4. Second transformation
Given the relatively low melting point of zinc and its common alloys, two main types of processing can be distinguished: cold processing, where the product is at a temperature close to room temperature (10 to 30°C), and hot or warm processing, where the product temperature is above 100°C, either before deformation or as a result of heating due to high-speed forming.
4.1 Second hot transformation
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Reverse impact extrusion is widely used around the world to...
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Second transformation
Conclusion
Economic data
The world market for rolled products for the building industry (around 90% of total consumption) is around 300,000 t/year, with annual growth of 2%. Production and consumption vary widely from one country to another, depending above all on the traditions inherited from the previous two centuries.
Western Europe is largely dominant, but there is strong growth in consumption in new markets, notably...
Bibliography
References
Standardization
Association française de normalisation AFNOR
- Coverage – Metal – Shaped metal strips – Specifications - NF P 34-402 - 08 1987
- Coverage – Metal – Metal joint covers – Specifications - NF P 34-403 - 08 1987
- Rainwater drainage – Metal gutters, brackets and caissons – Specifications - NF P 36-402...
Organizations
France
Chambre syndicale du zinc et du cadmium (Fédération des chambres syndicales des minerais, minéraux industriels et métaux non ferreux) http://www.mineraux-et-metaux.org/fr/chambres/
Germany
Semi-finished product producers
Grillo Werke AG http://www.grillo.de/egrillo/fmag.htm
Jarden Zinc Products http://allzinc.com
Nedzink BV http://www.nedzink.nl/
...
Specifications. Regulations. Specifications
Center Scientifique et Technique du Bâtiment CSTB
NF P 34-211 09 2004
- Building work – Zinc sheet and long sheet metal roofs – Part 1 – technical specifications – Part 2: specifications. - DTU 40.41 -
P 36-201...
Manufacturers
Hazelett Strip-Casting Corporation http://www.hazelett.com
Continuus S.p.A. http://www.properzi.com/contacts.ctr
SMS Demag AG http://www.sms-demag.com/
...
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