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Wear resistant steel
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Wear resistant steel
发布时间:2021-04-06 03:00:43浏览次数:248
Wear resistant steel is widely used in mining machinery, coal mining and transportation, engineering machinery, agricultural machinery, building materials, electric machinery, railway transportation and other departments. For example, steel ball and liner of ball mill, bucket tooth and bucket of excavator, roller wall, toothed plate and hammer head of various crushers, crawler plate of tractor and tank, striking plate of fan mill, railway frog, middle trough plate, trough side and ring chain of scraper conveyor in coal mine, scraper blade and shovel tooth of bulldozer, liner of large electric wheel body, perforation of oil and open-pit iron ore The above-mentioned examples are mainly limited to the application of wear-resistant steel subjected to abrasive wear. In all kinds of machinery, all workpieces with relative motion will produce various types of wear, and there are requirements to improve the wear resistance of workpieces or wear-resistant steel. There are numerous examples in this respect. Grinding media (balls, rods and liners) used in ore and cement mills are iron and steel wear parts with large consumption. In the United States, grinding balls are mostly forged or cast from carbon steel and alloy steel, which account for 97% of the total consumption of grinding balls. In Canada, steel balls account for 81% of the grinding balls consumed. According to the statistics at the end of 1980s, the annual consumption of grinding balls in China is about 800000-1 million tons, and the annual consumption of mill liners in China is nearly 200000 tons, most of which are steel products. The middle trough of scraper conveyor used in coal mines in China consumes 60000-80000 tons of steel plate every year.
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