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#45調(diào)質(zhì) 淬火 疑惑 |
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點(diǎn)評
也有金剛石車刀,但車淬火件,這不是常態(tài),以磨損刀具作為代價的加工方式,不值得說。
換上硬質(zhì)合金刀,當(dāng)然表面粗糙度高的還是要磨
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