technical requirements of steel structure welding,Suzhou welding processing,pipeline welding technology,Luoyang Tuoqi
- Post Date: Oct 24,2012
- Expiry Date: Oct 24,2013
- Price Terms: consultation
- Pachaging: according to your order
Two shielded welding, namely CO2 semi-automatic gas shielded welding process, is suitable for low carbon steel and high strength low alloy steel various kinds of large steel structure engineering welding.The welding productivity is high, the anti-crack performance is good, the welding deformation is small, and it adapt to the large deformation range,and the welding of sheet and medium thickness plate is available.
1. Vertical or inclined position bevelled joint must be welded from the bottom up , to not bevelled sheet butting and fillet welding ,we can use downward welding; To flat, horizontal, elevated butt joint ,we can use leftward welding method .
2.Outdoor work should use wind measures when the speed of the wind is greater than 1 m/s.
3.We must choice the reasonable welding sequence according to the structure of the workpieces.
4.Butt ends shall set up suitable size starting weld tab and arc blowout plate.
5.The dirt in the flexible tube should be clean up in time.
6.A groove of the plate joint, especially thick plate of multichannel weld, wire swing in the groove sides should make a little stay, zigzag stretch every layer thickness is not more than 4 mm, in order to make weld fusion is good.