The outer cup includes a major diameter mounting flange portion terminating in a curl, a minor diameter wear sleeve portion, and a transition portion joining the major and minor diameter portions.

外层杯包括大直径延伸段在卷曲的部分，一小直径套管磨损部分终止，并加入一个过渡的部分主要和次要直径部分。

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By stress analysis, this article gives a calculation method on a spherical cap joining the flange ring by welding.

通过应力分析，给出了带法兰的无折边球形封头的计算方法。

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