The batch rails produced by the four-high rolling mode pioneered by WISCO

four-high rolling mode rails

The Zhengzhou-Chongqing high-speed rail line is fully operational, and the fastest route from Wuhan to Chongqing is 4 hours and 57 minutes. Among them, nearly 80% of the tracks of the Zhengwan section of the Zhengzhou-Chongqing high-speed railway use the four-high rolling mode rails pioneered by WISCO.

The Zheng-Wan section of the Zheng-Chongqing high-speed railway has a total length of 818 kilometres. WISCO provided about 120,000 tonnes of rails and laid 636 kilometres of rails. According to the introduction of WISCO’s R&D personnel, the four-high rolling mode rail used for rail laying is exclusively developed by WISCO.

With the high mountains and deep valleys along the Zhengyu high-speed railway line, the bridge-tunnel ratio of the line is as high as 98%, and the terrain is complex and changeable. This is a comprehensive test for the quality performance of the laid rails and the ability to adapt to all-weather geological environmental conditions. The rails must be “smooth and silky” enough. In order to support the safe operation of high-speed rail.

WISCO’s first four-roll rolling mode rail can control the rail height fluctuation from 1 mm to less than 0.2 mm, which greatly improves the safety and stability of high-speed rail operation. Key technologies such as local high-point control and high-flatness control of the rail are in a leading position in the country.

It is reported that by the end of 2021, the operating mileage of China’s high-speed railway will exceed 40,000 kilometres, and the high-speed rail of Baowu Co., Ltd. WISCO Co., Ltd. covers more than 50% of the mileage. In the first half of this year, Wuhan Iron and Steel Co., Ltd. increased the 100-metre pick rate, one of the important data for measuring rail manufacturing capacity, by 1.55 percentage points.