Transactions of Materials and Heat Treatment

Title：Simulation and process analysis on hot forging for large machete plate forgings

Authors： Feng Chao Wang Rongqi Gao Ke Han Haochen

Unit： Key Laboratory of CNC Equipment Reliability Ministry of Education School of Mechanical and Aerospace Engineering Jilin University

KeyWords： large forgings machete plate forming curvature free forging high\|temperature deformation

ClassificationCode：TG316

year,vol(issue):pagenumber：2022,47(6):26-34

Abstract：

For the large machete plate forgings, the high\|temperature free forging process was studied and analyzed. Then, the forging process of pre\|fabricated unequal thickness billet to form machete plate forgings was simulated by Deform\|3D software, and the influences of different process parameters on forming curvature of machete plate forgings in forming process were analyzed. Meanwhile, the grain recrystallization model and damage accumulation model were integrated into the simulation process to predict the grain stucture evolution and cracking behavior inside the forgings. The results show that the ratio of curvature radius to plate width for machete plate of forgings after forming increases with increasing of thickness ratio of inner and outer sides for the preform and the ratio of final forging feed\|length to plate thickness, and decreases with increasing of the ratio of plate width to plate thickness in final forging. Based on the simulation results, the estimated relationship between each process parameter and the curvature radius of machete plate forgings after forming is established. Meanwhile, the process is beneficial to increase the utilization rate of materials, improves the grain structure inside the forgings and controls the occurrence of damage and cracking.

Funds：

国家自然科学基金青年基金资助项目（51805204）；吉林省教育厅“十三五”科技项目（JJKH20200976KJ）

冯超(1987-)，男，博士，讲师 Email：fengchao@jlu.edu.cn

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