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Used high frequency tube mills, common problems of high-frequency welding (6)——high-frequency ignition

Used high frequency tube mills, common problems of high-frequency welding (6)——high-frequency ignition

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  • Release time:2021-11-11 11:30
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【概要描述】High-frequency sparking is very common in the high-frequency welding of used high-frequency tube mills, which seriously affects the quality of high-frequency welding, and may also cause the downtime of the welding unit.

Used high frequency tube mills, common problems of high-frequency welding (6)——high-frequency ignition

【概要描述】High-frequency sparking is very common in the high-frequency welding of used high-frequency tube mills, which seriously affects the quality of high-frequency welding, and may also cause the downtime of the welding unit.

  • Sort:Information
  • Auth:
  • Source:
  • Release time:2021-11-11 11:30
  • Pvs:
Detail

High-frequency sparking is very common in the high-frequency welding of used high-frequency tube mills, which seriously affects the quality of high-frequency welding, and may also cause the downtime of the welding unit.

 

Common reasons for high-frequency sparking in used high-frequency tube mills:

1.Due to the metal oxide impurities contained in the emulsion, when the roll is cooled, part of the metal oxide causes the insulating parts to be connected to electricity.

 

2.There are burrs on the edge of the trimmed board. The board edge burrs are easy to overlap before welding the V angle, causing ignition.

 

3. In the long-term use of the FP roll, the sealing blade is severely worn, and grooves are formed at the bottom of the sealing blade. Because of the steps appearing in the groove and the unweared part, when the edge of the plate passes, under the action of shearing, a lot of the edge of the plate is produced. The generated burrs overlap in advance before welding the V angle, causing ignition (the picture below).

 

Used high frequency tube mills

 

4.Dirt generated by long-term operation accumulates near the induction coil, which is likely to be connected to electricity and cause ignition.

 

5. The components of the induction device are not installed properly, there is a virtual connection or the insulation parts are damaged in long-term operation.

 

There are many factors to judge the quality of welded pipe forming and welding of the used high-frequency tube mills, such as the shape of the strip edge, the amount of misalignment, the shape of the internal and external burrs, the amount of welding extrusion, the welding temperature, the resistance, the cooling water, and the high-frequency welding gold Phase test. only by fully understanding the various influencing factors of forming welding, can we quickly and accurately judge the welding status.

 

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Tel: +86-13392281699
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Email: zty@usedpipemill.com
Company address:No. A99, East Lecong Avenue, Lecong Town, Foshan City, Guangdong Province

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