铸件

铸造时应留多大加工余量?

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铸造时应留多大加工余量?
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如果粘土砂加工余量可以控制在3-4mm,如果是铁型覆砂可以控制在2-3mm,
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零件高只有78mm,应该是用硅溶胶精铸。单边1.4的加工量够了。
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