Study On Welding Quality Of Rail Gas Pressure Welding Vehicle Plateau Typed

The rail welding is one of the important parts in the the CWR construction project. The quality of welding of rail joints is related to railway traffic safety, he rail pressure welding is widely used in the field welding because of its stable quality. Human machine performance is very low because of the cold and bad climate strong ltraviolet radiation and hypoxia in Tibetan Plateau. First of all, we should consider that which key technology of rail welding should be adopted to Line for laying seamless construction in this extremely harsh natural conditions. Reliably ensuring the quality of rail welding and preventing the emergence of low-temperature brittleness broken rail are Significant to Fill the highland areas on-site rail welding technology gaps as well as improving the quality of rail welding.This paper studies the field of rail welding technological test and the statistical analysis of the different field conditions the range of welding parameters of China’s independent innovation developed the world’s first YHGQ-1200high altitude rail gas pressure welding car in Nanshankou, Budongquan and nachitai. This paper still studies the relationship between the field pressure welding technological parameters and the quality of joint and tracking on the service quality for future joint. This paper provides scientific data for the choice of welding technology parameter and joint quality evaluation in the plateau region.The results showed that YHGQ-1200high altitude rail gas pressure welding vehicle with independent research and development of GPW-1200rail gas pressure welding machine, welding, heat treatment machine, can be in the same position achieved by pulling rail, welding, pressure pushing convex, pressure heat treatment continuous production, not only high efficiency, and good welding quality, welding rail technology adaptability, weld joint type inspection once through all the joints; ultrasonic inspection of100%qualified, on the service has no damage; gas pressure welding spot welding line unit construction organization plan to fully meet the120minutes of welding4joint construction requirements.