大型储罐双丝埋弧横焊设备的研制

Study on tandem submerged arc horizontal welding equipment for large storage tank

为满足储罐施工企业对高质高效大型储罐环缝焊接设备的需求,研制了一套采用双电源单熔池双丝双弧埋弧焊技术的大型储罐双丝埋弧横焊设备及配套技术。针对大型储罐环缝焊接现场施工特点和条件,研发了基于林肯DC1000单丝直流埋弧焊系统和米勒SUMMIT ARC1250单丝交流方波埋弧焊系统的双电源单熔池双丝双弧埋弧横缝焊接系统、双丝电动同步升降机跟踪调节机构和正装焊车,并摸索和总结出配套的典型焊接工艺参数,使研制设备能够满足大型正装储罐现场施工要求,实现环缝的高质高效双丝埋弧自动焊接。经工程应用表明,研制设备和工艺对现有的储罐单丝埋弧横焊设备及工艺有良好的兼容性,焊接效率比单丝埋弧横焊提高50%以上,是一种便于推广应用的实用型高效横缝自动焊设备。

To meet the requirements of large storage tank girth welding equipment of high quality and efficiency,horizontal welding equipment for large storage tank and its supporting techniques with dual power single molten pool dual are welding technology was developed.Aiming at characteristics and conditions of construction of large storage tank girth welding,dual power single melton pool submerged dual arc welding system, two-wire electric synchronous regulator, and sequence welding cart were developed, basing on the LINCOLN DC1000 single wire DC submerged arc welding system and the MILLER SUMMIT ARC1250 single wire submerged arc welding system of AC square wave, Meanwhile a typical welding parameters supporting the equipments were designed and summarized. Hence the equipments can meet the large storage tank on-site construction requirements,achieve high quality and efficiency tandem submerged arc automatically welding of girth.The application shows that the equipment has good compatibility with the existing single wire welding facilities,the efficiency has been increased by fifty percent.The equipments are very convenient for application and dissemination.