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高铬白口铸铁中加入适量钒钛及稀土元素经复合变质处理后，可使铸态组织显著细化。经热处理后，冲击韧度稳定在８～１５Ｊ／ｃｍ２水平。试验证明，应用稀土钒钛高铬白口铸铁制造的破碎机颚板，其使用寿命约为高锰钢制颚板的４倍
High chromium white cast iron by adding the right amount of vanadium and titanium and rare earth elements by metamorphic treatment, the cast structure can be significantly refined. After heat treatment, the impact toughness stabilized at 8 ~ 15J / cm2 level. Test proved that the application of rare earth vanadium titanium high chromium white cast iron jaw crusher, its service life is about 4 times the high manganese steel jaw