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镦粗时的一般原则是什么？
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镦粗时的一般原则是什么？
时间：2021-09-17 15:15
关键词：
锻压
机械工程
答案解析
<p> （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<br> （2）坯料端面应平整并于轴线垂直<br> （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。</p>
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镦粗时的一般原则是什么？
镦粗时，坯料端面、应平整并与轴线（）
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