In order to increase the volume deformation rate as LPG bottle broken, a boss-backing has been developed for welding the bottles.

为提高液化石油气钢瓶破裂时的容积变形率，研制了带有凸台结构的焊接衬圈。

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Material flowing behavior of shell for air bag in extrusion are also analyzed by means of 2-d simulation software of volume deformation.

采用体积成形二维模拟软件分析了安全气囊壳体挤压成形中材料的流动规律。

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Material flowing behavior of shell for air bag in extrusion are also analyzed by means of 2-d simulation software of volume deformation.

采用体积成形二维模拟软件分析了安全气囊壳体挤压成形中材料的流动规律。

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