Transactions of Materials and Heat Treatment

Title：Bending springback control of advanced high-strength steel Strenx960

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ClassificationCode：TG386

year,vol(issue):pagenumber：2020,45(11):25-29

Abstract：

Swedish advanced high-strength steel Strenx960 was used as the manufacturing material of telescopic boom, and the influence laws of various process parameters on the bending process of high-strength steel Strenx960 were studied. Then, the material parameters of high-strength steel Strenx960 were obtained by the component and mechanical performance tests, and taking plate thickness, punch fillet radius, friction coefficient, stamping speed and other process parameters as the independent variables, the orthogonal test was designed. Furthermore, the better process scheme was determined by combining finite element numerical simulation. The results show that the plate thickness, the punch fillet radius and the friction coefficient have important effects on V-shaped bending springback and cracking of high-strength steel Strenx960, while the impact of stamping speed is smaller. When the plate thickness is 3 mm, the punch fillet radius is 12 mm, the friction coefficient between plate and die is 0.2, and the stamping speed is 120 mm·s-1, the springback angle of high-strength steel Strenx960 is 11.7°, no cracking occurs at the bending area, and the quality of bending parts is proved to be good by practical test.

Funds：

随州市新能源、轻量化、智能化关键核心技术研发项目(随科发［2019］9号)

郑淇文（1996-），男，硕士研究生 E-mail：zqiwen1996@outlook.com;通讯作者：朱春东（1963-），男，硕士，教授 E-mail：zcdzcd6252@sina.com

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