The effects of the axial force of the point bar, both on the wall thickness of the pierced shell and its uniformity, are all notable under high cross angles.
在大倾角条件下，顶头轴向力对毛管壁厚及其均匀性的影响都很显著。
The causes producing wall thickness difference in a same pierced shell are expounded and the influences of piercing, rolling and mandrel drawing on the difference are studied.
阐述了穿孔毛管产生同管壁厚差的原因，研究了穿孔和轧管工艺对钢管同管壁厚差的影响。
The influences of the separating force and axial force of the piercing point bar on the wall thickness of the shell pierced, and on its lateral uniformity are analyzed quantitatively.
定量分析了穿孔轧制力和顶头轴向力对毛管壁厚及其横向均匀性的影响。
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