Special vehicle titanium alloy high-speed welding method

• Main Authors: WAN PENG, YANG HAILIN, SONG XUJIE, LIU ZHENG, WANG HUIZE, FENG HEYONG, GAO JINLIANG, LIU LANGLANG, CHENG YAHUI, ZHOU XIAOYU, GENG JINGGANG, ZHANG JUHE, REN YAN
• Format: Patent
• Language: Chinese; English
• Published: 08.08.2023
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

According to the high-speed welding method for the titanium alloy of the special vehicle, laser-MIG hybrid welding of welding seams with different thicknesses and joint forms outside a titanium alloy vehicle body of the large special vehicle can be achieved, the structural quality is improved, the welding production efficiency is improved, and the problem that when the titanium alloy vehicle body of the large complex special vehicle with the plate thickness being 6-25 mm is welded through a common TIG welding method, the welding quality is poor is solved. The welding speed is low, and welding deformation and residual stress are large. Compared with a common TIG welding method, the welding speed is increased by more than 10 times, and meanwhile due to the fact that the welding speed is high and the overall heat input is low, the welding variable deformation is reduced by 50%. 本发明提出一种特种车辆钛合金高速焊接方法，能够实现大型特种车辆钛合金车体外部不同厚度及接头形式焊缝等激光-MIG复合焊接，改善结构质量，提高焊接生产效率，解决采用普通TIG焊方法焊接板厚为6～25mm大型复杂特种车辆钛合金车体时，焊接速度慢、焊接变形和残余应力大的问题。与