Method for laser cladding of metal ceramic powder on surface of austenitic stainless steel

An austenitic stainless steel, laser cladding technology, applied in the direction of metal material coating process, coating, etc., can solve the problems of low hardness, high cost, difficult preparation, etc., to achieve low production cost, good bonding, no environment The effect of pollution

Active Publication Date: 2014-07-23
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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  • Method for laser cladding of metal ceramic powder on surface of austenitic stainless steel
  • Method for laser cladding of metal ceramic powder on surface of austenitic stainless steel
  • Method for laser cladding of metal ceramic powder on surface of austenitic stainless steel

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Embodiment 1

[0024] see figure 1 , figure 2 , image 3 with Figure 4 , a method for laser cladding cermet powder on the surface of austenitic stainless steel, comprising the following steps: A) grinding the surface of the austenitic stainless steel substrate 304 to be laser clad with 240# corundum sandpaper, the purpose is to rough The surface of the austenitic stainless steel substrate 304 is beneficial to the inlay and filling of the powder and the stainless steel substrate, and it is cleaned with absolute ethanol to remove various impurities and oil on the cladding surface, so as to facilitate the wetting of the powder and the surface of the substrate Combined with metallurgy; B) Mix 60% Al2O3, 30%Ti, 6%Mo, 4%B, in which the purity of alumina powder is higher than 99.9%, the particle size is less than 20 microns, and the purity of titanium powder, molybdenum powder and boron powder are all high At 99.9%, the particle size is less than 15 microns, and ground until the particle size ...

Embodiment 2

[0030] A method for laser cladding cermet powder on the surface of austenitic stainless steel, comprising the following steps: A) performing sandblasting on the surface of the austenitic stainless steel substrate 304 to be laser clad, in order to coarsen the austenite The surface of the stainless steel base material 304 is beneficial to the inlay and filling of powder and stainless steel base material, and cleaned 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 base material; B) Al 2 o 3Powder, Ti powder, Mo powder, and B powder are mixed with 70% Al2O3, 20% Ti, 9% Mo, and 1% B according to weight percentage, wherein the purity of alumina powder is higher than 99.9%, and the particle size is less than 20 microns. Titanium powder, The purity of molybdenum powder and boron powder is higher than 99.9%, the particle size is less than 15 micro...

Embodiment 3

[0036] A method for laser cladding cermet powder on the surface of austenitic stainless steel, comprising the following steps: A) performing sandblasting on the surface of the austenitic stainless steel substrate 304 to be laser clad, in order to coarsen the austenite The surface of the stainless steel base material 304 is beneficial to the inlay and filling of powder and stainless steel base material, and cleaned 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 base material; B) Al 2 o 3 Powder, Ti powder, Mo powder, and B powder are mixed with 65% Al2O3, 27% Ti, 6% Mo, and 2% B according to weight percentage, wherein the purity of alumina powder is higher than 99.9%, and the particle size is less than 20 microns. Titanium powder, The purity of molybdenum powder and boron powder is higher than 99.9%, the particle size is less than 15 micr...

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Abstract

The invention discloses a method for laser cladding of metal ceramic powder on the surface of austenitic stainless steel: A) carrying out oil removal and texturing treatment on the surface of an austenitic stainless steel base material to be cladded; B) mixing and grinding Al2O3 powder, Ti powder, Mo powder and B powder in accordance with weight percentage; C) coating the mixed powder after grinding on the surface of the austenitic stainless steel base material; and D) performing laser cladding on a surface coating layer of the austenitic stainless steel base material. The corrosion-resistant metal ceramic layer subjected to treatment by the method is highly combined with the austenitic stainless steel base material and has the advantageous of high liquid zinc corrosion resistance, high hardness, no environmental pollution and no generation of defects such as crack, air bubble and inclusion.

Description

Technical field: [0001] The invention relates to laser surface cladding technology, in particular to a method for laser cladding cermet powder on the surface of austenitic stainless steel. 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 ther...

Claims

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Application Information

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