通过对传统拉伸工艺设计的改进，简化了模具结构，减少了拉伸次数。
Through the improvement in the traditional drawing process design, the structure of the drawing die was simplified and the drawing times were reduced.
不同的专家都告诉你每个拉伸要保持15 - 30 - 60秒，要重复一定的次数。
Various experts will tell you to hold each stretch 15 to 30 to 60 seconds and repeat a certain number of times.
在4%的固定应变下，反复拉伸疲劳断裂次数高达38560次，形状回复率为100%。
Under 4% strain, the number of repeat tensile fatigue rupture is 38560 cycles and the recovery rate keeps up 100%.
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