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Springback characteristics in U-channel forming of tailor rolled blank

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文摘 Residual stress developed during the rolling process of tailor rolled blank (TRB) can affect the springback of finished parts considerably. Springback characteristics of unannealed and annealed TRBs were investigated by means of numerical simulation and experiments taking U-Channel as an example. TRBs were annealed by the annealing process (700 ℃, holding time 10 h), then stamping and springback processes of unannealed and annealed TRBs were simulated, and corresponding experiments were also carried out. Effects of the transition zone length, the blank thickness, the friction coeffcient and the die clearance on the springback of TRB were analyzed. The results demonstrate that the springback of TRB annealed at 700 ℃ for 10 h reduces significantly. For unannealed and annealed U-Channels, the springback of TRB U-Channel is in direct proportion to the die clearance and is in inverse proportion to the transition zone length, the blank thickness and the friction coeffcient. Springbacks of the thinner monolithic (uniform thickness) blank, the thinner side of TRB, the thicker side of TRB and the thicker monolithic blank are sorted in descending order.
来源 Acta Metallurgica Sinica ,2012,25(3):207-213 【核心库】
关键词 Tailor rolled blank ; Springback ; Annealing
地址

1. School of Automotive Engineering, Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian, 116024  

2. Research Institute of Science and Technology, Northeastern University, Shenyang, 110819

语种 英文
ISSN 1006-7191
学科 金属学与金属工艺
基金 Fundamental Research Funds for the Central Universities ;  国家自然科学基金 ;  国家973计划
文献收藏号 CSCD:4586730

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