Abrasion-resistant and anticorrosion pipe or pipe fitting with double ceramic lining layers and preparation method of abrasion-resistant and anticorrosion pipe or pipe fitting

A technology of ceramic lining and ceramic layer, applied in the direction of pipes/pipe joints/fittings, pipeline protection, pipeline anticorrosion/rust protection, etc., can solve the problems of low reliability and short service life, and achieve long service life and reduce production. cost, the effect of avoiding small peeling

Active Publication Date: 2017-01-11
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a wear-resistant and corrosion-resistant pipeline or pipe fitting with double ceramic lining and its preparation method, which is used to solve the problems of low reliability and short service life of the transportation pipeline or pipe fitting system in the prior art, and reduce Pollutant emissions from thermal power generation and other enterprises

Method used

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  • Abrasion-resistant and anticorrosion pipe or pipe fitting with double ceramic lining layers and preparation method of abrasion-resistant and anticorrosion pipe or pipe fitting
  • Abrasion-resistant and anticorrosion pipe or pipe fitting with double ceramic lining layers and preparation method of abrasion-resistant and anticorrosion pipe or pipe fitting
  • Abrasion-resistant and anticorrosion pipe or pipe fitting with double ceramic lining layers and preparation method of abrasion-resistant and anticorrosion pipe or pipe fitting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] In this embodiment, the method for preparing a wear-resistant and corrosion-resistant pipe or pipe fitting with dual ceramic linings includes the following steps:

[0047] (1) The mass ratio of furfurone resin: silicon carbide particles (average diameter 10μm): p-toluenesulfonic acid = 100: 120: 5 to mix the above raw materials, ball mill for 1 hour to obtain the powder, the materials in the powder are evenly mixed , There is no obvious reunion phenomenon;

[0048] (2) Prepare a liquid slurry with the powder obtained in (1) at a mass ratio of powder: alcohol=100:200, and then fully soak the foam with a thickness of 5mm in the slurry and squeeze out the excess slurry. Air dry at 120°C. After air drying, the sample is immersed in the slurry again, and the excess slurry between the holes is blown off, and then air dried at a high temperature of 120°C. Repeat the above steps 5 times to obtain the required foam ceramic layer precursor;

[0049] (3) Prepare the material powder ob...

Embodiment 2

[0055] In this embodiment, the method for preparing a wear-resistant and corrosion-resistant pipe or pipe fitting with dual ceramic linings includes the following steps:

[0056] (1) Mix the above-mentioned raw materials at a mass ratio of epoxy resin: alumina particles: citric acid = 100:50:5, and ball mill for 2 hours to obtain a slurry; the particle size of the alumina particles is 2 microns;

[0057] (2) Prepare a liquid slurry with the powder obtained in (1) at a mass ratio of powder: alcohol=100:200, and then fully soak the foam with a thickness of 5mm in the slurry and squeeze out the excess slurry. Air dry at 120°C. After air drying, the sample is immersed in the slurry again, and the excess slurry between the holes is blown off, and then air dried at a high temperature of 120°C. Repeat the above steps 5 times to obtain the required foam ceramic layer precursor;

[0058] (3) Prepare the material powder obtained in (1) with a mass ratio of material powder: alcohol=100:20, mi...

Embodiment 3

[0064] In this embodiment, the method for preparing a wear-resistant and corrosion-resistant pipe or pipe fitting with dual ceramic linings includes the following steps:

[0065] (1) Mix the above-mentioned raw materials with a mass ratio of phenolic resin: silicon carbide particles: p-toluenesulfonic acid = 100:50:5, and ball mill for 2 hours to obtain slurry; the silicon carbide particles have a particle size of 2 microns.

[0066] (2) Prepare a liquid slurry with the powder obtained in (1) at a mass ratio of powder: alcohol=100:200, and then fully soak the foam with a thickness of 5mm in the slurry and squeeze out the excess slurry. Air dry at 120°C. After air drying, the sample is immersed in the slurry again, and the excess slurry between the holes is blown off, and then air dried at a high temperature of 120°C. Repeat the above steps 5 times to obtain the required foam ceramic layer precursor;

[0067] (3) Prepare the material powder obtained in (1) with a mass ratio of mater...

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Abstract

The invention relates to metal pipe or pipe fitting surface abrasion-resistant and anticorrosion protection technologies, in particular to an abrasion-resistant and anticorrosion pipe or pipe fitting with double ceramic lining layers and a preparation method of the abrasion-resistant and anticorrosion pipe or pipe fitting. The pipe or pipe fitting is composed of an abrasion-resistant and anticorrosion lining layer and a metal layer from inside to outside. The abrasion-resistant and anticorrosion lining layer is composed of a surface layer and a composite layer. The surface layer is a compact ceramic layer. The composite layer is a foamed ceramic layer. The composite layer is directly grown on the back face of the compact ceramic layer. The preparation process comprises the following steps of preparation of mixed powder, prilling and slurry preparing, sheet forming through mold pressing and preparation of a foam precursor, bonding, thermosetting forming in a mold, machining and bonding forming, pyrolyzing and sintering, and finished product obtaining through compositing. According to the ceramic lining layer abrasion-resistant and anticorrosion pipe or pipe fitting prepared through the method, the abrasion-resistant service life can be 5-10 times that of rubber lining abrasion-resistant layers, the pipe or pipe fitting has good tolerability to acid and alkali corrosion and high-temperature impact, and the replacement cycle of pipe or pipe fitting equipment can be effectively prolonged, so that the operating cost of enterprises is reduced, and emission of particulate pollutants is reduced.

Description

Technical field [0001] The invention relates to a wear-resistant and corrosion-resistant protection technology for the surface of metal pipes or pipe fittings, in particular to a wear-resistant and corrosion-resistant pipe or pipe fitting with double ceramic lining layers and a preparation method thereof, using a dense ceramic layer with double ceramic layers and double continuous phases- The foam ceramic layer / polymer composite material modifies the surface of metal pipes or fittings for wear and corrosion. Background technique [0002] Metal pipes or pipe fittings are the most widely used structural parts in modern industry. During use, pipes or pipe fittings are often subjected to erosion, wear and corrosion of medium particles, such as: used for transmission in thermal power plants, mines and petrochemical enterprises Mud, dusty materials, corrosive gas, liquid metal pipes or pipe fittings, valves, pump bodies and other auxiliary equipment. Wear and corrosion are two importa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/14F16L58/14
CPCF16L9/14F16L58/14
Inventor 张劲松杨振明田冲曹小明金鹏刘强
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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