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本专利建议采用二辊式或三辊横向螺旋轧制来消除毛管的偏心度。毛管的偏心度愈大,为校正偏心度而加在钢管外径上的压下量也应愈大。在喂入角为8°的二
This patent recommends the use of two-roll or three-roll horizontal spiral rolling to eliminate the eccentricity of the capillary. The larger the eccentricity of the capillary tube, the larger the reduction amount applied to the outer diameter of the steel tube for correcting the eccentricity should be. At a feed angle of 8 ° two