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Preparation and application of a nickel-based powder core wire material and coating

A powder core wire material and nickel-based technology, which is applied in the field of powder core wire material and coating preparation, can solve the problems of complex preparation of spraying raw material powder, unsuitability for large-scale on-site construction, complex spraying process equipment, etc., and achieve improvement Service stability, high hardness, good wear resistance

Active Publication Date: 2016-08-10
唐山宝航机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Plasma spraying, supersonic flame spraying and other spraying process equipment are complex and costly, not suitable for in-situ large-scale on-site construction, and the preparation of spraying raw material powder is complicated

Method used

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  • Preparation and application of a nickel-based powder core wire material and coating
  • Preparation and application of a nickel-based powder core wire material and coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] According to the mass percentage of powder core wire material: 25% of pure metal chromium powder, 2% of pure metal tungsten, 27% of nickel boron powder, and nickel as 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 190mm, compressed air pressure 0.5-0.6MPa.

Embodiment 2

[0028] According to the mass percentage of powder core wire material: 25% of pure metal chromium powder, 2% of pure metal tungsten, 27% of nickel boron powder, and nickel as 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

[0030] According to the mass percentage of powder core wire material: 25% of pure metal chromium powder, 2% of pure metal tungsten, 27% of nickel boron powder, and nickel as 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 210mm, compressed air pressure 0.5-0.6MPa.

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Abstract

The invention relates to a nickel-based powder core wire and preparation and application of a coating and belongs to the thermal spraying field of material processing engineering. The chemical core comprises the following components in percentage by weight: 20-35% of pure metal chromium powder, 1-4% of pure metal tungsten, 1-30% of nickel boron powder and the balance of nickel. The strip for the outer skin of the powder core wire is 80Ni-20Cr strip. The filling rate of the powder core wire is 32%. When a tungsten-nickel-containing coating is prepared by an electric arc spraying method, a base body is pre-treated first and the spraying process is carried out under following conditions: the voltage is 28-34V, the current is 160-220A, the spraying distance is 190-210mm and the pressure of the compressed air is 0.5-0.6MPa. According to the tungsten-containing corrosion-resistant coating obtained by the invention, the high-temperature corrosion resistance of the coating is increased, and the service stability of a water cooling wall pipe and an over-heater pipe in a waste resourceful 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 such as heat resistance and corrosion. Background technique [0002] With the large amount of waste generated and the requirements for environmental protection getting higher and higher, waste-to-energy (WTE) waste incineration technology has become the main development trend in the treatment of solid waste. [0003] 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 with Fe or other metal elements at the interface of the oxide film / meta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/06C23C4/131F23G5/48
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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