离心铸造高速钢辊环的研究

Study of Wear -Resistance High Speed Steel Roll Collar by Centrifugal Casting

采用离心铸造方法，开发了耐磨性能优良的高速钢辊环。辊环硬度ＨＲＣ达６３～６５辊面硬度ＨＲＣ的差小于２，冲击韧性大于 １６Ｊ／ｃｍ２。用于高速线材轧机预精轧段，使用寿命比合金铸铁辊环提高 ６～１０倍。

A kind of high speed steel roll collar with high wear-resistance has been developed by centrifugal casting, of which hardness has been 63 ~ 65HRC, impact toughness has been over 16J/cm2, baldness balance on roll collar surface has been smaller than 2HRC. When used in the pre-precision rolling machine group of high speed lines rolling mill, its service life has been 6 ~ 10 times longer than that of alloy cast iron roll collar.