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发明公开
CN103917674A 铜合金热锻件 有权

铜合金热锻件
摘要：
本发明提供一种铜合金热锻件，该管状铜合金热锻件含有59.0～84.0质量％的Cu、0.003～0.3质量％的Pb、剩余部分具有由Zn及不可避免杂质构成的合金组成，在Cu的含量[Cu]质量％与Pb的含量[Pb]质量％之间具有59≤([Cu]+0.5×[Pb])≤64的关系，形状满足公式0.4≤(平均内径)/(平均外径)≤0.92、0.04≤(平均壁厚)/(平均外径)≤0.3、1≤(管轴方向长度)/(平均壁厚)≤10，被热锻之前的锻造原材料为管状，且为0.3≤(平均内径/平均外径)≤0.88、0.06≤(平均壁厚)/(平均外径)≤0.35、0.8≤(管轴方向长度)/(平均壁厚)≤12，在管轴方向上的任一位置都满足公式0≤(厚度偏差度)≤30％、0≤(厚度偏差度)≤75×1/((管轴方向长度)/(平均壁厚))1/2。
摘要（英）：

A tubular hot-forged copper alloy article has an alloy composition comprising 59.0-84.0 mass% of Cu, 0.003-0.3 mass% of Pb and a remainder made up by Zn and unavoidable impurities, wherein the content of Cu [Cu] (mass%) and the content of Pb [Pb] (mass%) have a relationship represented by the formula: 59<=([Cu]+0.5*[Pb])<=64, the shape of the article fulfills the formula: 0.4<=(average inner diameter)/(average outer diameter)<=0.92, 0.04<=(average thickness)/(average outer diameter)<=0.3 and 1<=(length in tube axis direction)/(average thickness)<=10, and a forging material that is not hot-forged yet has a tubular form, fulfills the formula: 0.3<=(average inner diameter/average outer diameter)<=0.88, 0.06<=(average thickness)/(average outer diameter)<=0.35 and 0.8<=(length in tube axis direction)/(average thickness)<=12, and fulfills the formula: 0<=(degree of thickness unevenness)<=30% and 0<=(degree of thickness unevenness)<=75*1/((length in tube axis direction)/(average thickness))1/2 at any position located in the tube axis direction.

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