Arc sprayed cored wire suitable for re-melting

A powder core wire, arc spraying technology, applied in the direction of fusion spraying, coating, metal material coating process, etc., to achieve good erosion resistance and wear resistance, improve the erosion performance, improve the wear resistance Effect

Active Publication Date: 2013-06-26
ACADEMY OF ARMORED FORCES ENG PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no relevant patents and literature reports on the arc spraying powder core wire material suitable for remelting with added self-fluxing agent components

Method used

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  • Arc sprayed cored wire suitable for re-melting
  • Arc sprayed cored wire suitable for re-melting
  • Arc sprayed cored wire suitable for re-melting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 0.3×10mm 08F low-carbon steel strip is used for the outer skin, and the filling rate of the powder core is 32-35%. Draw and reduce the diameter step by step through the wire drawing die, and finally make the diameter reach 2.0mm.

[0036]

[0037] First, the coating is prepared on the surface of the 45 steel substrate that has been roughened by sandblasting, using a robotic high-speed arc spraying system, spraying current: 160A; spraying voltage: 34V; compressed air pressure: 0.7MPa; spraying distance: 200mm, followed by tungsten Argon arc heat source remelts the coating prepared above. The remelting process is as follows: current: 90A; argon gas flow rate: 9L / min; welding torch moving speed: 3mm / s; distance between welding torch and coating surface: 3mm, pay attention to ensure coating penetration Adequately control the melting amount of the matrix to ensure a better shape of the remelted layer.

[0038] The sprayed layer and remelted layer prepared by the above proc...

Embodiment 2

[0051] The outer skin is 0.3×10mm 08F low-carbon steel strip, and the powder core filling rate is 32%. Draw and reduce the diameter step by step through the wire drawing die, and finally make the diameter reach 2.0mm.

[0052]

[0053] First, the coating is prepared on the surface of the 45 steel substrate that has been roughened by sandblasting, using a robotic high-speed arc spraying system, spraying current: 160A; spraying voltage: 34V; compressed air pressure: 0.7MPa; spraying distance: 200mm, followed by tungsten Argon arc heat source remelts the coating prepared above. The remelting process is as follows: current: 90A; argon gas flow rate: 9L / min; welding torch moving speed: 3mm / s; distance between welding torch and coating surface: 3mm, pay attention to ensure coating penetration Adequately control the melting amount of the matrix to ensure a better shape of the remelted layer.

[0054] The sprayed layer and remelted layer prepared by the above process have the foll...

Embodiment 3

[0057] The outer skin is 0.3×10mm 08F low-carbon steel strip, and the powder core filling rate is 35%. Draw and reduce the diameter step by step through the wire drawing die, and finally make the diameter reach 2.0mm.

[0058]

[0059] First, the coating is prepared on the surface of the 45 steel substrate that has been roughened by sandblasting, using a robotic high-speed arc spraying system, spraying current: 160A; spraying voltage: 34V; compressed air pressure: 0.7MPa; spraying distance: 200mm, followed by tungsten Argon arc heat source remelts the coating prepared above. The remelting process is as follows: current: 90A; argon gas flow rate: 9L / min; welding torch moving speed: 3mm / s; distance between welding torch and coating surface: 3mm, pay attention to ensure coating penetration Adequately control the melting amount of the matrix to ensure a better shape of the remelted layer.

[0060] The sprayed layer and remelted layer prepared by the above process have the foll...

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Abstract

The invention belongs to the field of hot spraying, and discloses an arc sprayed cored wire suitable for re-melting. The powder core comprises the components of, by mass, 6-15% of Ni, 5-13% of Cr, 4-8% of Al, 5% of B, 3% of Nb, and 1-3% of mixed rare earth nickel powder. The mixed rare earth nickel powder component is composed of, by mass, 60% of Ni and 40% of mixed RE. The mixed RE is composed of, by mass, 25-28% of La; 48-52% of Ce, 14-17% of Nb, and 4-6% of Pu. The balance of the powder core is Fe. An arc sprayed coating provided by the invention has an average Vickers hardness of 530HV0.1, an average bonding strength of 38MPa, an average porosity of 14.2%, and an oxide content of 8.72%. After a re-melting treatment upon the sprayed coating, an average Vickers hardness of the re-melted layer is improved to 770HV0.1, and the layer substantially forms metallurgical bonding with a substrate. After re-melting treatment, the wire material coating has good wear resistance, erosion resistance, and loading resistance. The cored wire provided by the invention can be used in surface treatments of parts with requirements on high impact resistance, large alternating load, and high bonding strength in the fields of engineering machinery, mining machinery, and automobile industry.

Description

technical field [0001] The invention relates to an electric arc spraying powder core wire material which can be used for remelting treatment, and belongs to the field of professional thermal spraying of material processing engineering. Electric arc spraying powder core wire material with self-fluxing agent added to prepare the coating. After remelting treatment, the remelted layer and the substrate are metallurgically bonded. It is mainly used for remanufacturing and repairing of construction machinery, high-impact parts and surface performance enhancement of new products. . Background technique [0002] As the country promotes the construction of major projects, the construction machinery, mining machinery, heavy-duty vehicle industry and other fields are booming, but the working conditions of construction machinery and mining machinery and equipment are relatively harsh. Work under conditions such as erosion of dust and hard particles; overload operation; poor lubrication...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/06C23C4/073C23C4/131
Inventor 魏世丞徐滨士田浩亮陈永雄梁秀兵童辉刘毅
Owner ACADEMY OF ARMORED FORCES ENG PLA
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