(1) up and down the column ear plate side by two welders in bilaterally symmetrical weld to a thickness of 1/3, cut ear board.
(2) and then cut off the ear plate side symmetrical on both sides by two welders welding to thickness of 1/3.
(3) borne by two welders were welding adjacent sides.
(4) each between the two layers of weld joints should be staggered, and the two welder weld joints should also pay attention to each layer staggered Welding Wire should pay attention to the temperature detection layer.
(5) welding process parameters
CO2 arc welding: wire diameter Φ1.2mm, current 280 ~ 320A,Welding Flux  speed 350 ~ 450mm/min
Wire extension length: about 20mm, the gas flow 25 to 80L/min
Voltage 29 ~ 34V, interpass temperature 120 to 150 ° C