The learner will demonstrate knowledge of GMAW techniques by identifying fundamental terms.
If the arc length for globular transfer is too _______________ (low voltage), the enlarging drop may short to the workpiece, become superheated, and disintegrate, producing spatter.
If the arc length for globular transfer is too _______________ (low voltage), the enlarging drop may short to the workpiece, become superheated, and disintegrate, producing spatter.
short
If the arc length for globular transfer is too _______________ (low voltage), the enlarging drop may short to the workpiece, become superheated, and disintegrate, producing spatter.
short
In spray transfer mode, the ____________ droplets are smaller than the electrode diameter and spatter is negligible, if not totally eliminated.
In spray transfer mode, the ____________ droplets are smaller than the electrode diameter and spatter is negligible, if not totally eliminated.
molten
In spray transfer mode, the ____________ droplets are smaller than the electrode diameter and spatter is negligible, if not totally eliminated.
molten
Which type of metal transfer is limited to use on thin materials?
Which type of metal transfer is limited to use on thin materials?
Short Circuiting
Which type of metal transfer is limited to use on thin materials?
Short Circuiting
_____________ is not suitable for all position welding.
_____________ is not suitable for all position welding.
Spray Transfer
_____________ is not suitable for all position welding.
Spray Transfer
By reducing the average arc energy and the wire-melting rate, pulsing makes the desirable features of __________ transfer available for joining sheet metals and welding thick metals in all positions.
By reducing the average arc energy and the wire-melting rate, pulsing makes the desirable features of __________ transfer available for joining sheet metals and welding thick metals in all positions.
spray
By reducing the average arc energy and the wire-melting rate, pulsing makes the desirable features of __________ transfer available for joining sheet metals and welding thick metals in all positions.
spray
When all other variables are held constant, the welding amperage varies with the ______________.
When all other variables are held constant, the welding amperage varies with the ______________.
wire feed speed
When all other variables are held constant, the welding amperage varies with the ______________.
wire feed speed
Spray transfer welding requires an _______________ shielding.
Spray transfer welding requires an _______________ shielding.
argon-rich
Spray transfer welding requires an _______________ shielding.
argon-rich
Globular transfer is characterized by a drop size with a diameter _____________ than that of the electrode, which generally limits successful transfer to the flat position.
Globular transfer is characterized by a drop size with a diameter _____________ than that of the electrode, which generally limits successful transfer to the flat position.
greater
Globular transfer is characterized by a drop size with a diameter _____________ than that of the electrode, which generally limits successful transfer to the flat position.
greater
The short-circuiting electrode contacts the molten weld pool in the range of ________ times per second.
The short-circuiting electrode contacts the molten weld pool in the range of ________ times per second.
20 to over 200
The short-circuiting electrode contacts the molten weld pool in the range of ________ times per second.
20 to over 200
With ___________, a globular transfer takes place when the current is relatively low, regardless of the type of shielding gas.
With ___________, a globular transfer takes place when the current is relatively low, regardless of the type of shielding gas.
electrode negative (DCEN)
With ___________, a globular transfer takes place when the current is relatively low, regardless of the type of shielding gas.
electrode negative (DCEN)
You have answered 5 of 10 questions correctly.
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