Seamless flux-cored wire for 10CrNi3MoV steel and manufacturing method

The invention belongs to the field of welding materials, and particularly relates to a seamless flux-cored wire for 10CrNi3MoV steel, which comprises an outer skin and a flux core, the flux core is formed by mixing the following components including 35%-40% of rutile, 0.5%-1% of graphite, 0.5%-1.5% of sodium carbonate, 4%-7% of quartz, 0.5%-1.5% of cerium oxide, 2%-4% of magnesium fluoride, 3%-5% of silicon iron, 3.5%-6.5% of low-carbon ferromanganese, 2.5%-3% of ferromolybdenum, 0.4%-0.8% of ferrovanadium, 17%-20% of nickel powder, 6%-8% of chromium metal and the balance iron powder. The seamless flux-cored wire for the 10CrNi3MoV steel has the advantages of being good in welding manufacturability, stable in mechanical property, good in crack resistance, low in diffusible hydrogen, high in moisture absorption resistance and excellent in rust resistance. 本发明属于焊接材料领域，尤其是涉及一种10CrNi3MoV钢用无缝药芯焊丝，包括外皮和药芯，所述外皮为低碳钢带，按质量百分比计，所述药芯由以下组分混合而成：金红石35％-40％、石墨0.5％-1％、纯碱0.5％-1.5％、石英4％-7％、氧化铈0.5％-1.5％、氟化镁2％-4％、硅铁3％-5％、低碳锰铁3.5％