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发明公开
CN106065446A 一种替代QT400井盖的铝合金材料及其砂型铸造方法 失效 - 权利终止

一种替代QT400井盖的铝合金材料及其砂型铸造方法
摘要：
本发明公开一种替代QT400井盖的铝合金材料，其特征在于：主成分含量按重量百分比计：钼：0.2%‑0.25%，锰Mn:≤2%，镉Cd:0.05%～0.5%，铜Cu:4.2%～8.0%且Cu≥0.8Mn+4.05%或铜0.5%≤Cu≤3%且Cu≥1.5Mn；路易斯酸碱对总量1%×10‑4～2.0%或7.0%～9.0%，使合金平均晶粒度＜120微米，余量为铝Al。
摘要（英）：

The invention discloses an aluminum alloy material for replacing a QT400 well lid. The aluminum alloy material is characterized in that main components comprise, by weight, 0.2-0.25% of Mo, 0-2% of Mn, 0.05-0.5% of Cd, 4.2-8.0% of Cu and the balance Al, wherein Cu>=0.8Mn+4.05%, or 0.5%<=Cu<=3% and Cu>=1.5Mn, the content of Lewis acid and base to total quantity is 1%*10<-4>-2.0% or 7.0-9.0%, and the average grain size of alloy is made to be smaller than 120 microns.

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