Transactions of Materials and Heat Treatment

Title：Optimization design on shape of preform for high pressure common rail forgings

Authors：

Unit：

KeyWords： high pressure common rail roll forging preform forging preform design flash control

ClassificationCode：TG316

year,vol(issue):pagenumber：2021,46(12):1-5

Abstract：

In order to improve the utilization rate of materials, the shape of preform for Q4041 high pressure common rail forgings was optimized and designed. Then, according to the large amount of flash in the middle part of final forgings in actual production, the shape of dumbbell preforms was designed, and the process method of using roll forging preform to replace the existing preform was proposed. Furthermore, four different shapes of preform were designed, and the forging process of preforms was simulated by finite element software. Finally, the preform was fabricated by machining, and the actual forging experiment was carried out. Compared with the simulation results, the preform shape which completely filled the cavity and had the least flash in the four roll forging preform schemes was determined. The experimental results show that the results of finite element simulation are consistent with those of the actual forging process, and the flash is reduced with 35% with the optimized preform in the forging production. Thus, the preform process by the roll forging is feasible.

Funds：

山东省重大科技创新工程项目（2019JZZY010431）；日照市重大科技专项计划（2020CXZX1207）

马新武(1975-)，男，博士，教授 E-mail：maxinwu@sdu.edu.cn 通信作者：赵国群(1962-)，男，博士，教授

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