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利用ＨＪ－３型ＣＯ２激光加工设备对烟机输送轮的内齿和内滚槽进行激光热处理，选择优化合理的工艺参数，其结果令人满意．
Using HJ-3 CO2 laser processing equipment to laser heat treatment of internal gear and internal groove of the conveying wheel of the machine, the optimal process parameters are selected and the result is satisfactory.