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Abstract：
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For the five-meter casing ring forgings with shaped section of 2219 aluminum alloy, the cold bulging process analysis and optimization were carried out to enlarge the diameter of ring to the target size and improve the strain uniformity of each part of ring. Then, the cold bulging technology of ring was designed, and the cold bulging process of ring was analyzed by Deform 3D. Furthermore, the finite element analysis results were extracted, the stress analysis at different locations of ring was conducted, and the deformation characteristics and the deformation rule of ring in the cold bulging process were obtained. Combined with the deformation characteristics of cold bulging technology for ring, the original bulging process was optimized to improve the strain uniformity of each part of ring, and the effectiveness of the process was verified by the actual bulging process experiments. Finally, when the ring was bulged, the split mold rotation scheme was designed to achieve the deformation optimization of ring. And the optimized bulging process greatly improves the strain uniformity of each area of ring, which provides a reliable theoretical analysis and optimization scheme for the cold bulging process of five-meter casing ring forgings with shaped section of 2219 aluminum alloy.
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Funds：
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国家自然科学基金面上项目（51975439）
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AuthorIntro：
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魏辉(1995-)，男，硕士研究生，E-mail：huiw95@126.com；通讯作者:兰箭（1972-），男，博士，教授，E-mail:jlan@whut.edu.cn
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Reference：
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