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Development of a twin roll caster for light metals

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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Purpose: Purpose of this paper is to show the development of a twin roll caster for aluminium alloy. One of the developments was the increase of the roll speed. The increase of the roll speed was essential to improve the low productivity of the twin roll caster. Limitation of the alloys, which can be cast into the strip, could be enlarged by the method to increase the roll speed. The method to increase the roll speed was useful to increase the cooling rate of the cast strip. The devices to increase the roll speed were shown in this paper. Other development was invention of the twin roll caster to cast clad strip. The twin roll casters to cast two layers clad strip, three layers clad strip and five layers clad strip were invented. Design/methodology/approach: Increase of roll speed was attained by the use of a copper roll and a nozzle, operation of the low temperature casting and non-use of parting material. A scraper was adopted to the twin roll caster for clad strip to prevent the mixture of the molten metals and to control the surface condition. The devices to increase the roll speed were useful for the roll caster to cast clad strip. Findings: The aluminium alloy strip could be cast at the speeds up to 90 m/min. The aluminium alloy which has wide freezing zone like Al-25%Si could be cast into the strip. Two layers, three layers and five layers of clad strips could be cast. Research limitations/implications: The roll casters were laboratory size. Therefore, it was not clear of the ability of the casting of the long size and wide size strips. Practical implications: The productivity of aluminium alloy strip is increased. The property of the aluminium alloy strip is improved. The aluminium alloy, which was too brittle to be formed into the plate, will be cast into strip directly from melt. The process and energy to make the brazing sheet will be saved by the roll caster of the present study. Originality/value: The invented roll casters, devices for casting and properties of the cast strips are original.
Rocznik
Strony
393--402
Opis fizyczny
Bibliogr. 22 poz., rys., wykr.
Twórcy
autor
  • Department of Mechanical Engineering, Osaka Institute of Technology, 5-16-1 Omiya Asahiku, Osaka City 535-8585, 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 and Technology 55/2 (1995 )76-84.
  • [2] M. Cortes, Pechiney-Junmbo 3CM, The new demands of thin strip casting, Light Metals Age (1995) 1161-1164.
  • [3] B. Taraglio, C. Romanowski, Thin-gage/high-speed roll casting technology for foil production, Light Metal Age (1995) 1165-1182.
  • [4] A.I. Nussbaum, Three-state-of-the-art Thin–gage high-speed roll caster for aluminum alloy sheet products Part III, Light Metal 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 Metal Age (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 Metal Age (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, Metal Plant Technology International 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 Metal Age (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 Metal 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 Metal Age (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 and Technology 167 (2005) 62-72.
  • [13] T. Haga, M. Matsuo, D. Kunigo, Y. Hatanaka, R. Nakamura, H. Watari, S. Kumai, Roll casting of 5182 aluminium alloy, Journal of Achievements in Materials and Manufacturing Engineering 34/2 (2009) 172-179.
  • [14] 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.
  • [15] 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.
  • [16] 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.
  • [17] 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.
  • [18] T. Haga, S. Suzuki, A twin roll caster to casting of clad strip. Journal of Materials Processing and Technology 138 (2003) 366-371.
  • [19] T. Haga, K. Takahashi, Downward melt drag twin roll caster, Journal of Materials Processing and Technology 157 (2004) 696-700.
  • [20] T. Haga, Casting of clad strip using a twin roll caster, Proceeding of the 33rd Matador (2000) 295-300.
  • [21] 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.
  • [22] R. Nakamura, T. Yamabayashi, T. Haga, Roll caster for three-layer clad-strip, Archives of Materials Science and Engineering 41/2 (2010) 112-120.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-05975168-60ec-4c7b-9167-3df1ef7761d1
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