Transactions of Materials and Heat Treatment

Title：Springback control on hydroforming for various specifications ellipsoidal scalloped segment

Authors：

Unit：

KeyWords：

ClassificationCode：TG394

year,vol(issue):pagenumber：2019,44(8):55-60

Abstract：

For the ellipsoid scalloped segment of various specifications, the process of hydroforming was simulated by software Dynaform. Based on the calculation results of springback obtained by free state, the springback control was realized initially by increasing the blank holding force and the drawing bead. The simulation result shows that the springback is reduced to less than 4.87 mm. In view of the consistent characteristic of the profile equation, the springback control of the die surface compensation with all specifications of ellipsoidal scalloped segment was studied, the die surface was optimized for the second springback compensation, and the actual profile compensation was finally completed according to the actual springback data. Furthermore, all qualified products meeting the design requirements of profile accuracy were obtained by tests, and the total amount of springback was effectively controlled within 1 mm. The results show that the springback control of multispecification ellipsoid scalloped segment forming with a set of dies can be realized by process parameter control and compatible profile compensation, which verifies the effectiveness and practicability of the simulation process and reduces the cost of die test and development cycle.

Funds：

天津市科技计划项目（17YFZCGX00530）

作者简介：田恕（1987-），女，硕士，工程师 Email：tian6shu@163.com

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