Aluminum alloy semisolid strip casting using an unequal diameter twin roll caster

• Autorzy: Haga T. , Sakaguchi H. , Inui H. , Watari H. , Kumai S.
• Języki publikacji: EN

Abstrakty

EN

Purpose: A Purpose of the present study was to break through the disadvantage of the twin roll caster for aluminum alloy. They were slow casting speed and limitation of alloy. For example, the casting speed was slower than 5 m/min, and casting of hypereutectic Al-Si alloy was difficult. In order to break through the disadvantages, semisolid casting using an unequal diameter twin roll caster was tested its ability. Design/methodology/approach: The specification of the unequal diameter twin roll caster is as below. The diameter of the upper roll was 250 mm, and that of the lower roll was 1000 mm. The width of the roll was 100 mm. The semisolid slurry was made by a cooling slope. Findings: The microstructure of the strip became very fine. Especially, primary and eutectic Si became very fine. This was the effect of rapid solidification. As the result, the ductility of Al-16%Si was improved. Research limitations/implications: 6111 aluminum alloy strip was cast at speeds of 5, 10 and 20 m/min. This caster could cast the strip at the speeds higher than the conventional twin roll caster. Start of casting was very easy. The hypereutectic Al-16%Si alloy, which has wide freezing zone, could be cast in to the strip by the unequal diameter twin roll caster. This was the effect of the cooling of the strip on the lower roll. Originality/value: The roll cast Al-16mass%Si strip had good ductility, and could be cold rolled. Annealed 0.5 mm thick Al-16mass%Si could be bent at radius of 0.75mm.

Słowa kluczowe

EN

casting; strip caster; hypereutectic Al-Si; sheet metal; unequal diameter twin roll caster

PL

odlewnictwo; odlewanie taśmy; stop nadeutektyczny Al-Si; blacha

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2006
• Tom: Vol. 14, nr 1-2
• Strony: 157--162
• Opis fizyczny: Bibliogr. 14 poz., rys., tab., wykr.

Twórcy

autor

Haga T.

• Department of Mechanical Engineering, Osaka Institute of Technology, 5-15-1, Omiya, Asahiku, Osaka city 535-8585, Japan

autor

Sakaguchi H.

• Department of Mechanical Engineering, Osaka Institute of Technology, 5-15-1, Omiya, Asahiku, Osaka city 535-8585, Japan

autor

Inui H.

• Department of Mechanical Engineering, Osaka Institute of Technology, 5-15-1, Omiya, Asahiku, Osaka city 535-8585, Japan

autor

Watari H.

• Oyama National College of Technology, Oyama city, Tochigi 323-0806, Japan

autor

Kumai S.

• Tokyo Institute of Technology, Yokohama city, Kanagawa 226-8503, Japan

Bibliografia

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