在成型和定径时运用成组技术，可用一套开口孔型辊、定径辊生产一组外径相近的焊管。
With the grouping technique it is allowed to produce a group of tube sizes with similar O.
根据全息光弹实验结果得出的轧辊接触压力的分布规律，进而利用能量方法、轧压理论及厚壁筒理论对开口孔型、闭口孔型的轧辊接触压力进行计算。
The article bases on the result of elastic-optic experiment and uses the energy method, roll theory and thick tube theory to calculate the contact pressure in ringent and close section.
介绍了在角钢轧制中，开口切分孔型的优点和构成，并对开口及闭口切分孔进行了受力分析比较。
The advantage and forming of open slitting pass used in Angle steel rolling have been introduced.
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