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Rust removing and corrosion preventing method of structural steel

A type of steel and steel technology, which is applied in the field of rust removal and anticorrosion of section steel, can solve the problems of section steel rust return, etc., and achieve the effect of solving rust return, improving service life and simple process

Active Publication Date: 2019-06-25
WUXI GUANGXING DONGMAO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in the prior art, the present invention provides a method for derusting and anticorrosion of profiled steel, which solves the problem of returning rust after derusting the existing profiled steel, forms a dense oxide layer on the surface of the steel through electrolytic reaction, and effectively improves the service life

Method used

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  • Rust removing and corrosion preventing method of structural steel
  • Rust removing and corrosion preventing method of structural steel

Examples

Experimental program
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Effect test

Embodiment 1

[0034] A method for rust removal and anticorrosion of section steel, comprising the steps of:

[0035] Step 1, remove the dross and large rust spots on the steel surface, and use fine gauze to rub;

[0036] Step 2, evenly coat the penetrating liquid on the surface of the steel, and then soak the steel in the acid solution for 10 minutes;

[0037] Step 3, take out the soaked acid solution, rinse it with a high-pressure water gun, dry and straighten it to obtain steel with a clean surface;

[0038] Step 4, add benzoyl peroxide to methanol for wetting, then add ethyl cellulose and stir evenly to form the first slurry; add graphene to water and stir evenly, add hydroxyethyl cellulose, and stir to form the first slurry Two slurry;

[0039] Step 5, uniformly coating the first slurry and the second slurry on the surface of the steel in sequence to form an oxide layer and a conductive layer, and drying at a constant temperature to obtain the coated steel;

[0040] Step 6: Apply a v...

Embodiment 2

[0051] A method for rust removal and anticorrosion of section steel, comprising the steps of:

[0052] Step 1, remove the dross and large rust spots on the steel surface, and use fine gauze to rub;

[0053] Step 2, evenly coat the penetrating liquid on the surface of the steel, and then soak the steel in the acid solution for 20 minutes;

[0054]Step 3, take out the soaked acid solution, rinse it with a high-pressure water gun, dry and straighten it to obtain steel with a clean surface;

[0055] Step 4, add benzoyl peroxide to methanol for wetting, then add ethyl cellulose and stir evenly to form the first slurry; add graphene to water and stir evenly, add hydroxyethyl cellulose, and stir to form the first slurry Two slurry;

[0056] Step 5, uniformly coating the first slurry and the second slurry on the surface of the steel in sequence to form an oxide layer and a conductive layer, and drying at a constant temperature to obtain the coated steel;

[0057] Step 6: Apply a vo...

Embodiment 3

[0068] A method for rust removal and anticorrosion of section steel, comprising the steps of:

[0069] Step 1, remove the dross and large rust spots on the steel surface, and use fine gauze to rub;

[0070] Step 2, evenly coat the penetrating liquid on the surface of the steel, and then soak the steel in the acid solution for 15 minutes;

[0071] Step 3, take out the soaked acid solution, rinse it with a high-pressure water gun, dry and straighten it to obtain steel with a clean surface;

[0072] Step 4, add benzoyl peroxide to methanol for wetting, then add ethyl cellulose and stir evenly to form the first slurry; add graphene to water and stir evenly, add hydroxyethyl cellulose, and stir to form the first slurry Two slurry;

[0073] Step 5, uniformly coating the first slurry and the second slurry on the surface of the steel in sequence to form an oxide layer and a conductive layer, and drying at a constant temperature to obtain the coated steel;

[0074] Step 6: Apply a v...

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PUM

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Abstract

The invention discloses a rust removing and corrosion preventing method of a structural steel. The method comprises the following steps: 1, removing dregs and big rusty spots on the surface of the steel; and rubbing through a fine gauze; 2, uniformly coating the surface of the steel with permeating liquid; and soaking the steel in acid liquid for 10-20min; 3, removing from the acid liquid after soaking; flushing through a high-temperature water gun; and drying and straightening to obtain the steel with clean surface; 4, adding benzoyl peroxide to methyl alcohol for moisturizing; adding ethyecellulose, and uniformly stirring to obtain first slurry; adding graphene to water; uniformly stirring; adding hydroxyethyl cellulose; and stirring to obtain second slurry; 5, sequentially uniformly coating the surface of the steel with the first slurry and the second slurry to form an oxidation layer and a conductive layer; and drying under constant temperature to obtain coated steel; and 6, applying voltage between the conductive layer and inner steel layer; reacting for 1-2h; performing coating permeating and high-pressure flushing after reaction; and drying to obtain the corrosion-preventivestructural steel.

Description

technical field [0001] The invention belongs to the technical field of section steel, and in particular relates to a method for removing rust and anticorrosion of section steel. Background technique [0002] At present, the production masterbatch of ring gear steel for automobile engine is straight round steel produced by steel mills, and the production process includes three processes: continuous rolling, heat treatment and joint drawing. The continuous rolling adopts five continuous rolling, and the base material is round rolled into a flat square coil. The continuous rolling includes the following steps: opening, on-line polishing, first rolling, second rolling, diamond-shaped hole setting, third rolling, fourth rolling, fifth rolling, and winding; The good steel is put into the opening machine, and the bent steel is stretched to ensure the straightened structure of the steel; the online polishing removes the oxides on the surface of the steel to expose the steel surface...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F15/00C23G1/08
Inventor 李沈翼李健
Owner WUXI GUANGXING DONGMAO TECH CO LTD