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发明公开
CN105177343A 一种易切削铜合金及其制造方法 无效 - 驳回

一种易切削铜合金及其制造方法
摘要：
本发明涉及一种易切削铜合金及其制造方法。其特点是，组成为：1.80～2.00wt％的Be、0.2～0.6wt％的Co+Ni、0.2～0.6wt％的Pb、0.4～0.8wt％的Sn、0.8～1.2wt％的Bi，以及≤0.15wt％的Fe，≤0.15wt％的Al，≤0.15wt％的Si，余量为Cu。本发明的铜合金是在铅黄铜和加铅铍青铜等易切削铜合金的基础上适量的加入其他能够改善材料切削性能的元素，如：Sn、Bi、Mg、Pb等其他元素进一步通过元素交互作用和元素特性达到改善切削性能的目的，同时保证原有的高弹性性能、弹性弛豫、滞弹性性能、高硬度等优点的基础上进一步提高材料的切削性能。
摘要（英）：

The invention relates to a free-cutting copper alloy and a manufacturing method thereof. The free-cutting copper alloy is characterized by comprising: 1.80-2.00wt% of Be, 0.2-0.6wt.% of Co+Ni, 0.2-0.6wt.% of Pb, 0.4-0.8wt% of Sn, 0.8-1.2wt% of Bi, and less than or equal to 0.15wt% of Fe, less than or equal to 0.15wt% of Al, less than or equal to 0.15wt% of Si, and the balance Cu. According to the invention, on the basis of lead brass, leaded beryllium bronze and other free-cutting copper alloys, elements like Sn, Bi, Mg, Pb and the like able to improve material cutting performance are added to reach the purpose of improving the cutting performance further through element interaction and element characteristics. While the original advantages of high elasticity, elastic relaxation, anelastic behavior, high hardness and the like are ensured, the cutting performance of the material is further improved.

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