voestalpine Böhler Welding URANOS 2000 SMC Betriebsanweisung Seite 51

Cause Damaged pressure switch.
Solution Replace the faulty component.
Cause Air pressure too high.
Solution Adjust the air flow.
Read the paragraph "Installation".
Cause Incorrect welding/cutting mode.
Solution Decrease the welding/cutting travel speed.
Cause Worn nozzle and/or electrode.
Solution Replace the faulty component.
Arc instability
Cause Insufficient shielding gas.
Solution Adjust the gas flow.
Check that the diffuser and the gas nozzle of the
torch are in good condition.
Cause Humidity in the welding gas.
Solution Always use quality materials and products.
Ensure the gas supply system is always in perfect
condition.
Cause Incorrect welding/cutting parameters.
Solution Check the welding/cutting system carefully.
Contact the nearest service centre to have the sys-
tem repaired.
Excessive spatter
Cause Incorrect arc length.
Solution Decrease the distance between the electrode and
the piece.
Decrease the welding voltage.
Cause Incorrect welding/cutting parameters.
Solution Decrease the welding/cutting voltage.
Cause Incorrect arc regulation
Solution Increase the equivalent circuit inductive value setting.
Use a higher setting inductive connection.
Cause Insufficient shielding gas.
Solution Adjust the gas flow.
Check that the diffuser and the gas nozzle of the
torch are in good conditions.
Cause Incorrect welding/cutting mode.
Solution Decrease the torch angle.
Insufficient penetration
Cause Incorrect welding/cutting mode.
Solution Decrease the welding/cutting travel speed.
Cause Incorrect welding/cutting parameters.
Solution Increase the welding/cutting current.
Cause Incorrect electrode.
Solution Use a smaller diameter electrode.
Cause Incorrect edge preparation.
Solution Increase the chamfering.
Cause Incorrect earth connection.
Solution Earth the system correctly
Read the paragraph "Installation ".
Cause Pieces to be welded/cut too big.
Solution Increase the welding/cutting current.
Cause Insufficient air pressure.
Solution Adjust the gas flow.
Read the paragraph "Installation".
Slag inclusions
Cause Poor cleanliness.
Solution Clean the pieces accurately before welding/cutting.
Cause Electrode diameter too big.
Solution Use a smaller diameter electrode.
Cause Incorrect edge preparation.
Solution Increase the chamfering.
Cause Incorrect welding/cutting mode.
Solution Decrease the distance between the electrode and
the piece.
Move regularly during all the welding/cutting
operations.
Tungsten inclusions
Cause Incorrect welding parameters.
Solution Decrease the welding voltage.
Use a bigger diameter electrode.
Cause Incorrect electrode.
Solution Always use quality materials and products.
Sharpen the electrode carefully.
Cause Incorrect welding mode.
Solution Avoid contact between the electrode and the weld
pool.
Blowholes
Cause Insufficient shielding gas.
Solution Adjust the gas flow.
Check that the diffuser and the gas nozzle of the
torch are in good condition.
Sticking
Cause Incorrect arc length.
Solution Increase the distance between the electrode and
the piece.
Increase the welding voltage.
Cause Incorrect welding/cutting parameters.
Solution Increase the welding/cutting current.
Cause Incorrect welding mode.
Solution Angle the torch more.
Cause Pieces to be welded/cut too big.
Solution Increase the welding/cutting current.
Increase the welding voltage.
Cause Incorrect arc regulation.
Solution Increase the equivalent circuit inductive value setting.
Use a higher setting inductive connection.
Undercuts
Cause Incorrect welding parameters.
Solution Decrease the welding voltage.
Use a smaller diameter electrode.
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