Energy-saving rail, energy-saving train wheel and friction stir welding method for preparing the same

Abstract

The application discloses an energy-saving rail, an energy-saving train wheel and a friction stir brazing preparation method thereof. An aluminum layer is welded on the side rail waist of a rail to prepare a composite rail capable of reducing the backflow resistance of the rail and reducing the corrosion and thinning of the rail body. In addition, in order to reduce the resistance of the train wheel in the backflow path, a copper or aluminum layer is welded on the end surface of the train wheel. The application adopts the friction stir brazing preparation process, ensures that the coating metal and the steel wheel and rail base are metallurgically combined, thereby preventing the interface between the aluminum coating at the side rail waist of the rail and the welded rail from cracking in the bearing pressure cycle, and preventing the interface between the copper coating or aluminum coating of the train wheel and the welded steel wheel from cracking due to high-speed rotation.