用电焊修补铝热焊裂纹接头,是处理无缝线路裂纹接头的新尝试。这种方法既能给国家节约钢轨,又不影响线路质量,而且施工简便。 我段处于津浦干线上,所管辖的线路均为无缝线路,是在1969年至1972年铺设的,计221公里。全段共有铝热焊接头1344个,1973年至今已有74个铝热焊接头发生纵横断裂,其 Using electric welding repair aluminum heat welding crack joints, is to deal with the seamless joint crack new attempt. This method can not only save the country rail, without affecting the quality of the line, and the construction is simple. My section is located in the Jinpu trunk line, under the jurisdiction of the lines are seamless lines, was laid in 1969 to 1972, totaling 221 km. There are altogether 1344 aluminum thermal welding joints in the whole section. Since 1973, 74 aluminum thermal welding joints have been subjected to longitudinal and transverse fracture.