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Method for using hot isostatic pressing to produce double-alloy blisk

A hot isostatic pressure diffusion, integral blisk technology, applied in welding equipment, manufacturing tools, non-electric welding equipment, etc., can solve problems such as difficulty, many influencing factors, and complex processes, and achieve the effect of reducing difficulty and improving quality

Active Publication Date: 2013-12-18
CENT IRON & STEEL RES INST
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  • Abstract
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  • Claims
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AI Technical Summary

Benefits of technology

This new method helps connect two materials together more easily without causing any issues like cracks or other defects during heat treatment processes.

Problems solved by technology

The technical problem addressed by this patented innovative design relates to achieving better efficiency and durability in gas turbomachines while reducing their size without compromising on its overall function capabilities. Bladed structures have been developed due to advancements made from both materials science and engineering techniques such as laser fusion joining and sinter forming. However, these methods require expensive equipment and complex processing steps during production.

Method used

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  • Method for using hot isostatic pressing to produce double-alloy blisk
  • Method for using hot isostatic pressing to produce double-alloy blisk
  • Method for using hot isostatic pressing to produce double-alloy blisk

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Embodiment Construction

[0021] combined with figure 1 Further explain the method of the present invention to prepare a double-alloy blisk by using superalloy powder as the intermediate layer hot isostatic pressure diffusion connection. The body of the double-alloy blisk is a powder superalloy FGH91, and the blade ring is a cast superalloy K418B.

[0022] (1) Prepare FGH91 superalloy powder by plasma rotating electrode method, powder sieving, electrostatic de-inclusion treatment, and then undergo hot isostatic pressing (1180~1200℃ / 4h / 130MPa) to make dense powder superalloy disk blank;

[0023] (2) The K418B blade ring formed by precision casting and the FGH91 disk blank are machined, gap assembled and welded, and the gap size between the inner diameter of the blade ring and the outer diameter of the disk is 1~2mm to make a double alloy integral blade disk jacket;

[0024] (3) Select FGH91 alloy powder with the same chemical composition, particle size composition, and purity as the disc body, and use i...

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Abstract

The invention relates to a method for using hot isostatic pressing to produce a double-alloy blisk and belongs to the technical field of high-temperature alloy connection. The blisk body is made of powder high-temperature alloy, a blade ring of the blisk is made of casting high-temperature alloy. The chemical component, granularity composition and purity of the high-temperate alloy powder used in the intermediate layer are identical with those of the blisk body. Good flowability of the high-temperate alloy powder and the fact that the high-temperate alloy powder is identical with the blisk body in terms of organization and performance after hot isostatic pressing are utilized to realize reliable diffusion bonding of the blade ring and the blisk body. Compared with the prior art, the method has the advantages that difficulty of different high-temperature alloy blisk hot isostatic pressing diffusion bonding is lowered, and quality of diffusion bonding joints is increased.

Description

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Claims

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Application Information

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Owner CENT IRON & STEEL RES INST
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