Efficient horizontal position welding process method for pumping storage seat ring fixed guide vane

• Main Authors: DUAN WEIZAN, ZHENG HAITAO, QIAO HONGLAI, WEI FANGKAI, ZHOU YUFEI, JIA RUIYAN, ZHANG XIAODI, XU MUZHONG, TIAN JINGCHENG, LI FENGCHAO, WANG YILEI
• Format: Patent
• Language: Chinese; English
• Published: 20.07.2021
• 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 discloses an efficient horizontal position welding process method for a pumping storage seat ring fixed guide vane. Firstly, the seat ring fixed guide vane with the thickness of 150-260 mm is processed into a narrow gap groove with the width of 10-25 mm, robot narrow gap gas shield welding accessibility is simulated offline, welding path programming is carried out, two sections of a seat ring are stacked, the seat ring is placed at a horizontal position, the narrow gap groove is welded to 1/4-1/3 depth after alternate backing welding, back gouging and fillet welding are conducted on the back face, and then the narrow gap groove is welded alternately. In the welding process, two paths are welded on each layer, the lower path is welded firstly, then the upper path is welded, a robot programming position register is used for achieving welding path automatic deviation, a weld pool edge linear image obtained through a CMOS welding camera is used for judging and adjusting welding deviation, and the pr