Grace's Guide

British Industrial History

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Efco-Edwards Vacuum Metallurgy

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1956 Joint venture company formed by Edwards High Vacuum and Efco to offer complete metallurgical installations[1]

1957 Developing a process to offer metals and alloys at a stage between true vacuum melting and simple degassing; useful for high quality castings of high alloys where it was impracticable to contain the mold in a vacuum[2]


See Also

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Sources of Information

  1. The Times, Jun 07, 1956
  2. The Times, Oct 23, 1957