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High-performance alloy wire brush used for brush seal, and preparation method thereof

A technology for brush seals and alloys, which is applied in the field of high-performance alloy brush wires for engine brush seals and its preparation, can solve problems affecting the service life of brush seals, low strength, and high wear rate, and achieve improved service life and reliability. High temperature wear resistance, controllable production process effect

Inactive Publication Date: 2013-06-19
GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitation of the composition of the alloy wire material, the brush wire is easy to wear and break during use, which affects the service life of the brush seal
[0004] However, with the continuous improvement of engine brush sealing technology, the requirements for the use temperature and high temperature resistance of alloy brush wires have been further increased. The general alloy brush wires used in use have found that the wear rate is high and the strength is low at high temperatures, which affects the engine brush. Seal life and reliability

Method used

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  • High-performance alloy wire brush used for brush seal, and preparation method thereof
  • High-performance alloy wire brush used for brush seal, and preparation method thereof
  • High-performance alloy wire brush used for brush seal, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A high-performance alloy brush wire for brush sealing, the composition and mass percentage of the brush wire are Cr 16%; Mo 2.5%; Co 8%; Fe 2.5%, Ti 0.5%; Al 0.5%; C 0.05%, Ni The margin, the size is Φ0.1mm.

[0024] The preparation method of the above-mentioned high-performance alloy brush wire for brush sealing, the method steps are as follows:

[0025] (1) Weigh Cr ingot 8kg, Mo50Fe50 (wherein, the mass percentage of Mo is 50%, the mass percentage of Fe is 50%) ingot 2.5kg, Co ingot 4kg, Ni50Ti50 (wherein, the mass percentage of Ni is 50%, Ti The mass percentage is 50%) ingot 0.5kg, Ni80Al20 (wherein, the mass percentage of Ni is 80%, the mass percentage of Al is 20%) ingot 1.25kg, graphite 0.025kg, Ni ingot 33.725kg, carry out in vacuum melting furnace Melting, the melting temperature is 1700°C, and cast into alloy steel ingots;

[0026] (2) Forging and rolling alloy steel ingots:

[0027] First, the alloy steel ingot is subjected to homogenization annealing trea...

Embodiment 2

[0032] A high-performance alloy brush wire for brush sealing, the composition and mass percentage of the brush wire are Cr 17%; Mo 2.7%; Co 9%; Fe 2.7%, Ti 0.3%; Al 0.7%; C 0.06%, Ni The margin, the size is Φ0.2mm.

[0033] The preparation method of the above-mentioned high-performance alloy brush wire for brush sealing, the method steps are as follows:

[0034] (1) Weigh 8.5kg of Cr ingots, 2.7kg of Mo50Fe50 ingots, 4.5kg of Co ingots, 0.3kg of Ni50Ti50 ingots, 1.75kg of Ni80Al20 ingots, 0.03kg of graphite, and 32.22kg of Ni ingots, and melt them in a vacuum melting furnace at a melting temperature of 1680℃, cast into alloy steel ingot;

[0035] (2) Forging and rolling alloy steel ingots:

[0036] First, the alloy steel ingot is subjected to homogenization annealing treatment, the homogenization annealing temperature is 1150°C, and the time is 38h. Then the alloy steel ingot is forged, and the forging temperature is 980°C. Rolling is carried out again, the rolling tempera...

Embodiment 3

[0041] A high-performance alloy brush wire for brush sealing, the composition and mass percentage of the brush wire are Cr 18.5%; Mo 2.8%; Co 8.5%; Fe 2.8%, Ti 0.8%; Al 1.0%; C 0.08%, Ni The margin, the size is Φ0.25mm.

[0042] The preparation method of the above-mentioned high-performance alloy brush wire for brush sealing, the method steps are as follows:

[0043](1) Weigh 9.25kg of Cr ingots, 2.8kg of Mo50Fe50 ingots, 4.25kg of Co ingots, 0.8kg of Ni50Ti50 ingots, 2.5kg of Ni80Al20 ingots, 0.04kg of graphite, and 30.36kg of Ni ingots, and melt them in a vacuum melting furnace at a melting temperature of 1750℃, cast into alloy steel ingot;

[0044] (2) Forging and rolling alloy steel ingots:

[0045] First, the alloy steel ingot is subjected to homogenization annealing treatment, the homogenization annealing temperature is 1200° C., and the time is 30 h. Then the alloy steel ingot is forged, and the forging temperature is 1000°C. Rolling is carried out again, and the ro...

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Abstract

The invention discloses a high-performance alloy wire brush used for a brush seal of an engine, and a preparation method thereof, and belongs to the material processing field. The components of the alloy brush comprise 16-20% of Cr, 2.5-3% of Mo, 8-10% of Co, 1-3% of Fe, 0.2-1% of Ti, 0.4-1.5% of Al, 0.05-0 .1% of C, and the balance being Ni. The preparation method of the alloy brush comprises the steps of mixing the raw materials according to a mass percentage, vacuum melting, wherein low density metals such as Ti, Al and the like are added in forms of intermediate alloys of NiTi and NiAl, Mo is added in a form of MoFe; then rolling into alloy rods by forging; multi-pass drawing annealing, and making into alloy wires with diameter of 0.08-0.4 mm.. The alloy wire brush has relatively good anti-high temperature wear resistance, anti-high temperature corrosion resistance, oxidation resistance and relatively high strength. As a wire brush material for the brush seal of the engine, the service life and reliability of the brush seal of the engine can be effectively increased.

Description

technical field [0001] The invention belongs to the technical field of material processing, and relates to a high-performance alloy brush wire for engine brush sealing and a preparation method thereof. Background technique [0002] The brush seal is an air sealing device used in the key parts of the engine. It is mainly a ring-shaped component welded by metal wires with a diameter of about 0.08mm to 0.3mm, the front plate and the back plate. It is the best seal for the grate teeth of the air system. The alternative structure of the brush filament is the most important material of the brush sealing device, and the brush filament is required to have good wear resistance, corrosion resistance and high strength during use. [0003] Brush seals can increase engine thrust and reduce fuel consumption, so this technology has attracted widespread attention at home and abroad. Foreign countries have carried out systematic research work on advanced alloy wire materials for brush seali...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/05C22C1/03C22F1/10
Inventor 徐景杰杨中元汪礼敏张景怀马飞董小江穆艳茹
Owner GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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