Chromium-free, fingerprint-resistant electrogalvanized steel sheet is made by coating a layer of chromium-free organic coating that meets environmental protection requirements on the basis of electrogalvanized steel sheet. This kind of steel sheet not only inherits the good corrosion resistance and decorative properties of electrogalvanized steel sheet, but also has excellent fingerprint resistance, while avoiding the environmental problems that may be caused by traditional chromium-containing coatings.
Features
Environmental protection: Chromium-free, fingerprint-resistant electrogalvanized steel sheet does not contain harmful elements such as hexavalent chromium, meets the requirements of environmental protection regulations, and reduces pollution to the environment.
Fingerprint resistance: The chromium-free organic coating coated on the surface can effectively prevent the adhesion of stains such as fingerprints, and keep the surface of the steel sheet clean and beautiful.
Corrosion resistance: The chromium-free coating and the electrogalvanized layer work together to improve the corrosion resistance of the steel sheet and extend its service life.
Processing performance: Chromium-free, fingerprint-resistant electrogalvanized steel sheet has good processing performance, such as stamping, shearing, bending, etc., and the surface can still remain flat after processing.
Decorative: The specially treated coating can adjust the color according to customer needs, so that the steel sheet has a better decorative effect.
Production process
The production process of chrome-free fingerprint-resistant electrogalvanized steel sheet mainly includes the following steps:
Electrogalvanizing treatment: A layer of pure zinc or zinc-nickel alloy coating is formed on the surface of the steel sheet by electroplating.
Chromium-free passivation treatment: A chrome-free passivation treatment is performed on the surface of the coating to improve the corrosion resistance and fingerprint resistance of the coating.
Coating chrome-free organic coating: A layer of chrome-free organic coating is applied on the surface of the passivated coating to form a composite coating.
Drying and curing: The coated steel sheet is dried to cure the coating and meet the required performance requirements.
Application field
Chromium-free fingerprint-resistant electrogalvanized steel sheet is widely used in home appliances, electronics, construction and other fields. Especially in the inner and outer panels of home appliances, computer cases, office equipment, micromotors and other components, due to its excellent fingerprint resistance and corrosion resistance, it has become the preferred material for users.
Precautions
Although chrome-free, fingerprint-resistant electrogalvanized steel sheets have many advantages, the following points should still be noted during use:
Avoid scratches. During use, the surface of the steel sheet should be prevented from being scratched or hit to avoid affecting its beauty and corrosion resistance.
Proper storage: The steel sheet should be stored in a dry, ventilated environment without corrosive gases, and avoid long-term exposure to humid or corrosive environments.
