High-performance cobalt-based superalloy brush wire material

A high-temperature alloy, high-performance technology, used in high-performance cobalt-based superalloy brush wire material, oxidation resistance and high-strength brush wire material, high temperature corrosion resistance, manufacturing high temperature wear resistance field, can solve high temperature Problems such as poor corrosion resistance, low high temperature strength, and deterioration of forming performance, to achieve the effect of excellent high temperature performance, good high temperature performance, and improved processing and forming performance

Active Publication Date: 2018-07-06
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 filament material, the composition and mass percentage of the brush filament alloy are: C0.08%, Al 1.2%, Ti 1.5%, B 0.005%, W 12%, Cr 10%, Ni 22%, Co is the balance, and the size is Φ0.2mm.

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

[0032] 1) Weigh Ni ingot, Cr ingot, Co ingot, Ni80Al20 (the mass fraction of Ni is 80%, the mass fraction of Al is 20%), Ni50Ti50 (the mass fraction of Ni is 50%, Ti The mass fraction is 50%) ingots were put into a 50kg vacuum induction furnace for melting, the melting temperature was 1750~1850°C, and refined for 35min; Secondary refining for 20 minutes to remove harmful impurities, reduce gas content and non-metallic inclusions, and cast alloy electrode rods statically under vacuum; sand the surface of the electrode rods or turn and peel them, and perform electroslag remelting to reduce al...

Embodiment 2

[0040] A high-performance cobalt-based superalloy brush filament material, the composition and mass percentage of the brush filament alloy are: C0.05%, Al 1%, Ti 1.5%, B 0.008%, W 14%, Cr 10%, Ni 23%, Co is the balance, and the size is Φ0.2mm.

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

[0042] 1) Weigh Ni ingots, Cr ingots, Co ingots, Ni50Ti50 (the mass fraction of Ni is 50%, and the mass fraction of Ti is 50%) in proportion and put them into a 50kg vacuum induction furnace for melting, and the melting temperature is 1750 Refining at ~1850°C for 30 minutes; then filling 12kPa argon, adding trace amounts of C and B to stir and melt, at 1550~1650°C, refining for 25 minutes for the second time to remove harmful impurities, reduce gas content and non-metallic inclusions, and statically Putting and casting into alloy rods; sanding or turning and peeling the electrode rods on the ...

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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 high-temperature alloy brush wire material, which is specifically used for manufacturing high-temperature wear-resistant, high-temperature corrosion-resistant, oxidation-resistant and high-strength brush wire materials, and belongs to the technical field of material processing. Background technique [0002] The brush seal is an air sealing device used in key parts of turbomachinery such as engines, steam turbines and steam engines. It is mainly composed of brush rings and corresponding matching runways. Among them, the brush ring is mainly composed of the front plate, the back plate and the dense brush wire clamped between the two with a diameter of about 0.06~0.3mm. It is the best alternative structure for the air system grate seal. The brush wire is the brush The most important material part of the type sealing device requires the brush filament to have good wear resistance, corrosion resistanc...

Claims

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Application Information

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Patent Type & Authority Patents(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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