Multi-scale particle reinforced plasma surfacing iron-based hypereutectic wear-resistant coating and preparation method thereof

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

Active Publication Date: 2018-12-18
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Multi-scale particle reinforced plasma surfacing iron-based hypereutectic wear-resistant coating and preparation method thereof
  • Multi-scale particle reinforced plasma surfacing iron-based hypereutectic wear-resistant coating and preparation method thereof
  • Multi-scale particle reinforced plasma surfacing iron-based hypereutectic wear-resistant coating and preparation method thereof

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Embodiment 1

[0050] combine Figure 4 , Figure 5 and Figure 6 , a kind of multi-scale particle reinforced iron-based hypereutectic wear-resistant coating for plasma surfacing of the present embodiment, the hypereutectic coating includes the following components in mass percentage: 58% of iron-based self-fluxing alloy powder, micron Cr 3 C 2 Powder 40%, Micron Ti powder 1%, Nano Y 2 o 3 Powder 1%, wherein, the above-mentioned iron-based self-fluxing alloy powder is composed of the following components in mass percentage: C0.12%, Cr15%, Ni3.5%, Mo1.2%, Fe is the balance; iron-based self-fluxing The particle size of alloy powder is 45~180μm, micron Cr 3 C 2 Powder adopts NiCr-Cr 3 C 2 Powder, its particle size is 15-45 μm, the particle size of micron Ti powder is 50-90 μm, nanometer Y 2 o 3 The particle size of the powder is 40-70nm; specifically, the hypereutectic coating is made by plasma surfacing, and the preparation method is as follows:

[0051] Step a: Substrate 1 pretrea...

Embodiment 2

[0080] A kind of multiscale particle-reinforced iron-based hypereutectic wear-resistant coating for plasma surfacing of the present embodiment, the hypereutectic coating includes the following components in mass percentage: 69% of iron-based self-fluxing alloy powder, micron Cr 3 C 2 Powder 30%, Micron Ti powder 0.5%, Nano Y 2 o 3 Powder 0.5%, wherein, the above-mentioned iron-based self-fluxing alloy powder is composed of the following components in mass percentage: C0.14%, Cr16%, Ni4%, Mo1.4%, Fe is the balance; iron-based self-fluxing alloy The particle size of powder is 45~180μm, micron Cr 3 C 2 Powder adopts NiCr-Cr 3 C 2 Powder, its particle size is 15-45 μm, the particle size of micron Ti powder is 50-90 μm, nanometer Y 2 o 3 The particle size of the powder is 40-70nm; specifically, the hypereutectic coating is made by plasma surfacing, and the preparation method is as follows:

[0081] Step a: Substrate 1 pretreatment:

[0082] In this embodiment, low-carbon s...

Embodiment 3

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

[0094] Step a: Substrate 1 pretreatment:

[0095] In this embodiment, low-carbon...

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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, in particular to a multi-scale particle-reinforced plasma surfacing iron-based hypereutectic wear-resistant coating and a preparation method thereof. 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 metals, ...

Claims

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Application Information

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Patent Type & Authority Applications(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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