In order to control the quality of straight welded pipes in order to safely carry out production operations, it is also an inevitable element of ensuring the personal safety of the operator. The application field is mainly due to large span mesh engineering, building steel structure engineering, power and ultra -high -voltage transmission and distribution engineering, mechanical engineering, cross -sea bridge, bridge, (railway station, airport, stadium steel structure engineering), municipal pipeline network, municipal pipeline network, municipal pipeline network, municipal pipeline network, Basic piles, water gas pipelines and highway construction facilities.
1. Rase whether the specifications of welding wires and welds and welds are correct according to the welding process regulations, and welding quality accidents are prevented from misunderstanding welding wires and welds.
2. Supervise the welding environment. When the welding environment is not good (the temperature is less than 0 ° C and the relative humidity is greater than 90%), the welding should be taken.
3. Check the slope size before pre -welding, including whether the gap, blunt side, angle and error mouth meet the process requirements.
4. Whether the welding current, welding voltage, welding speed and other process parameters are used in the process of buried arc automatic internal and external welding.
5. Supervise welding personnel make full use of the length of the arc of the steel pipe end to strengthen the length of the arc tube at the end of the buried arc to strengthen the use efficiency of the arc plate during internal and external welding, which helps improve the welding quality of the pipe end.
6. Whether the welding personnel first clean the residue when welding, whether the connector has been completely treated, and whether there is oil, rust, residue, water, paint and other dirt at the wound.
