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Method for modifying wear resistance and corrosion prevention of metal component surface

A technology for the surface of metal components and workpieces, which is applied in the field of preparation of wear-resistant and anti-corrosion protective layers on the surfaces of metal components, can solve the problems of wear and corrosion, short service life, etc., and achieves the effects of low cost, reduced production cost and simple method.

Active Publication Date: 2012-06-20
LIAONING ZHUOYI NEW MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a method for modifying the surface of metal components for wear resistance and anticorrosion, so as to solve the problems of short service life of valves and pump bodies in the prior art due to severe wear and corrosion.

Method used

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  • Method for modifying wear resistance and corrosion prevention of metal component surface
  • Method for modifying wear resistance and corrosion prevention of metal component surface
  • Method for modifying wear resistance and corrosion prevention of metal component surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] Example 1: Wear-resistant and anti-corrosion modification of the inner surface of the metal straight pipe

[0096] ①Texture treatment of inner surface of steel pipe

[0097] Select outer diameter the inside diameter of For the 45# steel pipe with a length of 200mm, the inner surface of the steel pipe is first roughened by sandblasting, and then the inner surface of the steel pipe is machined with annular shallow grooves with a distance of 10mm and a depth of 0.5mm. The significance of surface roughening is to improve the interface bonding. Quality, improve interface bonding strength.

[0098] ② Preparation of foamed silicon carbide ceramic tube

[0099] According to the patent: a high-strength silicon carbide foam ceramics and its preparation method (ZL00110479.9), a silicon carbide foam ceramic tube is prepared, the average size of the mesh is 2.0mm, the volume fraction is 50%, and the size is: outer diameter the inside diameter of The length is 100mm two sect...

Embodiment 2

[0111] Example 2: Wear-resistant and anti-corrosion modification of the inner surface of the metal straight pipe

[0112] The difference from Example 1 lies in the preparation of the resin polymer mixed castable.

[0113] Epoxy resin, SiC micropowder (particle size: 200nm), curing agent polyamide, and diluent acetone were formulated into a slurry according to a certain ratio (Table 2), and stirred evenly.

[0114] Table 2 Polymer mixed castables

[0115]

[0116] Practical application results show that this embodiment is applied to the desulfurization pipeline of a thermal power plant, and its service life is more than 5 times higher than that of the existing rubber lined pipe, which fully shows that the present invention can improve the service life of metal components, reduce production costs, eliminate important role in safety hazards.

Embodiment 3

[0117] Example 3: Wear-resistant and anti-corrosion modification of the inner surface of the metal straight pipe

[0118] The difference from Example 1 lies in the preparation of the polymer mixed castable.

[0119] The neoprene, curing agent, and diluent are formulated into a slurry according to a certain ratio (Table 3), and stirred evenly.

[0120] Table 3 Polymer mixed castables

[0121]

[0122] Practical application results show that this embodiment is applied to the desulfurization pipeline of a thermal power plant, and its service life is more than 5 times higher than that of the existing rubber lined pipe, which fully shows that the present invention can improve the service life of metal components, reduce production costs, eliminate important role in safety hazards.

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Abstract

The invention relates to preparation technology for a wear-resistant and corrosion-prevention protective layer of a metal component surface, in particular to a method for modifying wear resistance and corrosion prevention of a metal component surface, which solves the problems that a valve, a pump and the like in the prior art are short in service life and the like due to serious wear and corrosion. Firstly, a component in a needed shape and of a needed size is made of foamed ceramics and fixed to the metal component surface by means of mechanical matching, connecting, welding, adhering or inlaying; and secondly, high polymer mixing castables are poured into foamed ceramic meshes by means of normal-pressure pouring, centrifugal pouring, vacuum suction pouring or injection molding, the foamed ceramic / high polymer co-continuous composite protective layer is obtained after curing, vulcanization or solidification, and the protective layer is firmly combined with the metal component surface. After the inner wall surface of a steel pipeline in a desulfurization system of a thermal power plant is protected by the method, the service life of the pipeline is five times longer than that of an existing pipeline protected by a lining rubber pipe.

Description

technical field [0001] The invention relates to a preparation technology of a wear-resistant and anti-corrosion protective layer on the surface of a metal component, in particular to a method for modifying the (inner and outer) surface of a metal component for wear-resistant and anti-corrosion by using a foam ceramic / polymer double continuous phase composite material. Background technique [0002] Metal materials are the most widely used structural materials in modern industry. During use, metal structural parts are often subjected to erosion, wear and corrosion of medium particles, such as metal pipes and valves used to transport mud, dust materials, corrosive gases and liquids in thermal power plants, mines and petrochemical enterprises And and the pump body and so on. Wear and corrosion are two important reasons for reducing the life of materials and increasing production costs. The direct loss caused by wear and corrosion in my country accounts for about 2%-4% of the na...

Claims

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Application Information

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IPC IPC(8): F16L57/06F16L58/04C08L61/06C08L63/00C08L7/00C08L21/00C08L77/00C08L23/06C08L27/06C08L23/12B29C41/04B29C45/00
Inventor 张劲松曹小明杨振明田冲金鹏全锋厚马得举付超
Owner LIAONING ZHUOYI NEW MATERIAL
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