A die design method capable of regulating strain and filling of high package forgings

By optimizing the mold design parameters in the forging process through full-process numerical simulation technology, the problem of uneven filling of high-end forgings was solved, and the complete filling of forgings and the improvement of material utilization were achieved.

CN120974656BActive Publication Date: 2026-06-23CHINA NAT ERZHONG GRP DEYANG WANHANG DIE FORGING CO LTD
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Patent Information

Application Number
CN202511130777.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-08-13
Publication Date
2026-06-23
Estimated Expiration
2045-08-13

AI Technical Summary

Technical Problem

Existing technologies lack mold design methods that can control the strain and filling of high-strength forgings, resulting in uneven filling in local areas of the forgings, affecting the mechanical properties of the forgings, and also leading to low design efficiency and low material utilization.

Method used

By using full-process numerical simulation technology, the height of the blank and the design parameters of the mold during the forging process are determined, such as the depth of the upper mold cavity, the draft angle and the radius of the fillet, to ensure that the forging is fully filled in the mold and to control the uniformity of strain.

Benefits of technology

This method enables complete filling of the forging in the mold, improves material utilization, reduces the incidence of material shortage, simplifies mold design, and enhances design efficiency and the mechanical properties of the forging.

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Abstract

This invention relates to a die design method for controlling the strain and filling of high-lumen forgings, belonging to the field of forging die design technology. The method includes: using full-process numerical simulation technology to simulate and analyze the forging process, determining the height and diameter of the blank (L1 and h1); designing the lower die and its cavity based on the forging contour (h2); designing the upper die and its deep cavity based on the high-lumen forging (H, α, R, and L2 < L1); obtaining the upper die's downward pressure t during forging, where t = h1 - h2; comparing the relationship between H and 0.68t to obtain the comparison result; and determining the values ​​of α and R based on the comparison result. This method controls the strain of the high-lumen forging during forging by adjusting the height of the blank, ensuring complete filling of the deep cavity.
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