Effect of Slag System on Steel Composition Variation of G20CrNi2Mo During Industrial Electroslag Remelting Process

摘要

G20CrNi2Mo is one of the typical carburized bearing steels, which has been widely used in the bearing of railway wagon due to its good toughness, wear resistant and mechanical property. It has also become an alternative material in the bullet trains in China recently. With the railway speed-up and heavier load of the train, a higher requirement for G20CrNi2Mo has been put forward. Electroslag remelting (ESR), as an important special melting method, is usually employed for producing the high-performance steels as for its advantages, such as the removal of large non-metallic inclusions, good surface quality and fine solidification structure, etc.. Therefore, the steel plants in China have commonly used this method to produce G20CrNi2Mo bearing steel.