Fimer T 422, Инструкция по эксплуатации

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8
4. WELDING TABLE
Use the table below to calculate the
welding current, according to the type of
electrode used:
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.
6. IGNITION OF THE MMA ARC
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.
WORKPIECE
THICKNESS
WELDING
CURRENT
ELECTRODE
LENGTH
mm A mm
2.0 45 ÷ 60 300
2.5 60 ÷ 100 300
3.25 90 ÷ 140 450
4.0 140 ÷ 170 450
5.0 190 ÷ 230 450
Create the contact for
igniting the arc at a
distance of
approximately 5 cm from
the initial welding point.
Immediately move the
electrode towards the
workpiece, without
touching it, in order to
keep the arc ignited.
Quickly bring the
electrode, without
turning off the arc,
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 as identical as
possible to the diameter
of the electrode in use.
IGNITION