Transactions of Materials and Heat Treatment

Title：Manufacture of die forgings for aircraft ultra-high strength steel front-lifting outer cylinder based on numerical simulation

Authors： Li Pengchuan Zhang Rui

Unit：

KeyWords：

ClassificationCode：TG316.3

year,vol(issue):pagenumber：2021,46(9):277-283

Abstract：

Thermal radiation coefficient, heat exchange coefficient and friction coefficient with dies of 300M steel were determined by physical boundary measurement test. The stress-strain curve of 300 M ultra-high strength steel was obtained by completion of thermal simulation compression test with cutting samples from billets of the same specification. The physical boundary parameters and stress-strain curve were imported into the finite element simulation software to establish a numerical simulation space highly consistent with the actual production conditions. With the numerical simulation technology on the whole process, the blank forming process and die forging process were continuously iteratively optimized.The forming process of front-lifting outer cylinder die forgings was accurately predicted and the material work ratio of forgings was controlled within 1.2. The material consumption was controlled and the short process schemes of 3-heatings blank-making and 2-heatings die forging was complied. The trial production of forgings was manufactured successfully. The stable manufacturing of the short process for die forgings of aircraft front-lifting outer cylinder was achieved, and the high-quality products with qualified overall dimensions and excellent microstructure and performance were received.

Funds：

航空核电及石化等领域超大构建高效低成本增材制造技术的应用示范（2018YFB1106500）

李蓬川(1973-)，男，教授级高工 E-mail：rid@163.com

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