锅炉筒体内环焊缝埋弧自动焊机

Research on submerged arc welding machine designed on inner circular welding for the boiler

普通的埋弧焊接小车和焊接操作架无法进入锅炉筒体内实施焊接,锅炉筒体组合最后一道内环焊缝的焊接一直采用手工焊接。研发的锅炉筒体内环焊缝埋弧自动焊机的核心部分为焊接小车、焊缝跟踪器和焊枪调整机构,焊接电源、筒体转胎和焊丝盘为常规设备。其创新之处在于:一是焊接小车体积小、质量轻,一个工人即可将其搬出、入筒体人孔;二是焊接小车配置了功能完善的机械式焊缝跟踪器,保证焊接小车始终准确可靠地与焊缝平行等距行走,即保证在焊接过程中焊枪始终不偏离焊缝。实现了焊缝的优质高效自动化焊接,焊缝探伤合格率达98%以上,焊缝宽度均匀,表面光滑美观,填补了此项焊接专机在国内的空白。

Because ordinary submerged arc welding carriage and welding operation frame could not go into the boiler the cylinder for inner welding,the final inner welding seam has been using manual welding.The core part of developed boiler cylindrical shell inner weld seam submerged arc welder are the welding carriage,seam tracking device and welding torch regulator,the welding power source, barrel turn tire and wire reel are conventional equipments.The innovation of this research are those：First, welding carriage has small size,lightweight,only one worker can move into and out of the cylinder manhole ;Second,the welding carriage is configured a fully functioning mechanical welding seam tracker,ensuring that the car always reliable way and weld parallel isometric moving, namely that welding torch always not deviating from the welding seam in the welding process.Realize the welding line of automatic welding quality and effficient,weld qualified rate above 98% ,and the weld width uniformity,the surface is smooth and beautiful,fill the welding machine in domestic blank.