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Method for preparing anti-corrosion coating by means of laser cladding technology

A technology of anti-corrosion coating and laser cladding, which is applied in the direction of coating, metal material coating process, etc., can solve the problems of poor corrosion resistance, achieve the effect of smooth cladding layer surface, improve corrosion resistance, and improve quality

Inactive Publication Date: 2018-11-16
HUNAN UNIV OF TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this method, Q960 steel is used as cladding matrix, Stellite 6 alloy powder is used as cladding material, laser cladding is carried out under the action of laser by coaxial powder feeding method, and the properties of cladding matrix and cladding materials are integrated, which not only effectively solves the problem of Q960 The problem of poor corrosion resistance of steel can also improve the quality of Stellite 6 cobalt-based alloy laser cladding coating, and the preparation process is simple, high in efficiency, and has no pollution to the environment

Method used

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  • Method for preparing anti-corrosion coating by means of laser cladding technology

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Embodiment 1

[0039] This embodiment provides a method for preparing an anti-corrosion coating using laser cladding technology, which specifically includes the following steps:

[0040] S1. Cladding substrate pretreatment: use Q960 steel as the cladding substrate, polish its surface with 600-grit sandpaper, and then use 95% ethanol solution to clean the oil and rust on the surface, and the cleaning time is 5 minutes;

[0041] S2. Drying the Stellite 6 alloy powder, the process parameters of the drying treatment are: the drying temperature is 80° C., the drying time is 30 minutes, and the particle size of the Stellite 6 alloy powder is 50 μm;

[0042] S3. Using STAUBLTX90 CNC laser combined with coaxial powder feeding method to clad Stellite 6 alloy powder on the surface of Q960 steel, and rapidly cool at room temperature to form a layer of alloy coating, which is a wear-resistant and corrosion-resistant composite coating;

[0043] Among them, the power of the laser is 450W, the selected spo...

Embodiment 2

[0045]This embodiment provides a method for preparing an anti-corrosion coating using laser cladding technology, referring to the preparation method of Embodiment 1, the difference from Embodiment 1 is that in step S3, the power of the laser is 500W.

Embodiment 3

[0047] This embodiment provides a method for preparing an anti-corrosion coating using laser cladding technology, referring to the preparation method of Embodiment 1, the difference from Embodiment 1 is that in step S3, the power of the laser is 550W.

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Abstract

The invention discloses a method for preparing an anti-corrosion coating by means of a laser cladding technology. The method specifically includes the following steps that 1, cladding matrix pre-treatment is conducted; 2, a cladding material is subjected to drying treatment; 3, a laser in combination with a coaxial powder feeding method is adopted to make the cladding material and a cladding matrix surface layer melt simultaneously, and a layer of alloy coating is formed, so that the anti-corrosion coating is obtained; the cladding matrix in step 1 is Q960 steel; the cladding material in step2 is Stellite 6 alloy powder. According to the method for preparing the anti-corrosion coating by means of the laser cladding technology, the Q960 steel with good wear resistance is used as the cladding matrix, the Stellite 6 alloy powder with high corrosion resistance is used as the cladding material, the coaxial powder feeding method is adopted for conducting laser cladding under the action of the laser, and by means of synergistic cooperation between the cladding matrix and the cladding material, not only is the corrosion resistance of the Q960 steel improved, but also the quality of the Stellite 6 alloy laser cladding coating can be improved.

Description

technical field [0001] The invention belongs to the technical field of laser additive manufacturing, and more specifically relates to a method for preparing an anti-corrosion coating by using laser cladding technology. Background technique [0002] Because Q960 high-strength steel plate has the advantages of high yield strength and tensile strength, good wear resistance and strong toughness, it is widely used in large ships, bridges, power station equipment, medium and high pressure boilers, high pressure vessels, rolling stock, lifting machinery , mining machinery and other large welded structural parts. However, due to its poor corrosion resistance, serious corrosion problems will occur during long-term use, and fatigue fractures are prone to occur under the action of exciting force, which requires frequent replacement of parts, resulting in large material loss and high cost. Therefore, it is very important to perform surface treatment on Q960 high-strength steel to impro...

Claims

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Application Information

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IPC IPC(8): C23C24/10C22C19/07
CPCC22C19/07C23C24/106
Inventor 阳建君汤伟张楠罗登程美涛蒋涵坤程畅栋刘丹范才河李芳芳吴艳辉孙斌欧玲覃喆华
Owner HUNAN UNIV OF TECH
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