High-toughness stainless steel welding rod used in ultralow-temperature environment and preparation method of high-toughness stainless steel welding rod

• Main Authors: SONG MEIJING, HAN HUANQING, ZHAO ZHENBO, WU SHENGWEN, LI YINGKUI, DAI YING, KOU WEIXIANG, GAO HUI, ZHANG MINGYANG, DU GUITAO
• Format: Patent
• Language: Chinese; English
• Published: 08.03.2022
• 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 belongs to the technical field of welding materials, and particularly relates to a high-toughness stainless steel welding rod used in an ultralow-temperature environment and a preparation method thereof.The high-toughness stainless steel welding rod used in the ultralow-temperature environment comprises a welding core and a coating adhering to the outer wall of the welding core; the coating is mainly prepared from, by weight, 25%-30% of rutile, 10%-15% of iron powder, 10%-15% of feldspar, 10%-15% of fluorite, 5%-10% of chromium powder, 5%-10% of nickel powder, 5%-10% of marble, 2%-5% of electrolytic manganese metal, 2%-5% of molybdenum powder, 2%-5% of mica, 2%-5% of titanium dioxide, 1%-4% of cryolite, 1%-4% of ferrotitanium and 1%-2% of sodium carbonate. The invention provides a high-toughness E316L-16 stainless steel welding rod used in an ultralow-temperature environment. The high-toughness E316L-16 stainless steel welding rod has a certain ferrite number and excellent low-temperature impact