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我的多頭鉆孔機(jī),用的U鉆,燒鉆桿太頻繁了,求哪位大神幫忙分析!拜謝 |
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點(diǎn)評(píng)
鉆尖是硬質(zhì)合金的,鉆桿是鋼的,現(xiàn)在比較流行的,基本能代替硬質(zhì)合金鉆頭,效率還比硬質(zhì)合金的高點(diǎn),又因?yàn)榈稐U有韌性,所以不容易斷.
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