REHM INVERTIG.PRO 240 DC Betriebsanleitung Seite 109

Operat tion
Welding g with and
without additional
material ls
Direct c urrent
welding g
Alternat ting current
welding g
Additio nal welding materials a
The co rrect materia al for the bas
can als so be achiev ved if you ju
togethe er, for examp ple, on corne
When direct curren nt welding,
minus p pole is the co older pole, th
time of f the tungst ten electrod
welding g.
When alternating current weld
influenc ced by the b balance sett
minus proportions of the weld
piece. D During the p positive half w
higher temperature e occurs at t
electrod de cools dow wn and the a
oxide s skin only nee ed a short plu
proport tion.
This ha as many ben efits:
1. the temperature e load of the e
2. the electrode ca an be loaded
3. the current rang e of the elec
4. a po ointed electro ode can be u
5. the arc is slimme er
6. the penetration i is deeper
7. the heat influenc ce zone of th
8. the welding spee ed increases
9. the application o of heat to the
Practic al values of t the balance
• with butt welds 6 60% to 70%
• with hollow seam m welds 70%
re added in stock form
sic material m must be selec
ust allow the welding bat
er seams.
the minus p pole is usua
his means th at the curren
e is consid erably great
ding, the re esilience of
ting. The bal lance setting
ing current between the
wave, the alu uminium oxid
the electrode e. During the
aluminium is s heated. Sin
us impulse, R REHM TIG u
electrode is r reduced
with a highe er current
ctrode increa ses
used for weld ding
he weld is sm maller
s
e work piece reduces
setting for al ternating cur
minus propo rtion
% to 80% min us proportio
when weld ing manually
cted. But exc cellent result
th of two pie eces to com me
ally at the e lectrode. Th
nt resilience and the stan
ter than wh en plus pol
the electrod de is heavi
g distributes the plus an
e electrode and the wor
de skin is de stroyed and
e negative h half wave, th
nce tearing t the aluminium
units can use e a high minu
rrent welding g are:
n
y.
ts
he
nd
GB
le
ly
nd
rk
a
he
m
us
45 4