INTRODUCTION TO LATEST
SHIELDED METAL ARC
WELDING (SMAW)
EXAM
Twist Head & Jaw type
Two most common types of electrode holders
Arc Voltage
The moment the circuit is closed, the voltage drops to what is called
_____________
SMAW
Shielded Metal Arc Welding
Voltage
The pressure of water in a pipe is to electricity
Work
In order to be performed current must flow through the conductors in a
closed electrical circuit.
Amperage
The flow of water in a pipe is to electricity
SMAW Parts
A Power source
A ground cable or clamp
END OF
PAGE
1
, INTRODUCTION TO LATEST
SHIELDED METAL ARC
WELDING (SMAW)
EXAM
An electrode Cable
A welding electrode and electrode holder
The workpiece
Open Circuit Voltage
The voltage present when the welding machine power switch is in the
ON position, but no welding is taking place. It is at is maximum.
5532°C - 6632°C
The heat generated as the current crosses the arc from the electrode to
the workpiece.
The weld deposit is made up of metal from where
As the electrode melts (5532°C - 6632°C) the parent metal and the
electrode small particles of molten metal are carried across the arc
stream and deposited in the molten pool on the parent metal.
Mixture of the electrode and the parent metal.
A mix of the melted electrode and the melted parent ,metal
Parent Metal
END OF
PAGE
2
, INTRODUCTION TO LATEST
SHIELDED METAL ARC
WELDING (SMAW)
EXAM
Metal in the workpiece directly beneath the arc.
Penetration
The force of the arc digs into the workpiece and provides the necessary
depth of _______________ for the weld.
Flux
Covers the SMAW Electrode
Electrodes
Core of solid metal wire or a metal tube containing metal powder. The
core conducts the current to the arc and also provides filler metal for the
weld joint.
Filler
Is deposited as the electrode is gradually consumed and the welder
moves the arc over the workpiece (at the correct arc length and travel
speed)
Coating (Flux)
Helps keep the arc stable and concentrated. As the chemicals in the
coating are vaporized they provide shielding required to protect the
molten metal from contamination by atmosphere.
END OF
PAGE
3
, INTRODUCTION TO LATEST
SHIELDED METAL ARC
WELDING (SMAW)
EXAM
Power Source
May supply either DC or AC and have controls so the current can be
varied in order to meet the requirements of different welding tasks,
materials and positions.
Arc Welding Station
Arc Welding Machine
Arc Welding Station
Workbench
Arc Welding Station
Electrode holder
Arc Welding Station
Stool
Arc Welding Station
Booth or screen
Arc Welding Station
Work cable and terminals
Arc Welding Station
END OF
PAGE
4
SHIELDED METAL ARC
WELDING (SMAW)
EXAM
Twist Head & Jaw type
Two most common types of electrode holders
Arc Voltage
The moment the circuit is closed, the voltage drops to what is called
_____________
SMAW
Shielded Metal Arc Welding
Voltage
The pressure of water in a pipe is to electricity
Work
In order to be performed current must flow through the conductors in a
closed electrical circuit.
Amperage
The flow of water in a pipe is to electricity
SMAW Parts
A Power source
A ground cable or clamp
END OF
PAGE
1
, INTRODUCTION TO LATEST
SHIELDED METAL ARC
WELDING (SMAW)
EXAM
An electrode Cable
A welding electrode and electrode holder
The workpiece
Open Circuit Voltage
The voltage present when the welding machine power switch is in the
ON position, but no welding is taking place. It is at is maximum.
5532°C - 6632°C
The heat generated as the current crosses the arc from the electrode to
the workpiece.
The weld deposit is made up of metal from where
As the electrode melts (5532°C - 6632°C) the parent metal and the
electrode small particles of molten metal are carried across the arc
stream and deposited in the molten pool on the parent metal.
Mixture of the electrode and the parent metal.
A mix of the melted electrode and the melted parent ,metal
Parent Metal
END OF
PAGE
2
, INTRODUCTION TO LATEST
SHIELDED METAL ARC
WELDING (SMAW)
EXAM
Metal in the workpiece directly beneath the arc.
Penetration
The force of the arc digs into the workpiece and provides the necessary
depth of _______________ for the weld.
Flux
Covers the SMAW Electrode
Electrodes
Core of solid metal wire or a metal tube containing metal powder. The
core conducts the current to the arc and also provides filler metal for the
weld joint.
Filler
Is deposited as the electrode is gradually consumed and the welder
moves the arc over the workpiece (at the correct arc length and travel
speed)
Coating (Flux)
Helps keep the arc stable and concentrated. As the chemicals in the
coating are vaporized they provide shielding required to protect the
molten metal from contamination by atmosphere.
END OF
PAGE
3
, INTRODUCTION TO LATEST
SHIELDED METAL ARC
WELDING (SMAW)
EXAM
Power Source
May supply either DC or AC and have controls so the current can be
varied in order to meet the requirements of different welding tasks,
materials and positions.
Arc Welding Station
Arc Welding Machine
Arc Welding Station
Workbench
Arc Welding Station
Electrode holder
Arc Welding Station
Stool
Arc Welding Station
Booth or screen
Arc Welding Station
Work cable and terminals
Arc Welding Station
END OF
PAGE
4
