A method for producing a 6061-t651 aluminum alloy thick plate

By optimizing the matching of process parameters for ingot solution treatment, homogenization integrated heating, and online quenching, the problems of high energy consumption and low strength in the production of 6061-T651 aluminum alloy thick plates were solved, achieving high-efficiency, low-energy production of high-strength aluminum alloy thick plates.

CN118417822BActive Publication Date: 2026-06-02GUANGXI LIUZHOU YINHAI ALUMINUM IND
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Patent Information

Application Number
CN202410352446.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-03-26
Publication Date
2026-06-02
Estimated Expiration
2044-03-26

AI Technical Summary

Technical Problem

The existing production process for 6061-T651 aluminum alloy thick plates involves many steps, high energy consumption, and a long production cycle, resulting in low strength of the finished product. The existing online quenching method leads to insufficient precipitation of secondary phases, which affects the strength performance.

Method used

By rationally designing the process flow and parameters, including integrated heating for ingot solution treatment and homogenization, hot rough rolling control, and online quenching, the precipitation of Mg2Si is controlled. By adopting efficient process parameter matching, the separate homogenization treatment and plate heating process are eliminated, and the plate is directly hot rolled and quenched online.

Benefits of technology

It has enabled the efficient and low-energy production of high-strength 6061-T651 aluminum alloy thick plates, shortened the production cycle, and improved the strength performance of the finished products.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a production method of 6061-T651 aluminum alloy thick plate and relates to the technical field of aluminum alloy manufacturing. The production process of the aluminum alloy thick plate comprises the following steps: melting and casting, face milling, solid solution and homogenization heat treatment, hot rough rolling, online quenching, shearing, stretching, artificial aging and plate sawing. The solid solution and homogenization integral heating, hot rough rolling opening rolling temperature, reduction, rolling speed and non-use of emulsion cooling are reasonably designed, the plate temperature in the hot rough rolling and transfer process is controlled to be above the solid solution degree curve, the online quenching operation is carried out, the plate with a high supersaturation solid solution state is obtained, the plate is further sheared to a fixed size, pre-stretched, artificially aged and sawed to obtain the finished plate. The reasonable matching of the process flow and process parameters is used for the 6061-T651 aluminum alloy thick plate with a thickness of 20-150 mm, the separate homogenization treatment of the ingot and the plate temperature compensation process after the hot rough rolling are omitted, the production energy consumption is reduced, and the production cycle is shortened.
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Citation Information

Patent Citations

  • Online quenching method for aluminum alloy medium-thickness plate and equipment for implementing same

    CN102517526B

  • Online aluminum alloy plate quenching process and equipment

    CN107245560A

  • Production method for reducing internal stress of 6061 aluminum alloy plate

    CN117165878A

  • 6000-series aluminum alloy plate with high baking strength and preparation method of 6000-series aluminum alloy plate

    CN117305670A