Method of forming magnetostrictive rods from rare earth-iron all

Details Method of forming magnetostrictive rods from rare earth-iron all Method of forming magnetostrictive rods from rare earth-iron all

1985-10-28

1986-09-02

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 84, C22B 5900

Patent

active

046094024

ABSTRACT:
Rods of magnetrostructive alloys of iron with rare earth elements are formed by flowing a body of rare earth-iron alloy in a crucible enclosed in a chamber maintained under an inert gas atmosphere, forcing such molten rare-earth-iron alloy into a hollow mold tube of refractory material positioned with its lower end portion within the molten body by means of a pressure differential between the chamber and mold tube and maintaining a portion of the molten alloy in the crucible extending to a level above the lower end of the mold tube so that solid particles of higher melting impurities present in the alloy collect at the surface of the molten body and remain within the crucible as the rod is formed in the mold tube.

REFERENCES:
patent: 3086856 (1963-04-01), Siebertz
patent: 3891431 (1975-06-01), Sahm

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