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Ternary boride reinforced iron-based wear resistance coating and preparation method thereof

A ternary boride and wear-resistant coating technology, which is applied in coatings, metal material coating processes, etc., can solve problems such as complex coating preparation processes, and achieve high hardness and wear resistance

Active Publication Date: 2018-12-18
天津德天助非晶纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Patent CN1970843A discloses a method for preparing ternary boride-based ceramic coatings by plasma spraying. The plasma spraying method is used to obtain ternary borides (Mo 2 FeB 2 )-based cermet coating, and then after normalizing, a chemical reaction occurs between the coating and the base material to form a reaction interface, and the wear resistance is greatly improved, but the coating preparation process is relatively complicated

Method used

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  • Ternary boride reinforced iron-based wear resistance coating and preparation method thereof
  • Ternary boride reinforced iron-based wear resistance coating and preparation method thereof

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Effect test

Embodiment 1

[0034] The ternary boride reinforced iron-based wear-resistant coating of this embodiment is prepared according to the following steps:

[0035] (1) Preparation of ternary boride powder: Weigh TiO 2 Powder 26.6kg, Cr 2 o 3 Powder 35.9kg, B 4 C powder 25.9kg, C powder 11.6kg, Fe powder 2kg, mix to obtain mixed powder 1, add 1.5kg polyvinyl alcohol and 100L pure water to mixed powder 1; Through ball mill mixing, the rotating speed of ball mill is 300r / min, ball milling time 2h, spray granulation, reaction sintering (sintering system: Ar 2 protection, control the temperature at 1300-1350°C, hold for 2 hours, and cool with the furnace) to prepare Cr 0.5 Ti 0.5 B 2 , that is, ternary boride powder (the particle size of the prepared ternary boride powder is 10-150 μm);

[0036] (2) Surface treatment of the Q235 steel substrate: first, use a corundum grinder to grind the Q235 steel substrate to remove the rust on the surface and increase the surface roughness, then polish it w...

Embodiment 2

[0040] The ternary boride reinforced iron-based wear-resistant coating of this embodiment is prepared according to the following steps:

[0041] (1) Preparation of ternary boride powder: Weigh TiO 2 Powder 26.6kg, Cr 2 o 3 Powder 35.9kg, B 4 C powder 25.9kg, C powder 11.6kg, Fe powder 2kg, mix to obtain mixed powder 1, add 1.5kg polyvinyl alcohol and 100L pure water to mixed powder 1; Through ball mill mixing, the rotating speed of ball mill is 300r / min, ball milling time 2h, spray granulation, reaction sintering (sintering system: H 2 protection, control the temperature at 1350-1400°C, hold for 2 hours, and cool with the furnace) to prepare Cr 0.5 Ti 0.5 B 2 , that is, ternary boride powder (the particle size of the prepared ternary boride powder is 90-140 μm);

[0042] (2) Surface treatment of the Q235 steel substrate: first, use a corundum grinder to grind the Q235 steel substrate to remove the rust on the surface and increase the surface roughness, then polish it wi...

Embodiment 3

[0046] The ternary boride reinforced iron-based wear-resistant coating of this embodiment is prepared according to the following steps:

[0047] (1) Preparation of ternary boride powder: Weigh TiO 2 Powder 26.6kg, Cr 2 o 3 Powder 35.9kg, B 4 C powder 25.9kg, C powder 11.6kg, Fe powder 2kg, mix to obtain mixed powder 1, add 1.5kg polyvinyl alcohol and 100L pure water to mixed powder 1; Through ball mill mixing, the rotating speed of ball mill is 100r / min, ball mill time 5h, spray granulation, reaction sintering (sintering system is: Ar 2 protection, control the temperature at 1400-1450°C, hold for 2 hours, and cool with the furnace) to prepare Cr 0.5 Ti 0.5 B 2 , that is, ternary boride powder (the particle size of the prepared ternary boride powder is 100-150 μm);

[0048] (2) Surface treatment of the Q235 steel substrate: first, use a corundum grinder to grind the Q235 steel substrate to remove the rust on the surface and increase the surface roughness, then polish it ...

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Abstract

The invention discloses a ternary boride reinforced iron-based wear resistance coating and a preparation method thereof, belongs to the field of metal material coating, and aims to provide the ternaryboride reinforced iron-based wear resistance coating with simple preparation, high coating wear resistance and low cost and the preparation method thereof. The ternary boride reinforced iron-based wear resistance coating is composed of raw materials of ternary boride powder and self-melting powder of iron-based alloy, or self-melting powder of nickel-based alloy, and a high wear resistant iron-based coating is prepared on the surface of a matrix material by an induction cladding process. The preparation method includes the following steps of preparation of the ternary boride powder, surface treatment of steel matrix Q235, preparation of induction cladding pre-coating, and heating by induction cladding equipment. The ternary boride reinforced iron-based wear resistance coating has high hardness and wear resistance, and can be applied to shovel teeth of excavators, lining boards of ball mills, scraper conveyors for coal mines, bearings and other places requiring wear resistance.

Description

technical field [0001] The invention belongs to the field of plating of metal materials, in particular to an iron-based wear-resistant coating and a preparation method thereof. Background technique [0002] Fe60 and other iron-based self-fluxing alloy powders are typical raw materials for laser-prepared high-hardness and high-wear-resistant alloy coatings. The disadvantages are high melting point, poor self-fluxing, high crack sensitivity of the laser cladding layer, and easy generation of pores, etc. , these shortcomings limit its wide application. Especially when laser cladding deposition is used to prepare large-size and high-thickness (>3mm) friction parts, the cracks caused by stress and structural phase transformation stress are the key problems restricting laser forming of high-performance friction parts. Therefore, for laser additive manufacturing of high wear-resistant iron-based alloy parts, it is necessary to start with alloy composition design, form a new all...

Claims

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Application Information

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IPC IPC(8): C23C24/10
CPCC23C24/103
Inventor 樊自拴郭漫青樊金明王山松
Owner 天津德天助非晶纳米科技有限公司
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