Method of hardfacing vertical walls
AssigneeM.A.N. Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft
InventorsBodo Herrmann, Paul Bastel, Selahattin Bas
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Abstract
A method of hardfacing vertical walls comprises building up a layer of superimposed partly overlapping horizontally extending weld beads by depositing the beads in a submerged arc welding operation using relatively thin welding wires and welding powder which is fed over the weld wire. The welding powder is allowed to accumulate to provide a support for additional powder as welding progresses vertically.
Claims2
A method of hardfacing vertical walls of a workpiece comprising building up a layer of superimposed partly overlapping horizontal weld beads by depositing the beads in a submerged arc welding operation using a welding wire and welding powder, supplying the welding powder as the welding wire is fed to the weld bead using a powder feed to submerge the arc welding, and accumulating the welding powder in the workpiece being formed up to the arc welding so as to support the powder which is beind fed to the arc weld.
A method of hardfacing the interior of a tubular member comprising:
- arranging the tubular member upright, positioning a welding wire feeding nozzle so that it feeds wire at selected angles to the horizontal plane and radius of the member with respect to the interior surface to be welded;
- applying a weld bead to the surface continuously as the tubular member and feeding nozzle are rotated relatively to form superimposed partly overlapping horizontal weld beads;
- continuously feeding welding powder over the welding wire as it is welded to the tubular member;
- raising the weld wire relative to the tubular member as the welding progresses and allowing the welding powder to accumulate in the tubular member so that it forms a support for the powder which is beind fed to the weld bead.
Dependencies are inferred from the claim text.