Chapter 12 worksheet
weaving
- increases the bead width.
True
A closed butt joint is suitable for welding steel that generally does not exceed 3/16" thick.
True
A single pass is usually sufficient for welding corner joints
False
A weaving motion is often used when depositing a root bead.
root
A welding the requires complete penetration through the thickness of a joint member is a - weld
True
An open butt joint should have a root opening of about 3/32" to 1/8" to allow for expansion and penetration.
True
For maximum strength, a T-joint is welded on both sides
True
Generally a backing bar or block of scrap steel is placed under an open butt joint when welding.
True
One or more intermediate weld passes may be neccassery to properly complete a weld.
True
Problems that occur during SMAW are often the result of improper settings on the welding machine.
True
Root reinforcement should not exceed fabristcation code criteria or 1/16" beyond the bottom surface of the joint.
True
Slag from a previous pass must be removed completely before welding the next pass
True
Surfacing is the application of a layer or layers of material to a surface to obtain desired dimensions or properties like abrasion resistance.
False
Tack welds are used to provide additional reinforcement and a finished appearance.
True
The cover pass is used to provide additional reinforcement and a finished appearance.
False
The welding ooperation is simplified if the joint is in the horizontal position.
True
Weaving motions frequently used include the cresent, figure eight, and rotary.
True
Welding in flat position is more efficient than welding in other position.
False
When welding a butt joint the thicker the metal the greater the amount of overlap needed.
False
When welding workpieces of different thicknesses, more heat should be directed to the thinner workpiece for proper heat control.
Butt joint
a -- is often used when joined structural pieces must have a flat surface, such as in tanks, boilers, and variety of machine parts.
surfacing weld
a -- is used to build up worn surfaces or shafts.
outside corner
a -- is used to construct rectangular objects such as tanks.
weaving technique
a -- is used to increase bead width.
cover pass
a -- is used to maintain the proper root opening between workpieces until final welding takes place.
butt joint
a -- is used when joined structural pieces must have a flat surface.
multiple-pass
a -- weld consists of depositing several layers of welds one on top of the other to increase the dimensions of a part.
lap joint
no beveling or machining is necessary when using--
root pass
the -- is the pass that provides complete penetration through the thickness of the joint member
Cover pass
the -- pass is the final weld pass deposited.
weaving motion
when depositing a multiple pass fillet weld in a lap weld the last pass may be deposited with a --
Slag
when depositing surfacing welds - must be removed before depositing additional beads.
flat
when welding in - position gravity helps direct the flow of molten weld metal.
