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

Detection liquid for detecting corrosion resistance of surface passivation film of tinned steel plate

A technology of tin-plated steel plate and passivation film, which is applied in the direction of weather resistance/light resistance/corrosion resistance, measuring device, instrument, etc., which can solve the problems of long test time, inconvenient quality management of tin-plated steel plate, and no effective method.

Active Publication Date: 2014-10-29
ORG TECH CO LTD
View PDF5 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no effective method for the research and evaluation of the corrosion resistance of the passivation film on the surface of the tin-plated steel sheet, and there is no quick and effective means to judge the corrosion resistance of the passivation film. The quality management in the
Although electrochemical methods have been used in the field of material corrosion and protection to study the properties of passivation films on the surface of materials, due to expensive instruments, long test time, complicated use processes, etc., electrochemical methods have not yet been able to achieve electrochemical methods on the surface of tin-plated steel sheets. Rapid on-line detection and evaluation of corrosion resistance of passivation film

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
  • Detection liquid for detecting corrosion resistance of surface passivation film of tinned steel plate
  • Detection liquid for detecting corrosion resistance of surface passivation film of tinned steel plate
  • Detection liquid for detecting corrosion resistance of surface passivation film of tinned steel plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1 One kind detects the corrosion resistance of tinned steel plate surface passivation film

[0037] 1. Detection solution formula

[0038] The formula and composition range of the detection solution of this embodiment

[0039] ingredients

parts by weight

[0040] Sulfuric acid (mineral acid)

0.1

Citric acid (organic acid)

0.1

Ferric chloride (oxidant)

0.1

Potassium ferricyanide (complexing agent)

0.05

water

99.65

[0041] Remarks: The concentration of sulfuric acid is 98wt%.

[0042] 2. Detection solution preparation process:

[0043] Dissolve the above-mentioned amount of sulfuric acid in water, then add the above-mentioned amount of citric acid, ferric chloride, and potassium ferricyanide in sequence, and stir evenly before use.

[0044] 3. Use the detection solution to detect the corrosion resistance of the tinned steel sheet samples (sample 1-3) with passivation film ...

Embodiment 2

[0054] Embodiment 2 One kind detects the corrosion resistance of the passive film on the surface of tin-plated steel plate

[0055] 1. Detection solution formula

[0056] The formula and composition range of the detection solution of this embodiment

[0057]

[0058] Remarks: the concentration of sulfuric acid is 98wt%

[0059] 2. Detection solution preparation process:

[0060] Dissolve the above-mentioned amount of sulfuric acid in water, then add the above-mentioned amount of lactic acid, copper chloride, potassium ferricyanide, and sodium thiosulfate into the solution in sequence, stir and dissolve fully, then add the above-mentioned amount of fatty alcohol polyoxyethylene ether Sodium sulfate, and stir well, set aside.

[0061] 3. Use the detection solution to detect the corrosion resistance of tin-plated steel samples (sample 1-3) with passivation films on the surface from 3 manufacturers (such as Baosteel, Pacific Ocean, and Zhongyue), and the passivation films ar...

Embodiment 3

[0071] Embodiment 3 One kind detects the corrosion resistance of tinned steel plate surface passivation film

[0072] 1. Detection solution formula

[0073] The formula and composition range of the detection solution of this embodiment

[0074]

[0075] Remarks: the concentration of sulfuric acid is 98wt%; the concentration of hydrochloric acid is 36wt%.

[0076] 2. Detection solution preparation process:

[0077] Dissolve the above amount of sulfuric acid and hydrochloric acid in water, then add the above amount of glycolic acid, ferric chloride, potassium ferricyanide, and disodium ethylenediamine tetraacetate into the solution in sequence, stir and dissolve fully, and then add the calculated amount Fatty alcohol polyoxyethylene ether sodium sulfate and octylphenol polyoxyethylene ether, and stir well, set aside.

[0078] 3. use the detection solution to detect the corrosion resistance of the tin-plated steel sheet samples with passivation film on the surface from two ...

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
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides detection liquid for detecting the corrosion resistance of a surface passivation film of a tinned steel plate. The detection liquid comprises the following component in parts by total weight: 0.1-5 parts of inorganic acid, 0.01-5 parts of organic acid, 0.1-5 parts of an oxidant, 0.05-2.5 parts of a complexing agent and 82-100 parts of water, wherein the inorganic acid is one or more of hydrochloric acid, sulfuric acid, nitric acid and phosphoric acid; the organic acid is one or more of lactic acid, citric acid and glycolic acid; the oxidant is ferric trichloride and / or copper chloride; the complexing agent is potassium ferricyanide. The invention further provides a method for detecting the corrosion resistance of the surface passivation film of the tinned steel plate. According to the scheme provided by the invention, the intensity of the corrosion resistance of the surface passivation film of the tinned steel plate can be intuitively and accurately evaluated according to the color change of the detection liquid dropwise added onto the surface passivation film of the tinned steel plate and / or the change of state of corrosion points on the surface passivation film.

Description

technical field [0001] The invention belongs to the development and application of a method for judging the corrosion resistance of a passivation film on a surface of a material, and relates to a detection solution for detecting the corrosion resistance of a passivation film on a tinned steel plate surface. Background technique [0002] Tin-plated steel (commonly known as tinplate) packaging materials due to its good sealing, preservation, light-proof, firmness, unique metal decoration effect, and can provide good protection for food, beverages and other contents in terms of physical and chemical properties. Its performance determines its wide application in the field of packaging containers, especially in the field of food and beverage packaging containers. [0003] In the field of food and beverage production, in order to prolong the shelf life of products, the corrosion resistance of tinned steel sheets used for food and beverage packaging has high requirements, and the c...

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): G01N17/00
Inventor 赵宇晖黄巍宋伟伟李众
Owner ORG TECH CO LTD
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