Demagging processes by fluxing from aluninum alloys

Katsuhisa Nagayama, Katsusaburo Toyoda, Yoshishige Tsumura

Research output: Contribution to journalArticlepeer-review


Various aluminum fluoride fluxing treatment were tried to achieve a practical process for demagging from molten aluminum alloys. The tried treatments included pure aluminum fluoride fluxing, aluminum fluoride-open-hearth fluxes mixtures fluxing, and aluminum fluoride fluxing followed by open-hearth fluxes fluxing. Fluxing with mixtures of aluminum fluoride and open-hearth fluxes at temperatures 760 °C or above is the most effective. An effect of initial Mg concentration in aluminum alloys on demagging efficiency is determined. An antipollution demagging process using silica (U.S. Pat. 4,097,270) was also tested. It is not so applicable economically and has a low and unstable demagging efficiency.

Original languageEnglish
Pages (from-to)243-248
Number of pages6
JournalJournal of Japan Institute of Light Metals
Issue number5
Publication statusPublished - 1983 Jan

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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