Apparatus for the continuous application of a metallic coating t

Details Apparatus for the continuous application of a metallic coating t Apparatus for the continuous application of a metallic coating t

1975-04-22

1977-07-19

Truhe, J. V.

Electric heating

Metal heating

By arc

118 68, B23K 900

Patent

active

040370747

ABSTRACT:
Steel strip is continuously coated with molten metal by passing it through a plasma arc and projecting the molten metal thereon in an inert atmosphere, e.g. nitrogen. The projecting means reciprocates transversely of the strip. The strip is preheated prior to deposition and the surface of the coating is reheated for refusion of only the surface of the coating. An inert atmosphere is maintained in an enclosure surrounding the projecting apparatus, by directing inert gas against the coated strip in a direction opposite to the direction of movement of the strip.

REFERENCES:
patent: 2250561 (1941-07-01), Wissler
patent: 2746420 (1956-05-01), Steigerwald
patent: 3010009 (1961-11-01), Ducati
patent: 3071678 (1963-01-01), Neely et al.
patent: 3211886 (1965-10-01), Barkan et al.
patent: 3325620 (1967-06-01), Hunt et al.
patent: 3394678 (1968-07-01), Edwards et al.
patent: 3440390 (1969-04-01), McCullough et al.
patent: 3819901 (1974-06-01), Berinde et al.
patent: 3839618 (1974-10-01), Muehlberger
patent: 3900639 (1975-08-01), Lauterbach

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