采用方形坯料深拉延圆筒形件是一项新技术。

With square blank to draw cylinder is a newly technology.

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覆盖件拉延工艺的设计一般包括以下内容：翻边展开、拉深方向选择、坯料估算、工艺补充面的搭建、压料面的添加以及拉深筋的布置等等。

The design of auto-body forming process commonly includes edge un-wrapping, choice of drawing direction, roughcast reckoning, design of addendum, adding the binder surface and setting the draw bead.

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设置拉延筋是板料拉深成形过程中控制材料流动的有效方法。

Drawbead application is an effect method in sheet metal deep-drawing process to control material flow.

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