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Iron-based high-damping alloy with high thermal conductivity and preparation method thereof

A high-damping alloy, iron-based technology, applied in the field of alloys, can solve the problems of using temperature only to about 80 degrees, low density, low damping coefficient, etc., to achieve low production cost, improved high temperature resistance, and simple processing methods. Effect

Active Publication Date: 2017-05-31
NINGBO SYRNMA METAL MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In comparison, manganese-based damping alloys have the highest damping coefficient, which can reach 42%, but the operating temperature can only reach about 80 degrees.
The damping coefficient of aluminum-based high-damping alloy is relatively low, and the performance is about 10 times that of ordinary aluminum alloy, but the density is low (3 )

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] An iron-based high-damping alloy, in terms of weight percentage, the chemical composition of the alloy is: Cr: 6.5%, Si: 1.2%, Al: 4.6%, Hf: 1.8%, Cu: 5.6%, B: 1.4%, Sn : 2.9%, Co: 2.1%, the balance is Fe. The preparation method of the alloy: add the raw materials in the above proportion into a vacuum induction electric furnace and use an alumina crucible, induction heating to 1700°C to form an alloy solution, and use electromagnetic stirring to fully stir for 10 minutes and then keep the temperature for 10 minutes. The alloy liquid is poured into a water-cooled iron mold at 1700°C to form a casting. Take out the casting after it is completely solidified. The subsequent heat treatment process is: vacuum solution treatment at 1100°C, furnace cooling after 10 hours. Forged rods of required diameter in the range of 850-950 degrees. Then, vacuum annealing was performed at 1100°C for 2 hours. The mechanical properties, damping properties and heat transfer properties of th...

Embodiment 2

[0015] An iron-based high damping alloy. The chemical composition of the alloy is calculated by weight percentage: Cr: 7.2%, Si: 1.9%, Al: 5.3%, Hf: 1.6%, Cu: 6.3%, B: 1.3%, Sn : 3.1%, Co: 2.6%, the balance is Fe. The preparation method of the alloy: add the raw materials in the above proportion into a vacuum induction electric furnace and use an alumina crucible, induction heating to 1750°C to form an alloy solution, and use electromagnetic stirring to fully stir for 10 minutes and then keep the temperature for 10 minutes. The alloy liquid is poured into a water-cooled iron mold at 1750°C to form a casting. Take out the casting after it is completely solidified. The subsequent heat treatment process is: vacuum solution treatment at 1100°C, furnace cooling after 10 hours. Forging in the range of 850-950℃ to form bars of required diameter. Then, vacuum annealing was performed at 1100°C for 2 hours. The mechanical properties, damping properties and heat transfer properties of...

Embodiment 3

[0017] A manganese-based high-damping alloy. The chemical composition of the alloy is calculated by weight percentage: Cr: 7.6%, Si: 1.3%, Al: 5.1%, Hf: 2.3%, Cu: 4.9%, B: 1.6%, Sn : 2.8%, Co: 2.6%, the balance is Fe. The preparation method of the alloy: add the raw materials in the above proportion into a vacuum induction electric furnace and use an alumina crucible, induction heating to 1720°C to form an alloy solution, and use electromagnetic stirring to fully stir for 10 minutes and then keep it for 10 minutes. The alloy liquid is poured into a water-cooled iron mold at 1720°C to form a casting. Take out the casting after it is completely solidified. The subsequent heat treatment process is: vacuum solution treatment at 1100°C, furnace cooling after 10 hours. Forged rods of required diameter in the range of 850-950 degrees. Then, vacuum annealing was performed at 1100°C for 2 hours. The mechanical properties, damping properties and heat transfer properties of the obtain...

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Abstract

The invention discloses an iron-based high-damping alloy with high thermal conductivity and a preparation method thereof. The iron-based high-damping alloy comprises the following components in percentage by weight: 6-8% of Cr, 1-2% of Si, 4-6% of Al, 1.5-2.5% of Hf, 4-9% of Cu, 1-2% of B, 2.5-4.5% of Sn, 2-3% of Co and the balance of Fe. The iron-based high-damping alloy with high thermal conductivity has the mechanical property and damping capacity of the traditional iron-based high-damping alloy: the tensile strength is 540-550 MPa, the elasticity modulus is 80-85 GPa, the yield strength is 240-280 MPa, the elongation is 24-32%, and the SDC is 30-34%. On the basis of ensuring the damping capacity and mechanical property of the existing iron-based high-damping alloy for deformation, the thermal conductivity of the alloy is increased to 110-150 W / m.K from about 60-90 W / m.K and the alloy can be applied to occasions of higher temperature and vibration attenuation on a large scale.

Description

Technical field [0001] The invention relates to the technical field of alloys, in particular to a high-damping alloy. Background technique [0002] With the rapid development of modern industry, the number and types of various types of machinery are developing in the direction of high power and high speed. However, the problems of vibration and noise generated by machinery during operation have become more and more prominent, and have attracted widespread attention from industries such as machinery, transportation, energy, communications, and electricity. Vibration and noise can not only reduce the service life of equipment, but also cause noise pollution to the ecological environment and seriously damage the physical and mental health of the people. In the fields of transportation, energy, communication and power, controlling vibration and reducing noise have become engineering problems that need to be solved urgently. Controlling mechanical noise is not only an urgent task in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/32C22C38/30C22C38/20C22C38/34C22C38/06C22C33/04
CPCC22C33/04C22C38/002C22C38/008C22C38/06C22C38/20C22C38/30C22C38/32C22C38/34
Inventor 曹帅刘亚军郭强
Owner NINGBO SYRNMA METAL MATERIALS CO LTD
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