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A kind of composite material of alumina ceramic and wear-resistant steel and preparation method thereof

A technology of alumina ceramics and composite materials, which is applied in the field of wear-resistant steel matrix modification, can solve the problems of large residual stress at the interface, poor chemical stability, and high cost, and achieve good wear resistance, high connection strength, and no cracks.

Active Publication Date: 2022-02-15
JIAMUSI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are also problems such as the complexity of the composite process of ceramics and wear-resistant steel matrix, high cost, large residual stress at the interface, and poor chemical stability.

Method used

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  • A kind of composite material of alumina ceramic and wear-resistant steel and preparation method thereof
  • A kind of composite material of alumina ceramic and wear-resistant steel and preparation method thereof
  • A kind of composite material of alumina ceramic and wear-resistant steel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The composite material of alumina ceramics and wear-resistant steel in this embodiment includes a wear-resistant steel substrate, a ceramic layer and an enamel layer, the enamel layer is located in the middle of the wear-resistant steel substrate and the ceramic layer, and the thickness of the enamel layer is 5 mm; The thickness of the ceramic layer is 20mm; the enamel layer includes the following components in mass percentage: SiO 2 50%, B 2 o 3 16%, Na 2 O 12%, K 2 O 6%, CoO 1.5%, NiO 1.5%, balance Al 2 o 3 ; The ceramic layer comprises the following components in mass percentage: TiO 2-x 4%, CuO2%, the balance is Al 2 o 3 .

[0023] This embodiment also provides the method for the above-mentioned composite material of alumina ceramics and wear-resistant steel, the method comprising the following steps:

[0024] Step 1. Pretreatment of the wear-resistant steel substrate: decarburize the wear-resistant steel substrate at a temperature of 940°C for 15 minutes,...

Embodiment 2

[0043] The composite material of alumina ceramics and wear-resistant steel in this embodiment includes a wear-resistant steel substrate, a ceramic layer and an enamel layer, the enamel layer is located in the middle of the wear-resistant steel substrate and the ceramic layer, and the thickness of the enamel layer is 1mm; The thickness of the ceramic layer is 5mm; the enamel layer includes the following components in mass percentage: SiO 2 40%, B 2 o 3 20%, Na 2 O 15%, K 2 O 1%, CoO 1%, NiO 1%, the balance is Al 2 o 3 ; The ceramic layer comprises the following components in mass percentage: TiO 2-x 10%, CuO10%, the balance is Al 2 o 3 .

[0044] This embodiment also provides the method for the above-mentioned composite material of alumina ceramics and wear-resistant steel, the method comprising the following steps:

[0045]Step 1. Pretreatment of the wear-resistant steel substrate: decarburize the wear-resistant steel substrate at a temperature of 910°C for 10 minute...

Embodiment 3

[0054] The composite material of alumina ceramics and wear-resistant steel in this embodiment includes a wear-resistant steel substrate, a ceramic layer and an enamel layer, the enamel layer is located in the middle of the wear-resistant steel substrate and the ceramic layer, and the thickness of the enamel layer is 5 mm; The thickness of the ceramic layer is 35mm; the enamel layer includes the following components in mass percentage: SiO 2 60%, B 2 o 3 5%, Na 2 O 1%, K 2 O 10%, CoO 5%, NiO 5%, the balance is Al 2 o 3 ; The ceramic layer comprises the following components in mass percentage: TiO 2-x 1%, CuO 1%, the balance is Al 2 o 3 .

[0055] This embodiment also provides the method for the above-mentioned composite material of alumina ceramics and wear-resistant steel, the method comprising the following steps:

[0056] Step 1. Pretreatment of the wear-resistant steel substrate: decarburize the wear-resistant steel substrate at a temperature of 940°C for 20 minut...

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Abstract

The invention provides a composite material of alumina ceramics and wear-resistant steel, which includes a wear-resistant steel substrate, a ceramic layer and an enamel layer, and the enamel layer is located between the wear-resistant steel substrate and the ceramic layer, and also provides the preparation of the composite material Method: Decarburize the wear-resistant steel matrix to obtain the wear-resistant steel matrix, prepare enamel powder and ceramic particles, and then put the above materials into the abrasive tool in turn, pressurize in both directions and sinter at normal pressure to obtain alumina ceramics and wear-resistant steel of composite materials. The enamel layer of the present invention can not only wet the ceramic layer, but also improve the wettability with the wear-resistant steel substrate to form a chemical bond. Part of the enamel powder is filled in the pores of the ceramic layer, and the wear-resistant steel substrate and the enamel layer are not easy Bubble formation, TiO in the ceramic layer 2‑x Using CuO as a sintering aid can reduce the sintering temperature, prevent the oxidation of the wear-resistant steel matrix, improve the preparation efficiency, and reduce the preparation cost.

Description

technical field [0001] The invention belongs to the technical field of modification of wear-resistant steel substrates, and in particular relates to a composite material of alumina ceramics and wear-resistant steel and a preparation method thereof. Background technique [0002] The wear-resistant steel matrix is ​​mainly used in the conveying or crushing of materials in mining, metallurgy and electric power industries, such as lining plates, grinding rollers, shovel teeth and crushing walls. Parts fail. In order to further improve the wear resistance of the wear-resistant steel matrix, the wear-resistant steel matrix of a single material cannot meet the requirements of enterprises. Therefore, the development of composite wear-resistant materials based on wear-resistant steel matrix has become an urgent issue in the industry. At present, the processes for improving the wear resistance of wear-resistant steel substrates mainly include inlaying cemented carbide blocks, bimetal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C8/00C04B35/10C04B35/626C23D5/00
CPCC23D5/005C03C8/00C04B35/10C04B35/62605C04B2235/3232C04B2235/3281
Inventor 焦仁宝荣守范李洪波王迪张圳炫朱永长刘力
Owner JIAMUSI UNIVERSITY