Laser technologies;    Military industries;    Physical principles;    Simulation model;    Stainless steel tube;    Thin walled tubes;    Welding parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/266/1/012013/pdf
DOI  :  10.1088/1757-899X/266/1/012013

来源: IOP

【 摘 要 】

Nowadays, the laser technology is used in a wide spectrum of applications, especially in engineering, electronics, medicine, automotive, aeronautic or military industries. In the field of mechanical engineering, the laser technology reaches the biggest increase in the automotive industry, mainly due to the introduction of automation utilizing 5-axial movements. Modelling and numerical simulation of laser welding processes has been exploited with many advantages for the investigation of physical principles and complex phenomena connected with this joining technology. The paper is focused on the application of numerical simulation to the design of welding parameters for the circumferential laser welding of thin-walled exhaust pipes from theAISI 304 steel for automotive industry. Using the developed and experimentally verified simulation model for laser welding of tubes, the influence of welding parameters including the laser velocity from 30 mm.s-1to 60 mm.s-1and the laser power from 500 W to 1200 W on the temperature fields and dimensions of fusion zone was investigated using the program code ANSYS. Based on obtained results, the welding schedule for the laser beam welding of thin-walled tubes from the AISI 304 steel was suggested.