A hot working process for an aero-engine casing ring-shaped forging

By heating, upsetting/punching, free forging, ring rolling and solution treatment of GH3625 alloy, the problems of mixed grains and unqualified yield strength of ring forgings for aero-engine casings were solved, high-quality forging production was achieved and manufacturing costs were reduced.

CN117655679BActive Publication Date: 2026-06-12SHAANXI HEYE SPECIAL STEEL TOOL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHAANXI HEYE SPECIAL STEEL TOOL
Filing Date
2024-01-23
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

In the manufacturing of ring-shaped forgings for aero-engine casings, existing technologies suffer from poor forging quality stability, and are prone to problems such as mixed grains and unqualified yield strength. This is mainly due to the narrow forging processing window and the sensitivity of microstructure and mechanical properties to hot working parameters.

⚗Method used

Using GH3625 alloy as the material, the forgings are manufactured through steps such as heat treatment, upsetting/punching, free forging, ring rolling, and solution treatment. The heating temperature, deformation amount, and time are controlled, and combined with composite heat-insulating agents, to ensure the uniformity of the microstructure and mechanical properties of the forgings.

🎯Benefits of technology

It achieves a grain size of 6-7 at room temperature and a yield strength of over 460MPa, meeting the technical requirements for aero-engine casing forgings. Furthermore, it reduces manufacturing costs by recycling scrap materials and improves the mechanical properties and wear resistance of the forgings.

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Abstract

The application discloses a hot working process of an aero-engine casing ring-shaped forging, which comprises the following steps: S1, heating treatment, S2, upsetting and punching treatment, S3, machining treatment, S4, solid solution treatment, and S5, rough machining; the aero-engine casing ring-shaped forging processed by the application has a grain size of 6-7 levels at room temperature, and a yield strength of more than 460 MPa, which can meet the technical requirements that the grain size of the aero-engine casing ring-shaped forging is greater than or equal to 4-5 levels and the yield strength is greater than or equal to 410 MPa.
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