A high-temperature alloy electron beam selective melting anti-deformation tool and method

Through the hard-soft-hard combination of U-shaped tooling and oblique iron structure, the problems of thermal cracking and deformation during electron beam selective melting and forming of high-temperature alloys are solved, and efficient and low-cost high-temperature alloy forming is achieved, which is suitable for the manufacturing of key components in aerospace and other fields.

CN116372191BActive Publication Date: 2025-09-23XI AN JIAOTONG UNIV
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Patent Information

Application Number
CN202310280031.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-03-21
Publication Date
2025-09-23
Estimated Expiration
2043-03-21

AI Technical Summary

Technical Problem

When forming high-temperature alloys through existing electron beam selective melting, there are problems with thermal cracks and deformation. Especially when forming under stainless steel substrate materials, it is easy for the material to have large stress constraints and rapid cooling, resulting in cracks and deformation, affecting product quality and precision.

Method used

The U-shaped tooling and oblique iron structure are adopted. The U-shaped tooling made of high-temperature alloy material and the base plate made of stainless steel are combined to form a hard-soft-hard combination. The softening characteristics of the stainless steel base plate are used to reduce the forming stress. Combined with the clamping fixation of the oblique iron, deformation and cracks are avoided.

Benefits of technology

It effectively reduces cracks and deformation during the forming process of high-temperature alloys, improves the dimensional accuracy and production efficiency of products, reduces costs, and is suitable for the manufacture of key components in fields such as aerospace.

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Abstract

The present invention belongs to the field of nickel-based and cobalt-based high-temperature alloy additive manufacturing (3D printing), and discloses a high-temperature alloy electron beam selective melting anti-deformation tooling and method. The present invention uses a U-shaped tooling made of a high-temperature alloy material, which is provided with a high-temperature alloy material inclined iron and a stainless steel substrate. The substrate is horizontally placed on the inclined iron, thereby forming a set of hard-soft-hard anti-deformation tooling. The softening property of stainless steel at high temperatures is utilized to reduce the strong constraint of the substrate on the workpiece to be formed, thereby reducing the problem of excessive stress and cracking during the forming process. The present invention uses a U-shaped tooling and a matching substrate to effectively reduce the problem of large softening deformation of the stainless steel substrate without affecting the electron beam selective melting forming.
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Citation Information

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