Transactions of Materials and Heat Treatment

Title：Process parameters of straightening for Φ3~Φ5 mm thin-walled tubes

Authors： Zhang Shuang Wang Chundi Xu Shimin Wei Cuili Ren Yongen Sun Dengyue

Unit： Cross roll straightening is the final step in the production of steel pipes. To meet the stringent requirement on the quality of thin-walled tubes optimal setting of process parameters is critical. In order to conquer the difficulties in straightening process a model was established for a 10-roll straightening machine and the process parameters were studied. Therefore a 10-roll straightening model of thin-walled tube was established by finite element software ABAQUS and the optimal bending and compressed values were obtained by analyzing the X Y direction linear deviations and radial deviations of the tube under different conditions. Finally a formula was fitted based on the optimal process parameters. Process parameters of tubes under two different conditions were calculated according to the formula and then the reliability of the formula was verified through simulation and experiments which lay a theoretical foundation of the manufacture of thin-walled tube fine straightening machine.

KeyWords： thin-walled tube straightening bending value compressed value simulation

ClassificationCode：TG333.2

year,vol(issue):pagenumber：2017,42(9):56-62

Abstract：

Cross roll straightening is the final step in the production of steel pipes. To meet the stringent requirement on the quality of thin-walled tubes, optimal setting of process parameters is critical. In order to conquer the difficulties in straightening process, a model was established for a 10-roll straightening machine, and the process parameters were studied. Therefore, a 10-roll straightening model of thin-walled tube was established by finite element software ABAQUS, and the optimal bending and compressed values were obtained by analyzing the X, Y direction linear deviations and radial deviations of the tube under different conditions. Finally, a formula was fitted based on the optimal process parameters. Process parameters of tubes under two different conditions were calculated according to the formula, and then the reliability of the formula was verified through simulation and experiments, which lay a theoretical foundation of the manufacture of thin-walled tube fine straightening machine.

Funds：

河北省自然科学基金资助项目（E2012203008）

作者简介：张爽（1987-），女，硕士，助理实验师 E-mail：guojialengzha@sina.com 通讯作者：孙登月(1964-)，男，博士，博士生导师，教授 E-mail：1344890502@qq.com

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