Quality Control of High Frequency Straight Seam Welded Pipe in Processing

Keywords:Quality Control of High Frequency Straight Seam Welded Pipe in Processing
High frequency straight seam welded pipe to control the quality, in order to safely carry out production operations, but also to ensure the operator an essential element of personal safety. The main fields of application include large-span grid project, construction of steel structure project, electric power and EHV transmission and distribution project, mechanical engineering, bridge, bridge, railway station, airport, stadium steel structure project, municipal pipe network, Foundation piling, water gas pipeline and highway construction and other supporting facilities.

1, According to the welding technical specification review wire and flux standards is not accurate, to avoid misuse of welding wire and flux caused by welding quality accident.

2, The welding environment supervision, when the welding environment is not good (temperature below 0 ℃, relative humidity greater than 90%) should be adopted after the appropriate measures for welding.

3, Pre-weld before checking the groove scale, including the gap, the blunt side, the view point and the wrong port is not fit the technical request.

4, Submerged arc in the active and in the process of welding the selected welding current, welding voltage, welding speed and other technical parameters is not accurate.

5, Supervise the welding personnel in the submerged arc welding, take full advantage of the steel tube side of the arc plate length, to strengthen the welding table when the use of arc power, which helps to improve the quality of the pipe end welding.

6, The supervision of welding personnel in the welding is not the first slag finishing clean, is not fully processed joints, groove is not oil, rust, slag, water, paint and other dirt.
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