Lincoln Electric POWER WAVE 405M Operator'S Manual Download

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OPERATION

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bENEFITS OF PULSE ON PULSE FROM
LINCOLN ELECTRIC

• Excellent appearance of the weld bead
• Improved cleaning action
• Reduced porosity
Table B.2 shows WFS and Trim settings for common
aluminum  types  and  wire  sizes  when  welding  with
Pulse-on-Pulse. The welds made to obtain the values
in  the  table  were  fillet  welds  in  the  flat  position.  The
values in the table can be helpful as a starting point to
establish  a  welding  procedure.  From  there,  adjust-
ments  need  to  be  made  to  set  the  proper  procedure
for  each  specific  application  (out-of-position,  other
types of joints, etc.).
The  comments  on  Table  B.3  show  values  of  WFS
below which it is not recommended to weld. The rea-
son  is,  that  below  these  values  the  weld  transfer  will
change from  a    spray arc  to a short-arc,  which  is  not
advisable when welding aluminum.

TIG GTAW

The TIG mode features continuous control from 5 to
425 amps. The TIG mode can be run in either the
Touch Start TIG or Scratch start mode.

The Arc Control level selects the starting mode.

Between  –10  and  0,  the  Touch  Start  TIG  mode  is
selected.  The  OCV  is  controlled  below  10V  and  the
short  circuit  "TIG  touch"  current  is  maintained  at
approximately  25  amps,  independent  of  the  preset
current. When the tungsten is lifted, an arc is initiated
and the output is regulated at the preset value. A set-
ting  of  0,  results  in  the  most  positive  arc  initiation.  A
setting of -10 reduces hot start.

Between 0 and 10, the Scratch starting TIG mode is
selected. In this range, the OCV of the machine is
controlled between 50 and 70 volts.

SMAW

SMAW (STICK mode),

arc control adjusts the arc

force.  It  can  be  set  to  the  lower  range  for  a  soft  and
less  penetrating  arc  characteristic  (negative  numeric
values)  or  to  the  higher  range  (positive  numeric  val-
ues)  for  a  crisp  and  more  penetrating  arc.  Normally,
when  welding  with  cellulosic  types  of  electrodes
(E6010,  E7010,  E6011),  a  higher  energy  arc  is
required  to  maintain  arc  stability.  This  is  usually  indi-
cated  when  the  electrode  sticks  to  the  work-piece  or
when the arc pops-out during manipulative technique.
For low hydrogen types of electrodes (E7018, E8018,
E9018,  etc.)  a  softer  arc  is  usually  desirable  and  the
lower end of the Arc Control suits these types of elec-
trodes.    In  either  case  the  arc  control  is  available  to
increase or decrease the energy level delivered to the
arc.

ARC GOUGING

Gouging is basically removing metal to form a bevel or
groove in a piece of steel with controlled forced air
and a carbon rod.

The common procedures for Arc Gouging metal are:

• Removing poor welds from a weldment so that new

welds can be made.

• Creating a welding groove or grooves in two pieces

of steel butted together. (See Example below)

Mode 9 in the POWER WAVE 405M is specifically for
gouging.    Gouging  can  also  be  done  in  the  stick  soft
and  crisp  modes.  Setting  the  output  of  the  Stick  Soft
mode to 425 amps will enable the arc-gouging mode.
The  actual  output  current  will  depend  on  the  size  of
carbon  used.  The  recommended  maximum  size  car-
bon is 5/16".

POWER WAVE 405M

STEEL BUTTED TOGTHER

WELD GROOVES CREATED BY ARC GOUGING

STEEL BUTTED TOGTHER

WELD GROOVES CREATED BY ARC GOUGING

Aluminum 4043

Aluminum 5356

100% Ar.

E4043

E5356

0.035

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