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成型模具---請(qǐng)教! |
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點(diǎn)評(píng)
覆蓋件模具都是大量用鑄鐵制造的,,45#鋼咋就不能用呢,?
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點(diǎn)評(píng)
嗯,,不量產(chǎn)沒(méi)事,最好熱處理下,。
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