A downward melt drag single roll caster for casting semisolid slurry

T. Haga*, S. Suzuki

*この研究の対応する著者

研究成果: Article査読

11 被引用数 (Scopus)

抄録

A downward melt drag single roll caster (DMDSRC) was devised to make ingots for thixoforming. The DMDSRC was assembled from a copper roll and a nozzle. Therefore, this casting process is very simple. Molten metal was poured into the nozzle, and semisolid slurry was dragged by the rotating roll from the nozzle continuously. Sharing of molten metal or semisolid slurry between the roll and the nozzle was not intended. Cooling of the melt up to semisolid condition by the roll was intended. The roll surface was not coated by lubricant. However, the metal did not stick to the roll, and the semisolid slurry could be exhausted from the slit of the nozzle continuously. Relationship between experimental conditions and microstructure of the aluminum alloy ingot after heating up to the semisolid condition was investigated. Roll speed, gap of the nozzle (gap between the nozzle and the roll), contacting length between the roll and the melt, were important experimental conditions that affected the microstructure. Primary crystal became spherical, and eutectic Si became fine and spherical when the A356 alloy ingot cast by the DMDSRC was heated up to semisolid condition. Average diameter of the spherical primary crystal was about 90 μm.

本文言語English
ページ(範囲)695-700
ページ数6
ジャーナルJournal of Materials Processing Technology
157-158
SPEC. ISS.
DOI
出版ステータスPublished - 2004 12 20
外部発表はい

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • コンピュータ サイエンスの応用
  • 金属および合金
  • 産業および生産工学

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