Transactions of Materials and Heat Treatment

Title：Design and development on a lightweight scheme of hot roll bending for rear underrun protection of a light truck

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ClassificationCode：TG386

year,vol(issue):pagenumber：2022,47(4):134-140

Abstract：

The hot roll bending full tubular structure scheme of rear underrun protection for a light truck was designed, and a light weight of 30.2% was achieved. According to the requirements of static loading test, the simulation evaluation model was established, and the accuracy of the simulation model was verified by the test. The simulation model was established based on the test results, the individual performances of the original design scheme and the hot roll bending optimization deisgn scheme were compared. Then, the cross-bar and each bracket tube were trial-produced by the hot roll bending process to obtain the tubes with tensile strength greater than or equal to 1500 MPa, and in the hot bending state of hot roll bending, the bracket tube with the bending radius of 2d was realized without wrinkling. Furthermore, the material utilization rate and the processing efficiency were improved by splicing and processing two pieces. The results show that the hotroll bending tubular structure is suitable for rear underrun protection, which has simple structure, strong universality and short manufacturing process, and can realize the technical advantages of low comprehensive cost for materials and processes.

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作者简介：陈仙风（1976-），女，博士，高级工程师 E-mail：chenxianfeng@baosteel.com

Reference：

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