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Aluminium welding

To weld with aluminum wire proceed as follows:

•

Replace the drive rolls with special ones for aluminium wire.

•

We recommend to use a torch set with a maximum lenght of
3 m and a capillary liner, e.g. DIX DSK 2-xx.

•

Set the pressure between the drive rollers at the minimum,
by turning the screw provided.

•

Use argon gas at a pressure of 1,3 - 1,7 bar and regulate
the flow to a value between 14 and 20 lit/min to suit the cur-
rent used for welding.

Electrode welding (MMA)

On the

DIX PI 3506.M I / DIX PI 3006.M I Puls / DIX PI 3506.M

I Puls

welding power source, electrode welding is used to weld

most metals (different types of steel, etc.) using coated rutilic
and basic electrodes with diameters ranging from Ø 1.6 mm to
Ø 6 mm, and devices that the user can adjust for “Arc Force”,
“Hot Start”, and Anti-sticking functions to avoid the electrodes
sticking.
1) Connecting the welding cables (Fig. E):

Disconnect the welding power source from the mains pow-
er supply and connect the welding cables to the output
terminals (Positive and Negative) of the welding welding
power source, attaching them to the clamp and ground
with the polarity specified for the type of electrode being
used (Fig.E). Always follow the electrode manufacturer’s
instructions. The welding cables must be as short as pos-
sible, they must be near to one another, positioned at or
near floor level. Do not touch the electrode clamp and the
ground clamp simultaneously.

2) Switch the welding welding power source on by moving the

power supply switch to I (Pos. 7, Fig. B).

3) Make the adjustments and do the parameter settings on

the control panel.

4) Carry out welding by moving the torch to the workpiece.

Strike the arc (press the electrode quickly against the met-
al and then lift it) to melt the electrode, the coating of which
forms a protective residue. Then continue welding at an in-
clination of about 60° compared with the metal in relation
to the direction of welding.

PART TO BE WELDED

The part to be welded must always be connected to ground
in order to reduce electromagnetic emission. Much attention
must be afforded so that the ground connection of the part to
be welded does not increase the risk of accident to the user or
the risk of damage to other electric equipment. When it is nec-
essary to connect the part to be welded to ground, you should
make a direct connection between the part and the ground
shaft. In those countries in which such a connection is not al-
lowed, connect the part to be welded to ground using suitable
capacitors, in compliance with the national regulations.

WELDING PARAMETERS

Table 3 shows some general indications for the choice of elec-
trode, based on the thickness of the parts to be welded. The
values of current to use are shown in the table with the respec-
tive electrodes for the welding of common steels and low-grade
alloys. These data have no absolute value and are indicative
data only. For a precise choice follow the instructions provided
by the electrode manufacturer.
The current to be used depends on the welding positions and
the type of joint, and it increases according to the thickness and
dimensions of the part.
The current intensity to be used for the different types of weld-
ing, within the field of regulation shown in table 4 is:

•

High for plane, frontal plane and vertical upwards welding.

•

Medium for overhead welding.

•

Low for vertical downwards welding and for joining small pre-
heated pieces.

A fairly approximate indication of the average current to use in
the welding of electrodes for ordinary steel is given by the fol-
lowing formula:

I = 50 × (Øe - 1)

Where:
I = intensity of the welding current
Øe = electrode diameter
Example:
For electrode diameter 4 mm

I = 50 × (4 - 1) = 50 × 3 = 150A

FIG. E

Table 3