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

Coating aluminum low-temperature phosphorizing liquid

A low-temperature phosphating and coating technology, which is applied in the coating process of metal materials, can solve the problems of low corrosion resistance and wear resistance of aluminum coils, and achieve energy saving, high corrosion resistance and wear resistance, and phosphorus The effect of shortening the time

Inactive Publication Date: 2017-12-12
江苏荣鑫铝业科技有限公司
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current phosphating solution generally contains toxic substances such as nitrite, and the corrosion resistance and wear resistance of aluminum coils after phosphating are not high.

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
  • Coating aluminum low-temperature phosphorizing liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Coating aluminum low-temperature phosphating solution, including 4 parts by weight of diethylene triamine pentamethylene phosphonic acid, 1 part of phytate, 150 parts of phosphoric acid, 38 parts of zinc oxide, 40 parts of nitric acid, 3 parts of nickel nitrate and 1900 parts of water; the preparation method of the phosphating solution is: dissolve 150 parts of phosphoric acid and 40 parts of nitric acid in 1900 parts of water and stir, and leave for 12 to 24 hours; Zinc oxide, fully stirred, cooled for 9-11 hours to obtain a mixed solution of phosphoric acid and zinc oxide; after fully mixing other ingredients in the formula, add it to the aforementioned mixed solution and fully stir. Wherein the preparation process of diethylenetriamine pentamethylene phosphonic acid is as follows: 1mol of diethylenetriamine and 5mol of phosphorous acid and 100ml of 36% hydrochloric acid and 100ml of water, stir after mixing, then heat up to 80°C, drop 5mol of formaldehyde, after the ...

Embodiment 2

[0017] The difference from Example 1 is: coating aluminum low-temperature phosphating solution, including 3 parts by weight of diethylenetriaminepentamethylenephosphonic acid, 0.7 parts of phytic acid ester, 120 parts of phosphoric acid, oxidation 32 parts of zinc, 20 parts of nitric acid, 1 part of nickel nitrate and 1400 parts of water; the preparation method of the phosphating solution is: 120 parts of phosphoric acid and 20 parts of nitric acid are dissolved in 1400 parts of water and then stirred.

Embodiment 3

[0019] The difference from Example 1 is that the low-temperature phosphating solution for coating aluminum includes 6 parts by weight of diethylenetriaminepentamethylenephosphonic acid, 2 parts of phytic acid ester, 160 parts of phosphoric acid, oxidized 48 parts of zinc, 40 parts of nitric acid, 6 parts of nickel nitrate and 2000 parts of water; the preparation method of the phosphating solution is: 160 parts of phosphoric acid and 40 parts of nitric acid are dissolved in 2000 parts of water and then stirred.

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

PropertyMeasurementUnit
film densityaaaaaaaaaa
Login to View More

Abstract

The invention discloses coating aluminum low-temperature phosphorizing liquid. The coating aluminum low-temperature phosphorizing liquid comprises 3-6 parts by weight of diethylene triamine penta(methylene phosphonic acid), 0.7-2 parts by weight of inositol hexaphosphate, 120-160 parts by weight of phosphoric acid, 32-48 parts by weight of zinc oxide, 20-40 parts by weight of nitric acid, 1-6 parts by weight of nickel nitrate, and 1400-2000 parts by weight of water. The phosphorizing liquid contains no poisonous substance, namely nitrite; phosphorized aluminum coils achieve better corrosion resistance and wear resistance; the phosphorizing temperature is low; the energy is saved; the phosphorizing time is short; the productivity is improved; and raw materials in the formula are simple to achieve, and control is easy in actual production.

Description

technical field [0001] The invention relates to a low-temperature phosphating solution for coating aluminum. Background technique [0002] Coated aluminum is also known as sprayed aluminum, coated aluminum coil, and sprayed aluminum coil. The preparation process is generally cleaning (removing a layer of lubricating oil, anti-oxidation grease and various dirt attached to the surface of the aluminum coil during rolling) → chemical formation (adding chemical raw materials to form an oxide film on the surface of the aluminum coil) → coating → baking bake. In the chemical formation process, phosphating is currently more used to form a phosphating film on the surface of aluminum coils. Phosphating at room temperature and low temperature has become a trend. There are mainly physical promotion methods, chemical promotion methods, and electrochemical promotion methods; physical promotion methods include immersion Phosphating and spray phosphating. Compared with the immersion oper...

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): C23C22/17
CPCC23C22/17
Inventor 赵龙才朱坤亮张仲明
Owner 江苏荣鑫铝业科技有限公司
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