Innovation in the Processing Technology of Train Coupler Buffers: Multi-process Collaboration Ensures Railway Safety

Recently, a rail transit equipment enterprise has achieved a significant breakthrough in the processing of train coupler draft gears. By integrating forging, numerical control machining, and intelligent detection processes, it has realized the precise manufacturing of key components. This technology has increased the energy absorption efficiency of the draft gear by 35% and has been applied to high-speed railway freight trains. "The core of train coupler draft gear processing lies in the design of multi-physical field coupling," introduced the technical director. The traditional casting process is difficult to meet the requirements of high-load impacts. The new solution adopts a combined process of "closed-die forging + five-axis milling". First, the alloy steel billet is heated to 1150°C for precision forging, and then the three-dimensional milling of the inner cavity of the draft gear is carried out through a numerical control program to ensure that the toleran...