Transactions of Materials and Heat Treatment

Title：Hydroforming technology in integral forming of spherical parts

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ClassificationCode：TG394

year,vol(issue):pagenumber：2020,45(4):120-125

Abstract：

For the hydrobulging process of integral forming for spherical parts, the characteristics of middle sequence parts were analyzed and the forming process method was developed. Through numerical simulation and practical test, the influences of feeding amount and bulging pressure on the forming of parts were studied. Through the comparison between numerical simulation analysis and test results, it is proved that the numerical simulation can not only provide an correct direction for the test, but also is correct.The feeding amount of forming of spherical parts has a large influence on the forming accuracy of part. If the feeding amount is too large, there will be problems such as ring stacking and wrinkling in the forming process. If the feeding amount is not enough, it will lead to thinning and even fracture of parts. In addition, under the condition of reasonable feeding amount, it is necessary to establish reasonable bulging pressure according to different mold closing stages. If the bulging pressure is not reasonable, there will also be problems such as excessive thinning, wrinkling, stacking and so on.

Funds：

天津市科技计划项目（18YFCZZC00240）

杨声伟（1985-），男，硕士，工程师 E-mail：28401315@qq.com 通讯作者：施立军（1988-），男，硕士，工程师 E-mail：sit0202@163.com

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