B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
327/43
B23K 9/18 (2006.01) B23K 9/04 (2006.01) B23K 9/08 (2006.01)
Patent
CA 1101939
ABSTRACT OF THE DISCLOSURE An improved method and apparatus for the submerged- arc cladding of a metallic work piece, which has an obstruction extending generally transverse to the surface to be clad, with a metal electrode strip that melts in an electric arc while forming a weld bead on the work piece. In this type of cladding apparatus, there exist means for moving an electrode strip and a work piece relative to each other and for passing an electric current through the electrode, creating an electric arc between the work piece and the electrode. The electrode strip melts, and a cladding layer is thereby deposited on the work piece in a generally linearly cladding zone. Such an apparatus also includes means for depositing a welding flux that covers the region of the electric arc and leaves a proportion of the weld bead still in its molten state. The flux covering provides a layer of molten flux to cover the molten metal. In addition, the cladding apparatus includes magnetic poles of opposite polarity positioned adjacent opposite edges of the electrode strip for the purpose of agitating the molten metal by agitating the molten flux in contact with it. According to the improved method and apparatus, the magnetic flux is caused to travel through the obstruction so the obstruction itself forms a magnetic pole. In a preferred aspect, the electrode strip would be inclined away from the obstruction in the plane of the strip to facilitate strip cladding in a corner formed in the work piece by the obstruction.
302849
Combustion Engineering Inc.
Smart & Biggar
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