High speed twin roll caster for aluminum alloy thin strip

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

Abstrakty

EN

Purpose: In the present study, effectiveness of a high-speed twin roll caster for recycling aluminum alloy was investigated. Design/methodology/approach: The effects of the high-speed twin roll caster on alleviating the deterioration of mechanical properties by impurities were investigated. Properties of the cast strip were investigated by metallography, a tension test, and a bending test. Findings: A vertical type twin roll caster for strip casting of aluminum alloys was devised. The strip, which was thinner than 3 mm, could be cast at speeds higher than 60 m/min. Features of the twin roll casters are as below. Copper rolls were used and lubricant was not used in order to increase the casting speed. A casting nozzle was used to set the solidification length precisely. Heat transfer between melt and the roll was improved by hydrostatic pressure of the melt. Separating force was very small in order to prevent sticking of the strip to the roll. Low superheat casting was carried out in order to improve microstructure of the strip. In the present study, effectiveness of a high-speed and high-cooling rate twin roll caster of the present study for recycling aluminum alloy was investigated. Fe was added as impurity to 6063 and A356. The roll caster of the present study was useful to decrease the influence of impurity of Fe. Research limitations/implications: A high-speed twin roll caster of vertical type was designed and assembled to cast aluminum alloy thin strip. Originality/value: The results demonstrate that the high-speed twin roll caster can improve the deterioration by impurities.

Słowa kluczowe

EN

twin roll casting; recycle aluminum alloy; aluminum alloy; thin strip; rapid solidification

PL

odlewanie techniką szybkiego schładzania z fazy ciekłej; recykling; stop aluminium; cienka taśma; szybkie krzepnięcie

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2007
• Tom: Vol. 24, nr 1
• Strony: 365--371
• Opis fizyczny: Bibliogr. 13 poz., fot., rys., tab.

Twórcy

autor

Haga T.

autor

Inui H.

autor

Sakaguchi H.

autor

Watari H.

autor

Kumai S.

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

Bibliografia

• [1] M. Yun, X. Yang, D.V. Edmonds, J.D. Hunt, P.M. Thomas, High speed roll casting of al alloy and mg alloy strip, Cast Met. 4-2 (1991) 108-111.
• [2] D. V. Edmonds, J. D. Hunt, D. J. Monagham, X. Yang, M. Yun, D. J. Browne, R. Cook, P. M. Thomas, Extraction refining and fabrication of light metals, Proceedings of Canadian Institute of Mining, Metallurgy and Petroleum, Ottawa, 1991,257-271.
• [3] T. Haga, T.Nishiyama, S. Suzuki, Strip casting of A5182 alloy using a melt drag twin-roll caster, Journal of Materials Processing Technology 133 (2003) 103-107.
• [4] T. Haga, S. Suzuki, Melt ejection twin roll caster for the strip casting of aluminum alloy, Journal of Materials Processing Technology 137 (2003) 92-95.
• [5] T. Haga, K. Takahashi, M. Ikawa, H. Watari, A vertical-type twin roll caster for aluminum alloy strip, Journal of Materials Processing Technology 140 (2003) 610-615.
• [6] T. Haga, S. Suzuki, Study on high-speed twin-roll caster for aluminum alloys, Journal of Materials Processing Technology 143 (2003) 895-900.
• [7] T. Haga, K. Tkahashi, M. Ikawaand, H. Watari, Twin roll casting of aluminum alloy strips, Journal of Materials Processing Technology 153 (2004) 42-47.
• [8] T. Motegi, N. Ogawa, K. Kondo, C. Liu, S. Aoyama, Continuous casting of semisolid Al-Si-Mg alloy, Proceedings of the 6th International Conf. Aluminium Alloys (ICCA-6), Tokyo, Japan, 1998, 297-326.
• [9] T. Haga, Semi-solid roll casting of aluminum alloy strip by melt drag twin roll caster, Journal of Materials Processing Technology 111 (2001) 64-68.
• [10] T. Haga, S. Suzuki, Roll casting of aluminum alloy strip by melt drag twin roll caster, Journal of Materials Processing Technology 118 (2001) 165-168.
• [11] T. Haga, Semisolid strip casting using a twin roll caster equipped with a cooling slope, Journal of Materials Processing Technology 130 (2002) 558-561.
• [12] T. Haga, P. Kapranos, Billetless simple thixoforming process, Journal of Materials Processing Technology 130 (2002) 581-586.
• [13] T. Haga, P. Kapranos, Simple rheocasting processes, Journal of Materials Processing Technology 130 (2002) 594-598.