3021| 4
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鋁型材前處理,求助 |
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點(diǎn)評(píng)
分析過金相嗎?黑色的坑是什么成分?非金屬夾雜在擠壓過程中會(huì)重新分布,但不會(huì)被消滅,鋁錠自身的裂紋有些可以消弭,但會(huì)有痕跡,特別是晶界的缺陷,你必須明確告訴我顯微組織是什么?否則現(xiàn)在你我就是在瞎說,哈
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