The global technology of the great rail welded rail

In recent years, the interaction between China and the world is frequent. All the developments are measured by the advanced world level. Now it is also in line with the world to reach the advanced level.

In February 24th, the high speed rail welded rail integrated technology project developed by China Railway Fourth Survey and Design Institute Co., Ltd. has reached the world level and has been selected as the ten largest technology event in 2015 in Hunan.

The responsible person learned, first 500m long rail efficient whole section welding and precision welding CNC milling technology, can adaptively according to the composition and shape of butt welding end, to achieve a one-time forming 500m long rail welding seam, and weld flatness deviation of 0 to 0.2mm/m is better than that of Japan 0.3mm/m, the German rail standard.

In addition, the project is more prominent achievements, high-speed rail welding production of U type water craft, by milling instead of grinding process, 32 sets of gantry synchronous hoisting technology and key equipment, qualified rail welding precision, and production rates were the highest in the world, more than 350km/h can meet the demand for high-speed rail. At present, the technology provides high quality and long rail for the high speed railway in Wuguang, Beijing, Shanghai and Hewu, and the construction of Hubei intercity construction.

It is worth mentioning that the production system and equipment first 500m long rail welding of U type water, has been put into use, and for the production of high quality China high-speed rail line rail more than 10 thousand km.

At the same time, first 500m long rail production of precise positioning system, height, speed and position information in rail rail welding production line of positioning precision 500m long 1.8km, the positioning accuracy and response speed are the highest in the world, to meet the China high iron leaping huge demand for rail construction. The technology is won in the bidding of famous companies such as Schneider and SIEMENS.

According to the data, by the end of 2015, China's high speed rail has a mileage of 19 thousand kilometers, ranking first in the world. Among them, the use of "high iron welding line rail production overall technical project" rail up to more than 10 thousand km.

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