By observing the production of cavities and measuring the growth of cavities, a model explaining the formation of cavity nucleus in superplastic material was given out.
通过观察空洞的产生和测定空洞的长大，提出了一种超塑材料空洞的形核模型。
This paper introduces a method to controll a superplastic bulging by a gas-pressure and a height curve. This method can significantly reduce the thinning rate and unevenness of bulging material.
超塑性胀形控制有各种方法，本文介绍了一种按气压与高度曲线控制的方法，使成形过程更接近于等应变速率胀形，能进一步改善零件厚度的不均匀性。
This part by superplastic forming process is simpler and saving material over 60% than by machin…
超塑性成形工艺制造该零件比原机加工工艺简单，节省材料超过60%。
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