铸件

大型铸件消失模铸造有哪些常见缺陷?

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大型铸件消失模铸造有哪些常见缺陷?
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加渣、缩孔、加砂、充砂、铸件变形、尺寸变形、浇铸不足、气孔、硬度低、铸件内部缩孔多等。
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1、铸件本身的化学成分和金相组织有问题。 2、涂料不好,铸件不平整同时粘砂,也会加工不动。
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