Controlling metal coatings on wire, strip and the like emerging

Details Controlling metal coatings on wire, strip and the like emerging Controlling metal coatings on wire, strip and the like emerging

1978-11-22

1980-10-14

Pianalto, Bernard D.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427331, 427334, 427432, 427433, 427436, 4274346, B05D 314

Patent

active

042282004

ABSTRACT:
A method for controlling the coating of wires, strips or the like, emerging from molten metal baths, involving subjecting the wire to a single stationary, alternating electromagnetic field generated by an electromagnetic device positioned at or below the point of emergence such that the point of emergence is always within the electromagnetic field. The frequency and/or current for generating the field may be adjustable, and the field generated by either parallel or transverse to the wire, strip or the like. The wire, strip or the like may pass through, or adjacent, the electromagnetic device. A neutral or reducing atmosphere may be provided within a chamber situated at the point of emergence and the point of emergence covered with particles inert to the environment. Alternatively the emergence area, may be covered by a confined or unconfined bed of oil charcoal. A similar amount of gas or vapor which will decompose to produce a sulphide (-S) radical may be supplied to the protective atmosphere either directly or in addition to the neutral or reducing gas.

REFERENCES:
patent: 3518109 (1970-06-01), Halley

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