Design method of special-shaped blank for equal-flash forging of square forge piece

By designing irregular blanks and adopting an inner arc groove and straight wall structure, the problem of difficult metal flow during the forging process was solved, the filling performance and material utilization were improved, and the production efficiency was increased.

CN120874268APending Publication Date: 2025-10-31SHAANXI HONGYUAN AVIATION FORGING
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Patent Information

Application Number
CN202510890569.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-30
Publication Date
2025-10-31

AI Technical Summary

Technical Problem

During the forging process, it is difficult to fill the edges and rounded corners where metal flow is difficult. Existing technologies usually solve this problem by increasing the amount of billet or increasing the design allowance, but the effect is not good, resulting in low material utilization and low production efficiency.

Method used

A special-shaped blank is designed, which adopts an inner arc groove and a straight wall structure. By combining the groove with a bevel and the straight wall part, the design of the special-shaped blank of the forging is optimized to ensure that the four corners are filled and formed at the same time, and to prevent the formation of large flash.

Benefits of technology

It improves the filling capacity and material utilization of forgings, reduces the number of forming passes, and increases production efficiency.

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Abstract

The invention belongs to the field of forging, and relates to a design method of a special-shaped blank for flash forging of square forgings and the like. The method comprises the following steps: step 1, obtaining the sizes of a forge piece in the length direction, the width direction and the thickness direction; 2, according to the thickness of the forge piece and the characteristics of metal used by the blank, the thickness of a special-shaped blank is selected, the appearance, the length, the width and the thickness of the special-shaped blank are set, the special-shaped blank is a plate with four special-shaped corners, and metal materials are pre-distributed to the four corners and the edges of the forge piece through the four special-shaped corners; and 3, on the basis of the length, the width and the thickness of the special-shaped blank, the detailed size of the special-shaped blank is set, and large flashes are prevented from being formed on the four edge parts while four corners are simultaneously filled and formed in the forging process of the forge piece.
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