Exam 10: Gas Metal Arc Welding Equipment, Setup, and Operation

GMAW power supplies are ____ type machines.

The purpose of the ____ is to provide a steady and reliable supply of wire to the weld.

Modulated current metal transfer uses an extremely modified version of _________.

As much as ____ can be added to the argon to increase the power in the arc without affecting the desirable qualities of the spray mode.

In the ____ feed system, the electrode must have enough strength to be pushed through the conduit without kinking.

In the pulsed-arc metal transfer current cycle, ____ refers to the surging electrical current passing through the transformer like a wave on water.

Explain how to measure the wire-feed ipm.

The ____________________ rate, measured in inches per minute or pounds per hour, is the rate at which the arc consumes the wire.

In the pulsed-arc metal transfer current cycle, ____ refers to how the electric current in a transformer takes a few milliseconds to build up the magnetic field to full strength once the coil is energized.

In the pulsed-arc metal transfer current cycle, ____ is a function of the time it takes the magnetic field in the transformer to collapse once the coil is de-energized.

GMAW-P is a ____________________ system that interlocks the power supply and wire feeder.

The rate of voltage decrease as the amperage increases within the working range is known as ____________________.

In axial spray metal transfer, the shielding gas is usually a mixture of ____.

Which of the following is true of axial spray transfers using high current settings?

The modulated current transfer process can be used to make code quality root welds ______.

The ____________________ rate is the measure of the weld metal deposited.

The ________ current of the spray mode produces good penetration and fusion, and the ____ current allows the weld pool to cool and contract slightly.

When the GMAW-S process is properly tuned, what is the approximate rate of its cycling?

Explain the modulated current metal transfer process.

In the pulsed-arc metal transfer current cycle, ____ is the peak current that flows across the arc during the high current pulse.