Transactions of Materials and Heat Treatment

Title：Numerical simulation of casting-forging integrated breakdown process

Authors： Zhao Ziwen Niu Liqun Liang Zhenglong Zhang Yisheng Wang Xuming Zhang Qi Song Daochun

Unit： Lanzhou LS Energy Equipment Engineering Institute Co. Ltd. Gansu Engineering Research Xi′an Jiaotong University Lanzhou LS Casting and Forging Co. Ltd.

KeyWords： 12Cr2Mo1V THERCAST FORGE cogging casting and forging integrated process shrinkage numerical simulation

ClassificationCode：TG319

year,vol(issue):pagenumber：2017,42(9):6-13

Abstract：

For the problem of disqualified 13-ton 12Cr2Mo1V ingot steel after cogging by ultrasonic testing, a numerical simulation technology of casting and forging integrated process was proposed. First, the simulation analysis of ingot casting and solidification processes was completed by THERCAST software, and then the casting data were introduced into the FORGE software to complete the final cogging simulation analysis. Simulation result shows that the shrinkage porosity of forgings is effectively predicted by casting and forging integrated process numerical simulation technology. The initial shrinkage of the ingot appears in the center, and its Niyama value is large. However, with the forging process, the shrinkage area of the center gradually disappears, and its Niyama value is getting smaller. Furthermore, micro shrinkage and segregation can be improved or eliminated by adjusting the important process parameters of the cogging process, such as forging ratio, relative feeding and temperature control.

Funds：

甘肃省科技计划资助项目（2015GS05896）

赵子文（1967-），男，硕士，高级工程师 E-mail：zgzhaoziwen@163.com

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