前言：考虑磨料介质的实际服役工况条件，生产低铬白口铸铁磨球的工艺设计原则应明确为：在改善韧性指标的前提下，进一步提高硬度。
Considering practical use conditions, technology design principle of producing low chrome white cast iron grinding ball should be: Under premise of improving toughness, to enhance hardness more.
根据强韧性匹配原则，最终确定了适宜的热处理工艺参数。
The proper heat treatment parameters are firmed according to the principle of matching for strength and toughness.
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