Transactions of Materials and Heat Treatment

Title：Study on bulging and trust bending process with small radius of thin-wall tubes

Authors： XU Wei-ping1 WU Quan1 BAI Wen-bin2 QIU Wang-biao(1.School of Electric and Machine Engineering Gui Zhou Normal University Guiyang 550014 China 2.Honghu Mechanical Factory Anshun 561116 China 3.School of Mechanical Engineering Guizhou University Guiyang 550

Unit：

KeyWords： small radius tube bulging and trust bending process die structure

ClassificationCode：TG306

year,vol(issue):pagenumber：2008,33(5):106-109

Abstract：

On the basis of neutral layer migration theory,force and forming situations were analyzed in bending tubes.Bulging and trust bending process was adopted to manufacture small radius thin-wall 1Cr18Ni9Ti tube to overcome the difficulties,such as thinning,fracturing and wrinkling which always occurred in bending.The principles of this process were introduced,and the structure of bending die was designed.The result shows that the process solves the problems well and it has great reference values for tube manufacturing.

Funds：

贵州科学技术基金资助项目(黔科合J字[2008]2040号);; 贵州师范大学青年科技基金资助项目(2007-1-11)

Reference：

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[4]DG1103-1999锅炉管子制造技术条件[S].

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