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球铁曲轴铸造工艺

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以前在别厂参观时,分别见过曲轴的平做平浇平冷,平浇立冷,铁型覆模等工艺,具体优缺点不甚详,谁有现场经验的,请不吝赐教。
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很多工艺介绍,源于很多工厂的
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潮模砂做或多或少存在缩松,用铁型覆砂铸造最好工艺出品率高,废品少,强度好
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