No.P10224
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10. WELDING OPERATION (continued)
10.4 Characteristics of pulse arc
The waveform of pulses current can be adjusted from a robot control device while pulse
welding. Setting to HARD results in directive and deeper penetrative pulse arc. Setting to
SOFT wide and shallow penetrative pulse arc. After changing the characteristics of pulse arc,
adjust the voltage exactly due to the slight change of welding current. In this case, if the
current setting is invariable, melting amount of wire will not change. Refer to the manual of a
robot control device for details.
Standard
Hard
Soft
Note: Changing the characteristics of pulse arc may result in more spatters and dusts.
10.5 Wave pulse welding
When the PROGRAM switch is set to 11-13(DC) or 21-23(AC), wave pulse welding can be
performed. During wave pulse welding, bead appearance with beautiful scale patterns can be
obtained by periodically superimposing two different pulse conditions. Therefore, ALMINUM
welding will be effective in welding parts or couple, of which bead appearance is regarded as
important. Refer to the manual of a robot control device for details.
Note 1: Wave patterns of welding bead may not clearly appear according to input heat during
welding.
Note 2: When using soft wire, frequent short-circuit during welding may blacken the surface of
bead.
Wave patterns
A t h igh frequenc y
A t lo w freque nc y
10.6 Display of welding current and arc voltage
Use the arc monitor function of a robot to check welding current, arc voltage. Refer to the
manual of the robot for details.
