Silicate antirust liquid

A technology of anti-rust liquid and silicate, which is applied in the coating process of metal materials, etc., can solve problems such as harmful to health, release of aromatic hydrocarbons, accumulation of heavy metals, etc., and achieve low production cost, low cost of anti-rust, and excellent product performance Effect

Inactive Publication Date: 2010-10-13
KUNMING UNIV OF SCI & TECH
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, due to environmental restrictions, many oil-soluble antirust agents commonly used in the past have been restricted in use, such as barium sulfonate, which has a better antirust effect on ferrous metals, etc. Barium ions are heavy metal ions, and long-term discharge in the environment will cause heavy metals to accumulate. vicious events, so countries all over the world are promoting new additives that do not contain barium or even sulfonate
[0005] The current anti-rust oils in our country basically use gasoline, kerosene or machine oil as solvents, and they are all products of oil fractionation. At present, because the aromatic hydrocarbons contained in oil cannot be extracted, gasoline, kerosene and machine oil All oils contain aromatic hydrocarbons. Using gasoline and kerosene as solvent oil has a low flash point and is easy to catch fire. Second, it pollutes the environment and is harmful to human health.

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
  • Silicate antirust liquid
  • Silicate antirust liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: the composition of this iron and steel parts antirust liquid is sodium silicate 10g / L, H 2 o 2 10ml / L, NaNO 3 10g / L, Zn(NO 3 ) 2 25g / L, H 2 SO 4 4ml / L, the rest is H 2 O, the pH value is 3.0.

[0016] The antirust solution is used for silicate antirust treatment on steel plates that need antirust treatment. After the steel plate is subjected to pre-treatments such as derusting and degreasing before electroplating, the parts are taken out and cleaned, and then put into the steel plate by HNO 3 2ml / L and H 2 Stay in the light-emitting solution composed of O for 5 seconds, take out the parts and clean them with water, then soak them in this anti-rust solution at room temperature for 25 seconds, and finally clean the parts and dry the surface moisture of the parts with a hair dryer.

[0017] The appearance of the steel plate treated with this anti-rust solution is uniform and has a metallic luster, and the red rust time exceeds 80 hours through the ne...

Embodiment 2

[0018] Embodiment 2: the composition of this antirust liquid is potassium silicate 15g / L, H 2 o 2 10ml / L, NaNO 3 15g / L, Zn(NO 3 ) 2 30g / L, H 2 SO 4 3ml / L, the rest is H 2 O, the pH value is 2.0.

[0019] The antirust solution is used for antirust treatment of certain engine blades. After the blades are pre-treated (rust removal, oil removal), they are taken out and cleaned with water, and then put into the 3 3ml / L and H 2 Stay in the light-emitting solution composed of O for 6 seconds, take out the parts and clean them with water, then soak them in this anti-rust solution at room temperature for 15 seconds, and finally clean the parts and dry the surface moisture of the parts with a hair dryer.

[0020] The engine blades treated with this anti-rust solution have uniform appearance and metallic luster, and the red rust time exceeds 70 hours in the neutral salt spray test, which greatly exceeds the corrosion resistance of the existing treatment process.

Embodiment 3

[0021] Embodiment 3: the composition of this antirust liquid is sodium silicate 20g / L, H 2 o 2 15ml / L, NaNO 3 10g / L, Zn(NO 3 ) 2 40g / L, H 2 SO 4 8ml / L, the rest is H 2 O, the pH value is 1.5.

[0022] The anti-rust liquid is used for anti-rust treatment of the steel casing of a certain machine. The steel casing is cleaned with water after pre-treatment (rust removal, oil removal), and then put into the HNO 3 5ml / L and H 2 Stay in the light-emitting solution composed of O for 3 seconds, take out the parts and clean them with water, then soak them in this anti-rust solution at room temperature for 15 seconds, and finally clean the steel casing and dry the surface moisture of the parts with a hair dryer.

[0023] The steel casing treated with this anti-rust solution has a uniform appearance and a metallic luster, and the red rust time exceeds 50 hours after the neutral salt spray test.

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 a silicate antirust liquid. The antirust liquid consists of the following components: 5g/L to 20g/L of silicate, 5ml/L to 20ml/L of H2O2, 8g/L to 20g/L of NaNO3, 25g/L to 45g/L of Zn(NO3)2, 3ml/L to 15ml/L of H2SO4 and the balance of H2O; and in the process of preparation, after all the components in the antirust liquid are completely dissolved, concentrated H2SO4 or NaOH solution is used for regulating the pH value to 1.5 to 3.0. The silicate is one or the combination of sodium silicate and potassium silicate. The silicate antirust liquid can be used as a temporary means of protection when antirust oil cannot be used in the process of the transportation of steel parts, dense protective films can be formed on the surfaces of the processed steel parts, and thereby the corrosion resistance of the steel parts can be enhanced. The invention can remarkably enhances the corrosion resistance of steel parts, so that the rust formation time in a salt fog test can reach more than 50 to 80 hours, which is far longer than the national standard. Since the antirust liquid does not contain barium and even sulphonate, the antirust liquid overcomes the defects of the barium salt processing technique, such as high toxicity and unenvironment-friendliness, and thereby the clean production of steel parts can be implemented in a post-processing process.

Description

technical field [0001] The invention relates to a silicate antirust liquid, which is mainly used as a temporary protection means when the antirust oil cannot be used during the transportation of iron and steel parts, and belongs to the technical field of surface treatment of iron and steel materials. Background technique [0002] Anti-rust oil is composed of oil-soluble corrosion inhibitor, base oil and auxiliary additives. According to performance and use, it can be divided into fingerprint removal type antirust oil, water dilution type antirust oil, solvent dilution type antirust oil, antirust and lubrication dual-purpose oil, sealed antirust oil, replacement type antirust oil, thin layer oil , antirust grease and vapor phase antirust oil, etc. Corrosion inhibitors commonly used in antirust oils are alkaline earth metal salts of fatty acids or naphthenic acids, lead naphthenate, zinc naphthenate, sodium petroleum sulfonate, barium petroleum sulfonate, calcium petroleum su...

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): C23C22/50
Inventor 张英杰董鹏章江洪宋凡子
Owner KUNMING UNIV OF SCI & TECH
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