Anti-multipacting nickel-based composite coating and coating method thereof

A composite coating, nickel-based technology, used in coatings, chemical instruments and methods, metal material coating processes, etc., can solve problems such as maintenance, production shutdown, economic losses, etc., to improve anti-collision ability, reduce production costs, reduce damage effect

Inactive Publication Date: 2014-01-22
SUZHOU CHIEN SHIUNG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In construction machinery, there are widely used components that work under multiple collision loads, such as various valves, pumps and other components. economic loss

Method used

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  • Anti-multipacting nickel-based composite coating and coating method thereof
  • Anti-multipacting nickel-based composite coating and coating method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In order to improve its multi-collision resistance performance, a gradually distributed coating is used on the 0Cr18Ni9 substrate. The weight percentages of Ni in the first, second, third and fourth subcoats are 10%, 22.227%, 37.304% and 44.454%. That is, the Ni content of the fourth layer on the surface of the exponential distribution gradient coating of the specimen is 44.454%, and the height of each layer is controlled to be about 1.5mm. The method of laser cladding is carried out. When the rectangular spot size is 10mm×1mm, the scanning speed V = 5mm / s, and the laser power is 3.5KW-4.5KW, the top surface of the sample is ground after cladding, and the cladding is repeated. Finally, the gradient coating sample was cut into 10mm×5mm×45mm multi-impact specimens. The coating is then subjected to a multi-touch test on a fatigue testing machine. The multi-touch experiment was carried out on the self-made multi-touch fatigue testing machine, the XTL-1 stereo microscope, ...

Embodiment 2

[0021] In order to improve its multi-collision resistance performance, a gradually distributed coating is used on the 0Cr18Ni9 substrate. The weight percentages of Ni in the first, second, third and fourth subcoats are 11%, 25.44%, 37.304% and 42.98%. Control the height of each layer to about 1.5mm. The method of laser cladding is carried out. When the rectangular spot size is 10mm×1mm, the scanning speed V = 5mm / s, and the laser power is 3.5KW-4.5KW, the top surface of the sample is ground after cladding, and the cladding is repeated. Finally, the gradient coating sample was cut into 10mm×5mm×45mm multi-impact specimens. The coating is then subjected to a multi-touch test on a fatigue testing machine. The multi-touch experiment was carried out on the self-made multi-touch fatigue testing machine, the XTL-1 stereo microscope, the JX68302-00 tool microscope were used to observe the microstructure of the sample, and the HXD-1000B digital microhardness tester was used to measur...

Embodiment 3

[0023] In order to improve its multi-collision resistance performance, a gradually distributed coating is used on the 0Cr18Ni9 substrate. The weight percentages of Ni in the first, second, third and fourth subcoats are 10%, 23.69%, 36.92% and 42.98%. Control the height of each layer to about 1.5mm. The method of laser cladding is carried out. When the rectangular spot size is 10mm×1mm, the scanning speed V = 5mm / s, and the laser power is 3.5KW-4.5KW, the top surface of the sample is ground after cladding, and the cladding is repeated. Finally, the gradient coating sample was cut into 10mm×5mm×45mm multi-impact specimens. The coating is then subjected to a multi-touch test on a fatigue testing machine. The multi-touch experiment was carried out on the self-made multi-touch fatigue testing machine, the XTL-1 stereo microscope, the JX68302-00 tool microscope were used to observe the microstructure of the sample, and the HXD-1000B digital microhardness tester was used to measure...

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Abstract

The invention discloses an anti-multipacting nickel-based composite coating and a coating method thereof. The weight fraction of an Ni element in the nickel-based composite coating is increased towards one side far away from a matrix along one side near the matrix in a gradient manner; the coating method of the nickel-based composite coating material mainly comprises the following steps: coating a first sub-coating on the matrix by adopting a laser cladding method; polishing the top surface after cladding, cladding a second sub-coating, and cladding a third sub-coating and a fourth sub-coating according to the method, wherein the weight content of the Ni elements from the first sub-coating to the fourth sub-coating is gradually increased to 44.45% from 10% in the gradient manner; the size of a laser spot is 10mm*1mm in a cladding process; the scanning speed is 4.5-5.5 mm/s; the laser power is 3.5-4.5 KW. By cladding the coating with Ni gradient on the matrix, the collision resistance capability can be improved. Thus, the damage to a work-piece is greatly reduced; the production cost is also reduced.

Description

technical field [0001] The invention relates to a coating material and a coating method, in particular to an anti-multi-touch nickel-based composite coating material and a coating method thereof. Background technique [0002] Nickel-based self-fluxing alloy powder is the most researched and widely used laser cladding material because of its good wettability, corrosion resistance, wear resistance, self-lubrication and moderate price. Great progress has been made in the preparation of nickel-based coatings by laser cladding technology. [0003] In construction machinery, there are widely used components that work under multiple collision loads, such as various valves, pumps and other components. economic loss. Most of the failures caused by multiple impact loads originate from the plastic deformation of materials. It is found through the exploration of the present invention that the laser cladding nickel-based composite coating is suitable for multi-collision loads. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/01C23C24/10
Inventor 荆瑞红
Owner SUZHOU CHIEN SHIUNG INST OF TECH
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