Acta Metallurgica Sinica (English Letters) ›› 1991, Vol. 4 ›› Issue (9): 184-190.

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ECCENTRICITY CHANGE IN TUBE SINKING

YAO Ruohao ZHONG Jianhua HUANG Jianfang ZHANG Ruhua South Institute of Metallurgy,Ganzhou,Jiangxi,China   

  • 收稿日期:1991-09-11 修回日期:1991-09-11 出版日期:1991-09-11 发布日期:2009-10-10

ECCENTRICITY CHANGE IN TUBE SINKING

YAO Ruohao ZHONG Jianhua HUANG Jianfang ZHANG Ruhua South Institute of Metallurgy,Ganzhou,Jiangxi,China   

  • Received:1991-09-11 Revised:1991-09-11 Online:1991-09-11 Published:2009-10-10

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摘要： <正> The rectification of eccentricity was revealed to be more effective in tube sinking than drawingwith a mandrel.The ratio of thickness to diameter of tube blank on both sides of thick and thinwall seems to be the principal influential factor in rectifying eccentricity.The greater the ini-tial outside diameter and the initial wall thickness difference are and the less the initial wallthickness of the tube blank is,the better the rectification is.

Abstract: The rectification of eccentricity was revealed to be more effective in tube sinking than drawing with a mandrel.The ratio of thickness to diameter of tube blank on both sides of thick and thin wall seems to be the principal influential factor in rectifying eccentricity.The greater the ini- tial outside diameter and the initial wall thickness difference are and the less the initial wall thickness of the tube blank is,the better the rectification is.

Key words: sinking tube, eccentricity, rectifying