2. Key innovative technologies were developed, including frame-type mechanical device, high-power DC power supply, intelligent control, welding data acquisition and monitoring system, active constant temperature control of hydraulic system, and locking fast shearing device.
3. The welding process control theory of heat compensation based on temperature field was put forward, and a multi-mechanism welding process system integrating continuous, pulsating, and preheating welding processes was established, making the adjustment of flash butt rail welding process more flexible and convenient.
The success of developing the fixed flash butt rail welding machine filled in the technical gap of large DC flash butt rail welding in China, making the situation that China has to completely rely on imports in terms of key rail welding equipment totally changed, marking a milestone in the development of China’s rail welding technology. The outcome of this research was granted with four utility model patents, three invention patents, and one software copyright.