Transactions of Materials and Heat Treatment

Title：Numerical simulation and test study on precision rolling of CuNi90/10 copper alloy for high neck flange

Authors： Zheng Congfang Yang Qingyun Zhou Tiezhu Ma Junpu Yu Yan

Unit： Luoyang Ship Material Research Institute

KeyWords： copper alloy high neck flange ring rolling rotation speed of drive roller feeding speed tapered inner hole

ClassificationCode：TG146.1

year,vol(issue):pagenumber：2023,48(3):132-138

Abstract：

The neck height and the outer diameter of chassis for high neck flange are large, and the production efficiency is low by the method of machining after forging. Therefore, in order to improve the production efficiency, through the analysis on the existing ring rolling process, the precision rolling model of the high neck flange was established by finite element software, and the rolling process of the high neck flange with an typical specification of the outer diameter of Φ159 mm was simulated and analyzed. Then, the influences of rotation speed of drive roller, feeding speed of core roller and blank forms on the rolling process of the high neck flange were investigated. The results show that increasing the rotation speed of drive roller and the feeding speed of core roller can decrease rolling defects, and the use of tapered inner hole can avoid butterfly defects in the inner hole. Finally, the inner hole form of flange is determined as a tapered inner hole, and the rotation speed of drive roller ω=5 rad·s-1 and the feeding speed of core roller V=3 mm·s-1. Furthermore, a supporting die is designed for test verification, and the trial production of the high neck flange with typical specification is completed to verify the feasibility of the high neck flange rolling process.

Funds：

国家重点研发计划项目（2021YFB3700700）

作者简介：郑丛芳(1984-)，女，硕士，工程师 E-mail：lindy-fangfang@163.com

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