IMPROVEMENTS IN OR RELATING TO APPARATUS FOR FORMING INGOTS BY ELECTRIC HEATING

Patent · Wed Apr 15 04:00:00 EST 1959

OSTI ID:4240484

Garmy, R J

An arc furnace for producing large ingots of Ti or Zr is described. The induction-heated crucible is rolled on tracks under a cylindrical shell and raised up by jacks to fit the opening in the bottom of the shell. The shell is fitted with viewing means and electrodes. The electrode arrangement includes motors and gear systems for turning the electrodes and raising and lowering them to maintain a constant arc length. The operation of the furnace may be carried out in an inert gas atmosphere. Thus, in operating the furnace, scrap metal is put in the crucible and the crucible is fitted to the shell and inert gas scavenging procedes. More metal is fed through the top as required. The electrodes are actuated to move in paths controlled by a mechanism so as to cover the surface of the melt. As the amount of melt increases, the coverage by the arcs can be reduced. The arc current plus the induction coil current cause a motion in the melt which makes for a homogeneous fine-grained ingot. (T.R.H.)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-13-012737
• OSTI ID: 4240484
• Report Number(s): GB 811917
• Country of Publication: United Kingdom
• Language: English

Related Subjects

CASTING
COATING
COILS
CONTROL SYSTEMS
CRUCIBLES
CURRENTS
CYLINDERS
ELECTRIC ARCS
ELECTRODES
FURNACES
GRAIN SIZE
HEATING
HOMOGENEOUS REACTORS
INDUCTION
INERT GASES
INSTRUMENTS
MACHINE PARTS
MECHANICAL STRUCTURES
MELTING
METALLURGY AND CERAMICS
MOTION
MOTORS
OPERATION
PRODUCTION
ROLLING
ROTATION
SHELLS
SURFACES
TITANIUM
WINDOWS
ZIRCONIUM