In 2025, the global casting production is expected to exceed 115. million tons, in which the new energy automotive industry has a strong demand for lightweight high-performance castings. The construction of urban rail transit is in full swing, and the traction system, gearbox, and wheels of subway vehicles require a large number of castings. Taking the wheels as an example, in order to meet the frequent start-stop and high-load operation requirements of urban rail transit, special castings with special materials need to be used to improve the wear resistance and service life of the wheels.