Transactions of Materials and Heat Treatment

Title：Influence of forming rate on stretch forming for 5 m melon petal

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ClassificationCode：TG386

year,vol(issue):pagenumber：2022,47(7):122-126

Abstract：

The influences of five different forming rates on stretch forming process for 5 m melon petal were analyzed by finite element analysis method, and the relationship between stress and wall thickness distribution of part and forming rate was predicted. Then, through the experimental verification, the influences of forming rate on forming accuracy, mechanical performances and so on for 5 m melon petal were obtained under the condition of real stretch forming. The results show that the increasing of forming rate has no obvious effect on surface quality and profile accuracy of product. When the forming rate is less than 0.3-0.4 mm·s-1, the mechanical performances of the product fluctuate with the increasing of forming rate, and the downward trend is not obvious. However, when the forming rate is greater than 0.3-0.4 mm·s-1, the mechanical performances of the product decrease significantly with the increasing of forming rate, and there are signs of fracture at the clamp of melon petal. In order to improve the production efficiency, the forming rate within the platform range can be a dopted.

Funds：

天津市科技支撑项目（17YFZCGX00530）

作者简介：李玉辰（1988-），男，硕士，工程师 E-mail：nxca2004.student@sina.com

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