Parweld DP231C, Руководство пользователя

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WELDING
PROCESS
Front
14 di Fig.1
Front socket -
12 di Fig.1
TIG CAVO MASSA
CAVO
TORCIA
13. TIG WELDING To select this welding mode :
turn switch 10, select TIG and press confirm.
Inert gas (Argon) welding with an infusible
Tungsten electrode and arc (often call TIG
(Tungsten Inert Gas) for short, is a welding
procedure whereby the heat is produced by an
arc that strikes between a tungsten electrode
(which is not consumable) and the workpiece.
The welding is carried out by fusing the edges
of the workpiece or by adding other filler material
using specific types of rod to create a joint. The
torch is ignited by touching the workpiece with
the electrode and then lifting. The TIG procedure
can be adapted to any work position and can
also be applied to very thin sheets of metal (0,2-
0,3 mm). The TIG procedure is distinguished by
the ease with which the arc can be controlled, a
powerful and concentrated thermal source and
the simple manner in which the filler material can
be controlled. This makes the TIG procedure
particularly suitable for precision welding on a
wide variety of thicknesses, in difficult positions
and on pipes which require full penetration. The
TIG procedure can be used on various types of
metals, such as, ferrous materials, alloys, nickel,
copper, titanium, magnesium. During welding,
potentiometer 9 in fig. 1, for example, regulates
the welding current. The correct connection of the
torch and earth cable is shown in the following
table:
13.1 TIG WELDING (Lift-Arc) Button 9 controls
the current and the machine power.
Select this option and the welding screen will
appear:
Make sure that the pulse setting is switched off.
If not, use the menu and set the option PULSE
to OFF, as shown in the above figure. During
welding it is possible to adjust the current using
button 9 in fig. 1. Both the welding current values
and the relative arc tension used will be displayed
continually on the screen.
ADJUSTMENTS AND SETTINGS:
Button 10 adjusts the welding settings on the
screen: prolonged pressure on the torch trigger
will stop the welding process.
2t-4t-4bilevel: This function sets the 2 tempi or 4
tempi mode.
2t: In 2 tempi mode, the machine welds for the
entire time the torch trigger is pressed down.
4t: In 4 step mode, pressing the torch trigger
once starts the welding process; press the button
again to stop welding.
4Bi: In 4 step Bi-Level mode, press the torch
trigger once to start welding. Successively, brief
pressure on the trigger (less than 1s) makes the