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Method for preparing high-purity nickel-based high-temperature alloy through electron beam induced refining and casting technology

A nickel-based superalloy, electron beam induction technology, applied in the direction of improving energy efficiency and process efficiency, can solve the problems of high energy consumption and increased alloy preparation costs, improve purity and metallurgical quality, and shorten production cycle Effect

Active Publication Date: 2019-11-08
DALIAN UNIV OF TECH
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  • Abstract
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  • Claims
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Problems solved by technology

Although the multi-link process, powder metallurgy process, electron beam rapid prototyping and laser cladding process can improve the metallurgical quality of the alloy and reduce the segregation of the ingot, they consume a lot of energy and increase the cost of alloy preparation

Method used

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  • Method for preparing high-purity nickel-based high-temperature alloy through electron beam induced refining and casting technology

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Embodiment Construction

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] Such as figure 1 As shown, a kind of equipment for preparing high-purity nickel-based superalloy by electron beam-induced refining casting technology, including electron gun 1, diffusion pump 2, pneumatic valve 3, mechanical pump 4, first water-cooled copper crucible 6, Roots pump 7, second water-cooled Copper crucible 8, crucible sup...

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Abstract

The invention discloses a method for preparing a high-purity nickel-based high-temperature alloy through the electron beam induced refining and casting technology. The method includes the steps that after an electronic gun is preheated, a small cylinder in a first water-cooling copper crucible is subjected to electron beam smelting, and beams are collected to the edge of one side of an ingot; after the ingot is completely solidified, the electronic gun is started again, electron beam spots uniformly and slowly scan the surface of the ingot from the side opposite to the final beam collecting region of the ingot to the final beam collecting region of the ingot, it is guaranteed that the alloy at the position where the electronic beam spots scan is completely melted, and scanning stops afterthe position close to the final beam collecting region of the ingot is scanned; the melted alloy in the first water-cooling copper crucible is cast into a second water-cooling copper crucible; and after an electron beam smelting furnace is cooled, the refined nickel-based high-temperature alloy is taken out. High-purity alloy melt and impurities are effectively separated on the basis of the electron beam refined nickel-based high-temperature alloy, electron beam induced refining and casting are combined, the production period of the nickel-based high-temperature alloy ingot is shortened, and the purity and the metallurgical quality of the ingot are improved.

Description

technical field [0001] The invention relates to a method for preparing an alloy, in particular to a method for preparing a high-purity nickel-based superalloy by an electron beam induced refining casting technique. Background technique [0002] Nickel-based superalloys are more and more important in aviation, aerospace, energy, chemical and other industrial fields due to their good high-temperature strength, high-temperature creep properties, excellent oxidation resistance, high-temperature fatigue properties, and good long-term structural stability. ,widely. [0003] At present, the traditional smelting methods of nickel-based superalloys include vacuum induction melting plus arc remelting, vacuum induction melting plus electroslag remelting and other dual processes, vacuum induction melting plus electroslag remelting plus arc remelting, vacuum induction melting plus vacuum arc Triple process such as remelting plus electroslag remelting, plasma remelting, powder metallurgy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/03C22C1/02C22B9/22
CPCC22C19/03C22C1/02C22B9/228C22C1/023Y02P10/25B22D11/116
Inventor 谭毅庄辛鹏赵龙海
Owner DALIAN UNIV OF TECH
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