Alkaline steel rust remover and preparation method thereof

A rust remover, steel technology, applied in the field of metal surface treatment, can solve the problems of easy corrosion of steel substrates, serious dust pollution, damage to the health of workers, etc., to achieve environmental and human friendliness, simple production process, rust removal effect Good results

Inactive Publication Date: 2019-12-17
广东中联邦精细化工有限公司
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mechanical method is to grind and remove rust through electromechanical equipment. Not only the rust removal effect is poor, there are dead corners (such as corners and depressions of steel products), but also the noise is loud and the dust pollution is serious
The chemical method is to remove rust through pickling operation. Although the rust removal effect is good, the sulfuric acid, hydrochloric acid and nitric acid used are highly corrosive. The health of the workers, in addition, there is a potential danger of "hydrogen embrittlement"
Scholars at home and abroad try to solve various problems in the acid rust removal process by adding corrosion inhibitors and smoke inhibitors to the acid. Although it has certain effects, it still cannot fundamentally eliminate the corrosion and hydrogen embrittlement caused by the acid. , acid mist and other issues
It can be seen that traditional rust removers can no longer meet the needs of sustainable development of the steel industry, and it is imperative to develop new and efficient rust removers

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Alkaline steel rust remover and preparation method thereof
  • Alkaline steel rust remover and preparation method thereof
  • Alkaline steel rust remover and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A kind of alkaline iron and steel derusting agent, its composition is as shown in the following table:

[0045] The composition table of a kind of alkaline iron and steel derusting agent of table 1

[0046] raw material Mass percentage (%) Potassium hydroxide 3 Triethanolamine 0.8 Ethylenediaminetetraacetic acid 0.5 Hydroxyethylenephosphonic acid 1 sodium benzoate 0.3 Thiourea 0.5 Tannic acid 0.2 NP-10 1.2 Silicone defoamer 0.03 carboxymethyl cellulose 0.08 Deionized water margin

[0047] The preparation method of above-mentioned alkaline iron and steel derusting agent, comprises the following steps:

[0048] 1) Add potassium hydroxide and deionized water to the reaction kettle, and stir for 15 minutes;

[0049] 2) Add triethanolamine, ethylenediaminetetraacetic acid, hydroxyethylene phosphonic acid, sodium benzoate, thiourea and tannic acid into the reaction kettle, and stir for 15 minut...

Embodiment 2

[0053] A kind of alkaline iron and steel derusting agent, its composition is as shown in the following table:

[0054] The composition table of a kind of alkaline iron and steel derusting agent of table 2

[0055]

[0056]

[0057] The preparation method of above-mentioned alkaline iron and steel derusting agent, comprises the following steps:

[0058] 1) Add potassium hydroxide and deionized water to the reaction kettle, and stir for 15 minutes;

[0059] 2) Add triethanolamine, sodium tripolyphosphate, hydroxyethylene phosphonic acid, sodium benzoate, thiourea and tannic acid into the reaction kettle, and stir for 15 minutes;

[0060] 3) Add NP-10 and polyether defoamer into the reactor, and stir for 15 minutes;

[0061] 4) Add carboxymethyl cellulose into the reaction kettle and stir for 15 minutes to obtain a basic iron and steel rust remover.

Embodiment 3

[0063] A kind of alkaline iron and steel derusting agent, its composition is as shown in the following table:

[0064] The composition table of a kind of basic iron and steel derusting agent of table 3

[0065]

[0066]

[0067] The preparation method of above-mentioned alkaline iron and steel derusting agent, comprises the following steps:

[0068] 1) Add sodium hydroxide and deionized water to the reaction kettle, and stir for 15 minutes;

[0069] 2) Add triethanolamine, sodium tripolyphosphate, ethylenediaminetetraacetic acid, hydroxyethylene phosphonic acid, sodium benzoate, thiourea and tannic acid into the reaction kettle, and stir for 15 minutes;

[0070] 3) Add NP-10 and silicone defoamer into the reaction kettle, and stir for 15 minutes;

[0071] 4) Add carboxymethyl cellulose into the reaction kettle and stir for 15 minutes to obtain a basic iron and steel rust remover.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an alkaline steel rust remover and a preparation method thereof. The alkaline steel rust remover is prepared from the following components of, in percentage by mass, 0.1%-8% ofan alkali agent, 0.01%-5% of a complexing agent, 0.01%-3% of a corrosion inhibitor, 0.1%-3% of an emulsifier, 0.01%-0.05% of a defoaming agent, 0.02%-1% of a thickening agent and the balance water. The preparation method of the alkaline steel rust remover is very simple, and the components are mixed uniformly in batches; and the rust removal effect of the alkaline steel rust remover is good, steel is not corroded, acid mist is not generated, the hydrogen embrittlement phenomenon does not occur, the production process is simple, and safety and environmental protection are achieved.

Description

technical field [0001] The invention relates to an alkaline iron and steel derusting agent and a preparation method thereof, belonging to the technical field of metal surface treatment. Background technique [0002] Steel products widely used in all walks of life are easily rusted in the atmospheric environment, which will affect their performance and bring huge losses to enterprises and society. Therefore, it is very necessary to carry out rust removal and anticorrosion treatment on the surface of steel products. Rust removal is the basic process of anticorrosion of steel products, which will directly affect the subsequent passivation antirust effect. [0003] At present, the commonly used rust removal methods mainly include mechanical and chemical methods. The mechanical method is to grind and remove rust through electromechanical equipment, which not only has poor rust removal effect and has dead corners (such as corners and depressions of steel products), but also has ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C23G5/06
CPCC23G5/06
Inventor 王梅玲周青烽张礼林刘斌
Owner 广东中联邦精细化工有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap