Coating apparatus – With heat exchange – drying – or non-coating gas or vapor... – Plural treatments
Patent
1977-07-19
1979-10-02
Kaplan, Morris
Coating apparatus
With heat exchange, drying, or non-coating gas or vapor...
Plural treatments
118 69, 118405, 427120, 427434E, B05C 312
Patent
active
041694260
ABSTRACT:
A filiform workpiece such as a metal wire is advanced at high speed, after passage through several pretreatment baths, in a vertically upward direction through a closed-ended nozzle of a crucible by way of a lower inlet aperture and an upper outlet aperture of that nozzle which is completely filled with a thermally fusible coating material (e.g. zinc). A guide tube adjustably seated in the inlet aperture has an inner diameter substantially equaling that of the workpiece to be coated whereas the outlet aperture, formed by a collar of a substance which is not wettable by the coating material, has a diameter about two to three times as large. A short residence time of less than 5.multidot.10.sup.-2 second for any given point of the workpiece in the molten mass holds down the temperature of the workpiece and results in rapid hardening of the coating material upon emergence from the bath.
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patent: 4035521 (1977-07-01), Westervelt et al.
Kornmann Michel
Nussbaum Marcel
Rexer Jurgen
Battelle (Memorial Institute)
Kaplan Morris
Ross Karl F.
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