3422| 5
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沖10mm厚鋼板,10X16面積沖頭斷 |
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點(diǎn)評
有個(gè)疑問,為什么不在硬度低是進(jìn)行沖孔呢?這時(shí)金屬受力后的流動(dòng)性好,金屬受力后的流動(dòng)會(huì)減小沖頭刃口所受的偏力。
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