OPERATOR’S MANUAL
·
MIG/MAG PULSE SERIES
- 19 -
Operation tips
Arc ignition in pulsed MIG/MAG
It is very important to set the arc ignition parameters in pulsed MIG/MAG, especially for welding aluminum.
The initial parameters (initial current and initial voltage) and upslope parameter (upslope time) available
for the machine should be set properly, for they affect the arc ignition performance to a great extent.
When welding aluminum, users may select higher initial current and initial voltage generally.
6.5 Parameters in double pulse MIG/MAG
There are 21 adjustable parameters in double pulsed MIG/MAG welding, namely pre-flow time, initial
current, initial speed, initial voltage, upslope time, LF peak current, LF peak speed, LF peak voltage,
thickness of base metal, arc characteristic, LF pulse duration ratio, LF frequency, LF base current,
LF base speed, LF base voltage, spot welding time, downslope time, crater current, crater speed, crater
voltage and post-flow time. 11 parameters of them, namely LF peak current, LF peak speed, LF peak voltage,
thickness of base metal, arc characteristic, LF pulse duration ratio, LF frequency, spot welding time,
crater current, crater speed, crater voltage can be operated either through the control panel on the
power supply part or through the control panel on the wire feeder part, and other parameters can be
operated only through the control panel on the power supply part. Besides, Select the desired welding
mode, base metal type, gas type, welding wire type and operation mode before any operation on parameters.
For most of the parameters in double pulse MIG/MAG, see the contents of 6.3 section for reference.
And the unique parameters in double pulse MIG/MAG are especially described as below combined with
Figure 6.4.
1) LF peak current
It is located at “peak segment-current column-current (A)”, and it is the preset current for the
LF peak value running.
2) LF peak speed
It is located at “peak segment-current column-wire feed speed (m/min)”, and it is the preset wire
feed speed for the LF peak value running.
3) LF peak voltage
It is located at “peak segment-voltage column-voltage (V)”, and it is the preset voltage for the
LF peak value running.
4) LF pulse duration ratio
It is located at “peak segment-voltage column-proportion (%)”, and it is the percentage the LF peak
value time holding in the LF duration.
5) LF frequency
It is located at “peak segment-voltage column-frequency (Hz)”, and it is the reciprocal of the LF
duration (the sum of the LF peak value time and the LF base value time).
6) LF base current
It is located at “base segment-current column-current (A)”, and it is the preset current for the
LF base value running.
7) LF base speed
It is located at “base segment-current column-wire feed speed (m/min)”, and it is the preset wire
feed speed for the LF base value running.
8) LF base voltage
It is located at “base segment-voltage column-voltage (V)”, and it is the preset voltage for the
LF base
Time
LF peak
LF duration
Figure 6.4 Welding current and welding voltage in dipulse MIG/MAG
LF peak
LF base
Current/Voltage
Summary of Contents for MIG 350P
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