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10. OPERATION (continued)
10.1.11 Slope
setting
Slope setting “ON” and “OFF” may be selected with the SLOPE selection key [14] if the
crater setting is “ON”, “REPEAT” or “arc spot”. The LED located on the upper left corner of
the selection key indicates the status of slope setting “ON” and “OFF” when it is turned ON
and OFF respectively. If the slope setting is “ON, the parameters “upslope time (only if the
initial current setting is ON) ” and “down slope time” may be selected with the parameter
selection key [3]. But if the crater setting is “OFF”, no selection may be made with the
SLOPE selection key.
10.1.12 Crater
setting
At the end of welding, there remains a dent called
“crater”. This dent that might cause cracking or other
welding defects must be minimized in size; this
operation is called as “crater filler”.
Depressing the CRATER FILL. key [5], the crater setting is selected in the sequence
as shown below:
Crater OFF
→
Crater ON
→
Crater ON (REPEAT)
→
ARC SPOT
For crater-fill operation, select the setting “Crater ON” or “Crater on (REPEAT)”.
Crater
Initial current
Timinnig Chart
OFF
٨
The torch switch hold turned ON during weld.
ON
OFF
ON
٨
When the torch switch is turned OFF during welding, the welding current is
designed to be self-held. The torch switch must be held turned ON during initial
current and crater-fill operation.
Crater
Bead
Pool