Method of dividing a sintered oxidic ferromagnetic ring core and

Details Method of dividing a sintered oxidic ferromagnetic ring core and Method of dividing a sintered oxidic ferromagnetic ring core and

1989-02-03

1990-03-06

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Electron or ion beam deflecting type

21912167, H01F 700

Patent

active

049069594

ABSTRACT:
The invention relates to a method of dividing a ring core (42) of sintered oxidic ferromagnetic material in two semi-annular parts, in which dividing seams 40, 41 are formed in the ring core 42 by means of two spot-shaped heat sources 43 and 44. The spot-shaped heat sources 43 and 44 are moved across the ring core 42 along the lines 40, 41 at a velocity v. An accurate and controlled division of the ring core 42 is obtained independent of the ratio between the heat supplied and the rate of movement v.

REFERENCES:
patent: 4356376 (1982-10-01), Komananduri et al.
patent: 4590652 (1986-05-01), Harwood
patent: 4818840 (1989-04-01), Booth et al.

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