Preparation and application of rare earth-containing nickel-based powder core wire material and coating

A powder core wire material and rare earth technology, which is applied in the direction of metal material coating process, coating, molten spraying, etc., can solve the problems of large impact and impact, and achieve improved heat utilization rate, extended service life, and good thermal conductivity Effect

Active Publication Date: 2014-07-16
唐山宝航机械制造有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, surfacing and ceramic patches have an impact on heat transfer, especially in the future to increase steam temperature and pressure, and these two methods will have an increasing impact

Method used

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  • Preparation and application of rare earth-containing nickel-based powder core wire material and coating

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Experimental program
Comparison scheme
Effect test

Embodiment 2

[0024] Pure metal chromium powder 26%, nickel boron powder 28%, erbium 0.1%, nickel is the balance. The filling rate is 32%, and the rolled powder core wire. Spraying parameters used for coating preparation: voltage 28-30V, current 160-180A, spraying distance 200mm, compressed air pressure 0.5-0.6MPa.

Embodiment 3

[0026] Pure metal chromium powder 26%, nickel boron powder 28%, erbium 0.15%, nickel is the balance. The filling rate is 32%, and the rolled powder core wire. Spraying parameters used for coating preparation: voltage 28-30V, current 160-180A, spraying distance 200mm, compressed air pressure 0.5-0.6MPa.

Embodiment 4

[0028] Pure metal chromium powder 26%, nickel boron powder 28%, erbium 0.2%, nickel is the balance. The filling rate is 32%, and the rolled powder core wire. Spraying parameters used for coating preparation: voltage 28-30V, current 160-180A, spraying distance 200mm, compressed air pressure 0.5-0.6MPa.

[0029] The thermal conductivity of table 1 embodiment 2-4 coating

[0030] Example

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Abstract

The invention discloses preparation and application of a rare earth-containing nickel-based powder core wire material and a coating, belonging to the field of thermal spraying in the material machining engineering. A core the following components in percentage by mass: 20-35% of pure metal chromium powder, 10-31% of nickel boron powder, 0.1-0.3% of rare earth and the balance of nickel, wherein the outer skin of the powder core wire material is made of a 80Ni-20Cr strip; the filling rate of the powder core wire material is 32%; when the rare earth-containing nickel-based coating is prepared in an electric arc spraying mode, a substrate needs to be pretreated; the spraying parameters are as follows: the voltage is 28-34V, the current is 160-220A, the spraying distance is 190-210mm, and the pressure of compressed air is 0.5-0.6MPa. A coating which is good in thermal conversion property and corrosion resistance can be obtained, and the service stability of a water-cooling wall tube and a superheater tube in a waste resource WTE (Waste To Energy) garbage incinerator is improved.

Description

technical field [0001] The invention belongs to the field of thermal spraying in material processing engineering, and relates to a preparation method and application of a powder core wire material and a coating. The invention is mainly used in industrial fields requiring heat-resistant corrosion and better thermal conductivity. Background technique [0002] With the large amount of garbage generated and the requirements for environmental protection getting higher and higher, the recycling of waste [0003] (Waste-to-Energy, WTE) waste incineration technology has become the main development trend of dealing with solid waste nowadays. [0004] The main corrosion forms of corrosive parts such as superheater and water wall in WTE waste incinerator are: molten salt corrosion and active oxidation. When the temperature reaches above 450°C, the oxidation of metal chloride and HCl will produce highly active Cl2, which can easily diffuse into the oxide film on the surface and react w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/06C23C4/12B22F1/00C22C19/05C23C4/131
Inventor 周正贺定勇王旭王曾洁蒋建敏王智慧王国红赵秋颖
Owner 唐山宝航机械制造有限公司
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