铸件

关于型砂铸造HT250铸件金相

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我们厂做的空调压缩机配件,HT250铸件金相要求A型占90%以上,现在老是铸件内部出现大量D型石墨,应该怎么解决,请各位大师讲解一下,怎么去控制。
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控制好铸型的过冷度。加强孕育处理控制好化学成分。铸型的过冷度对铸件的金相影响非常大。
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