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Cored wire for preparing nickel-based high-aluminum coating and coating preparation method of cored wire

A powder core wire material, nickel-based technology, applied in the preparation of coating, powder core wire material and its coating, powder core wire material field, can solve the problem that Ti element is expensive, high manufacturing cost, and cannot be widely used To solve the problems of ground application and other issues, achieve the effect of high hardness, low cost and small thickness

Active Publication Date: 2016-06-15
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high price of Ti element and its Cr content as high as 40%, the wire cannot be widely used due to its high manufacturing cost.

Method used

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  • Cored wire for preparing nickel-based high-aluminum coating and coating preparation method of cored wire
  • Cored wire for preparing nickel-based high-aluminum coating and coating preparation method of cored wire
  • Cored wire for preparing nickel-based high-aluminum coating and coating preparation method of cored wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The mass percentage of powder core wire drug core composition is: Cr: 25%, Al: 4%, B: 3%, Si: 5%, Ni: balance. Rolled powder core wire, filling rate: 26%. Spraying parameters used for coating preparation: voltage 28-30V, current 160-180A, spraying distance 200mm, compressed air pressure 0.5-0.6MPa.

Embodiment 2

[0042]The mass percentage of powder core silk drug core composition is: Cr: 20%, Al: 7%, B: 5%, Si: 3%, Ni: balance. Rolled powder core wire, filling rate: 26%. Spraying parameters used for coating preparation: voltage 30-32V, current 160-180A, spraying distance 210mm, compressed air pressure 0.5-0.6MPa.

Embodiment 3

[0044] The mass percentage of powder core wire material is: Cr: 15%, Al: 9%, B: 4%, Si: 4%, Ni: balance. Rolled powder core wire, filling rate: 26%. Spraying parameters used for coating preparation: voltage 28-30V, current 180-200A, spraying distance 200mm, compressed air pressure 0.5-0.6MPa.

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Abstract

The invention provides a cored wire for preparing a nickel-based high-aluminum coating and a coating preparation method of the cored wire, and belongs to the field of thermal spraying in material processing engineering. The cored wire comprises the following components in percentages by mass: 13-25% of Cr, 4-10% of Al, 3-6% of B, 3-6% of Si, and the balance Ni and inevitable impurities. A strip for the skin of the cored wire is a Ni80-Cr20 strip. When the nickel-based high-aluminum coating with good high-temperature corrosion resistance is prepared by electric arc spraying, conditions of a spraying process are as follows: current is 160-200 A, voltage is 28-34 V, pressure of compressed air is 0.4-0.6 MPa, and spraying distance is 190-210 mm. By the cored wire and the coating preparation method, the nickel-based high-aluminum coating with high hardness and good high-temperature corrosion resistance can be obtained.

Description

technical field [0001] The invention belongs to the field of thermal spraying in material processing engineering, relates to a powder core wire material and a method for preparing a coating, in particular to a powder core wire material and a powder core wire material used for arc spraying to prepare high-temperature corrosion-resistant nickel-based high-alumina coatings and The preparation method of the coating can be used in the field of high-temperature corrosion protection of boiler four tubes in waste incinerators. Background technique [0002] Waste-to-Energy (WTE) waste incineration technology is the main development trend in the treatment of solid waste nowadays. However, whether it is a municipal waste incinerator, a biomass waste incinerator or a medical waste The high-temperature corrosion problems of corrosive parts such as water walls and water walls greatly limit the operating life of the incinerator, and its main forms are: molten salt corrosion and active oxid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/06C23C4/131C22C19/05
CPCC22C19/058C23C4/06
Inventor 贺定勇姬荣颖周正姚海华吴旭王一鸣王国红
Owner BEIJING UNIV OF TECH
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