增加再结晶退火前道次加工率对H68铜带冲制制耳的影响

Influence of Increasing the Depressing Ratio of Rolling Before Recrystallization Annealing on Production of Earing in H68 Copper Tape's Punching

铜带冲制制耳的产生对生产有许多不利影响,为解决此问题或使制耳率降低,文中通过对H68铜带的轧制工艺的改进使制耳现象得到了有效的控制。实验结果表明:使再结晶退火前道次加工率29.41%(0.85→0.6)增加至47.06%(0.85→0.45),可以使制耳率从4.80%降低至1.12%。

The production of earing in copper tape＇s punching is bad in many place.In order to solve this problem or reduce the earing ratio to a special aim, the thesis proposes that the phenomenon of Earing will be controlled effectively with improving of rolling of H68 Copper tape. The result is：when the Depressing Ratio of Rolling Before Reerystallization Annealing changed from 29.41% （0.85→0.6） to 47.06% （0.85→0.45）, the Earing ratio will be changed from 4.80% to 1.12%.