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Method for ultrasonic-assisted plasma beam fusion-covering of high-entropy alloy coating

A technology of plasma beam and high-entropy alloy, which is applied in the coating process and coating of metal materials, can solve the problems of poor wear resistance of low-carbon steel surface coatings, achieve high toughness, good corrosion resistance, and slow diffusion speed Effect

Active Publication Date: 2018-11-30
江苏菲尔德自动化仪表有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the shortcoming of poor wear resistance of the low carbon steel surface coating, and aims to improve the wear resistance and corrosion resistance of the low carbon steel surface. The manufacturing method adopted includes the following process steps:

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Step 1. Select the surface of the Q235 part to be strengthened as the substrate, and pretreat the surface, that is, use a grinding wheel or sandpaper to polish the surface to remove rust, and use alcohol or acetone to remove the oil on the surface;

[0015] Step 2, the nickel chromium borosilicate powder, copper powder, low carbon ferrochrome powder and high carbon ferromanganese powder are ball milled and mixed in a certain proportion with a ball mill to form a mixed powder; wherein the mass percentage of the nickel chromium borosilicate powder composition is Cr: 14-17, B: 2.5-4.5, Si: 3-4.5, C: 0.6-1.0, the rest is Ni, the particle size is 30-300μm; the purity of copper powder is 99.5-100%, the particle size is 30-300μm; low carbon The mass percentage of ferrochrome powder is C: 0.1-0.2%, Cr: 50-70%, the rest is Fe, and the particle size is 30-300μm; the mass percentage of high-carbon ferromanganese powder is Mn: 62-85; C: 7.0 -8.0; Si: 1.5-2.5, the rest is iron, the ...

Embodiment 2

[0020] Step 1. Select the surface of the low-carbon steel Q195 part to be strengthened as the substrate, and pretreat the surface, that is, use a grinding wheel or sandpaper to polish the surface for rust removal, and use alcohol or acetone to remove the oil on the surface;

[0021] Step 2, the nickel chromium borosilicate powder, copper powder, low carbon ferrochrome powder and high carbon ferromanganese powder are ball milled and mixed in a certain proportion with a ball mill to form a mixed powder; wherein the mass percentage of the nickel chromium borosilicate powder composition is Cr: 14-17, B: 2.5-4.5, Si: 3-4.5, C: 0.6-1.0, the rest is Ni, the particle size is 30-300μm; the purity of copper powder is 99.5-100%, the particle size is 30-300μm; low carbon The mass percentage of ferrochrome powder is C: 0.1-0.2%, Cr: 50-70%, the rest is Fe, and the particle size is 30-300μm; the mass percentage of high-carbon ferromanganese powder is Mn: 62-85; C: 7.0 -8.0; Si: 1.5-2.5, the...

Embodiment 3

[0026] Step 1. Select the surface of the low-carbon steel Q275 part to be strengthened as the substrate, and pretreat the surface, that is, use a grinding wheel or sandpaper to polish the surface for derusting, and use alcohol or acetone to remove the oil on the surface;

[0027] Step 2, the nickel chromium borosilicate powder, copper powder, low carbon ferrochrome powder and high carbon ferromanganese powder are ball milled and mixed in a certain proportion with a ball mill to form a mixed powder; wherein the mass percentage of the nickel chromium borosilicate powder composition is Cr: 14-17, B: 2.5-4.5, Si: 3-4.5, C: 0.6-1.0, the rest is Ni, the particle size is 30-300μm; the purity of copper powder is 99.5-100%, the particle size is 30-300μm; low carbon The mass percentage of ferrochrome powder is C: 0.1-0.2%, Cr: 50-70%, the rest is Fe, and the particle size is 30-300μm; the mass percentage of high-carbon ferromanganese powder is Mn: 62-85; C: 7.0 -8.0; Si: 1.5-2.5, the re...

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Abstract

The invention discloses a method for ultrasonic-assisted plasma beam fusion-covering of a high-entropy alloy coating. The method comprises the step of adopting a plasma beam for heating and fusion-covering the mixed powder composed of nickel-chromium boron silicon powder, copper powder, low-carbon ferrochromium powder and high-carbon manganese iron powder at a certain ratio on a low-carbon steel surface under argon gas shielding. The main components are composed of more than five elements, so that a high-entropy alloy primarily under solid solution state can be formed and has a hysteresis effect of high-entropy alloy during a fusion-covering process; majority of powder is pre-alloy powder and has a lower melting point; the hysteresis effect is beneficial to the forming of fine Cr7C3 and fine grains and the obtaining of the high-entropy alloy coating with high abrasive resistance.

Description

technical field [0001] The invention belongs to the field of high-energy beam surface treatment, in particular to a method for preparing a high-entropy alloy wear-resistant composite coating by plasma cladding. Background technique [0002] In engineering machinery, aerospace, automobile, geological exploration and other industries, a large number of parts are under the conditions of wear and corrosion. In order to improve their wear resistance and corrosion resistance, surface modification or coating methods are usually used. Among them, Fe-Cr-B-Si, Ni-Cr-B-Si, Co-Cr-B-Si, etc. are commonly used thermal spraying or cladding alloy materials, and the reinforcing phase is (Cr, Fe) 7 C 3 , its wear resistance, processability, etc. are good, and a large amount of Cr in solid solution makes the coating have good corrosion resistance. High-entropy alloys are alloys composed of more than five elemental components and alloyed in close to equiatomic ratios. They have excellent mech...

Claims

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Application Information

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IPC IPC(8): C23C24/10
CPCC23C24/103
Inventor 卢金斌马振武冯杰殷振吴永忠朱其新汪帮富蒋全胜刘威张旺玺
Owner 江苏菲尔德自动化仪表有限公司