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A kind of plasma surfacing iron-based cr with micron ti added 3 c 2 Hypereutectic wear-resistant coating and preparation method thereof

A technology of wear-resistant coating and plasma pile, which is applied in the field of surface wear-resistant coating, can solve the problems of poor process characteristics, reduce production costs, prolong the service life of surface modified workpieces, etc., prevent powder agglomeration, and solve the problem of poor coating Neatness, effect of improving cladding quality

Active Publication Date: 2020-05-05
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims at the existing hypereutectic coating due to Cr 3 C 2 Insufficiencies that are difficult to eliminate, such as poor process characteristics and crack tendency caused by excessive addition, provide a plasma surfacing iron-based Cr alloy with added micron Ti 3 C 2 The hypereutectic wear-resistant coating and its preparation method further refine and homogenize the structure of the hypereutectic coating, make the coating have higher hardness, improve the cladding process characteristics, reduce the tendency of cracks, and obtain a A low-cost and high-quality hypereutectic coating with high hardness and good wear resistance, which prolongs the service life of surface-modified workpieces and reduces production costs

Method used

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  • A kind of plasma surfacing iron-based cr with micron ti added <sub>3</sub> c <sub>2</sub> Hypereutectic wear-resistant coating and preparation method thereof
  • A kind of plasma surfacing iron-based cr with micron ti added <sub>3</sub> c <sub>2</sub> Hypereutectic wear-resistant coating and preparation method thereof
  • A kind of plasma surfacing iron-based cr with micron ti added <sub>3</sub> c <sub>2</sub> Hypereutectic wear-resistant coating and preparation method thereof

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Embodiment 1

[0050] combine Figure 4 , Figure 5 and Figure 6 , a plasma surfacing iron-based Cr with micron Ti added in this embodiment 3 C 2 A hypereutectic wear-resistant coating, the hypereutectic wear-resistant coating includes a composite coating 2, one end of the composite coating 2 is provided with a first iron-based coating 3, and the surface of the composite coating 2 is provided with a second iron-based coating Coating 4; Composite coating 2 comprises the following components in mass percentage: 59% of iron-based self-fluxing alloy powder, micron Cr 3 C 2 Powder 40%, micron Ti powder 1%; the first iron-based coating 3 and the second iron-based coating 4 both include iron-based self-fluxing alloy powder; wherein, the above-mentioned iron-based self-fluxing alloy powder includes the following mass percentage Components: C0.12%, Cr15%, Ni3.5%, Mo1.2%, Fe is the balance; the particle size of iron-based self-fluxing alloy powder is 45-180μm, micron Cr 3 C 2 Powder adopts NiC...

Embodiment 2

[0081] A kind of plasma surfacing iron-based Cr with micron Ti added in this embodiment 3 C 2 Hypereutectic wear-resistant coating, the hypereutectic coating includes the following components in mass percentage: 69.5% iron-based self-fluxing alloy powder, micron Cr 3 C 2 Powder 30%, micron Ti powder 0.5%, wherein, the above-mentioned iron-based self-fluxing alloy powder is composed of the following components by mass percentage: C0.14%, Cr16%, Ni4%, Mo1.4%, Fe is the balance; The particle size of the iron-based self-fluxing alloy powder is 45-180 μm, and the micron Cr 3 C 2 The powder is NiCr-Cr 3 C 2 The powder has a particle size of 15-45 μm, and the particle size of the micron Ti powder is 50-90 μm; specifically, the hypereutectic coating is made by plasma surfacing, and the preparation method is as follows:

[0082] Step a: Substrate 1 pretreatment:

[0083] In this embodiment, low-carbon steel is selected as the surfacing base material 1, and the surface to be surf...

Embodiment 3

[0094] A kind of plasma surfacing iron-based Cr with micron Ti added in this embodiment 3 C 2 Hypereutectic wear-resistant coating, the hypereutectic coating includes the following components in mass percentage: 49.2% iron-based self-fluxing alloy powder, micron Cr 3 C 2 Powder 50%, micron Ti powder 0.8%, wherein, the above-mentioned iron-based self-fluxing alloy powder is composed of the following components by mass percentage: C0.16%, Cr18%, Ni4.5%, Mo1.6%, Fe is more than Amount; iron-based self-fluxing alloy powder particle size is 45 ~ 180μm, micron Cr 3 C 2 Powder adopts NiCr-Cr 3 C 2 The powder has a particle size of 15-45 μm, and the particle size of the micron Ti powder is 50-90 μm; specifically, the hypereutectic coating is made by plasma surfacing, and the preparation method is as follows:

[0095] Step a: Substrate 1 pretreatment:

[0096] In this embodiment, low-carbon steel is selected as the surfacing base material 1, and the surface to be surfacing is po...

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Abstract

The invention discloses a plasma-surfacing iron-based Cr3C2 hypereutectic wear-resistant coating layer added with micrometer Ti and a preparation method thereof and belongs to the technical field of wear-resistant coating layers on the surfaces. The plasma-surfacing iron-based Cr3C2 hypereutectic wear-resistant coating layer is prepared from the following components in percent by mass after plasmasurfacing: 49%-69.5% of iron-based self-fluxed alloy powder, 30%-50% of micrometer Cr3C2 powder and 0.5%-1% of micrometer Ti powder. The plasma-surfacing iron-based Cr3C2 hypereutectic wear-resistantcoating layer is prepared by the following steps: pretreatment of base materials, preparation and drying of composite powder, preparation of the coating layer and post heat treatment. By use of the technical scheme disclosed by the invention, on the basis of improving the hardness and wear resistance of the plasma-surfacing iron-based hypereutectic wear-resistant coating layer enhanced by multiscale particles, the process characteristics of the coating layer can be obviously improved, and the generation of cracks of the coating layer can be effectively prevented.

Description

technical field [0001] The invention relates to the technical field of surface wear-resistant coatings, more specifically, to a plasma surfacing iron-based Cr alloy with micron Ti added. 3 C 2 Hypereutectic wear-resistant coating and its preparation method. Background technique [0002] The wear and tear of the material surface has caused inevitable damage to mechanical parts, resulting in a serious waste of materials and energy. Therefore, it is of great significance to use surface modification technology to treat the material surface to improve the performance of the material. Plasma surfacing technology uses high-temperature plasma arc to heat and melt alloy powder and base material. During the cooling process, a layer of surfacing coating with better comprehensive properties than the base material is rapidly formed on the surface of the base material. Plasma surfacing technology is widely used, easy to operate, good controllability, can be used for surfacing various me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10
CPCC23C24/103
Inventor 斯松华姜闪闪汪鹏
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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