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镦粗时的一般原则是什么?

问答题
2021-09-17 15:15
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正确答案

(1)为防止坯料镦粗时弯曲,坯料原始高度应小于其自身直径的2.5倍
(2)坯料端面应平整并于轴线垂直
(3)如坯料高度于直径之比较大,或锤击力不足,就可能产生双鼓形。


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标签: 锻压 机械工程
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