Nano coating process for metal surface

A nano-coating and metal surface technology, which is applied to the surface strengthening and repair of metal materials, worn and scrapped parts, key parts of mechanical equipment and areas prone to corrosion, can solve the problems of poor coating performance, inconvenient operation, and bonding strength. Insufficient and other problems, to achieve the effect of performance improvement, enhanced bonding force, and improved metal surface hardness

Inactive Publication Date: 2006-07-26
ZHEJIANG UNIV OF TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings of the existing nano-coating technology, such as insufficient bonding strength with the substrate, inconvenient operation under vacuum conditions, and low coating performance, and provide a coating with high bonding strength between the strengthening layer and the substrate, easy operation, and Nano-coating process for high-performance metal surfaces

Method used

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  • Nano coating process for metal surface
  • Nano coating process for metal surface
  • Nano coating process for metal surface

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Experimental program
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Effect test

Embodiment 1

[0031] Refer to attached figure 1 , the nano-coating process on the metal surface includes the following steps: (1) sample pretreatment: cleaning the metal sample treatment part; (2) nanoparticle preparation: using chemical vapor deposition to prepare nickel-coated nano-alumina, nano-alumina particles It is spherical, with a diameter of 50nm, and the diameter of the particle after the surface is coated with nickel is about 150nm. The mass fraction of alumina in nickel-coated alumina powder is 30%; pre-coating: add a certain amount of binder to the mixed powder, stir and mix well to make a paste, and apply it on the surface with a brush 2Cr with dimensions 100×50×30mm 13 Stainless steel specimen surface. The preset coating thickness is 1mm; (3), according to the coating area, the laser beam 1 corresponding to the spot is selected for cladding treatment, and the laser process parameters are selected: the laser beam of the rectangular spot (10×2mm) is selected according to the ...

Embodiment 2

[0033] Embodiment two, refer to figure 1 , the nano-coating process on the metal surface includes the following steps: (1) sample pretreatment: cleaning the metal sample treatment part 1; (2) nanoparticle preparation: using chemical vapor deposition to prepare cobalt-coated nano-carbon tungsten, nano-carbon tungsten The particles are spherical, with a diameter of 50nm, and the diameter of the particles after the surface is coated with cobalt is about 150nm. The mass fraction of carbon tungsten in the cobalt-coated tungsten carbide powder is 30%; pre-coating 2: add a certain amount of binder to the mixed powder, stir and mix well to make a paste, and apply it with a brush 2Cr in size 100×50×30mm 13 Stainless steel specimen surface. The preset coating thickness is 1mm; (3), according to the coating area, select the beam corresponding to the spot for laser cladding treatment, the selection of the laser process parameters: select the laser beam of the rectangular spot (10×2mm) a...

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Abstract

The invention discloses a nanometer covering craft of metal surface, which comprises the following steps: (1) cleaning metal surface; (2) covering nanometer powdered material on the surface; (3) selecting laser beam of flare according to covering surface to proceed smelting-covering treatment; carrying on keeping inactive gas simultaneously in the area of laser smelting-covering treatment; (4) cooling metal by radiation. The invention improves the property of key components and parts of mechanical equipment, which restores and re-uses perishable faulty element

Description

(1) Technical field [0001] The invention belongs to the field of mechanical engineering, and relates to the surface strengthening and repairing of metal materials, and is especially suitable for key parts of mechanical equipment with complex shapes and small failure sizes, and parts that are easy to corrode, wear and scrap, such as turbine blades, mold surfaces, Strengthening and repairing of cutting edges of various high-precision powerful cutting tools, etc. (2) Background technology [0002] The trillions of yuan of equipment accumulated in decades of construction in our country is undergoing or facing renovation and renewal. In particular, a large number of complete sets of equipment introduced since the 1970s are facing the problem of being scrapped. Every year, the equipment is shut down and scrapped due to corrosion and wear. Losses exceeded billions of dollars. Faced with the maintenance, performance improvement and scrap recycling of such a large number of equipmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10B05C1/06B22F9/16
Inventor 姚建华张群莉张伟
Owner ZHEJIANG UNIV OF TECH
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