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OPERATION
OVERVIEW OF WELDING
PROCEDURES
FLUX CORED ARC WELDING (FCAW) AND GMAW PROCEDURES
For each wire feed speed, a corresponding voltage is preprogrammed into the machine by welding experts. This preprogrammed voltage is the best average volt- age for the procedure at the given wire feed speed. If the wire feed speed is changed on the wire feeder, the voltage automatically changes with it.
In some cases, the operator may want to change the preprogrammed voltages; for example, to compensate for cable and fixture voltage drops. The preset voltages can be adjusted on the wire feeder’s Voltage display. When a change is made to the voltage at one wire feed speed, this change is applied to all other wire feed speed settings. For example, if the operator turns up the voltage by 10 percent, the machine automatically increases the preset voltages at all the other wire feed speeds by 10 percent. In the GMAW and FCAW process, the display shows The Procedure Description, WFS and Preset Voltage. The preset voltage which was
default preset voltage up or down a respective “ ” or “ ” V sign will be
gun trigger is pulled note that the display changes to show WFS, Actual Arc
PULSE PROCEDURES
In these procedures, the actual voltage greatly depends on the waveform used. The peak currents, background currents, rise times, fall times, and pulse times all affect the actual
The arc length can be adjusted between 0.5 and 1.5 on the wire feeder’s Voltage display. An arc length trim of
1.0means that no adjustments will be made to the pre- set arc lengths. An arc length trim greater than 1.0 increases the preset arc lengths. An arc length trim less than 1.0 decreases the
speed settings.
Increasing the arc length by 10 percent at a given wire feed speed also increases all the other arc length set- tings of the procedure by 10 percent. In the Pulse process, the display shows the Procedure Description, WFS and Arc Length Trim. Arc length trim is pro- grammed to a default at the factory and may be adjust- ed on the wire feeder. When the trigger is pulled, the WFS, Actual Arc Voltage and Actual Arc Current are
Stick / TIG
PROCEDURES
Stick welding can be performed with the Power Wave 450 by attaching a remote control kit to the
See Tables B.3 and B.4 for a summary of the informa- tion discussed above.
WAVE CONTROL
The wave control settings of all procedures can be changed on the Power Wave 450 GMAW Pulse, GMAW and FCAW, Stick Process Selection Overlay. The wave control is a setup parameter that may be adjusted when the welding procedures are set. This feature