Metallurgical apparatus – Means for melting or vaporizing metal or treating liquefied... – By providing – treating or protecting environment – e.g. – vacuum
Patent
1975-06-18
1977-05-17
Lake, Roy
Metallurgical apparatus
Means for melting or vaporizing metal or treating liquefied...
By providing, treating or protecting environment, e.g., vacuum
266237, 75 49, 164 50, 164254, 164147, C21C 710
Patent
active
040237834
ABSTRACT:
The invention comprises a method for reducing the cooling of metal and the projection of metal onto the walls in the course of degasing of liquid metals by vacuum jet, which comprises establishing, in the area of the nozzle extending into the vacuum chamber and beneath said nozzle, a magnetic field tending to contract or confine the jet admitted by the nozzle into the vacuum chamber.
It further comprises an apparatus for degasing liquid metals by vacuum jet technique, comprising, around the nozzle which forms the jet between an upper ladle containing the liquid metal to be degased and the vacuum chamber containing a lower laddle or an ingot mold to receive the degased liquid metal and beneath said nozzle, a solenoid having an a.c. electric current flowing therethrough such that the electric currents induced in the liquid metal tend to contract or confine the liquid metal jet ejected from said nozzle.
REFERENCES:
patent: 2085450 (1937-06-01), Rohn
patent: 2997760 (1961-08-01), Hanks et al.
patent: 3061298 (1962-10-01), Yamazoe
patent: 3177536 (1965-04-01), Schneider
Agence Nationale de Valorisation de la Recherche (ANVAR)
Bell Paul A.
Lake Roy
Stokes William D.
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