Transactions of Materials and Heat Treatment

Title：Application of Simufact Forming in heating and forging process simulation of 30CrNi2MoV steel ingot

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ClassificationCode：TG316.5

year,vol(issue):pagenumber：2024,49(1):59-66

Abstract：

Thermal simulation of high temperature tensile for 30CrNi2MoV steel was conducted by the Gleeble 3800 thermal simulator. The results show that when the forging temperature is ≥800 ℃, the percentage reduction of area is ≥93.8%, the stress-strain curve appears plastic deformation, and it is brittle deformation when the forging temperature is below 800 ℃. Then, the heating and forging processes of 9 t large steel ingot is simulated by Simufact Forming, and by combining the data of heating model and forging model, the final forging temperature is accurately controlled above 800 ℃ to ensure that the final forging deformation is in the plastic deformation zone and reduce the crack sensitivity during the deformation process of the forging material. Furthermore, the deep cracks is effectively prevented from occurring during the deformation process to improve the surface quality of steel, and the simulation results are compared and verified with the actual production. The results show that the difference between the actual final forging temperature and the simulated temperature is less than 10 ℃, which indicates that the simulation model is acceptable. The heating time of 9 t large steel ingot is optimized to 21 h to avoid excessive heating time, which causes energy waste and coarse grains of the material structure to affect the mechanical properties.

Funds：

湖北省自然科学基金联合基金项目（2022CFD078）

作者简介：曾云(1988-)，男，学士，工程师 E-mail：zengyuncq@163.com

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