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Powder core wire for electric arc spraying and preparing method of powder core wire

A powder core wire, arc spraying technology, applied in coating, melt spraying, metal material coating technology and other directions, can solve the problem of low hardness and rigidity of Zn belt, unable to spray stably for a long time, soft and easy deformation of wire, etc. problems, to avoid grain coarsening, improve hardness and rigidity, and improve mechanical strength

Inactive Publication Date: 2018-01-09
常州市丰瑞电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention: for the traditional Zn-Al base alloy spraying powder core wire, the pure Zn strip is usually used as the outer skin, and the Al powder and other mixed powders are used as the filler, and the hardness and rigidity of the Zn strip are extremely low. , the wire material made is soft and easy to deform, thus affecting the reliable wire feeding during spraying, resulting in the problem that the spraying cannot be stabilized for a long time, and a powder core wire material for arc spraying and its preparation method are provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0022] In parts by weight, take 3 parts of B powder and 90 parts of Zn powder successively, and heat to melt under the protection of argon to obtain a molten Zn-B alloy, and then use argon as the atomization medium to melt the Zn-B After the alloy is sprayed through the nozzle, it is atomized, and after cooling to room temperature, Zn-B alloy powder is obtained. According to parts by weight, 40 parts of Mg powder, 30 parts of Al powder, and 3 parts of B powder are taken in turn under the protection of argon. After heating to melting, a molten Mg-Al alloy is obtained, and then using argon gas as an atomizing medium, the molten Mg-Al alloy is sprayed through a nozzle and then atomized, and cooled to room temperature to obtain a Mg-Al alloy powder, in parts by weight Count, take 8 parts of Al powder, 60 parts of Zn powder, 10 parts of Zn-B alloy powder, 0.8 parts of B 2 o 3 powder, after heating and melting, successively continuous casting, hot rolling, coiling, intermediate rol...

example 2

[0024]In parts by weight, take 3 parts of B powder and 90 parts of Zn powder successively, and heat to melt under the protection of argon to obtain a molten Zn-B alloy, and then use argon as the atomization medium to melt the Zn-B After the alloy is sprayed through the nozzle, it is atomized, and after cooling to room temperature, Zn-B alloy powder is obtained. According to parts by weight, 40 parts of Mg powder, 30 parts of Al powder, and 3 parts of B powder are taken in turn under the protection of argon. After heating to melting, a molten Mg-Al alloy is obtained, and then using argon gas as an atomizing medium, the molten Mg-Al alloy is sprayed through a nozzle and then atomized, and cooled to room temperature to obtain a Mg-Al alloy powder, in parts by weight Counting, taking 8 parts of Al powder, 60 parts of Zn powder, and 10 parts of Zn-B alloy powder in turn, after heating and melting, successively undergo continuous casting, hot rolling, coiling, intermediate rolling, a...

example 3

[0026] In parts by weight, take 40 parts of Mg powder, 30 parts of Al powder, and 3 parts of B powder in turn, and heat them to melt under the protection of argon to obtain a molten Mg-Al alloy, and then use argon as the atomization medium, Spray the molten Mg-Al alloy through a nozzle and atomize it, and wait to cool to room temperature to obtain Mg-Al alloy powder. In parts by weight, take 8 parts of Al powder, 70 parts of Zn powder, and 0.8 parts of B 2 o 3 powder, after heating and melting, successively continuous casting, hot rolling, coiling, intermediate rolling, and finishing rolling into strips with a thickness of 0.3mm, and then surface degreasing to obtain Zn-Al alloy strips, and the resulting Zn-Al The alloy strip is cut into a skin with a width of 15 mm, and then the skin is bent into a U-shaped groove along both sides by a roll, and the U-shaped groove is placed in a vacuum drying oven, and dried for 3 hours at a temperature of 80 ° C to obtain Dry the U-shaped ...

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PUM

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Abstract

The invention belongs to the technical field of alloy material preparing, and particularly relates to a powder core wire for electric arc spraying and a preparing method of the powder core wire. B powder and Zn powder serve as raw materials for preparing Zn-B alloy powder, Mg powder, Al powder and B powder serve as raw materials, Mg-Al alloy powder is prepared, and after the Al powder, the Zn powder, the Zn-B alloy powder and the B2O3 powder are heated and melted, a Zn-Al alloy belt is prepared through continuous casting, hot rolling, coiling and other procedures and is bent and dried, and then a dry U-shaped groove is prepared through drying; and then, the Zn powder, the Al powder, the Mg-Al alloy powder and the rare earth powder are mixed and dried to be added into the dry U-shaped groove, after the dry U-shaped groove is sealed, the wire is prepared through level-by-level drawing, and then the powder core wire for electric arc spraying is obtained. The obtained wire is high in hardness and good in mechanical performance, reliable wire feeding can be achieved during spraying, long-time stable spraying can be guaranteed, and the coating obtained after spraying has good mechanicalperformance, excellent corrosion resisting performance and high density.

Description

technical field [0001] The invention belongs to the technical field of alloy material preparation, and in particular relates to a powder core wire material for arc spraying and a preparation method thereof. Background technique [0002] Arc spraying technology is the most suitable for large-scale promotion of thermal spraying technology. Its principle is to use electric arc to heat the sprayed wire to a molten or semi-melted state, and then spray and deposit it on the surface of the pretreated substrate at a certain speed to form a coating. Floor. At present, there are two kinds of wire materials used in arc spraying: metal solid wire and powder-filled powder core wire. However, the principle of arc spraying determines that it can only be sprayed with conductive wire, so many high hardness, high Solid wires with wear resistance, poor ductility, and non-conductivity are difficult to apply to arc spraying. Therefore, arc spraying wires are usually powder core wires. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/06C23C4/131C22C18/04
Inventor 朱浩明许蘅潘宏梅
Owner 常州市丰瑞电子有限公司
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