Strip casting using a single roll caster equipped with a scraper

• Autorzy: Haga T. , Akitsu K. , Kamakura K. , Kumai S. , Watari H.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Purpose of this paper is to investigate the ability of a single roll caster equipped with a scraper. The purpose of the development of the single roll caster equipped with a scraper is casting of the strip without centre line segregation and porosity and with sound free solidified surface. The single roll caster can cast the strip without the centre segregation and porosity. However, the conditions of the free solidified surface and the thickness distribution are not sound. The scraper was adopted in order to improve the free solidified surface. Investigation of the effect of the scraper and the properties of the roll cast strip is the purpose of this paper. Design/methodology/approach: A scraper was developed to improve the free solidified surface condition. The scraper scribed the semisolid metal on the free solidified surface to make the free solidified surface flat. The scraper was made from mild-steel-plate, and it was coated by the insulator sheet of 2 mm-thick. The scraper was pushed to free solidified surface by the constant load. Findings: The scraper was very useful to improve the free solidified surface. AA5182 aluminium alloy strip could be cast at the speed up to 40 m/min. There was no centre segregation and porosity. There was no difference between the roll contact surface and the scribed surface. The mechanical properties of the roll cast strip were as same as those of strip made from D.C. cast slab. Hi-content Al-Mg alloy like Al-10 mass%Mg, which cannot be cast into the strip by the twin roll caster without centre segregation, could be cast into the strip without defect. Research limitations/implications: Metal which was investigated was only aluminium alloy. It is not clear that this process is useful to other alloys like steel, copper et. al. Practical implications: This process may be able to be used instead of the D.C. casting and the twin roll casting. Especially, this caster is useful the strip casting of the Al-Mg alloy. Originality/value: The single roll caster equipped with a scraper is original development. This caster may be useful for aluminium and magnesium sheet making companies.

Słowa kluczowe

EN

casting; single roll caster; scraper

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2012
• Tom: Vol. 55, nr 1
• Strony: 26--32
• Opis fizyczny: Bibliogr. 21 poz., rys., tab.

Twórcy

autor

Haga T.

• Osaka Institute of Technology, 5-16-1 Omiya Asahiku Osaka City, 535-8585, Japan

autor

Akitsu K.

• Graduate School of Osaka Institute of Technology, 5-16-1 Omiya Asahiku Osaka City, 535-8585, Japan

autor

Kamakura K.

• Graduate School of Osaka Institute of Technology, 5-16-1 Omiya Asahiku Osaka City, 535-8585, Japan

autor

Kumai S.

• Tokyo Institute of Technology, Yokohama, Japan

autor

Watari H.

• Gunma University, Kiryu, Japan

Bibliografia

• [1] R. Cook, P.G. Groock, P.M. Thomas, D.V. Edmonds, J.D. Hunt, Development of the twin-roll casting process, Journal of Materials Processing Technology 55 (1995) 76-84.
• [2] M. Cortes, Pechiney-Junmbo 3CM, The new demands of thin strip casting, Light Metals (1995) 1161-1164.
• [3] B. Taraglio, C. Romanowski, Thin-gage/high-speed roll casting technology for foil production, Light Metals (1995) 1165-1182.
• [4] A.I. Nussbaum, Three-state-ot-the-art Thin-gage high- speed roll caster for aluminum alloy sheet products Part III, Light Metals Age 55 (1997) 34-39.
• [5] O. Daaland, A.B. Espedal, M.L. Nedreberg, I. Alvestad, Thin gage twin-roll casting, process capabilities and product quality, Light Metals (1997) 745-752.
• [6] P.Y. Menet, R. Cayol, J. Moriceau, Pechiney Jumbo 3CM ‘TM’ start-up of the Neu-Brisach thin strip caster, Light Metals (1997) 753-756.
• [7] P.M. Thomas, P.G. Grocock, J.M. Bouzendorffer, Dynamic strip caster - An update on the operation of the roll caster at Eurofoil, Metallurgical Plant and Technology 20 (1997) 44-52.
• [8] S. Hamers, D. Smith, C. Romanowski, G. Yildizbayrak, B. Taraglio, Twin roll casting of aluminum at 2.5 mm gauge. Production experience and process improvement, Light Metals (1999) 931-937.
• [9] J. Benedyk, Thin strip casting for aluminum alloy sheet applications developed by Pechiney at Neuf-Brisach, Light Metals Age 59 (2001) 28-30.
• [10] S. Hamer, C. Romanowski, B. Taraglio, Continuous casting and rolling of aluminum: Analysis of capacities, products ranges, and Technology, Light Metals Age 60 (2002) 6-17.
• [11] M. Duendar, O.E. Keles, B. Kerti, N. Dogan, Crystallographic texture development of twin-roll cast aluminum strips, Light Metals 34 (2004) 723-724.
• [12] Ch. Gras, M. Meredith, J.D. Hund, Microdefects for mation during the roll casting of Al-Mg-Mn aluminum alloys, Journal of Materials Processing Technology 167 (2005) 62-72.
• [13] T. Haga, M. Motomura, M. Arman, S. Suzuki, Production of Al-12mass%Si alloy strip by melt drag process, Journal of Japan Institute of Light Metals V44 (1994) 136-141.
• [14] T. Haga, K. Ishihara, T. Katayama, T. Nishiyama, Effect of contacting condition between molten metal and roll on Al-12%Si alloy strip cast by melt drag method, Journal of Japan Institute of Light Metals 48/12 (1998) 613-617.
• [15] T. Haga, R. Nakamura, S. Kumai, H. Watari, Clad strip casting by a twin roll caster, Archives of Materials Science and Engineering 37/2 (2009) 117-124.
• [16] T. Haga, H. Watari, S. Kumai, High speed twin roll casting of Mg alloy strip by a vertical type twin roll caster, Journal of Achievements in Materials and Manufacturing Engineering 15 (2006) 186-192.
• [17] T. Haga, M. Ikawa, H. Watari, S. Kumai, High speed twin roll casting of Al-3Si-0.6Mg strip, Journal of Achievements in Materials and Manufacturing Engineering 17 (2006) 337-340.
• [18] T. Haga, M. Ikawa, H. Watari, S. Kumai, High speed twin roll casting of 6016 strip, Journal of Achievements in Materials and Manufacturing Engineering 18 (2006) 371-374.
• [19] T. Haga, M. Ikawa, H. Watari, S. Kumai, High speed twin roll casting of recycled Al-3Si-0.6Mg strip, Journal of Achievements in Materials and Manufacturing Engineering 21/1 (2007) 7-12.
• [20] T. Haga, K. Hirooka, H. Watari, S. Kumai, Grooved roll for a high speed twin roll caster, Archives of Materials Science and Engineering 30/2 (2008) 117-120.
• [21] T. Haga, H. Inui, H. Watari, S. Kumai, Casting of aluminum alloy strip using an unequal diameter twin roll caster, Archives of Materials Science and Engineering 29/2 (2008) 113-116.