Solution used for dissolution heat galvanizing alloyed steel plate surface chromates conversion film

A chromate and conversion coating technology, applied in the field of detection, can solve problems such as poor reproducibility and large error in detection results, and achieve the effects of reducing errors, improving accuracy, and inhibiting corrosion reactions

Inactive Publication Date: 2008-01-02
ANGANG STEEL CO LTD
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the detection process, it was found that when the chromate conversion coating was dissolved, elements such as zinc on the substrate were also dissolved one after another, and the potential potential of these elements was different from that of chromium. φ Cr 6 + / Cr 3 + θ = + 1.33 , so hexavalent chromium pole Reduction reactions are prone to occur, resulting in large errors in test results and poor reproducibility

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
  • Solution used for dissolution heat galvanizing alloyed steel plate surface chromates conversion film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] ① Take 0.01% buffer (potassium hydroxide) 60ml;

[0011] ② Take 0.5% corrosion inhibitor (sodium silicate) and add it to the solution ①;

[0012] After the solution is shaken evenly, it can be made into a solution for dissolving the chromate conversion coating on the hot-dip Zn-Al alloy steel sheet.

Embodiment 2

[0014] ① Take 60ml of 0.8% buffer (sodium hydroxide);

[0015] ② Take 0.3 grams of corrosion inhibitor (sodium molybdate) and add it to the solution ① to make a solution ②;

[0016] ③ Take 0.3 grams of corrosion inhibitor (sodium silicate) and add it to the solution ②;

[0017] The solution can be prepared into a solution for dissolving the chromate conversion coating on the hot-dip Zn-Al-Mg alloy steel plate after being shaken evenly.

Embodiment 3

[0019] ① Take 60ml of 0.03% buffer (sodium hydroxide);

[0020] ② Take 0.05 g of corrosion inhibitor (sodium fluorosilicate) and add it to the solution ① to make a solution ②;

[0021] ③ Take 0.5 grams of corrosion inhibitor (sodium silicate) and add it to the solution ②;

[0022] The solution can be prepared into a solution for dissolving the chromate conversion coating on the hot-dip Zn-Al-Mg alloy steel plate after being shaken evenly.

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 provides a solution for dissolving chromate transformation film on surface of hot galvanizing alloy steel sheet. The solute of the solution includes (mass percent): alkality buffer agent: 0.01%-1%, alkality inhibitor: 0.01%-1%, the dissolvent is distilled water. The alkality buffer agent includes one of the acid sodium phosphate, superalkali, caustic potash, soda. Said alkality inhibitor is one or more of zinc alkality inhibitor, aluminium alkality inhibitor or magnesium alkality inhibitor. Said zinc alkality inhibitor includes one of hexamethylenetetramine, liquid glass, sodium dodecylbenzene sulfonate and dodecylsulfate; aluminium alkality inhibitor includes one of the gelatine, amylaceum, prodan, Senegal, sodium silicate; magnesium alkality inhibitor includes one of the prodan, kalii permangana, sodium molybdate, fluor oligosol. The invention resolves deacidizing problem generated during dissolution course of hexavalent chromium, and increases accuracy of result, decreases error of detection for 90% or above, it possesses higher economic profit and social benefit.

Description

technical field [0001] The invention belongs to detection technology, in particular to a solution for dissolving a chromate conversion film on the surface of a hot-dip galvanized alloy steel plate. Background technique [0002] The galvanized layer has a good protective effect on steel products. For steel plates, steel wires, section steel, utensils, castings, fasteners, etc., galvanized is used for corrosion protection. The zinc consumption of galvanized accounts for about 50% of the zinc production. . In order to save zinc resources, at the same time, in order to improve the resistance of hot-dip galvanized steel sheets to harsh corrosion conditions (such as marine atmospheric corrosion), the oxidation resistance at high temperatures (up and down the melting point of zinc), and the hot-dip galvanized products in forming, welding and coating, etc. The performance has been better improved, and people have successfully developed a series of hot-dip galvanized alloy products ...

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): G01N1/28G01N21/17
Inventor 陈义庆徐承明敖列哥徐小连于媛君肖宇翟博
Owner ANGANG STEEL CO LTD
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