Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1990-06-18
1991-11-12
Lin, Kuang Y.
Metal founding
Process
Shaping liquid metal against a forming surface
1641221, B22D 2704
Patent
active
050639862
ABSTRACT:
A method for manufacturing an alloy rod having giant magnetostriction, which comprises the steps of: supplying a rod-shaped alloy material, comprising at least two rare earth metals including terbium and dysprosium and at least one transition metal, into a crucible moving downwardly at a speed of from 0.2 to 8.5 mm/minute in an inert gas atmosphere kept under a pressure of from 0.2 to 10 atm.; heating the rod-shaped alloy material in the circumferential direction thereof in the crucible by means of an annular high-frequency heating coil having a frequency of from 0.1 to 3 MHz and having an inside diameter of from 1.1 to 1.6 times as large as an outside diameter of the crucible, arranged so as to surround the crucible; continuously moving the heating from the lower end toward the upper end of the alloy material to locally and sequentially melt the alloy material in the axial direction thereof; and then locally and sequentially solidifying the resultant molten section of the alloy material in the crucible, thereby manufacturing an alloy rod having giant magnetostriction comprising a single-crystal structure or a unidirectional-solidification structure consistent with the axial line thereof.
REFERENCES:
patent: 3759310 (1973-09-01), Barrow et al.
patent: 4609402 (1986-09-01), McMasters
patent: 4665970 (1987-05-01), Ohno
J. D. Verhoeven et al., "The Growth of Single Crystal Terfenol-D Crystals", pp. 223-231, vol. 18A, Feb. 1987, Metallurgical Transaction A.
O. D. McMasters et al., "Single Crystal Growth by the Horizontal Levitation Zone Melting Method", pp. 577-583, Amsterdam, NL; vol. 43, 1978, Journal of Crystal Growth.
Kobayashi Keiichi
Murakami Katsuhiko
Nakanishi Toshiyuki
Nakano Iwao
Yamagami Nobuo
Japan Marine Science and Technology Center
Lin Kuang Y.
NKK Corporation
OKI Electric Industry Co., Ltd.
LandOfFree
Method for manufacturing alloy rod having giant magnetostriction does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for manufacturing alloy rod having giant magnetostriction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for manufacturing alloy rod having giant magnetostriction will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1007508