Iron core of electromagnet and method of producing the same

Details Iron core of electromagnet and method of producing the same Iron core of electromagnet and method of producing the same

1987-07-02

1989-12-12

Broome, H.

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335297, H01F 300

Patent

active

048870595

ABSTRACT:
The iron core of an electromagnet includes a stack of steel sheets stacked perpendicular to a horizontal axis, presents a sectional shape symmetrical with respect to the horizontal axis and is provided therein with a groove of a specified shape. The iron core is produced by stacking and integrating a desired number of steel sheets into a one-piece iron core and finally forming the specific shaped groove therein. Accordingly, no gaps are generated in the iron core and the density thereof becomes high even in the case of a sector iron core. Furthermore, the groove formation is conducted as a final step after the integration of the stacked steel sheets. Thus the heat during the welding operation for such an integration has no adverse effect on the groove in the iron core and the problem of lack of magnetic force is solved thereby.

REFERENCES:
patent: 2239267 (1941-04-01), Jeffrey
patent: 3221191 (1965-11-01), Cuches et al.

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