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Chapter 6
W
elding Condition
S
ETTING
I
NTERNAL
F
UNCTIONS
W
ELDING
C
ONDITION
C
HAPTER
6
6.7.2.24 F33: Inhibition ratio display for [Squeeze] detection
Any shift in detecting [Squeeze] leads to spatter generation. This function enables to check the inhabitation ratio (%) of
[Squeeze] detection from the welding start to the welding completion.
•
Selecting F33 after the welding completion displays the inhabitation ratio on the right digital meter.
•
Welding operation is available with F33 selected.
•
When the welding is unstable, the inhabitation ratio may accordingly become unstable. When this happens, review
the welding condition first.
•
Even when the welding is stable, adjust the detection sensitivity of [Squeeze] using the internal functions F36 / F37
(Spatter adjustment) when the inhabitation ratio is 70% or less. (
6.7.2.27
-
F36/F37: Spatter adjustment (P1P/P2P))
T I P S
• In short arc welding where short-circuiting and arc are repeated, most of spatter is generated when
short-circuit is caused and immediately before arc generation. In the latter timing which is immediately
before arc generation, a phenomenon called [Squeeze] shown in the below figure occurs on the wire.
Detecting this [Squeeze] and rapidly decreasing current at the exact moment prevent molten metal
being blown off by arc force and enable significant suppression of generation of spatter. For this
purpose, it is important to accurately detect [Squeeze].
6.7.2.25 F34: Automatic correction of [Squeeze] detection sensitivity
Sets whether to automatically correct the detection sensitivity of [Squeeze].
•
[ON]: enables to automatically set the detection sensitivity of [Squeeze].
•
[OFF]: disables to automatically set the detection sensitivity of [Squeeze]. Using the internal function F36 / F37
(Spatter adjustment), the detection sensitivity can be manually set. (
6.7.2.27
-
F36/F37: Spatter adjustment (P1P/
P2P))
T I P S
• Although the sensitivity to detect [Squeeze] is set for each welding method and wire diameter,
optimum [Squeeze] detection sensitivity varies depending on the factors such as welding
environment (secondary cable length and routing) and welding work conditions (posture, welding
conditions such as lap and fillet, and wire extension) and inaccurate sensitivity leads to increase
of spatter.
0
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