Stel MAX dp 171C Instrucciones Para El Uso Y El Mantenimiento página 41

MAX dp 171-201C
ÍNDICE
COD. 6910700040
ÍNDICE GENERAL ÍNDICE GENERAL
ÍNDICE GENERAL ÍNDICE GENERAL
1.0 SEGURIDAD
1.1 ADVERTENCIAS
1.2 INSTRUCCIONES PARA LA SEGURIDAD
2.0 ESPECIFICACIONES
2.1 CARACTERÍSTICAS GENERALES
2.2 CARACTERÍSTICAS ELÉCTRICAS
3.0 RECEPCIÓN
3.1 RECEPCIÓN DEL MATERIAL
3.2 RECLAMACIONES
4.0 CONEXIÓN
4.1 CONEXIÓN PRIMARIA Y ACOPLAMIENTO
4.2 PUESTA A TIERRA
4.3 ADVERTENCIA DE COLOCACIÓN PRECARIA
5.0 PUESTA EN SERVICIO
5.1 MANDOS DEL PANEL FRONTAL
5.2 DESCRIPCIÓN SÍMBOLOS DE LA PLACA DE DATOS
5.3 DISPOSICIÓN DE SOLDADURA POR ELECTRODOS (MMA)
5.4 DISPOSICIÓN DE SOLDAURA TIG
6.0 SOLDADURA POR ELECTRODO (MMA)
6.1 PROCEDIMIENTOS DE LA SOLDADURA POR ELECTRODO
6.2 FASES DE LA SOLDADURA POR ELECTRODO
7.0 SOLDADURA TIG
7.1 PROCEDIMIENTOS DE LA SOLDADURA TIG
7.2 FASES DE LA SOLDADURA TIG
8.0 DESCRIPCIÓN DE LAS FUNCIONES DE SOLDADURA
8.1 SOLDADURA POR ELECTRODO
8.2 SOLDADURA POR ELECTRODO CELULÓSICO (CEL)
8.3 SOLDADURA TIG
9.0 PREDISPOSICIÓN DEL MANDO A DISTANCIA/SOPLETE UP-DOWN
10.0 V.R.D.
10.1 GESTIÓN DEL V.R.D.
10.2 ACTIVACIÓN DEL V.R.D.
10.3 DESHABILITACIÓN DEL V.R.D.
11.0 FIGURAS
11.1 DISTANCIAS POSTERIORES Y LATERALES A MANTENER DURANTE LA SOLDADURA
11.2 SEÑALES DE SEGURIDAD
11.3 CICLO DE INTERMITENCIA Y SOBRETEMPERATURA
11.4 CURVAS DE TENSIÓN - CORRIENTE (VOLTIOS - AMPERIOS)
12.0 INCONVENIENTIES DE SOLDADURA Y DE FUNCIONAMIENTO
12.1 POSIBLES DEFECTOS DE SOLDADURA
12.2 POSIBLES INCONVENIENTES DE FUNCIONAMIENTO
12.3 MANTENIMIENTO ORDINARIO
13.0 LISTA DE COMPONENTES Y DIBUJOS DE DESPIECE
13.1 LISTA DE COMPONENTES
13.2 DIBUJO DE DESPIECE MAX dp 171/201C
14.0 ESQUEMAS ELÉCTRICOS
14.1 ESQUEMA ELÉCTRICO GENERAL MAX dp 171C
14.2 ESQUEMA ELÉCTRICO GENERAL MAX dp 201C
14.3 ESQUEMA CONEXION DE ALFILERES DE LAS UNIONES
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ESPAÑOL
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
ENGLISH
COD. 6910700040
6.0 ELECTRODE WELDING (MMA) 6.0 ELECTRODE WELDING (MMA) 6.0 ELECTRODE WELDING (MMA) 6.0 ELECTRODE WELDING (MMA)
6.1 PROCEDURES AND TECHNICAL DATA FOR EL 6.1 PROCEDURES AND T 6.1 PROCEDURES AND T 6.1 PROCEDURES AND T ECHNICAL DATA FOR EL ECHNICAL DATA FOR EL ECHNICAL DATA FOR ELECTRODE
WELDING WELDING WELDING WELDING
- Arc welding with coated electrodes is a procedure with which two metal parts are
joined by exploiting the heat generated by an electric arc which is sparked between a
fusible electrode and the material to be welded.
- Current generators for the electric arc (welding machines) may be fed with direct
current or alternating current; the former can weld any kind of electrode, while the latter
can weld only electrodes intended for alternating current.
- The constructive characteristic of these generators ensures an excellent degree of
stability of the arc even when its length varies as the electrode moves closer or farther
away, due to the movement of the welding operator's hand.
- The electrode is composed of two fundamental parts:
a) the core, which is of the same material as the base (aluminium, iron, copper,
stainless steel) and has the function of inserting material in the join.
b) the coating, composed of various mineral and organic substances mixed together; its
functions are:
- Gas protection. A part of the coating, volatised at arc temperature, sends air away
from the welding zone, creating a column of ionised gas which protects the molten
metal.
- Supply of bonding and scarifying elements. A part of the coating melts and supplies
elements to the weld pool which combine with the base material, forming slag.
- It may be said that the manner of melting and the characteristics of the deposit of each
electrode derive from the type of coating and from the core material.
- The principal types of coating are:
- Acid coatings. These coatings offer good weldability and may be used with either
alternating current or direct current, with the electrode gun connected to the negative
pole (direct polarity). The weld pool is very fluid, so electrodes with this coating are
essentially suitable for welding on a flat surface.
- Rutile coatings. These coatings give the weld seam an extremely good appearance,
so they are widely used. They can weld with either alternating current or direct current,
with both polarities.
- Basic coatings. These are used essentially for welds with a good mechanical quality,
even though the arc tends to splash and the appearance of the weld seam is inferior to
that produced with the rutile type. They are generally used with direct current, with the
electrode on the positive pole (inverse polarity), even though there are basic electrodes
for alternating current. Basic coatings are very greedy for humidity, so they must be
kept in a dry place, in well closed boxes.
It must also be remembered that steels with a carbon content of more than 0.6% must
be welded with special electrodes.
- Cellulose coatings. These are electrodes that weld with direct current, connected to
the positive pole; they are essentially used for welding pipes, on account of the viscosity
of the pool and the high degree of penetration. They need generators with suitable
properties.
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
TECHNICAL
DESCRIPTION
ECTRODE ECTRODE ECTRODE
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