US 12,358,066 B2
Dual twin-saw wire cladding
Rastislav Kubicek, Gothenburg (SE); and Zeljko Ackar, Partille (SE)
Assigned to ESAB AB, Gothenburg (SE)
Filed by ESAB AB, Gothenburg (SE)
Filed on Dec. 13, 2021, as Appl. No. 17/549,149.
Prior Publication US 2023/0182226 A1, Jun. 15, 2023
Int. Cl. B23K 9/18 (2006.01); B23K 9/04 (2006.01); B23K 25/00 (2006.01)
CPC B23K 9/188 (2013.01) [B23K 9/04 (2013.01); B23K 25/005 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A system for cladding a workpiece, the system comprising:
a first twin submerged arc welding (“SAW”) head configured to receive a first leading wire and a first trailing wire along a first cladding line;
a second twin SAW head configured to receive a second leading wire and a second trailing wire along a second cladding line, the second twin SAW head arranged behind the first twin SAW head along a welding direction; and
a flux hopper configured to apply a conductive electroslag flux to the workpiece, wherein the conductive electroslag flux facilitates resistive heating of the first leading wire, the first trailing wire, the second leading wire, and the second trailing wire to melt the conductive electroslag flux without generating an arc and form a molten slag pool, and the conductive electroslag flux electrically couples at least the first leading wire and the first trailing wire to one another to facilitate heat transfer to encourage formation of a thick cladded deposit on the workpiece via the molten slag pool;
wherein the second cladding line is offset from the first cladding line in a direction perpendicular to the first cladding line.