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Metal ceramic laser cladding powder resistant to zinc liquid corrosion

A technology of corroding metal and laser cladding, applied in the coating process and coating of metal materials, can solve the problems of difficult preparation, low hardness, high cost, etc., achieve high energy density, low heat input, and improve zinc resistance. The effect of liquid corrosion

Active Publication Date: 2015-12-23
JIANGSU ZHAOLONG ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But there are also defects of low hardness, high cost and difficult preparation

Method used

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  • Metal ceramic laser cladding powder resistant to zinc liquid corrosion
  • Metal ceramic laser cladding powder resistant to zinc liquid corrosion
  • Metal ceramic laser cladding powder resistant to zinc liquid corrosion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] see figure 1 , figure 2 , image 3 and Figure 4 , a cermet laser cladding powder resistant to zinc liquid corrosion, including Al 2 o 3 powder, Ti powder, Mo powder and B powder, the weight percentage is 60% Al 2 o 3 powder, 30%Ti powder, 6%Mo powder and 4%B powder, the Al 2 o 3 The particle size of the powder is 20 microns, the particle size of the Ti powder, Mo powder and B powder is 15 microns, and the Al 2 o 3 The purity of powder, titanium powder, molybdenum powder and boron powder is >99.9%. The laser cladding process is as follows: A) The surface of the austenitic stainless steel substrate 304 to be laser clad is polished with 240# corundum sandpaper, the purpose is to roughen the surface of the austenitic stainless steel substrate 304 to facilitate the powder and Inlaying and packing of stainless steel substrates, and cleaning with absolute ethanol to remove various impurities and oil stains on the surface to be clad, so as to facilitate the wetting ...

Embodiment 2

[0026] A kind of molten zinc corrosion-resistant cermet laser cladding powder, including Al2O3 powder, Ti powder, Mo powder and B powder, the weight percentage is 70% Al 2 o 3 powder, 20%Ti powder, 9%Mo powder and 1%B powder, the Al 2 o 3 The particle size of the powder is 2 o 3 The purity of powder, titanium powder, molybdenum powder or boron powder is >97.9%. The laser cladding process is as follows: A) Sandblasting the surface of the austenitic stainless steel substrate 304 to be laser clad, the purpose is to roughen the surface of the austenitic stainless steel substrate 304, so as to facilitate the powder and stainless steel substrate Inlaid, stuffed, and cleaned with absolute ethanol to remove various impurities and oils on the surface to be clad, so as to facilitate the wetting and metallurgical bonding of the powder and the surface of the substrate; B) Al 2 o 3Powder, Ti powder, Mo powder, and B powder are mixed according to weight percentage, and ground until the...

Embodiment 3

[0032] A kind of molten zinc corrosion-resistant cermet laser cladding powder, including Al 2 o 3 powder, Ti powder, Mo powder and B powder, the weight percentage is 65% Al 2 o 3 powder, 27%Ti powder, 6%Mo powder and 2%B powder, the Al 2 o 3 The particle size of the powder is 2 o 3 The purity of powder, titanium powder, molybdenum powder or boron powder is >99.9%. The laser cladding process is as follows: A) The surface of the austenitic stainless steel substrate 304 to be laser clad is polished with 240# corundum sandpaper, the purpose is to roughen the surface of the austenitic stainless steel substrate 304 to facilitate the powder and Inlaying and packing of stainless steel substrates, and cleaning with absolute ethanol to remove various impurities and oil stains on the surface to be clad, so as to facilitate the wetting and metallurgical bonding of the powder and the surface of the substrate; B) Al 2 o 3 Powder, Ti powder, Mo powder, and B powder are mixed according...

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Abstract

The invention discloses cermet laser clad powder resistant to molten zinc corrosion. The cermet laser clad powder comprises, by weight, 60-70% of Al2O3 powder, 20-30% of Ti powder, 3-10% of Mo powder and 1-4% of B powder. A corrosion-resistant cermet coating made of the powder in a laser clad mode is well combined with an austenite stainless steel base material, high in hardness and molten zinc corrosion resistance, free of defects such as cracks, air holes and inclusions and free of environmental pollution, and therefore the cermet laser clad powder has important innovation value and engineering application significance due to the corrosion-resistant function in molten zinc.

Description

Technical field: [0001] The invention relates to laser surface cladding technology, in particular to a laser cladding cermet material with zinc liquid corrosion resistance. Background technique: [0002] In recent years, metal corrosion has brought huge losses to the national economy. The demand for galvanized products is on the rise year by year. With the continuous increase in the demand and output of galvanized steel profiles and other profiles, the galvanized tank, zinc and zinc alloy solution The loss of materials used in containers, liquid zinc pipelines, and temperature measurement protection sleeves is increasing. It is of great engineering application value to carry out research on materials resistant to zinc liquid corrosion and improve their corrosion resistance. In view of the problems of high brittleness, high cost and difficulty in preparation of commonly used overall materials such as metal zinc liquid, zinc liquid conveying pipelines, and thermocouple tempera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10C22C29/12
Inventor 何兆龙
Owner JIANGSU ZHAOLONG ELECTRIC
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