Common problems causes and solutions of high frequency welding steel pipe

⑴ weak welding, desoldering, cold folding in the steel pipe;

reason: the output power and pressure are too small.

solution: 1 adjust the power; 2 adjust the extrusion force.

⑵ there are ripples on both sides of the weld in the steel pipe;

reason: the opening angle is too large.

solution: 1 adjust the position of the guide roller; 2 adjust the solid bending section; 3 increase the welding speed.

⑶the weld has deep pits and pinholes in the steel pipe;

reason: overburning occurred.

solution: 1 adjust the position of the guide roller and increase the opening angle; 2 adjust the power; 3 increase the welding speed.

⑷the weld burr is too high in the steel pipe;

reason: the heat affected zone is too wide.

solution: 1 increase the welding speed; 2 adjust the power.

⑸ slag inclusion in the steel pipe;

reason: the input power is too large and the welding speed is too slow.

solution: 1 adjust the power; 2 increase the welding speed.

⑹external cracks in the weld in the steel pipe;

reason: the quality of the base metal is not good; it is subjected to too much squeezing force.

solution: 1 guarantee the material; 2 adjust the extrusion force.

⑺wrong welding, lap welding in the steel pipe

reason: poor molding accuracy.

solution: adjust the forming mold roll of the unit.