Electrode Inverter | Version 1.09
7
Operating principle
6
Operating principle
The EASY-STICK welding unit is an electrode inverter
for welding with all common rutile, stainless steel and
cast iron electrodes with direct current. The required wel-
ding current can be adjusted steplessly via a control dial.
The
Hot-Start
function provides stable ignition of the arc
and the
Anti-Stick
function prevents the electrode from
sticking. These functions are automatically activated and
deactivated. The
Arc-Force
control adjusts the dyna-
mics to the welding process and can be controlled. The
unit is cooled with an air fan. If the permissible tempera-
ture of the power components is overshot, the welding
current is automatically switched off. This is indicated by
a control lamp on the control panel. The housing protects
the components against external influences and direct
contact. Depending on the application, there are different
degrees of protection against penetration by solid bodies
and water. The degree of protection is indicated by the
letters IP followed by two digits: The first digit indicates
the degree of protection against solid bodies and the se-
cond digit the degree of protection against water.
6.1 Principle of electrode welding
Electrode welding is an uncomplicated welding method
with which almost all metals can be welded. This method
can also be used outdoors and with special equipment
even under water. In electrode welding, the arc length is
determined by hand. The distance between the electro-
des determines the arc length. Welding is mainly carried
out under direct current; e.g. rutile electrodes are easy to
weld under minus-pole direct current; basic electrodes
under plus-pole direct current. The electrode is an arc
carrier and also an additional material. It consists of a
core wire and a coating. The coating protects the molten
pool from harmful atmospheric oxygen and stabilizes the
arc. In addition, a slag forms which protects and shapes
the weld seam. Depending on the thickness and compo-
sition of the coating, a difference is made between rutile
and basic electrodes. Rutile electrodes are easier to
weld and have a nice flat seam. The slag is also easier to
remove. It should be noted that many electrodes It
should be noted that many electrodes must be dried
back after prolonged storage, because moisture accu-
mulates from the air over time back after longer storage,
because moisture accumulates from the air over time.
Otherwise, electrode welding is a very common and
easy-to-use welding process.
Fig. 3: Functional principle manual arc welding
Welding current and electrode diameter:
Protect
against solid
objects over
12 mm e.g.
hands, large
tools
2
1
Protected
against
vertically
falling
dripping
water
S
Tested
when
moving
parts are
at a
standstill
IP2
1
ø
Electrode (mm)
Adjustment range of the
welding current (A)
1.60
30 - 50
2.00
40 - 70
2.50
70 - 110
3.25
110 - 140
4.00
140 - 180
5.00
180 - 200
Workpiece
Arc
Coating
Core rod
Molten bath
Gas and slag
Rod electrode
