(1) up and down the column without ear plate side by two welders symmetrical welding on both sides of the plate thickness of 1/3, cut off the ear plate.
(2) and then cut off the ear plate side by two welders symmetrical welding on both sides of the board thickness of 1/3.
(3) by the two welders were born on both sides of the welding.
(4) between the two layers of the weld link should be staggered, the two welders welded weld joints should also pay attention to each layer staggered, the welding process to pay attention to the detection of inter-layer temperature.
(5) welding process parameters:
CO2 gas welding: wire diameter Φ1.2mm, current 280 ~ 320A, welding speed 350 ~ 450mm / min
Wire length: about 20mm, gas flow 25 ~ 80L / min,
Voltage 29 ~ 34V, interlayer temperature 120 ~ 150 ℃
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