1. Standardize Wire Storage and Pre-treatment
Flux Cored Wire is sensitive to its storage environment. Moisture can cause the internal arc stabilizer to fail, leading to arc interruption. The wire should be stored in a dry, well-ventilated warehouse, with humidity controlled within a suitable range, and packaging should be protected from damage. Before use, inspect the wire surface. If rust or moisture is found, dry it to restore conductivity and arc stabilization. Avoid direct contact with the wire to prevent sweat residue from causing corrosion and affecting welding stability.
2. Optimize Equipment Parameter Matching
Mismatch between welding current and voltage is a common cause of arc interruption in Flux Cored Wire. Excessive current causes the wire melting rate to far exceed the wire feed rate, easily leading to arc interruption at the top wire. Excessive voltage lengthens the arc, making droplet transfer unstable. Parameters should be adjusted according to the wire diameter. Generally, smaller diameter wires require lower current and voltage, while larger diameter wires require appropriately higher parameters. Simultaneously, check the wire feeding mechanism to ensure the wire feeding wheel pressure is moderate and matches the welding wire diameter, preventing wire slippage or deformation and ensuring a stable and uniform wire feeding speed.
3. Maintain the welding equipment condition.
Wear on the wire feeding hose, blockage of the contact tip, or excessive wear can all hinder the smooth delivery of Flux Cored Wire, causing arc interruption. Regularly clean debris from the inside of the wire feeding hose; replace it promptly if grooves appear on the inner wall. The contact tip needs to be inspected regularly, cleaning any internal metal slag. When the wire feeding hole is severely worn, replace it with a contact tip of the appropriate model to ensure a smooth wire feeding path. Additionally, check the welding machine power connection to prevent voltage fluctuations from affecting arc stability.
4. Standardize welding operation techniques.
Improper welding torch angle, height, and movement speed can also cause Flux Cored Wire arc interruption. Maintain a suitable angle between the welding torch and the workpiece during welding, avoiding excessive tilting, and control the torch height to keep the arc length within a reasonable range. The torch movement speed should be uniform and stable, avoiding being too fast or too slow, to ensure complete fusion of the molten pool. During welding, try to keep the welding torch moving in a straight line or at a large angle to reduce the resistance of the welding wire within the wire feed hose and ensure smooth wire feeding.
If you would like to learn more about Flux Cored Wire, please feel free to contact us! We have extensive industry experience and a professional engineering team, and we sincerely invite you to join us in our development!
