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冷硬铸铁轧辊的生产已经多年,目前已广泛应用于钢铁、有色金属、橡胶、造纸、食品等工业部门。据有关方面统计,1980年国产冷硬铸铁轧辊年产量已达17万吨,牌号有低镍铬、中镍铬钼、高镍铬钼三种,其中以低镍铬及中镍铬钼为主。冷硬铸铁轧辊由铁模立浇及离心浇注而成,一般都在铸态下使用。其组织:表面(白口层)为莱氏体和珠光体;次表面(麻口层)为珠光体、莱氏体及片状石墨;心部为珠光体和片状石
The production of chilled cast iron rollers has been for many years and is now widely used in the industrial sectors of iron and steel, non-ferrous metals, rubber, paper making and foodstuffs. According to relevant statistics, in 1980 the annual output of domestic chilled cast iron roll has reached 170,000 tons, the grade is low nickel chromium, nickel chromium molybdenum, high nickel chromium molybdenum three, of which low nickel chromium and nickel chromium chromium molybdenum . Chilled cast iron roll from the iron mold legislation and centrifugal casting, generally used in the cast state. Its organization: the surface (white layer) for the ledeburite and pearlite; sub-surface (stomatal layer) pearlite, ledeburite and flake graphite; heart pearlite and flake