Transactions of Materials and Heat Treatment

Title：Numerical simulation study on central void defects control for heavy forgings

Authors： Liu Qian Huang Fang Wu Yuzhong

Unit： Guizhou University

KeyWords： heavy forgings void closing orthogonal experiment numerical simulation

ClassificationCode：TG311

year,vol(issue):pagenumber：2014,39(2):132-136

Abstract：

In order to eliminate the central void defects of heavy forgings during forging process, closure law of voids in heavy cylindrical forgings was investigated by numerical simulation and experiments. Orthogonal experiment was designed with ingot height to diameter ratio, reduction rate and void position as the factors, and the experiment scheme was numerical simulated by commercial software Deform-3D to analysis the impact of each factor on void closing. The results show that reduction rate is the main factor, followed by voids position and ingot height to diameter ratio. The voids are most easily to be closed if the ratio of height to diameter is equal to 1.The closure of voids goes up with the rising of reduction rate. The closer voids position near the center, the easier voids get closed.

Funds：

国家财政部重大科技成果转化资助项目（2011020）；贵州大学研究生创新基金资助项目（研理工 2013032）

刘倩（1988-），女，硕士研究生

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