Abstract: An apparatus for controlling metal coatings on wire, strip, mesh or the like, emerging substantially vertically from metal baths, comprising an electromagnetic device adapted for situation at or below the point of emergence of the wire, strip, mesh or the like from the molten bath, said electromagnetic device providing an alternating electromagnetic field generated by single phase alternating electric current, and the positioning being such that the point of emergence is always within the electromagnetic field.

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.