Research on Springback Mechanism and Control of Ultra High Strength Steel in Roll Forming Process

doi:10.3901/JME.2018.02.131

Abstract

Abstract: Roll forming technology can obtain better products which have high strength, better performance and high precision and has been widely used in many fields. This paper focuses on research of springback control of ultra high strength steel, and investigate two different roller design. The finite element is built to analysis the distribution of equivalent plastic strain and equivalent stress value, and the springback mechanism of roll forming is expounded and a process methods to improve the springback is proposed. The result from the simulations and experiments show that the springback angle of part is smaller after optimizing the rollers, and the sectional dimension is better as well. The maximum error of springback angle is 1.66%. It shows that the springback angle have been controlled effectively. The simulation results show that the longitudinal strain value of the edge is reduced and tends to be smooth and the optimized process parameters can effectively reduce the redundant deformation and control the springback of the sheet.

Key words: numerical simulation, roll forming, roller design, springback control

CLC Number:

TH16

HAN Fei, NIU Lili, WANG Yun, YANG Yahui. Research on Springback Mechanism and Control of Ultra High Strength Steel in Roll Forming Process[J]. Journal of Mechanical Engineering, 2018, 54(2): 131-137.

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