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A multi-scale particle-reinforced plasma surfacing iron-based hypereutectic wear-resistant coating and its preparation method

A plasma stack and particle-enhanced technology, applied in the field of surface wear-resistant coating, can solve problems such as poor process characteristics and reduce production costs, and achieve the effects of preventing agglomeration, avoiding uneven tissue, and preventing growth

Active Publication Date: 2020-05-01
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 multi-scale particle-reinforced plasma surfacing iron-based hypereutectic wear-resistant coating and a preparation method thereof. The structure of the eutectic coating is further refined and homogenized, so that the coating has higher hardness, and at the same time improves the cladding process characteristics, reduces the tendency of cracks, and obtains a cheap and high-quality coating with high hardness and good wear resistance. The hypereutectic coating prolongs the service life of the surface modified workpiece and reduces the production cost

Method used

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  • A multi-scale particle-reinforced plasma surfacing iron-based hypereutectic wear-resistant coating and its preparation method
  • A multi-scale particle-reinforced plasma surfacing iron-based hypereutectic wear-resistant coating and its preparation method
  • A multi-scale particle-reinforced plasma surfacing iron-based hypereutectic wear-resistant coating and its preparation method

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Embodiment 1

[0050] Combine Figure 4 , Figure 5 with Image 6 In this embodiment, a multi-scale particle-reinforced plasma surfacing iron-based hypereutectic wear-resistant coating includes the following mass percentage components: iron-based self-fluxing alloy powder 58%, micron Cr 3 C 2 40% powder, 1% micron Ti powder, nano Y 2 O 3 1% powder, wherein the iron-based self-fluxing alloy powder is composed of the following components by mass percentage: C0.12%, Cr15%, Ni3.5%, Mo1.2%, Fe as the balance; iron-based self-fusing The particle size of the alloy powder is 45~180μm, micron Cr 3 C 2 The powder adopts NiCr-Cr 3 C 2 The particle size of the powder is 15~45μm, the particle size of micron Ti powder is 50~90μm, nano Y 2 O 3 The particle size of the powder is 40-70 nm; specifically, the hypereutectic coating is made by plasma surfacing, and the preparation method is:

[0051] Step a: Substrate 1 pretreatment:

[0052] In this embodiment, low-carbon steel is selected as the surfacing substrate...

Embodiment 2

[0080] A multi-scale particle-enhanced plasma surfacing iron-based hypereutectic wear-resistant coating of this embodiment includes the following mass percentage components: iron-based self-fluxing alloy powder 69%, micron Cr 3 C 2 30% powder, 0.5% micron Ti powder, nano Y 2 O 3 0.5% of the powder, wherein the iron-based self-fluxing alloy powder is composed of the following components by mass percentage: C0.14%, Cr16%, Ni4%, Mo1.4%, Fe as the balance; iron-based self-fluxing alloy The particle size of the powder is 45~180μm, micron Cr 3 C 2 The powder adopts NiCr-Cr 3 C 2 The particle size of the powder is 15~45μm, the particle size of micron Ti powder is 50~90μm, nano Y 2 O 3 The particle size of the powder is 40-70 nm; specifically, the hypereutectic coating is made by plasma surfacing, and the preparation method is:

[0081] Step a: Substrate 1 pretreatment:

[0082] In this embodiment, low-carbon steel is selected as the surfacing substrate 1, and the surface to be surfacing is...

Embodiment 3

[0093] A multi-scale particle-enhanced plasma surfacing iron-based hypereutectic wear-resistant coating of this embodiment includes the following mass percentage components: iron-based self-fluxing alloy powder 48.4%, micron Cr 3 C 2 Powder 50%, micron Ti powder 0.8%, nano Y 2 O 3 Powder 0.8%, wherein the iron-based self-fluxing alloy powder is composed of the following components by mass percentage: C0.16%, Cr18%, Ni4.5%, Mo1.6%, Fe as the balance; iron-based self-fusing The particle size of the alloy powder is 45~180μm, micron Cr 3 C 2 The powder adopts NiCr-Cr 3 C 2 The particle size of the powder is 15~45μm, the particle size of micron Ti powder is 50~90μm, nano Y 2 O 3 The particle size of the powder is 40-70 nm; specifically, the hypereutectic coating is made by plasma surfacing, and the preparation method is:

[0094] Step a: Substrate 1 pretreatment:

[0095] In this embodiment, low-carbon steel is selected as the surfacing substrate 1, and the surface to be surfacing is pol...

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Abstract

The invention discloses a multi-scale particle reinforced plasma surfacing iron-based hypereutectic wear-resistant coating and a preparation method thereof, and belongs to the technical field of surface wear-resistant coatings. The plasma surfacing iron-based hypereutectic wear-resistant coating is prepared from the following components in a plasma surfacing mode, and wherein the components comprise, by mass, 48-69% of iron-based self-fluxing alloy powder, 30-50% of micron Cr3C2 powder, 0.5-1% of micron Ti powder, and 0.5-1% of nano Y2O3 powder. The preparation method of the plasma surfacing iron-based hypereutectic wear-resistant coating comprises the following steps of substrate pretreatment, preparation and drying of composite powder, preparation of the coating and post-heat treatment.By using the technical scheme, on the basis that hardness and wear resistance of the multi-scale particle reinforced plasma surfacing iron-based hypereutectic wear-resistant coating can be further improved, the process performance of the coating can be improved obviously, and cracks of the coating are effectively prevented.

Description

Technical field [0001] The invention relates to the technical field of surface wear-resistant coatings, and more specifically, to a multi-scale particle-reinforced plasma surfacing iron-based hypereutectic wear-resistant coating and a preparation method thereof. Background technique [0002] The abrasion of the material surface causes unavoidable damage to the mechanical parts, which causes a serious waste of materials and energy. Therefore, it is of great significance to use surface modification technology to treat the surface of the material to improve the performance of the material. Plasma surfacing technology uses high-temperature plasma arc to heat and melt the alloy powder and the base material. During the cooling process, a layer of surfacing coating with better comprehensive performance is formed on the surface of the base material, which is different from the base material. Plasma surfacing technology has a wide range of applications, simple operation, good controllabil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10C22C30/00B22F9/04C22C32/00
CPCB22F9/04B22F2009/041B22F2009/042C22C30/00C22C32/0047C22C38/005C22C38/44C22C38/50C23C24/103
Inventor 斯松华姜闪闪汪鹏
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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