Transactions of Materials and Heat Treatment

Title：Steel tube straightening theory based on the relative deflection and its experimental verification

Authors： Chen Kaikai Qi Mingxia Yang Weichao Liu Fei

Unit： China University of Petroleum China Oilfield Services Ltd.

KeyWords： pipes straightening elastic-plastic deformation relative deflection

ClassificationCode：TG306

year,vol(issue):pagenumber：2014,39(2):123-127

Abstract：

Straightening is an important step to make the pipes meet industrial requirement in manufacturing and repairing process, and theoretical research on the process of pipe straightening can provide implications for application. The relationship between the force and the deflection in straightening was achieved by elastic-plastic analysis of the three processes for straightening. The concept of relative force and relative deflection was put forward, whose relationship was dominated by the diameter ratio. The relative force and relative deflection curves with different diameter ratios were acquired, and the way based on relative deflection to calculate the straightening deflection was discussed.Finally，the experiment was conducted to confirm the theory, which verified the theory well, and the deviation was analyzed.

Funds：

中国石油大学研究创新基金（CX-1228）

陈凯凯（1990-），男，硕士研究生

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