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Precision research in sheet metal flanging and upset extruding

Date:2016/3/21 16:28:46 Origin:本站原创 Hits:

Sheet metal stamping forging process is a newly developed composite metal forming process in recent years. Traditional stamping and forging processes are organically integrated in the new process, which is applied to overall plastic formation of structural parts with large surface area and large thickness difference. Sheet metal flanging and upsetting process was simulated in the paper by using the general finite element method software MSC. Marc. The effects of rolling anisotropy, elastic modulus, and initial yield stress, hardening exponent and initial thickness of sheet on final spring back angle of the steel sheet were studied. The result shows that the rolling anisotropy significantly influenced the thickness distribution of the sidewall after flanging and that the final spring back angle decreases with the growth of elastic modulus and increases with the growth of initial yield stress and initial thickness of sheet. The hardening exponent has little influence on final spring back angle.

Metal plastic forming is a universal method in the part manufacturing process. Shapes of parts evolved towards integration and complexity, and the requirements for product properties became more stringent. Thus, some new technology appeared. In the early 1990 s, Takashi Nakano proposed flow control of blank sheet forming for the first time.

*Courtesy of IHS engineering 360

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