5981| 16
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薄板打螺紋孔,該如何保證質(zhì)量 |
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點(diǎn)評
正是因?yàn)楸∷圆艑︺@頭絲錐要求高,稍微鈍一點(diǎn)就不好用了,薄板人工鉆孔很容易出現(xiàn)用力過大導(dǎo)致鉆頭刃口溫度過高而磨損,鋁屑太薄不能吸納多少熱量所以溫度會很高,
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