quiz 10 Flashcards
What effect does shortening the electrode extension have on weld penetration?
Better penetration and hotter weld
What effect does CO2 used as a shielding gas have on the weld
Deep Penetration
neither A or B
Describe the weld characteristics produced by a forehand welding angle.
Wide weld
Shallow Penetration
Where is the drive motor located in a pull-type wire-feed system?
In the gun
T or F : Drive rollers are of different sizes.
True
What effect does Argon shielding gas have on welds?
NOT deep penetration or flat welds
neither A or B
what are two types of metal transfer used by GMAW welders?
Globular
Axial
What type of metal transfer is the most commonly used?
Short circuit
What type of welding gas must be used for Aluminum welding?
Argon 100%
Which type of metal transfer has hundreds of drops per second?
Axial
What is the primary reason welding wire has a thin copper coating?
To prevent the steel from coming in contact with oxygen and other elements in the air
What type of power supply is used for GMAW welding machines?
Constant-voltage, constant potential-type machines
The wire speed on a GMAW machine is listed on the dial in _______
IPM; inches per minute
The weld bead is affected by several factors, like ______
Power settings
Amperage
Voltage
What is meant by the term electrode extension?
The distance the arc travels from the contact tube to the plate being welded
