Transactions of Materials and Heat Treatment

Title：Application of numerical simulation technology for metal flow velocity in eliminating folding defect of hot die forgings

Authors： Wang Fei Jin Zhaohui Xu Baoguo Song Jiabing

Unit： Anhui Anhuang Machinery Co. Ltd.

KeyWords： hot die forging folding metal flow change in flow velocity multiplied difference of flow velocity

ClassificationCode：TG31

year,vol(issue):pagenumber：2022,47(9):45-50

Abstract：

The metal flow velocity change of billet during hot die forging process was analyzed by numerical simulation technology, the metal flow velocity change at the forging folding and other defect positions was analyzed and summarized, and the relationship between multiplied difference of flow velocity and forging folding and other defects was obtained. Then, using this connection, the problems of folding and other defects encountered in the hot die forging process were analyzed from the multiplied difference of flow velocity, and the solution to the folding problems of hot die forgings such as disc forgings, steering knuckle forgings and so on were verified by production. The results show that the folding and other defect problems of hot die forgings can be solved by environmental factors such as mold optimization, control of mold temperatures and lubrication, etc. to affect the change of multiplied difference of flow velocity in the hot die forging process. Thus, in the forming process of hot die forgings, good metal fluidity, uniform flow velocity change and small multiplied difference of flow velocity are beneficial to the hot die forging and avoid forging folding and other defects. On the contrary, if the metal flow is too violent and turbulent, and the multiplied difference of flow velocity changes greatly, the forming possibility of folding and other defects for forgings becomes greater.

Funds：

王飞（1986-），男，学士，工程师 E-mail：3408wangfei@163.com

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