High speed twin roll casters for aluminum alloy strips

Toshio Haga, Shinsuke Suzuki

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

Two kinds of twin roll caster for aluminum alloys were devised in the present study. Vertical type was adopted. The strip, which was thinner than 3 mm, could be cast at speeds higher than 60 m/min. Aluminum alloy, which freezing zone is very wide like A5182, could be cast using the twin roll caster of the present study at speeds up to 150 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. 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. A5182 strip, which had equiaxed structure, could be cast. Some heat treatment was tried and tested in order to improve the mechanical property of A5182 strip. A3003 strip was cast by low superheat strip casting. A3003 strip showed thermo-softening resistance. Semisolid strip casting of A356 alloy was tried using a twin roll caster equipped with a cooling slope. Mechanical property, especially elongation, was improved. Result of 180 degrees bending test was improved, too. Semisolid strip casting was useful for high speed roll casting, and the casting speed increased up to 180 m/min.

Original languageEnglish
Pages (from-to)83-88
Number of pages6
JournalMaterials Science Forum
Volume396-402
Issue number1
Publication statusPublished - 2002
EventAluminium Alloys 2002 Their Physical and Mechnaical Properties: Proceedings of the 8th International Conference ICAA8 - Cambridge, United Kingdom
Duration: 2002 Jul 22002 Jul 5

Keywords

  • Aluminum alloy
  • Continuous casting
  • Strip caster
  • Thin strip
  • Twin roll caster

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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