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調(diào)質(zhì)鋼鉆孔,鉆20個(gè)孔后外刃尖角就磨損鉆不動(dòng)了 |
評(píng)分
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點(diǎn)評(píng)
這可不一定,我們廠普通高速鋼¢40的鉆頭,鉆hrc46度的熱作模具鋼都沒(méi)問(wèn)題,銑床,轉(zhuǎn)速18.
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點(diǎn)評(píng)
工件硬度高,不換合金鉆頭的話,只能降低轉(zhuǎn)速了。
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