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Wear-resistant steel elbow

A wear-resistant steel and elbow technology, which is applied in the field of wear-resistant steel elbows, can solve the problems of elbow corrosion and easy wear of the coating, and achieve the effects of preventing corrosion, improving water resistance and adhesion, and improving wear resistance

Inactive Publication Date: 2021-09-17
ZHEJIANG GOOD FITTINGS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to improve the problem that the coating at the joint between the elbow and the pipe thread is easily worn and causes the elbow to be corroded, this application provides a wear-resistant steel elbow

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0044] Preparation of diluent:

[0045] In parts by weight, 30 parts of methyl isobutyl ketone, 30 parts of xylene, and 20 parts of ethyl acetate were weighed and mixed uniformly to prepare a diluent.

Embodiment 1

[0048] A wear-resistant steel elbow, including an elbow body and a wear-resistant layer on the surface of the elbow body, is made of 304 stainless steel, and the wear-resistant layer is made of raw materials containing the following parts by weight:

[0049] 100 parts of fluorocarbon resin;

[0050] 15 parts of epoxy resin;

[0051] 8 parts of butyl acrylate;

[0052] 2 parts of styrene;

[0053] Phosphate 11 parts;

[0054] 70 parts of diluents made by Preparation Example 1;

[0055] 7 parts of silane coupling agent.

[0056] The preparation method of the wear-resistant steel elbow comprises the following steps:

[0057] S1, weigh the fluorocarbon resin, epoxy resin, and the diluent prepared in Preparation Example 1 according to the required weight of the formula, add them into a container equipped with a condenser tube and a stirrer, stir and heat to 120°C until the fluorocarbon resin, The epoxy resin is completely dissolved to obtain the bottom solution;

[0058] S2,...

Embodiment 2

[0063] A wear-resistant steel elbow, including an elbow body and a wear-resistant layer on the surface of the elbow body, is made of 304 stainless steel, and the wear-resistant layer is made of raw materials containing the following parts by weight:

[0064] 120 parts of fluorocarbon resin;

[0065]25 parts of epoxy resin;

[0066] 12 parts of butyl acrylate;

[0067] 6 parts of styrene;

[0068] Phosphate 36 parts;

[0069] 90 parts of diluents made by Preparation Example 1;

[0070] 12 parts of silane coupling agent.

[0071] The preparation method of the wear-resistant steel elbow comprises the following steps:

[0072] S1, weigh the fluorocarbon resin, epoxy resin, and the diluent prepared in Preparation Example 1 according to the required weight of the formula, add them into a container equipped with a condenser tube and a stirrer, stir and heat to 120°C until the fluorocarbon resin, The epoxy resin is completely dissolved to obtain the bottom solution;

[0073] S2...

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Abstract

The invention relates to the field of connecting pieces, in particular to a wear-resistant steel elbow. The wear-resistant steel elbow comprises an elbow body and a wear-resistant layer on the surface of the elbow body. The wear-resistant layer is prepared from the following raw materials in parts by weight: 100 to 120 parts of fluorocarbon resin, 15 to 25 parts of epoxy resin, 8 to 12 parts of butyl acrylate, 2 to 6 parts of styrene, 11 to 36 parts of phosphate ester, 70 to 90 parts of a diluent and 7 to 12 parts of a silane coupling agent. Due to the fact that a modified styrene-acrylic-fluorocarbon-epoxy grafted copolymer is obtained through phosphate grafted fluorocarbon resin, epoxy resin, butyl acrylate and styrene, the wear-resistant layer is not prone to being scratched off, and therefore, the elbow body is prevented from being corroded. Polypropylene glycol and the modified styrene-acrylic-fluorocarbon-epoxy graft copolymer are adopted for further grafting, so the wear resistance and toughness of the wear-resistant layer are improved. By adding plant ash, the water-resistant adhesiveness of the wear-resistant layer is improved.

Description

technical field [0001] This application relates to the field of pipeline connectors, more specifically, it relates to a wear-resistant steel elbow. Background technique [0002] In piping systems, elbows are pipe fittings that change the direction of the piping. The materials of elbows are usually cast iron, stainless steel, alloy steel, malleable cast iron, carbon steel, non-ferrous metals and plastics, etc. Among them, alloy steel has a wide range of applications due to its excellent mechanical strength. [0003] Alloy steel elbows are usually connected to pipes by direct welding, flange connection, hot-melt connection, electric fusion connection, threaded connection and socket connection. [0004] Stainless steel pipeline protection generally adopts an anti-corrosion coating system, including epoxy anti-corrosion and anti-rust primer and fluorocarbon weather-resistant top coat, which prolongs the service life of the pipeline through physical barrier. [0005] However, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/06C09D4/02C09D7/61C09D7/63C09D7/65C09D7/20
CPCC09D4/06C09D7/61C09D7/63C09D7/65C09D7/20
Inventor 杨月洁肖远池光文
Owner ZHEJIANG GOOD FITTINGS
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