Flux-cored wire for all-position welding of 460MPa-grade ship and maritime work steel

• Main Authors: LIAO ZHIQIAN, LIU JIAN, ZHANG CHENGJIE, PENG JIXIANG, CHENG YINGJIN
• Format: Patent
• Language: Chinese; English
• Published: 31.05.2024
• 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

The invention provides a flux-cored wire for all-position welding of 460MPa ship and maritime work steel, and flux-cored powder comprises the following components in percentage by mass: 30-40% of rutile, 2-10% of titanium dioxide, 3-7% of feldspar, 4-20% of fused magnesite, 2.5-3.5% of nickel-magnesium alloy, 6-12% of electrolytic manganese metal or 15-24% of ferromanganese, less than 4% of ferrosilicon alloy, 0.5-3% of complex fluoride, less than 1% of ferrovanadium, less than 5% of aluminum oxide or less than 3% of Al powder, less than 2% of iron red and the balance of iron powder. According to the flux-cored wire for all-position welding of the 460MPa-grade ship and maritime work steel, through the design of the flux core and deposited metal, the composition formula of the flux core is optimized, the slag composition is adjusted, the deoxidation capacity is improved, and the metal structure of a weld joint is improved; therefore, the flux-cored wire has the characteristics of ultralow diffusible hydrogen,