Transactions of Materials and Heat Treatment

Title：Stretch-bending process of profile frame with obtuse angle under displacement control mode

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ClassificationCode：TG386

year,vol(issue):pagenumber：2020,45(11):106-110

Abstract：

For the profile frame with obtuse angle of a carrier rocket, the stretch-bending under displacement control mode was studied by experiments, and the influence laws of technological parameters on the forming accuracy of part were analyzed. The results show that the flatness, angle and radian of part after forming decrease with the increasing of pre-stretching amount for the second stretch-bending, and the flatness and angle of part after forming decrease, but the radian increases with the decreasing of wrap angle for the first stretch-bending. Furthermore, the stretching amount after stretch-bending of profile frame was measured, and it was concluded that in order to increase the stretching amount of middle part and make the deformation of part more uniform and higher accurate, the wrap angle of the first stretch-bending should be decreased, and the pre-stretching amount of the second stretch-bending should be increased. Finally, the optimized technological parameters were attained by experiments, and based on the above parameters, the qualified parts were formed with less bottom edge tilting extent.

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李倩（1985-），女，硕士，工程师 E-mail：liqianfly99@163.com

Reference：

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