High-surface tension 7xxx series aluminum alloy welding wire as well as preparation method and application thereof

• Main Authors: XU KAI, GE KUN, CHEN HAOXIN, WU WEN, ZHANG TIANLI, FANG NAIWEN, YANG KAIQIN, GE LI, LI ZHENHUA, PENG JINGJING
• Format: Patent
• Language: Chinese; English
• Published: 12.08.2022
• Subjects: ALLOYS; CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS; CHEMISTRY; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; FERROUS OR NON-FERROUS ALLOYS; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WELDING; WORKING BY LASER BEAM

The invention discloses a high-surface tension 7xxx series aluminum alloy welding wire and a preparation method and application thereof, and the welding wire comprises the following chemical components in percentage by weight: 6.0%-7.5% of Zn, 2.0%-3.0% of Mg, 1.5%-2.5% of Cu, 0.05%-0.10% of Fe, 0.05%-0.20% of Mn, 0.05%-0.20% of Ti, 0.10%-0.15% of Cr, 0.10%-0.25% of Si, 0.05%-0.30% of Sc, 0.05%-0.15% of Zr, 0.01%-0.05% of Er, 0.05%-0.15% of V, 0.05%-0.15% of Y and the balance of Al and inevitable impurity elements. The welding wire is obtained by reasonably designing and regulating chemical components of the welding wire and introducing surface active elements, and the precision of a deposition layer and the mechanical property of printed parts can be remarkably improved when the welding wire is applied to electric arc additive manufacturing. 本发明公开了一种高表面张力7xxx系铝合金焊丝及其制备方法和应用，该焊丝化学成分的重量百分比为：Zn6.0％-7.5％，Mg2.0％-3.0％，Cu1.5％-2.5％，Fe0.05％-0.10％，Mn0.05％-0.20％，Ti0.05％-0.20％，Cr0.10％-0.15％，Si0.10％-0.25％，Sc0.05％-0.30％，Z