Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Electrogalvanized steel plate and steel plate electrogalvanizing process

A technology of electro-galvanizing and steel plate, applied in the field of electro-galvanized steel plate and steel plate galvanizing process, can solve the problem of low hardness of galvanized layer, achieve the effect of changing the organizational structure, improving hardness, and increasing the hardness of the coating

Inactive Publication Date: 2007-01-03
BAOSHAN IRON & STEEL CO LTD
View PDF3 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hardness of its galvanized layer is still low

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Table 1 shows the implementation effects of several embodiments of the steel sheet galvanizing process of the present invention and the comparison with the comparative examples. The sample original plates in the examples and comparative examples are cold-rolled low-carbon steel plates after annealing treatment.

[0017] Before electrogalvanizing, the steel plates are degreased and rinsed with water, and then pickled at room temperature. The pickling solution is 50g / L sulfuric acid, and the pickling time is 3 seconds. After pickling, rinse with water. . Then enter the electrogalvanizing step, the electrogalvanizing process conditions of several embodiments are as follows:

[0018] Plating solution composition: ZnSO 4 ·7H 2 O(500g / L), H 2 SO 4 (15g / L), Sn 2+ (the concrete addition amount of each embodiment sees Table 1);

[0019] Plating solution temperature: 50°C;

[0020] Cathode current density during electroplating: 90A / dm 2 ;

[0021] Flow velocity of elect...

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 present invention is electrogalvanized steel plate and steel plate electrogalvanizing process. The electrogalvanized steel plate has electrogalvanized layer containing tin in 15-8000 ppm. The steel plate electrogalvanizing process includes the steps of defatting the steel plate, pickling treatment and electrogalvanizing, and features the electrogalvanizing solution containing Sn2+ in 1-500 ppm. Adding small amount of Sn2+ into the electrogalvanizing solution can alter the structure of the electrogalvanized layer and electrogalvanized layer containing tin in 15-8000 ppm has greatly raised, 2 times or higher raised, hardness.

Description

technical field [0001] The invention relates to a steel material and an electroplating process, in particular to an electro-galvanized steel plate and a steel plate galvanizing process. Background technique [0002] Electro-galvanized steel sheets are widely used in household appliances, automobiles and construction materials. As far as household appliances and automobiles, especially cars, have high requirements on the quality of materials, they are required to have high surface quality, high corrosion resistance, and good formability. Electrogalvanized steel sheets can better meet their requirements for material surface quality and corrosion resistance. However, the existing electrogalvanized steel sheets still have deficiencies, mainly due to the problems of the electroplating process, which makes the galvanized layer soft and difficult to form. Performance is poor. [0003] Some literature proposes to improve the quality of electrogalvanized steel sheets by adding addi...

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): C25D3/22C25D3/56
Inventor 温乃盟丁志强
Owner BAOSHAN IRON & 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
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