英语翻译in drawing,the limit of deformation is reached when the lode required to deform the flang becomes greater than the load -carring capacity of the cup wall.the failure site will be in the unwork area near the bottom of the cup wall.the hold-down pressure on top of the blank must be sufficient to keep the material from wrinkling as it goes into the die.
问题描述：
英语翻译
in drawing,the limit of deformation is reached when the lode required to deform the flang becomes greater than the load -carring capacity of the cup wall.the failure site will be in the unwork area near the bottom of the cup wall.the hold-down pressure on top of the blank must be sufficient to keep the material from wrinkling as it goes into the die.
答
在图中（drawing也可指拉制,吃不准）当使法兰（凸缘）变形所需的负荷（原文lode矿脉讲不通）大于杯壁的负载承载容量时就达到变形的极限,故障点将位于接近杯壁底部的未加工区,毛坯顶部的夹持压力必需足以使材料进入模子时不会起皱.