PATON
PRO-series
DC
MMA/TIG/MIG/MAG
‐
14
‐
required
welding
place
during
the
set
time
of
current
fade
‐
in
[t.uP],
since
the
place
of
arc
striking
on
critical
‐
duty
work
pieces
is
not
always
coincident
with
the
place
of
welding.
Place
of
welding
can
also
be
preliminarily
heated.
By
default,
the
time
is
set
to
1.0
s.
See
paragraph
6.1
for
sequence
of
changing
the
value
of
any
function
in
the
current
welding
mode
4.4
PULSED
CURRENT
WELDING
FUNCTION
This
function
is
designed
to
facilitate
control
over
welding
process
in
spatial
positions
other
than
downhand
position,
as
well
as
during
welding
of
non
‐
ferrous
metals.
This
function
affects
directly
weld
metal
dilution
and,
consequently,
on
stability
of
weld
forming.
It
substitutes
movements
of
welder's
hand
to
some
extent,
which
is
especially
important
in
hard
‐
to
‐
reach
places.
It
also
somewhat
forces
drop
transfer
from
the
filler
wire
into
the
weld
pool.
Correct
setting
determines
weld
shape
and
quality
of
weld
forming,
thus
reducing
risk
of
porosity
and
grain
structure
of
the
weld
and
consequently
increasing
weld
strength.
In
order
to
implement
this
functions,
three
parameters
must
be
set
in
the
machine:
pulsing
power
[Po.P],
pulsing
frequency
[Fr.P]
and
mark
‐
to
‐
space
ratio
(or
duty
ratio)
[dut].
By
default,
pulsing
power
[Po.P],
which
is
the
key
parameter,
is
set
to
"OFF"
position,
i.e.
disabled,
while
pulsing
frequency
[Fr.P]
and
duty
ratio
[dut]
are
set
to
most
common
values
of
10.0
Hz
and
50%
respectively.
In
order
to
enable
this
function,
it
is
enough
to
set
pulsing
power
[Po.P]
to
a
value
above
zero.
This
parameter
is
set
in
percent
of
current
set
value
of
base
arc
welding.
Example:
welding
with
a
non
‐
consumable
tungsten
electrode
of
2
mm
in
diameter,
set
base
value
of
arc
current
is
100
A,
and
pulsing
power
[Po.P]
=
30%,
while
pulsing
frequency
[Fr.P]
=
10.0
Hz
and
duty
ratio
[dut]
=
50%
by
default.
Result:
current
will
pulse
in
the
range
from
70
A
to
130
A
with
frequency
of
10
Hz,
pulses
will
be
of
the
same
shape
in
terms
of
both
magnitude
and
time.
The
duty
ratio
parameter
is
set
to
50%
by
default.
If
this
parameter
is
changed
to
a
value
other
than
50%,
current
pulse
time
and
current
pause
time
become
asymmetric:
by
default
duty
ratio
[dut]
=
50%
duty
ratio
[dut]
=
20%
duty
ratio
[dut]
=
70%
In
this
case,
the
machine
will
calculate
the
mode
in
such
a
way,
that
average
current
level
of
the
welding
process
will
be
at
the
level
of
the
set
base
arc
current
of
100
A
(as
it
was
set).
Accordingly,
heat
input
into
the
weld
will
remain
at
the
level
of
100
A,
but
stability
of
the
welding
process
and
dilution
in
the
welding
pool
will
t,
s
t,
s
Содержание PRO-160
Страница 1: ......
