‐
13
‐
PATON
PRO-series
DC
MMA/TIG/MIG/MAG
neg,
and
the
smaller
is
the
"butt"
withstanding
set
current,
the
better.
Remember
that
a
very
sharp
‐
pointed
electrode
flashes
off
very
easily
at
high
arc
currents
due
to
low
heat
emission.
In
addition,
sharpening
notches
shall
be
located
along
the
electrode
axis.
4.1.
WELDING
CYCLE
–
TIG
‐
LIFT
See
paragraph
6.1
for
sequence
of
changing
the
value
of
any
function
4.2
TIG
‐
LIFT
ARC
STRIKING
FUNCTION
This
function
is
installed
by
default
in
this
model
of
equipment
and
is
designed
for
torches
with
contact
arc
striking,
without
use
of
high
‐
frequency
injection
units
and
other
similar
units.
However,
unlike
the
conventional
method,
it
completely
eliminates
surge
current
in
the
moment
of
striking,
thus
reducing
several
‐
fold
destruction
of
the
non
‐
consumable
tungsten
electrodes
and
ingress
of
its
inclusions
into
the
weld,
which
is
very
adverse
effect.
ATTENTION:
The
work
piece
must
be
cleaned
in
the
place
of
arc
striking.
This
function
is
implemented
by
touching
the
work
piece
with
the
element.
The
user
can
keep
the
electrode
in
this
position
for
an
unlimited
time,
and
when
he/she
decides
that
he/she
is
ready
to
proceed
with
welding
(for
example:
he/she
has
covered
the
eyes
with
a
headshield
and
sufficiently
purged
the
place
of
welding
with
shielding
gas),
it
is
enough
to
start
SLOWLY
lifting
the
tip
of
the
sharpened
electrode
from
the
work
piece.
The
machine
will
detect
this
moment
and
take
it
as
a
signal
to
start
the
welding
process.
Thus,
it
will
start
FADING
arc
current
up
to
the
set
value.
The
higher
is
base
operating
current,
the
faster
the
electrode
shall
be
lifted,
otherwise
it
will
flash
off.
You
shall
get
used
to
the
optimum
electrode
detachment
speed.
Time
of
current
fade
‐
in
[t.uP]
up
to
the
set
value
will
be
reviewed
in
the
next
paragraph.
4.3
ARC
CURRENT
FADE
‐
IN
FUNCTION
Except
for
saving
operating
life
of
the
electrode
and,
to
some
extent,
of
the
torch
itself,
this
function
is
also
requires
for
convenient
use
of
the
torch.
It
eliminates
initial
splashing
of
weld
pool.
In
addition,
one
can
guide
the
torch
exactly
to
the
t
s
Содержание PRO-160
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