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CN105555979A 负压罐盖用铝合金板 无效 - 驳回

负压罐盖用铝合金板
摘要：
在含有较高浓度的Mn的负压罐盖用Al-Mg-Mn系铝合金板中，即便使其薄壁化至低于0.220mm时，仍具备优异的铆钉成形性。一种负压罐盖用铝合金板，其在0.10质量％以上且0.40质量％以下的范围含有Si，在0.20质量％以上且0.40质量％以下的范围含有Fe，在0.10质量％以上且0.30质量％以下的范围含有Cu，在0.30质量％以上且1.00质量％以下的范围含有Mn，在1.00质量％以上且2.00质量％以下的范围含有Mg，根据需要还含有Zn：0.05～0.25质量％，余量由Al和不可避免的杂质构成。设Fe的质量％为[Fe]，Mn的质量％为[Mn]，Mg的质量％为[Mg]时，满足下述不等式(1)。1.05≤[Fe]+1.07[Mn]+0.27[Mg]≤1.65…(1)。
摘要（英）：

Provided is an Al-Mg-Mn-based aluminum alloy sheet for a negative-pressure can lid which contains Mn at a relatively high concentration, said sheet exhibiting excellent rivet formability even when the thickness thereof is reduced to less than 0.220 mm. The aluminum alloy sheet for a negative pressure can lid contains 0.10-0.40 mass% of Si, 0.20-0.40 mass% of Fe, 0.10-0.30 mass% of Cu, 0.30-1.00 mass% of Mn, 1.00-2.00 mass% of Mg, and further contains, if necessary, 0.05-0.25 mass% of Zn, with the remainder consisting of Al and unavoidable impurities. If the mass percentage of Fe is denoted as [Fe], the mass percentage of Mn is denoted as [Mn] and the mass percentage of Mg is denoted as [Mg], inequality (1) is satisfied. (1): 1.05<=[Fe]+1.07[Mn]+0.27[Mg]<=1.65

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