Welding Methods And Output Waveform - Panasonic YC-300BP2YAF Operating Instructions Manual

4.2 Welding methods and output waveform

Note
In the case of special metal, etc., welding results may be different from your requirement.
Welding method
DC TIG
The polarity is electrode
A rectangular wave with the
Standard
same peak value of output
current for both electrode
minus (DCEN) and elec-
trode plus (DCEP) periods.
AC
TIG
Hard
Shows a pulse overlap
Soft
A sine wave for electrode
minus (DCEN) and elec-
trode plus (DCEP) periods.
OMCTT5639E09
The "applicable material" section of the following table lists the general material.
Output waveform
Main materials
(Image)
Stainless steel
minus (DCEN).
waveform.
• Widely used for metal other than aluminum in
TIG welding.
• An arc-start method is selectable according to
applications.
• When the pulse is set to "OFF":
Stable DC output is available for any current
including low current and high current.
Mild steel
• When the pulse is set to "ON":
Copper
Pulse frequency: 0.8 to 25Hz
Titanium
Suitable for the welding of a joint between a thick
Brass
plate and a thin plate, which have considerable
difference in their thermal capacity, and the weld-
ing that requires wave-patterned bead or pene-
tration welding.
Pulse frequency: 10 to 500Hz
Suitable for the thin plate welding, fillet welding
and butt welding.
• The general AC TIG welding can be done widely
for the range of material from thin plates to thick
plates.
• Applying the pulse "present" mode works better
in the welding of a joint between a thick plate and
a thin plate, which have considerable difference
in their heat capacity. (Use the pulse frequency of
0.8 to 25Hz.)
• Arc with high heat input and strong convergence
is available. (Suitable for welding with narrow
bead width.)
Aluminum
Magnesium
• Suitable for the gap welding of a thin plate.
Brass
• Suitable for the fillet welding of an intermediate
plate.
• Using the pulse "present" mode enables the
welding of a joint created by plates with different
thickness as well.
• Soft arc is available.
• (Suitable for welding with wide bead width.)
• Suitable for the butt welding of an intermediate
plate.
Names and Functions
Features
21