Research on high efficiency gas-electric transverse welding equipment and process technology

• The weld obtained from the test is beautiful and reliable, and each mechanical property index meets the requirements of classification society and has a large process margin. • It can realize the welding of single-layer single pass backing weld with a thickness of 10mm, the welding efficiency ratio can be improved by up to 20%, and the one-time welding qualification rate is more than 98%. • This high-efficiency gas electric transverse welding equipment has the advantages of simple mechanism, convenient disassembly and assembly, light weight, which can greatly reduce the labor cost of workers and bring huge economic benefits to the segmentation and closure of the hull. In order to solve the problems of insufficient automation level of welding equipment, low welding efficiency and unstable welding quality in the stage of ship general assembly, efficient gas-electric horizontal welding equipment was designed and relevant process verification was carried out. After verifying the rationality and reliability of the equipment, optimizations and upgrades were made to the equipment itself and the welding process parameters. On the equipment, the high-efficiency swing mechanism, forced forming water-cooled copper block and ceramic liner were optimized and upgraded. In the experimental process, we reasonably designed key parameters such as groove form, swing amplitude, and swing frequency. Simultaneously, the feasibility and popularization of the equipment and process were further verified through 8 groups of DOE welding process tests with a plate thickness of 10-25mm. The results showed that the welds obtained from the tests were beautiful and reliable, and each mechanical property index meets the requirements of classification society and has a large process margin. It can realize the welding of single-layer single pass backing weld with a thickness of 10mm, the welding efficiency ratio can be improved by up to 20%, and the one-time welding qualification rate is more than 98%. This high-efficiency gas-electric transverse welding equipment has the advantages of simple mechanism, light weight, convenient disassembly and assembly, which can greatly reduce the labor cost of workers and bring huge economic benefits to the segmentation and closure of the hull.