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High wear-resistant steel roller of belt conveyor and preparation method thereof

A belt conveyor, high wear-resistant technology, applied in metal material coating process, fusion spraying, coating, etc., can solve the problems of high production cost, improve service life, ensure safety and stability, and prevent corrosion and the effect of wear

Inactive Publication Date: 2012-05-02
BEIJING UNIV OF TECH
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcoming of high production cost of traditional ceramic coatings, adopt combined thermal spraying technology on the surface of idler steel drum, and provide a low-cost ceramic coating preparation technology

Method used

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  • High wear-resistant steel roller of belt conveyor and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0019] The first step, substrate pretreatment

[0020] After cleaning, sandblast the selected steel roller installed on the support shaft of the roller to make the surface roughness of the substrate Ra<0.8;

[0021] The second step is to prepare the transition layer

[0022] Take 1Kg of NiAl wire produced by Beijing University of Technology, install the substrate treated in the first step on the workbench of the spraying equipment, and prepare the first substrate of the transition layer under the first set of arc process conditions, and set the spraying current to 150A , voltage 30V, spraying air pressure 0.55MP, spraying distance 200mm, deposited transition layer 100μm;

[0023] The third step is to prepare the ceramic layer

[0024] Take 2Kg of hollow aluminum-titanium powder prepared by Shenyang Silicate Research Institute, preheat the first substrate prepared in the second step to 200°C, and then prepare the second substrate under the second set of flame spraying process...

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Abstract

The invention discloses a high wear-resistant steel roller of a belt conveyor and a preparation method thereof, belonging to the technical field of conveyors. The preparation method comprises the following steps: spray-coating a metal transition layer on a working surface of the steel roller of a supporting roller and spray-coating a ceramic coating on the transition layer, wherein the transition layer is prepared by adopting an electric arc spray-coating technology, the chemical formula of material of the transition layer is NiAl, then the ceramic layer is prepared by adopting a flame spray-coating technology, the chemical formula of the material of the ceramic layer is AL2O3-xTiO2, x is the molar percentage of TiO2 and the value of x is 1-20. According to the preparation method disclosed by the invention, the ceramic wear-resistant layer is hot spray-coated on the surface of the steel roller for playing roles in reducing wear and preventing corrosion, so that rusting and wear on the surface of the roller can be effectively prevented and the service life of the supporting roller can be prolonged.

Description

technical field [0001] The invention relates to an idler steel cylinder used for belt conveyors in industries such as mines, docks, metallurgy and coal, and a preparation method thereof, belonging to the technical field of conveyors. Background technique [0002] Belt conveyor is an important material conveying equipment, which is widely used in mines, docks, chemical industry and other industries. Idler roller is a common vulnerable part of belt conveyor, which plays a decisive role in the normal operation of belt conveyor. Idlers include steel rollers, shafts, bearings, and seals. During the use of the steel roller, the corrosive substances directly act on the surface, which can easily cause corrosion and wear on the surface of the roller, and reduce the service life of the idler roller. Contents of the invention [0003] The purpose of the present invention is to overcome the disadvantage of high production cost of the traditional ceramic coating, and to provide a low-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/04
Inventor 索红莉王毅刘敏李孟晓王金华毛磊
Owner BEIJING UNIV OF TECH
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