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研究了单球金属型工艺生产多元低合金磨球变质前后组织与性能，论述了成分，变质，金属型对生产低合金磨球的作用。
The microstructure and properties of mulitized low-alloy balls before and after the production of single-ball metal-type process were studied. The effects of composition, metamorphism and metal type on the production of low alloy balls were discussed.