Wear-resistant steel is widely used in mining machinery, coal mining and transportation, construction machinery, agricultural machinery, building materials, power machinery, railway transportation and other departments. For example, the steel balls and liners of ball mills, the bucket teeth and buckets of excavators, the mortar walls, tooth plates and hammers of various crushers, the track shoes of tractors and tanks, the striking plates of fan mills, the railway rut forks, the middle groove plate, groove gang, and ring chain for coal mine scraper conveyors, and the shovel blades used for bulldozers. Shovel teeth, liners for large electric wheels, cone bits for oil and open-pit iron ore perforation, etc., are mainly limited to the application of wear-resistant steel that has undergone abrasive wear, and all kinds of machinery in which there is a relative movement of the workpiece, will produce various types of wear, there will be requirements to improve the wear resistance of the workpiece material or require the use of wear-resistant steel, and there are countless examples of this. The grinding media (balls, rods and liners) used in ore and cement mills are steel wear parts that consume a lot. In the United States, most of the grinding balls are forged or cast from carbon and alloy steels, which account for 97% of the total grinding ball consumption. In Canada, steel balls account for 81% of the grinding balls consumed. According to the statistics of the late 80s, China consumes about 80~1 million tons of grinding balls every year, and the annual consumption of mill liners in China is nearly 200,000 tons, most of which are steel products. The middle groove of the scraper conveyor for coal mines in China consumes 6~80,000t steel plates per year.
