Electromagnetic induction elimination method for arc magnetic blow-off in hydrogenation reactor welding

• Main Authors: SUN JINGDONG, YIN MAOLIN, TAN LONG, WANG TIANXIAN, HAN YUGAI, ZHAI DAHU, XU SHUNJUN, LI BIN, FAN XIBIN, JING HAITAO, TANG MINGMEI, HOU LIYANG, ZHAO PENGCHENG, DAI HAO, WU XIJUN, WU RUIPING, QUE WEIPING
• Format: Patent
• Language: Chinese; English
• Published: 06.02.2024
• 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 belongs to the technical field of welding, and particularly relates to an electromagnetic induction elimination method for arc magnetic blow-off in hydrogenation reactor welding. According to the main technical method, an induction degaussing cable is laid around a groove weld bead of a hydrogenation reactor cylinder and a tube base, and an alternating magnetic field is formed near the weld bead through medium-high frequency alternating current. When the magnetic induction intensity of the alternating magnetic field exceeds the magnetic induction intensity of a static magnetic field near a welding bead, shielding of a far-end magnetic field of a workpiece and local demagnetization of a welding area can be achieved, and stability of a backing welding direct-current arc form in the alternating magnetic field is guaranteed. According to the method, the induction degaussing coil and the welding position of backing welding are staggered all the time, it is guaranteed that degaussing operation and wel