Praxair S.t. Technology, Inc.

John Quets

Ardy Kleyman

Vladimir Belov

Daming Wang

William Jarosinski

This invention relates to rolls for use in or in contact with molten metal comprising a roll drum having an outer peripheral surface and a thermally sprayed coating on the outer peripheral surface of said roll drum, said thermally sprayed coating comprising from about 66 to about 88 weight percent of tungsten, from about 2.5 to about 6 weight percent of carbon, from about 6 to about 20 weight percent of cobalt, and from about 2 to about 9 weight percent of chromium; a process for preparing the rolls; a method for forming a metal layer on a metal sheet utilizing the rolls, e.g., galvanization; and a thermal spray powder for coating the outer peripheral surface of the rolls.

Thermal spray coated rolls for molten metal baths

A thermal spray powder composition, a coating made using a powder of this composition, and a process for applying the coating. The chemical composition of the powders of the invention comprise a blend of a tungsten carbide-cobalt-chromium material and a metallic cobalt alloy.

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Indianapolis, IN, United States of America

John Quets