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研究了稀土变质处理对高镍铬无限冷硬铸铁碳化物、石墨形态和分布的影响， 结果表明， 稀土残留量在０－０１ ％ ～０－０５ ％ 范围内， 可提高这种轧辊的冲击韧性和抗剥落性能， 从而明显延长了轧辊的使用寿命。
The effects of rare earth modification on the shape and distribution of carbides and graphite in high Ni - Cr alloyed chill cast iron were studied. The results show that the residual toughness of rare earth can be increased within the range of 0% ~ 0% And anti-spalling performance, thus significantly extending the service life of the roll.