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Thin wall special-shaped tube bending forming is a significant economic benefit and social benefit of tube processing technology, it is a complex process involving a lot of factors, according to the present actual transformer used in the radiator pipe punching bending the defects of poor quality, this paper studies the transformer radiator pipe of bending simulation model, analyses the causes of the wrinkle, hedge bending forming process, using the method of numerical simulation, the finite element simulation analysis, the forming process of the stress and strain distribution rule is studied, find out the root cause of the wrinkle. Again to the stamping simulation analysis through positive and negative contrast, find out the optimal forming process, improve the forming quality. Through the simulation of the speed change influence on the forming quality, using cosine speed stamping can get good quality. By improving mold forward bending of wrinkling experiment, improve the mold after the bending test and springback experiment, verified the correctness and validity of the finite element simulation analysis model.
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