辊弯成形技术能够生产高强度、性能佳、高精度的型钢产品，并且具有高效、节能、省材等特点，在许多领域得到广泛运用。针对高强钢辊弯成形后出现回弹现象，设计两种轧辊设计方案，建立ABAQUS有限元模型，分析不同设计方案下板材在成形过程中的等效塑性应变和等效应力的分布情况，重点阐述辊弯成形件回弹的成形机理，提出控制回弹的成形工艺方法；试验验证轧辊设计优化后工件回弹角度更小，成形精度更好，回弹角度最大误差为1.66%；通过仿真分析，轧辊设计优化后的成形件边部纵向应变值降低并趋于平缓，结果表明采用优化后的工艺参数可有效减小板材的冗余变形，并有效控制板材的回弹问题。
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.
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