FLUX CORED WIRE FOR OVERLAY WELDING

The present invention relates to a flux cored wire for overlay welding composed of a metal sheath and a filler filled in the metal sheath. The flux cored wire comprises: 18-25 wt% of Cr, 2.0-2.9 wt% of C, 1.0-2.5 wt% of Ti, 0.8-1.8 wt% of Si, 0.5-1.2 wt% of B, 0.02-0.15 wt% of SiO_2, 0.01-0.1 wt% of...

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Bibliographic Details
Main Authors KO, YONG HO, KIM, IN JU, KIM, JEONG HAN, BANG, JUNG HWAN, KIM, JUN KI
Format Patent
LanguageEnglish
Korean
Published 01.12.2014
Subjects
CLADDING OR PLATING BY SOLDERING OR WELDING
CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
SOLDERING OR UNSOLDERING
TRANSPORTING
WELDING
WORKING BY LASER BEAM
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Summary:The present invention relates to a flux cored wire for overlay welding composed of a metal sheath and a filler filled in the metal sheath. The flux cored wire comprises: 18-25 wt% of Cr, 2.0-2.9 wt% of C, 1.0-2.5 wt% of Ti, 0.8-1.8 wt% of Si, 0.5-1.2 wt% of B, 0.02-0.15 wt% of SiO_2, 0.01-0.1 wt% of Al_2O_3, 0.01-0.1 wt% of K_2O, and the remainder consisting of Fe based on the total weight. The SiO_2, Al_2O_3, and K_2O are part of a filler as a flux. According to the present invention, the flux cored wire for overlay welding can be used to hard face a structure which requires high corrosion resistance, or a device component as a cost-efficient bonding material because the main ingredient of the wire is steel but the wire has a welded part having corrosion resistance, which is higher than a coating layer formed by coating the surface of a base material with non-oxide ceramics, such as a tungsten carbide system or a boron carbide system.
Bibliography:Application Number: KR20130079547