2997| 16
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鍛造模具容易開裂 |
點評
最差要用CR12,一般用于 熱作模具鋼DC53,怎么可能用45鋼,
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Archiver|手機版|小黑屋|機械社區(qū) ( 京ICP備10217105號-1,京ICP證050210號,浙公網(wǎng)安備33038202004372號 )
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