The learner will demonstrate an understanding of Shielded Metal Arc Welding variables and quality.
Most covered electrodes operate best on ______________.
DCEP
Higher travel speed __________ the size of the heat-affected zone and increases the cooling rate of the weld.
Higher travel speed __________ the size of the heat-affected zone and increases the cooling rate of the weld.
reduces
Higher travel speed __________ the size of the heat-affected zone and increases the cooling rate of the weld.
reduces
Two methods to strike the arc are by ____________ and by _____________ the electrode.
Two methods to strike the arc are by ____________ and by _____________ the electrode.
scratching and tapping
Two methods to strike the arc are by ____________ and by _____________ the electrode.
scratching and tapping
You should strike low-hydrogen electrodes ahead of the place where welding is to begin, and then quickly move back to begin running the bead to avoid ______________.
You should strike low-hydrogen electrodes ahead of the place where welding is to begin, and then quickly move back to begin running the bead to avoid ______________.
porosity
You should strike low-hydrogen electrodes ahead of the place where welding is to begin, and then quickly move back to begin running the bead to avoid ______________.
porosity
Metal thickness, position, and the _____________ determines how large an electrode can be used.
Metal thickness, position, and the _____________ determines how large an electrode can be used.
type of joint
Metal thickness, position, and the _____________ determines how large an electrode can be used.
type of joint
As a general rule, the ___________ arc length shouldn't exceed the diameter of the electrode's core wire.
As a general rule, the ___________ arc length shouldn't exceed the diameter of the electrode's core wire.
maximum
As a general rule, the ___________ arc length shouldn't exceed the diameter of the electrode's core wire.
maximum
When arc blow is encountered, the arc length should be ___________ as much as possible.
When arc blow is encountered, the arc length should be ___________ as much as possible.
shortened
When arc blow is encountered, the arc length should be ___________ as much as possible.
shortened
Amperage ____________ the recommended range shouldn't be used becasue it could cause excessive spatter, arc blow, undercut, and weld metal cracking.
Amperage ____________ the recommended range shouldn't be used becasue it could cause excessive spatter, arc blow, undercut, and weld metal cracking.
beyond
Amperage ____________ the recommended range shouldn't be used becasue it could cause excessive spatter, arc blow, undercut, and weld metal cracking.
beyond
For fillet welds, the arc is crowded into the joint for a __________ deposition rate and the best penetration.
For fillet welds, the arc is crowded into the joint for a __________ deposition rate and the best penetration.
high
For fillet welds, the arc is crowded into the joint for a __________ deposition rate and the best penetration.
high
__________ penetration is caused by the arc dwelling on the molten weld pool instead of leading it and concentrating on the base metal.
__________ penetration is caused by the arc dwelling on the molten weld pool instead of leading it and concentrating on the base metal.
Shallow
__________ penetration is caused by the arc dwelling on the molten weld pool instead of leading it and concentrating on the base metal.
Shallow
You have answered 5 of 10 questions correctly.
50%