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1. (WO2016061007) SYSTEMS AND METHODS FOR WELDING MILL SCALED WORKPIECES

Pub. No.:    WO/2016/061007    International Application No.:    PCT/US2015/055184
Publication Date: Fri Apr 22 01:59:59 CEST 2016 International Filing Date: Wed Oct 14 01:59:59 CEST 2015
IPC: B23K 35/30
B23K 35/40
B23K 35/02
B23K 9/173
B23K 35/368
B23K 9/16
B23K 103/04
Applicants: HOBART BROTHERS COMPANY
Inventors: BARHORST, Steven Edward
DUNCAN, Daryl L.
BUNDY, Joseph C.
XIAO, Zhigang
Title: SYSTEMS AND METHODS FOR WELDING MILL SCALED WORKPIECES
Abstract:
This disclosure relates generally to Gas Metal Arc Welding (GMAW) and, more specifically, to Metal-cored Arc Welding (MCAW) of mill scaled steel workpieces. A metal-cored welding wire, including a sheath and a core, capable of welding mill scaled workpieces without prior descaling is disclosed. The metal-cored welding wire has a sulfur source that occupies between approximately 0.04% and approximately 0.18% of the weight of the metal-cored welding wire, and has a cellulose source that occupies between approximately 0.09% and approximately 0.54% of the weight of the metal-cored welding wire.