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Wear-resistant welded steel pipe and preparation process thereof

A technology of welding steel pipes and wear resistance, which is applied in the field of steel pipe processing, can solve the problems of steel pipe wall thickness reduction, shorten the service life of steel pipes, wear and tear, etc., and achieve the effect of improving wear resistance and enhancing adhesion

Active Publication Date: 2020-05-08
浙江万华不锈钢有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned existing technical solutions have the following defects: wear is one of the main forms of workpiece failure. During the use of the above-mentioned construction steel pipes, the surface of the steel pipes is easily lost due to wear, which reduces the wall thickness of the steel pipes, resulting in low performance and greatly Shorten the service life of steel pipes, so the current steel pipes still need to be improved

Method used

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  • Wear-resistant welded steel pipe and preparation process thereof
  • Wear-resistant welded steel pipe and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] refer to figure 1 , is a preparation process of a wear-resistant welded steel pipe disclosed by the present invention, comprising the following steps:

[0046] S1. pretreatment; use trichlorotrifluoroethane that accounts for less than 4% of the total cleaning agent as the main component of the cleaning agent, and the rest is water to prepare the cleaning agent to clean the surface of the steel pipe;

[0047]S2. Preparation of wear-resistant coating; weigh required components, mix malein rosin, propylene alcohol and acetone, then add zinc oxide, stir and reflux at a constant temperature of 180°C for 5h, and then Add epoxy resin and compatibilizer, and react at a temperature of 135°C for 3 hours to obtain a mixture; lower the temperature to 55°C, and then add montmorillonite and 4-ethylphenylamine to Malay In the mixture of rosin, acrylic alcohol and epoxy resin, stir for 35 minutes; then add toluene diisocyanate, then raise the temperature to 115°C, react with zinc oxid...

Embodiment 2

[0052] refer to figure 1 , is a preparation process of a wear-resistant welded steel pipe disclosed by the present invention, comprising the following steps:

[0053] S1. pretreatment; use trichlorotrifluoroethane that accounts for less than 4% of the total cleaning agent as the main component of the cleaning agent, and the rest is water to prepare the cleaning agent to clean the surface of the steel pipe;

[0054] S2. Preparation of wear-resistant coating; weigh the required amount of components, mix maleic rosin, propylene alcohol and acetone, then add zinc oxide, stir and reflux at a constant temperature of 160 ° C for 4 hours, and then Add epoxy resin and compatibilizer, react at a temperature of 120°C for 2 hours to obtain a mixture; lower the temperature to 50°C, and then add the evenly mixed montmorillonite and 4-ethylphenylamine to the In the mixture of rosin, acryl alcohol and epoxy resin, stir for 30 minutes; then add toluene diisocyanate, then raise the temperature...

Embodiment 3

[0059] refer to figure 1 , is a preparation process of a wear-resistant welded steel pipe disclosed by the present invention, comprising the following steps:

[0060] S1. pretreatment; use trichlorotrifluoroethane that accounts for less than 4% of the total cleaning agent as the main component of the cleaning agent, and the rest is water to prepare the cleaning agent to clean the surface of the steel pipe;

[0061] S2. Preparation of wear-resistant coating; weigh the required amount of components, mix malein rosin, propylene alcohol and acetone, then add zinc oxide, stir and reflux at a constant temperature of 190 ° C for 6 hours, and then Add epoxy resin and compatibilizer, and react at a temperature of 140°C for 3 hours to obtain a mixture; lower the temperature to 60°C, and then add the evenly mixed montmorillonite and 4-ethylphenylamine to the In the mixture of rosin, acryl alcohol and epoxy resin, stir for 40 minutes; then add toluene diisocyanate, then raise the tempera...

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Abstract

The invention relates to the technical field of steel pipe machining, and discloses a wear-resistant welded steel pipe, the surface of the steel pipe is coated with a wear-resistant layer, and the wear-resistant layer comprises the following components in parts by weight: 60-80 parts of epoxy resin; 5 to 10 parts of maleated rosin; 4-8 parts of allyl alcohol; 0.5 to 1 part of zinc oxide; 6-8 partsof acetone; and 3-4 parts of chlorinated polyethylene. The wear-resistant welded steel pipe has the following advantages and effects: the maleated rosin and the allyl alcohol are subjected to polycondensation to form a cross-linked structure, and the polymer of the maleated rosin and the allyl alcohol with higher cross-linking degree is blended with the epoxy resin, so that a compact and stable cross-linked structure can be formed among the components, and the wear resistance of the epoxy resin is favorably improved; the chlorinated polyethylene is used for improving the compatibility among all the components; the chlorinated polyethylene is low in molecular weight, steric hindrance is prevented from being formed between resin, all the components can be evenly dispersed, the blend is evenly mixed accordingly, the chlorinated polyethylene can improve the adhesive force of the blend, and therefore the abrasion resistance of the wear-resistant layer can be improved, and the physical andmechanical properties can be improved.

Description

technical field [0001] The invention relates to the technical field of steel pipe processing, in particular to a wear-resistant welded steel pipe and a preparation process thereof. Background technique [0002] With the rapid development of national economic construction and the gradual improvement of urban infrastructure, the demand for various types of steel is increasing, and stainless steel pipes are widely used in industrial production, urban construction and other fields. Stainless steel pipes have a hollow cross-section and are widely used as pipes for conveying fluids, such as pipes for conveying oil, natural gas, gas, water and certain solid materials. [0003] At present, the patent with the publication number CN105937676A discloses a steel pipe for construction, including: a steel pipe body, a first anti-seismic strengthening layer, a first noise-absorbing layer, a second anti-seismic strengthening layer and a second noise-absorbing layer. The outer surface of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D7/61C09D7/63C09D7/65
CPCC09D163/00C09D7/61C09D7/70C09D7/63C09D7/65C08L2205/03C08L2203/18C08L2205/08C08L35/00C08L23/286C08K13/04C08K7/00C08K3/40C08K3/346C08K5/29C08K5/18
Inventor 朱良才王成文
Owner 浙江万华不锈钢有限公司
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