High-speed Railway Jointless-track Rail Welding Technology Research

Our countries□jointless-track’s rail welding exists many technical problems, such as the choice of welding technology parameter is difficult, normalizing poor quality, after passing inspection rail welding often fault and so on. High-speed rail welding of taller to the requirement of which makes the rail welding related research more compelling.This article take the hainan east ring railway base flash butt welding, Beijing and Shanghai high speed railway and:high speed railway flash butt welding related engineering field, based on a systematic study of high-speed rail welding the layout, equipment conditions, process parameters, welding and the related technical problems, to improve the rail welding technology and equipment level has the vital significance.Base flash butt welding using the "one" word layout, workshop capacious and bright, the equipment is advanced, the layout is reasonable, by environmental factor influence is small, easy to control the quality of welding, and according to the layout of a reasonable process flow. And in welding production before a reasonable choice of welding parameters is more difficult to overcome this problem, according to the regulation, main parameters and the top of voltage, through contrast test forging that good results. And because the welding process tend to appear welding interrupt, resistant exceeds the phenomenon, through the research of welding technology and quality guarantee measures in hainan east ring base flash butt welding achieved a great application and verification, so as to solve the above problems.On site flash butt welding technology is simple, but for base welding quality requirements are lower than the base flash butt welding. Therefore, the welding process is base. Complex welding the welding process of by environmental factor influence is bigger, especially in low temperature and damp environment, the quality of welding is easy to problems. Therefore, these articles through the actual situations, the researchers developed a corresponding welding process and protection measures, and bringing to lock possible problems, formulate the corresponding measures in:on the application of high speed railway is good. In addition, for the on-site welding is after the fire will often present stress concentration, the detection rate lower phenomenon, this paper in the jinghu high speed railway on through the practical situation and develop the corresponding strategy, to avoid the problem of high speed railway rail welding to provide effective reference application experience.