Stel MAX dp 171C Instrucciones Para El Uso Y El Mantenimiento página 46

TECHNICAL MAX dp 171-201C
COD. 6910700040
DESCRPTION
c) Weld material
- Many kinds of materials may be treated, however there are some basic rules :
1) the rods of weld material must have the same mechanical and chemical properties
as the material to be welded ;
2) it is recommended not to use parts of the base material, as they could contain
;
impurities due to the work process
3) if the material used has a different chemical composition, it is advisable to assess
the final characteristics of the joint, both mechanical and anti-corrosive.
d) Protection gas
- The protection gas normally used is pure argon with a quantity that varies according
to the current used (4-6 I/min).
- The TIG process is indicated for welding steel (both carbon steel and alloys), it gives
a weld with an excellent appearance which limits subsequent processing and is often
used for the first pass on pipes.
- Before every weld it is necessary to perform accurate preparation and cleaning of the
edges.
TIG WELDING ON COPPER
- Due to the properties already described, TIG welding is also excellent for working on
materials with high heat conductivity. The gas used is always argon and, in the case of
copper, the use of a reversed support is recommended.
a) Preparation of the edges for welding copper (flat butt joint).
b) Choosing and preparing the electrode
- The electrode used is of the same type described for welding steel; it is prepared as
described above.
s (mm) a (mm)
1÷3 0
4÷10 0
4÷10 0
44
ENGLISH
d (mm) α (°)
0 0
1-s/4 0
0 60÷90
STEL s.r.l. - Via del Progresso n° 59 - 36020
Loc. Castegnero (VICENZA) - ITALY
TEL. +39 0444 639525 (central.) - +39 0444 639682 (comm.)
FAX +39 0444 639641 - E-mail: stel@stelgroup.it
Web: www.stelgroup.it
MAX dp 171-201C
DEUTSCH
COD. 6910700040
11.3 AUSSETZZYKLUS (DC) UND ÜBERTEMPERATUR 11.3 AUSSETZZYKLUS (DC) UND ÜBERTEMPERATUR 11.3 AUSSETZZYKLUS (DC) UND ÜBERTEMPERATUR 11.3 AUSSETZZYKLUS (DC) UND ÜBERTEMPERATUR
Unter Aussetzzyklus versteht man den Prozentsatz von 10 Minuten, den der Bediener
beim Schweißen aussetzen muss, um keine Übertemperatur zu verursachen.
Wenn die Maschine auf Übertemperatur übergeht, beginnt die gelbe Led (Bez. 3,
Seite 92) zu leuchten.
Daraufhin ist es erforderlich, 10 Minuten abzuwarten, bevor man das Schweißen
wieder aufnimmt.
Nach der Wiederaufnahme des Schweißen ist es erforderlich, den Schweißstrom oder
den Arbeitszyklus zu vermindern.
STEL s.r.l. - Via del Progresso n° 59 - 36020
Loc. Castegnero (VICENZA) - ITALY
TEL. +39 0444 639525 (central.) - +39 0444 639682 (comm.)
FAX +39 0444 639641 - E-mail: stel@stelgroup.it
Web: www.stelgroup.it
ABBILDUNGEN
109