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为了获得铸态高锰钢,试验了降碳、快冷、改性、改性与快冷结合生产铸态高锰钢的工艺。通过对试验结果对比分析,认为改性与快冷结合工艺同时满足了成份浓度起伏和结晶过冷的两个冶金动力学条件,能够净化钢液、提高过冷,改变奥氏体的等温转变曲线,其铸态微观组织具有细化和固溶强化的奥氏体基体、及基体上适量弥散分布球团状碳化物和晶界上块状分布不连续的碳化物。结果表明,使用该工艺能够生产优质铸态高锰钢,而且综合性能好、成本低廉。
In order to obtain as-cast high manganese steel, the process of producing as-cast high manganese steel by carbon reduction, rapid cooling, modification, modification and rapid cooling was tested. Through the comparative analysis of test results, it is considered that the modification and rapid cooling combined process satisfy the two metallurgical kinetic conditions of ingredient concentration fluctuation and crystallization supercooling at the same time, which can purify molten steel, increase overcooling and change the isothermal transformation curve of austenite , The as-cast microstructure has a refined and solid solution strengthened austenite matrix, and an appropriate amount of dispersedly distributed ball-shaped carbides and discontinuous carbides distributed on the grain boundaries on the matrix. The results show that the use of the process can produce high quality cast high manganese steel, and the overall performance, low cost.