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Method for heating and melt-cladding TiC reinforced high-entropy alloy coating through high-frequency induction

A technology of high-frequency induction heating and high-entropy alloys, which is applied in the coating process and coating of metal materials, can solve the problems of high melting point of simple metal powder, insufficient melting or melting, and uneven coating composition. Achieve the effects of low cost, reduced dilution, and slow diffusion

Active Publication Date: 2018-06-05
GUANGDONG HECHENG ENVIRONMENTAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The problem to be solved by the present invention is that in the cladding process of using elemental metal powders to prepare high-entropy alloy coatings, some elemental metal powders have a high melting point and are not easy to melt or melt insufficiently. lead to uneven coating composition

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A method for high-frequency induction heating cladding TiC reinforced high-entropy alloy coating, comprising the following process steps:

[0016] Step 1. Select Q235 steel as the substrate for cladding, pretreat its surface, polish the surface of the parts to be processed with a grinding wheel or sandpaper to remove rust, and use alcohol or acetone to remove oil stains on the surface of the parts;

[0017] Step 2: Ni-Cr-B-Si, Co-Cr-B-Si, Cu, Al, TiC are mixed according to a certain ratio to form a mixed powder, and the particle size of the powder used is 120-180 μm. Among them, the mass percentage of Ni-Cr-B-Si composition is Cr: 14~17, B: 2.5~4.5, Si: 3~4.5, C: 0.6~1.0, and the rest is Ni; Co-Cr-B-Si composition The mass percentage is Cr: 14~17, B: 2.5~4.5, Si: 3~4.5, C: 0.6~1.0, and the rest is Co; the purity of Cu and Al powder is higher than 99.5%; the purity of TiC powder is higher than 99% ; The mass percent of mixed powder Ni-Cr-B-Si, Co-Cr-B-Si, Cu, Al, TiC is...

Embodiment 2

[0022] A method for high-frequency induction heating cladding TiC reinforced high-entropy alloy coating, comprising the following process steps:

[0023] Step 1. Select Q195 as the substrate, pre-treat the surface of the part to be strengthened, use a grinding wheel or sandpaper to polish the surface of the part to be processed for derusting, and use alcohol or acetone to remove the oil on the surface of the part;

[0024] Step 2: Ni-Cr-B-Si, Co-Cr-B-Si, Cu, Al, TiC are mixed according to a certain ratio to form a mixed powder, and the particle size of the powder used is 160-240 μm. Among them, the mass percentage of Ni-Cr-B-Si composition is Cr: 14~17, B: 2.5~4.5, Si: 3~4.5, C: 0.6~1.0, and the rest is Ni; Co-Cr-B-Si composition The mass percentage is Cr: 14~17, B: 2.5~4.5, Si: 3~4.5, C: 0.6~1.0, and the rest is Co; the purity of Cu and Al powder is higher than 99.5%; the purity of TiC powder is higher than 99% ; The mass percent of mixed powder Ni-Cr-B-Si, Co-Cr-B-Si, Cu, A...

Embodiment 3

[0029] A method for high-frequency induction heating cladding TiC reinforced high-entropy alloy coating, comprising the following process steps:

[0030] Step 1. Select Q215 as the substrate, pre-treat the surface of the part to be strengthened, polish the surface of the part to be processed with a grinding wheel or sandpaper to remove rust, and use alcohol or acetone to remove the oil on the surface of the part;

[0031] Step 2, Ni-Cr-B-Si, Co-Cr-B-Si, Cu, Al, TiC are mixed according to a certain ratio to form a mixed powder, and the particle size of the powder used is 150-220 μm. Among them, the mass percentage of Ni-Cr-B-Si composition is Cr: 14~17, B: 2.5~4.5, Si: 3~4.5, C: 0.6~1.0, and the rest is Ni; Co-Cr-B-Si composition The mass percentage is Cr: 14~17, B: 2.5~4.5, Si: 3~4.5, C: 0.6~1.0, and the rest is Co; the purity of Cu and Al powder is higher than 99.5%; the purity of TiC powder is higher than 99% ; The mass percent of mixed powder Ni-Cr-B-Si, Co-Cr-B-Si, Cu, Al, ...

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Abstract

The invention discloses a method for heating and melt-cladding a TiC reinforced high-entropy alloy wear-resistant composite coating through high-frequency induction. An inductor is adopted to heat andmelt-clad mixed powder prepared from Ni-Cr-B-Si, Co-Cr-B-Si, Cu, Al and TiC according to a certain proportion under the protection of argon gas on the surface of low-carbon steel; composition elements are five elements or more, and during a melt-cladding process, a retardation effect of a high-entropy alloy is achieved, and primary Cr7C3 has the characteristic of fine grain size; the AlCoCrCuNi high-entropy alloy coating reinforced by TiC and Cr7C3 is finally formed on a surface of a steel substrate.

Description

technical field [0001] The invention belongs to the field of low-carbon steel surface treatment, in particular to a method for preparing a wear-resistant composite coating by induction cladding. Background technique [0002] In machinery, aerospace, textile, automobile, geological exploration and other industries, a large number of parts are under friction and wear conditions, so the requirements for the wear resistance of parts are getting higher and higher. In order to improve the wear resistance of metals, surface modification or coating methods are usually used. Among them, Fe-Cr-B-Si, Ni-Cr-B-Si, Co-Cr-B-Si, etc. are mostly used as coating materials, and the reinforcing phase is (Cr, Fe) 7 C 3 , the effect is better. TiC carbide has always been a commonly used reinforcing phase in coatings, and wear-resistant coating materials are prepared by high-energy beam cladding for surface technology. In addition, high-entropy alloys are alloys composed of more than five elem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10
CPCC23C24/103
Inventor 卢金斌殷振朱其新汪帮富蒋全胜齐芳娟齐文春李江澜吴永忠
Owner GUANGDONG HECHENG ENVIRONMENTAL ENG CO LTD
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