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High-performance cobalt-based high-temperature alloy brush wire material

A high-temperature alloy, high-performance technology, applied in the field of material processing, can solve the problems of deteriorated formability, poor high temperature corrosion resistance, low high temperature strength, etc., and achieve the effect of improving processing formability, excellent high temperature performance and good high temperature performance.

Active Publication Date: 2017-05-10
江苏鑫信润科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The cobalt-based superalloy GH5605 is one of the high-temperature alloys for brush seals. The main problems at present are low high-temperature strength and poor high-temperature corrosion resistance. Therefore, how to improve the high-temperature strength of the high-temperature alloy without deteriorating its formability and improve high-temperature Corrosion resistance is an urgent problem to be solved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A high-performance cobalt-based superalloy brush wire material, the composition and mass percentage of the brush wire alloy are: C 0.08%, Al 1.2%, Ti 1.5%, B 0.005%, W 12%, Cr 10%, Ni 22 %, Co is the allowance, and the size is Φ0.2mm.

[0031] The preparation method steps of the above-mentioned high-performance cobalt-based superalloy brush wire material are as follows:

[0032] 1) Weigh Ni ingots, Cr ingots, Co ingots, Ni80Al20 (wherein the mass fraction of Ni is 80%, and the mass fraction of Al is 20%), Ni50Ti50 (wherein the mass fraction of Ni is 50%, and the mass fraction of Ti is 20%) by weight fraction. The mass fraction is 50%) ingots are put into a 50kg vacuum induction furnace for smelting, the melting temperature is 1750~1850℃, and refining is 35min; Secondary refining for 20 minutes to remove harmful impurities, reduce gas content and non-metallic inclusions, and cast alloy electrode rods under vacuum. Metallurgical defects such as inclusions and element se...

Embodiment 2

[0040] A high-performance cobalt-based superalloy brush wire material, the composition and mass percentage of the brush wire alloy are: C 0.05%, Al 1%, Ti 1.5%, B 0.008%, W 14%, Cr 10%, Ni 23 %, Co is the allowance, and the size is Φ0.2mm.

[0041] The preparation method steps of the above-mentioned high-performance cobalt-based superalloy brush wire material are as follows:

[0042] 1) Weigh Ni ingots, Cr ingots, Co ingots, and Ni50Ti50 (wherein, the mass fraction of Ni is 50%, and the mass fraction of Ti is 50%) ingots in proportion, put them into a 50kg vacuum induction furnace for smelting, and the smelting temperature is 1750 ~1850℃, refining for 30min; then fill with 12kPa argon, add a small amount of C and B, stir and melt, at 1550~1650℃, refine for 25min for the second time, remove harmful impurities, reduce gas content and non-metallic inclusions, and statically under vacuum Placed and cast into alloy rods; the surface of the electrode rods is sanded or turned and pe...

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Abstract

The invention discloses a high-performance cobalt-based high-temperature alloy brush wire material. The high-performance cobalt-based high-temperature alloy brush wire material is characterized in that the brush wire material comprises, by mass percent, 0.02%-0.1% of C, 1%-1.5% of Al, 0.5%-2% of Ti, 0.003%-0.01% of B, 10%-14% of W, 9%-11% of Cr, 17%-25% of Ni and the balance Co and inevitable impurities. The material has high-temperature-resistance wear resistance, high-temperature-resistance corrosion resistance and oxidization resistance, in addition, high strength is achieved, in other words, a proper alloy component ratio, a corresponding processing and preparing technology and a corresponding heat treatment technology are selected, and due to the fact that alloy strengthening elements are properly added and the processing and preparing technology is improved, the alloy performance is greatly strengthened, the tissue evenness is improved, grains are refined, defects are lowered, impurities are reduced, and the yield of alloys is increased. Meanwhile, the comprehensive performance of the alloys should be improved as much as possible on the premise that plasticity of the alloys is not changed.

Description

technical field [0001] The invention relates to a high-performance cobalt-based superalloy brush wire material, which is specifically used for manufacturing brush wire materials with high temperature wear resistance, high temperature corrosion resistance, oxidation resistance and high strength, and belongs to the technical field of material processing. Background technique [0002] The brush seal is an air sealing device used for the key parts of turbomachinery such as engine, steam turbine and steam engine. It is mainly composed of a brush ring and its corresponding matching runway. Among them, the brush ring is mainly composed of the front plate, the back plate and the dense brush wire with a diameter of about 0.06~0.3mm sandwiched between them. It is the best alternative structure for the air system grate seal. The brush wire is the brush wire The most important part of the material in the type sealing device, the brush wire is required to have good wear resistance, cor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/07C22C30/00C22F1/10
CPCC22C19/07C22C30/00C22F1/10
Inventor 周亮
Owner 江苏鑫信润科技股份有限公司
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