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有色金属冶炼中为何要采用石墨

发布时间:2020-07-22 10:39:42 浏览:422次

采用石墨模具主要是它的耐高温性比拟好,比方纯铜铸造温度大约在1200度左右,石墨在该温度下性能仍然稳定,热障和冷缩的量都很小,能够疏忽不计。另一方面就是光滑性比拟好,凝固过程中金属液不易粘接在模具上。

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有色金属冶炼中为何要采用石墨

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