Welding Table; Connection For Mma Welding; Igniting The Mma Arc - Fimer T 422 Manuel D'emploi

4. WELDING TABLE

Use the table below to calculate the
welding current, according to the type of
electrode used:
WORKPIECE WELDING
THICKNESS CURRENT
mm
2.0 45 ÷ 60
2.5 60 ÷ 100
3.25 90 ÷ 140
4.0 140 ÷ 170
5.0 190 ÷ 230
5. CONNECTION FOR MMA
WELDING
The Dinse connector is inserted by lining-up
the key with the groove and turning the
connector in a clockwise direction until it
stops.
The electrode clamp holder and earth must
be connected to the '+' and '-' terminals,
according to the specifications of the
electrodes used.
8
ELECTRODE
LENGTH
A mm
300
300
450
450
450
6. IGNITION OF THE MMA ARC
IGNITION
Create the contact for
igniting the arc at a
distance
approximately 5 cm from
the initial welding point.
Immediately move the
electrode towards the
workpiece,
touching it, in order to
keep the arc ignited.
Quickly
electrode,
turning
towards the point where
the welding seam will
begin.
Begin welding, advancing
slowly.
The distance between
the tip of the electrode
and the workpiece must
be
possible to the diameter
of the electrode in use.
OFF
This is carried out by stopping a while over
the last crater (i.e. the end of the welding
seam), returning slowly on the previously
deposited seam for approximately two
centimetres and, only at this point, moving
the electrode away from the workpiece to
turn off the arc.
of
without
bring the
without
off the arc,
as identical as