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自京广等主要干线铺设60kg/m高锰钢辙叉以来,辙叉伤损已成为我国铁路工务部门十分突出的问题。尤其是正线、到发线道岔辙叉平均使用寿命仅为11.7个月,远未达到设计通过总重。大批价值万元的辙叉被判了死刑,扔进了废铁堆里。且每换一组辙叉需要封闭要点15min,严重干扰了运输生产。 邯郸工务段在学习广州铁路(集团)公司KD286焊条及工艺、在线下焊修成熟的基础上,大胆地提出了进行繁忙干线60kg/m辙叉线上焊修尝试的设想。线上焊修的性质是预防修,它可以最大限制度
Since Jingguang and other main lines have been laying 60kg / m high-manganese steel frogs, the frog damage has become a very prominent issue for China’s railway construction department. Especially the main line, the average length of service of the line crossing to the fat line is only 11.7 months, which is far from the total weight of the design. A large number of million frogs were sentenced to death, thrown into the scrap pile. And for each group of frog points need to be closed 15min, seriously interfere with the transport production. On the basis of studying the KD286 welding rod and its technology of Guangzhou Railway (Group) Company, Handan Public Works Section boldly put forward the tentative plan of welding on the 60km / m frog on the busy main line. The nature of online welding repair is preventive repair, it can be the maximum limit