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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4.1.1 Spinning

Reverse impact extrusion is widely used around the world to...

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Second transformation

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page Foundry and primary processing

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

(1) - PARTRIDGE (P.G.) - Crystallography and deformation modes of hexagonal closed packed metals (Cristallographie et modes de déformation des métaux hexagonaux) - . Metallurgical Review (GB), 12, n° 118, p. 169. 94 bibl. (258 réf.) (1967).
(2) -...

Standardization

Association française de normalisation AFNOR

http://www.boutique.afnor.fr/

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

Zinkberatung e.V.