Anti-corrosion machining process for steel framework

A technology of corrosion processing and steel structure, applied in hot-dip plating process, metal material coating process, coating, etc., can solve the problems of aging, hard to remove rust, high labor intensity, etc., and achieve good impact resistance and durability Corrosion, the effect of ensuring compactness

Inactive Publication Date: 2020-05-26
胡双大
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mechanical method consists of manual shoveling, grinding and sandblasting, which is labor-intensive and low-efficiency, and is limited by the shape of the component, and some rust is difficult to remove
The chemical method is generally to apply an oil coating on the outer surface of the steel structure, but there will also be aging phenomena

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A steel structure anti-corrosion processing technology is characterized in that it comprises the following steps:

[0024] Step 1, base surface treatment, grinding and chamfering all the sharp edges and R holes of the steel structure, and then using a rust remover to remove scale, rust and other pollutants, rinsing the surface with water, drying, and then using 100% steel Shot blasting for abrasive pellets;

[0025] Among them, the preparation of rust remover: add 0.3 parts of hexamethylenetetramine to 60 parts of water, stir at 55-60°C, 550-700rpm for 1.5h, add 15 parts of hydrochloric acid, stir at 55-60°C, 550-700rpm 0.5h, then add 1 part of polydimethylsiloxane, 2 parts of oleic acid, 0.1 part of tannic acid, 2 parts of potassium dihydrogen phosphate, 3 parts of iron ion adsorption aids, at 55-60 ° C, 550- Stir at 700rpm for 1.5h to obtain rust remover.

[0026] Step 2, galvanizing, the steel structure treated in step 1 is first pickled and then immersed in a zinc...

Embodiment 2

[0034] A steel structure anti-corrosion processing technology is characterized in that it comprises the following steps:

[0035] Step 1, base surface treatment, grinding and chamfering all the sharp edges and R holes of the steel structure, and then using a rust remover to remove scale, rust and other pollutants, rinsing the surface with water, drying, and then using 100% steel Shot blasting for abrasive pellets;

[0036] Among them, the preparation of rust remover: add 0.6 parts of hexamethylenetetramine to 90 parts of water, stir at 55-60°C, 550-700rpm for 2h, add 25 parts of hydrochloric acid, stir at 55-60°C, 550-700rpm for 1h , and then add 1.5 parts of polydimethylsiloxane, 5 parts of oleic acid, 0.3 parts of tannic acid, 5 parts of potassium dihydrogen phosphate, and 6 parts of iron ion adsorption aids in sequence, and stir at 55-60°C and 550-700rpm 2h, get rust remover.

[0037] Step 2, galvanizing, the steel structure treated in step 1 is first pickled and then dip...

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Abstract

The invention discloses an anti-corrosion machining process for a steel framework. The anti-corrosion machining process comprises the steps of basal plane treatment, galvanizing, sand sweeping, surface corrosion prevention and spraying. The anti-corrosion machining process has the advantages that rust stains of steel can be rapidly removed through the construction method due to the components andthe proportion of a rust remover and an anti-corrosion paint, and the steel has good impact resistance and corrosion resistance after being subjected to anti-corrosion treatment; and the compactness,stability, weather resistance, acid and alkali resistance and comprehensive corrosion resistance of the surface of the steel framework are guaranteed through a zinc coating and an epoxy anti-corrosionnanometer dry film.

Description

technical field [0001] The invention relates to the technical field of anti-corrosion construction, in particular to an anti-corrosion processing technology for steel structures. Background technique [0002] Steel frame engineering is a structure mainly made of steel, which is one of the main types of modern building structures. The annual steel production in the world exceeds 100 million tons, and the scrapped steel equipment due to corrosion is equivalent to about 30% of the annual production. How to improve the rust removal and anticorrosion construction technology of steel structures has become an urgent problem to be solved. The steel structure is exposed to the wild environment, and its surface is easily corroded by chemical and electrochemical interactions with the surrounding environment. Therefore, it is necessary to carry out anti-corrosion treatment on its surface to protect the steel frame body from corrosion. Steel frame buildings are generally large permanent...

Claims

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Application Information

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IPC IPC(8): C23G1/08C23C2/06C23C2/02C23G1/20C23C2/26B05D7/14B05D7/00B05D7/24
CPCB05D7/14B05D7/24B05D7/54B05D2504/00B05D2601/20B05D2601/28C23C2/02C23C2/06C23C2/26C23G1/088C23G1/20B05D2420/02
Inventor 胡双大
Owner 胡双大
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