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5. Environment
5.1 Environmental protection, fumes and effluents
Increasingly stringent anti-pollution regulations have prompted specialists to develop a range of solutions to improve the operation of hot-dip galvanizing plants (these problems do not exist for continuous galvanizing, because of the absence of flux, and degreasing and post-treatment solutions are obviously required).
The key issues to be resolved are, on the one hand, the neutralization of pickling and rinsing solutions (technically resolved to a satisfactory degree in modern workshops) and, on the other hand, fumes.
Fumes, though unpleasant and annoying, are not considered toxic, but we must try to reduce them as much as possible.
They occur when fluxed parts...
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Environment
Application and properties of galvanized products
Economic data
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Annual world zinc production is 9 Mt, of which more than 50% is devoted to steel production (growth of around 3% per year).
There are 550 continuous galvanizing lines worldwide, producing 70 Mt of coated steel.
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In Europe, automotive consumption will reach 8 Mt in 2005.
In Europe, 1.7 Mt/year...
Bibliography
- - Voir Recueils des Présentations aux Congrès Galvatech de 1989 (Tokyo), 1992 (Amsterdam), 1995 (Chicago), 1998 (Tokyo), 2001 (Bruxelles), 2004 (Chicago) et Intergalva : http://www.egga.com
- COUTSOURADIS (D.) -...
Theses
- - http://www.sudoc.abes.fr
- AMANI (S.) - Étude par électrochimie et par émission acoustique du décollement de couches de galvanisation sous protection cathodique - . Metz 2000.
- ...
Standardization
Tables A and B give the minimum weights and coating thicknesses according to NF EN ISO 1461, and the corrosion categories according to NF ISO 14713.
Organizations
Centre Français de l'Anticorrosion (CEFRACOR) : http://www.cefracor.org
European Galvanizers Association (EGGA) : http://www.egga.com
Galvazinc Association : http://www.galvazinc.com
...Manufacturers. Manufacturers
See the sites : http://www.galvazinc.frhttp://www.iza.comhttp://www.egga.com
Main zinc suppliers :
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