Adding a rail return line between two parallel rails in the subway depot can reduce the resistance and stray current between the rails to ensure the reliable return of the rail. The exothermic welding of the rail and return line in the subway depot refers to the rail and return Wire welding adopts hot-melt flux and exothermic welding technology--Ningbo Zhenhai Besuda Petrochemical Equipment Co., Ltd. has a number of technologies, of which exothermic welding technology ranks first in the world.
Exothermic welding of tracks and return lines in subway depots
--宁波市镇海倍速达石化设备有限公司拥有多项技术，其中放热焊接技术处于国际ling先地位。Adding a rail return line between two parallel steel rails in the subway depot can reduce the resistance and stray current between the rails and ensure the reliable reflow of the rails. The welding of the rails and the return line uses hot-melt flux and exothermic welding technology--Ningbo Zhenhai Besuda Petrochemical Equipment Co., Ltd.has a number of technologies, of which exothermic welding technology is in the leading position in the world.
技术简介：Brief introduction ofexothermic weldingtechnology fortracks and return lines of subway depots: 1. Use the exothermic reaction of the aluminizing flux to melt the reflow conductor in contact with the rail waist, and locally reach a high temperature of more than 1,100 ° C (the melting point of copper is 1080 ° C). The contacting metal on the surface of the rail waist forms a metallurgical weld. 2. The welding area on the rails is small, and the thermal impact on the rails is small. The temperature rise of the rails does not exceed 30 ° C to avoid stress damage to the rails during welding. 3. It is easier to control the quality of the site implementation. After the implementation, the cable and the rail are firmly connected, which is conducive to the smooth return of the rail, thereby suppressing the increase in rail potential and ensuring the normal and safe operation of the subway.
4. The contact resistance of the welding point is less than 25μΩ, the operation is convenient, the tensile strength is greater than 1500N, there is no pore, and it does not hurt the rails. It has passed the authoritative identification by the Chinese Academy of Materials Institute.
宁波市镇海倍速达石化设备有限公司拥有多项技术，其中放热焊接技术处于国际ling先地位。Manufacturer of exothermic welding of railway tracks and return lines of subway depots:Ningbo Zhenhai Besuda Petrochemical Equipment Co., Ltd.has a number of technologies, of which exothermic welding technology is in the leading position in the world.、 Easy operation, one point welding can be completed in 3 minutes. After welding is completed, no insulation is required.
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