Extrusion die

By adding a pre-deformed cavity inside the mold and controlling the metal flow rate, the problem of flow difference in the mold during the production of metal fin profiles was solved, achieving high precision and uniformity of microstructure and properties of the profiles, and meeting the high-quality requirements of aerospace aluminum alloy profiles.

CN224010840UActive Publication Date: 2026-03-20CHINALCO MATERIALS APPL RES INST CO LTD
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Patent Information

Application Number
CN202520642366.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-08
Publication Date
2026-03-20
Estimated Expiration
2035-04-08

AI Technical Summary

Technical Problem

Existing molds have the problem of large differences in the extruded metal flow in different parts when producing metal fin profiles, which leads to greater differences in microstructure and properties, making it difficult to meet the high precision and high surface quality requirements of aluminum alloy profiles for aerospace applications.

Method used

By adding a pre-deformation cavity inside the mold and adjusting the metal flow rate of the bar stock, the difference in metal flow rate in different parts can be reduced. The ratio of the projected area of ​​the pre-deformation cavity and the centerline spacing of the shaped cavity are designed to improve the dimensional accuracy and uniformity of the profile.

Benefits of technology

By regulating the metal flow rate, the dimensional accuracy control of the metal fin profile and the uniformity of the microstructure properties of each part were improved, thereby increasing the production efficiency of the mold and the quality of the profile.

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Abstract

The utility model discloses an extrusion die, and relates to the technical field of die design, in particular to an extrusion die which comprises a pre-deformation cavity and a shaping cavity which are arranged in a die main body and communicated with each other, and the projection area of the pre-deformation cavity in the axial direction of the die is larger than that of the shaping cavity in the axial direction of the die. According to the extrusion die, the pre-deformation cavity is additionally arranged in the die, and the metal flow velocity of a bar in the die is regulated and controlled, so that the flow velocity difference of extruded metal at different parts of a metal fin profile is reduced, and the extrusion efficiency is improved. And the structure property difference of each part is reduced.
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