Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of pickling additive and preparation method thereof

A technology for pickling additives and reaction tanks, which is applied in the field of metal surface treatment, can solve the problems of reducing the speed of rust removal, volatile hydrochloric acid, and fast corrosion of the substrate, and achieves the effects of reducing dosage, reducing air pollution and weakening the effect of corrosion.

Active Publication Date: 2017-12-29
江门市三清环境技术工程有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most commonly used pickling solution is prepared by hydrochloric acid. Hydrochloric acid has the characteristics of fast derusting speed at room temperature and low cost. However, hydrochloric acid corrodes the substrate of metal workpieces quickly. Generally, it is necessary to add corrosion inhibitors. The use of corrosion inhibitors will be limited. Reduce the speed of rust removal to a certain extent, which is contradictory to the requirement of increasing the cleaning speed
At the same time, hydrochloric acid is easy to volatilize, and the acid mist is easy to corrode the equipment, so it is necessary to use an acid mist inhibitor

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
  • A kind of pickling additive and preparation method thereof
  • A kind of pickling additive and preparation method thereof
  • A kind of pickling additive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A novel pickling additive comprising the following components by weight ratio:

[0035]

[0036] The preparation method of pickling additive comprises the following steps:

[0037] (1) Add the required deionized water into the stainless steel reaction tank and heat to 50°C;

[0038] (2), add in the stainless steel reaction tank after fatty alcohol polyoxyethylene ether is dissolved;

[0039] (3), add in the stainless steel reaction tank after dissolving dimethyl silicone oil and fumed silica;

[0040] (4), after dissolving sodium chromate, thiourea, sodium tripolyphosphate, and dicyclohexylamine nitrite respectively, add in the stainless steel reaction tank in sequence;

[0041] (5) Add disodium edetate into the reaction tank after completely dissolving it in hot water at 50°C;

[0042] (6), sodium lauryl sulfate is added in the reaction tank after being dissolved in hot water at 100°C;

[0043] (7) Start the agitator and stir for 10 minutes before leaving the ta...

Embodiment 2

[0045] A novel pickling additive is characterized in that it comprises the following components by weight ratio:

[0046]

[0047] The preparation method of pickling additive comprises the following steps:

[0048] (1) Add the required deionized water into the stainless steel reaction tank and heat to 40°C;

[0049] (2), add in the stainless steel reaction tank after fatty alcohol polyoxyethylene ether is dissolved;

[0050] (3), add in the stainless steel reaction tank after dissolving dimethyl silicone oil and fumed silica;

[0051] (4), after dissolving sodium chromate, thiourea, sodium tripolyphosphate, and dicyclohexylamine nitrite respectively, add in the stainless steel reaction tank in sequence;

[0052] (5) Add disodium edetate into the reaction tank after completely dissolving it in hot water at 50°C;

[0053] (6), sodium lauryl sulfate is added in the reaction tank after being dissolved in hot water of 95°C;

[0054] (7) Start the agitator and stir for 10 min...

Embodiment 3

[0056] A novel pickling additive is characterized in that it comprises the following components by weight ratio:

[0057]

[0058] The preparation method of pickling additive comprises the following steps:

[0059] (1) Add the required deionized water into the stainless steel reaction tank and heat to 50°C;

[0060] (2), add in the stainless steel reaction tank after fatty alcohol polyoxyethylene ether is dissolved;

[0061] (3), add in the stainless steel reaction tank after dissolving dimethyl silicone oil and fumed silica;

[0062] (4), after dissolving sodium chromate, thiourea, sodium tripolyphosphate, and dicyclohexylamine nitrite respectively, add in the stainless steel reaction tank in sequence;

[0063] (5) Add disodium edetate into the reaction tank after completely dissolving it in hot water at 50°C;

[0064] (6), sodium lauryl sulfate is added in the reaction tank after being dissolved in hot water at 100°C;

[0065] (7) Start the agitator and stir for 10 mi...

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 relates to a novel pickling additive and a preparation method thereof. The pickling additive comprises the following components by weight ratio: 1-5% of fatty alcohol polyoxyethylene ether, 3-7% of sodium lauryl sulfate, Disodium edetate 1‑3%, simethicone 3‑7%, fumed silica 0.5‑3%, sodium chromate 2‑5%, thiourea 6‑10%, sodium tripolyphosphate (Na5P3O10) 7‑15%, dicyclohexylamine nitrite 5‑10%, deionized water 35‑70%. The pickling additive of the present invention can quickly remove the scale on the steel surface, form an adsorption protective film on the steel surface, effectively suppress the escape of hydrogen chloride gas (acid mist) in the pickling process, and improve the utilization rate of hydrochloric acid; Operating environment, reducing air pollution, has good environmental benefits, and helps enterprises to achieve clean production.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a novel pickling additive and a preparation method thereof. Background technique [0002] Metal plays a very important role in modern industrial and agricultural production and economic life, but during its use, metal will suffer from different forms of damage due to the influence of the surrounding environment, the most common of which is rust. Pickling and rust removal is an essential process, which is to immerse the processed metal workpiece in acid solutions such as nitric acid, sulfuric acid, hydrochloric acid, phosphoric acid, etc., to dissolve the rust attached to the metal surface. The most commonly used pickling solution is prepared by hydrochloric acid. Hydrochloric acid has the characteristics of fast derusting speed at room temperature and low cost. However, hydrochloric acid corrodes the substrate of metal workpieces quickly. Generally, it is necessar...

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
IPC IPC(8): C23G1/04
Inventor 徐小明
Owner 江门市三清环境技术工程有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com