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4. Gravity die-casting and casting of zinc alloys
Zamak alloys were developed to be particularly suitable for die-casting, and it is in this mode of processing that they offer the greatest advantages.
Although it is possible to cast them by gravity in sand or metal shell molds, this technique presents a number of difficulties and, if the caster does not master all the casting parameters perfectly, the results can be disappointing. This explains the relatively modest development of gravity-cast zinc alloys in recent years.
To fill this gap, the International Lead And Zinc Research Organization (ILZRO) has studied and developed a new family of zinc-based alloys: ZA 8, ZA 12 and ZA 27.
The ZA 12, which appeared on the French market in 1970 under the name Ilzro 12, has developed exclusively in the field of gravity molding.
On the contrary, the...
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Gravity die-casting and casting of zinc alloys
Bibliography
References
Standardization
Association Française de Normalisation (AFNOR): http://www.boutique.afnor.fr
- Produits de fonderie. Alliages d'aluminium et alliages de zinc. Tolérances dimensionnelles des pièces moulées sous pression. (A 66-002). - NF A 66-002 - 09-85
- Revêtements métalliques. Conditions de réception des pièces en alliages de zinc nickelées et chromées. (A 91-103). - A 91-103 - 11-69
- Dessins techniques. Cotation et...
Manufacturers and suppliers (non-exhaustive list)
Directory of suppliers of foundry materials and products
(Centre technique des industries de la fonderie CTIF): http://www.cetif.com
Organizations
Center technique des industries de la fonderie CTIF http://www.ctif.com .
Association zinc fonderie http://www.zinc-fonderie.asso.fr .
Syndicat général des fondeurs de France. http://www.fondeursdefrance.org...
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