FCW DYNA POWER 350CV, Руководство по эксплуатации

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DYNA POWER 350CV
、
503CV
、
500CV
、
630CV
、
630HCV Operating Manual
7.03 Weld Problems
Fault Cause Remedy
1. Undercut
A Welding arc voltage too high.
B Incorrect gun angle.
C Excessive heat input.
A Reduce voltage by reducing the voltage
selection switches position or increase the
wire feed speed.
B Adjust angle.
C Increase the gun travel speed and/ or
reduce welding current by reducing the
voltage selection switches position or
reducing the wire feed speed.
2. Lack of penetration
A Welding current too low.
B Joint preparation too narrow
or gap too tight.
C Shielding gas incorrect.
A Increase welding current by increasing
wire feed speed and increasing voltage
selection switch position.
B Increase the joint angle or gap.
C Change to a gas which gives higher
penetration.
3. Lack of fusion Voltage too low.
Increase voltage by increasing voltage
selection switch position.
4. Excessive spatter
A Voltage too high.
B Voltage too low.
A Lower voltage by increasing wire speed
control or reducing the voltage selection
switches.
B Raise voltage by reducing wire speed
control or increasing the voltage selection
switches.
5. Irregular weld shape
A Incorrect voltage and current
settings.
Convex, voltage too low.
Concave, voltage too high.
B Wire is wandering.
C Incorrect shielding gas.
D Insufficient or excessive heat
input.
A Adjust voltage and current by adjusting
the voltage selection switches and the
wire speed control.
B Replace the contact tip.
C Check shielding gas.
D Adjust the wire speed control or voltage
selection switches.
6. Welding cracking
A Weld beads too small.
B Weld penetration narrow and
deep.
C Excessive weld stress.
D Excessive voltage.
E Cooling rate too fast.
A Decrease the travel speed.
B Reduce current and voltage and increase
MIG gun travel speed or select a lower
penetration shielding gas.
C Increase weld metal strength or revise
design.
D Decrease the voltage by reducing the
voltage selection switches.
E Slow the cooling rate by preheating part to
be weld or cool slowly.
7. Cold weld puddle
A Faulty rectifier unit.
B Loose welding cable
connection.
C Low primary voltage.
A Have an accredited FCW service agent to
test then replace the faulty component.
B Check all welding cable connections.
C Contact supply authority.
Table 9