2801| 13
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滚刀滚生铁,磨损比较厉害请高手推荐一下更好的刀 |
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点评
生铁是很伤刀,如果是白口铸铁建议不要采用切削加工。QT700-2正火状态反倒是不太伤刀,至少没有想象的严重,前提是QT700是合格的
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点评
学习了
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