Application Research On Flash Welded Rail Car Field Welding

Because, of the stability of welding quality and high flexibility, the flash welding rail vehicle has been widely used in welding field. Study of flash butt welding rail car welding process debugging method, and all kinds of working conditions of construction method for improving flash butt welded rail car use level is of great significance.The for various welding on site construction conditions, through long-term development of spot welded rail construction practice, the paper studies and summarizes the use of flash welded rail car spot welded rail construction feasibility, safety, quality and efficiency and through practice verify the feasible construction technique and method.Research results show that:Flash butt welding of rail cars welding technology and construction environment and equipment condition is closely related to, in rail welding in the construction process, should focus on actual welding process and type test process is consistent, alignment parameters change range, timely analysis and judgement to ensure welding quality.Using flash welded rail car construction, for line welding, using direct welding method; for the welding line should be according to the different natural environment and offline and online, Longkou welding design technical requirements, the reverse method, even in method, insertion compensation method of welding; high iron damage of steel rail welding complex:by flash butt welding of high speed rail welding complex construction, mainly due to the skylight homework time factors, also need the further exploration, to find a safe and reliable permanent welding complex method.