轧钢机机架,我厂原是整体铸造生产的,在生产中其中一个机架的头部,出现严重的铸造裂纹,采用手工焊自动焊修补均不可能。为了节约原材料,缩短制造周期,经厂部决定,采用电渣焊修复。把有缺陷的机架头部气割割去,另重新铸造一个机架头部,然后与机身进行电渣焊接。轧钢机架加工后的净重127吨,材质35号铸钢,其电渣焊断面为两个805×730毫米。这种结构的电渣焊,我厂没有干过。在兄弟厂都是采用双丝熔咀电渣焊法,两断面同时施焊,在每个电渣焊断面上布置6块熔咀板,12根焊丝,需两台专用多丝送丝机。当时我厂 Rolling mill frame, I was originally the overall casting factory production, in the production of one of the head of the rack, a serious casting cracks, the use of manual welding automatic welding repair are impossible. In order to save raw materials, shorten the manufacturing cycle, the decision of the factory, the use of electroslag welding repair. Cutting the defective head of the machine and cutting the head of another machine, then electroslag welding with the machine body. The net weight of the rolling stands is 127 tons. The material of No. 35 cast steel has two electroslag welding sections of 805 × 730 mm. This structure of electroslag welding, I plant did not dry. In the brothers plant are using double-wire melting Tsui electroslag welding method, the two sections at the same time welding, in each electroslag welding section layout of six melt Tsui board, 12 welding wire, need two special multi-wire feeder. At that time I plant