Amorphous alloy toroids

Details Amorphous alloy toroids Amorphous alloy toroids

1981-09-18

1987-07-28

Combs, E. Michael

Metal deforming

By deflecting successively-presented portions of work during...

To form spiral coil

29605, B21C 4700, H01F 706

Patent

active

046824863

ABSTRACT:
The soft magnetic properties of amorphous alloy toroids is improved by turning under tension an amorphous alloy ribbon onto itself to form a winding having a preselected number of turns such that the radially acting compressive stress is minimized. In one embodiment, the radially acting compressive stress is locally minimized by using such a toroid pole-piece geometry that the windings have as little an area of curvature as is possible. In another embodiment, the radially acting compressive stress is globally minimized by turning the ribbon onto itself such that successive turns of the winding are wrapped with progressively less tension.

REFERENCES:
patent: 3566462 (1971-03-01), Moore
patent: 4053331 (1977-10-01), Graham et al.
patent: 4053332 (1977-10-01), Egami et al.
patent: 4053333 (1977-10-01), Egami et al.
patent: 4116728 (1978-09-01), Becker et al.
Luborsky et al, "Strain Induced Anistropy in Amorphous Alloys and the Eff of Toroid Diameter on Magnetic Properties", vol. MAG-15, IEEE Transactions Magnetics, p. 1939 (1979).
Luborsky et al, "Amorphous Materials-A New Class of Soft Magnetic Alloys"; Journal of Magnestism and Magnetic Materials, vol. 19, p. 130 (1980).

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