Cutting thin metal sheet with an electron beam

Electric heating – Metal heating – By arc

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219121EG, B23K 1500

Patent

active

043563775

ABSTRACT:
Amorphous metal ribbon and thin conventional magnetic material is fully cut through by an electron beam and has no or minimal bead on the edge. The ribbon is bent around a roller while under the electron beam and centrifugal force removes molten metal from the cut. An alternative method is to partially cut through and mechanically deform the material to break the thinned section metal bridges remaining below the cut. Motor laminations so cut have negligible increase in thickness and stack compactly.

REFERENCES:
patent: 4155397 (1979-05-01), Honsinger et al.
patent: 4187441 (1980-02-01), Oney
patent: 4328411 (1982-05-01), Haller et al.

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