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RE－Ca－Ti复合处理可明显地细化ZG25Mn铸钢的组织，改善钢中非金属夹杂物的形态与分布，使钢具有较高的综合机械性能，克服了一般低合金钢热裂倾向大的缺点。
RE-Ca-Ti composite treatment can obviously refine the microstructure of ZG25Mn cast steel, improve the shape and distribution of non-metallic inclusions in steel, and make the steel possess high comprehensive mechanical properties and overcome the tendency of general low alloy steel hot cracking Shortcomings.