Chapter 22 GTAW Flashcards
What is out-of-position welding?
Welding in a position other than flat
What causes a weld bead to sag and not properly fill a joint in out-of-position welding?
gravity pushes the molten weld pool down.
What travel angle and work angle is used to weld a horizontal fillet weld?
travel angle: 15-30°
work angle: 45°
In a horizontal fillet weld, the torch is centered over the ___________
root of the weld but pointed more toward the vertical piece
Where is filler metal added to a horizontal fillet weld?
To the upper leading edge of the weld pool
When making a fillet weld in any position, a ___ weld pool is used
c-chaped
Why is a c-shaped weld pool used in any position while making a fillet weld?
It shows that both pieces are melting similar to welding in a flat position.
What should the face of a completed fillet weld look like?
It should be flat or slightly convex
How do you reduce undercut and underfill in a butt weld?
By adding filler metal on top of the weld pool
In a butt weld, the welding rod is held _________° above the axis of the weld.
15° - 20°
the welding rod is added to the front upper part of the weld pool
When welding downhill, the electrode is held in line with the weld axis with a _____ travel angle.
15° - 20°
It may be added from the top or side
How When welding in the vertical position with GTAW, thicker metals are welded with the weld pool moving from ______________
the bottom of the joint towards the top. this is also known as uphill (vertically up) welding.
Thin metals (1/16” or thinner) are welded using ________ welding.
downhill (vertically down)
When welding downhill, the filler metal is added to the ___________
trailing edge, which is the top of the weld pool, or the side of the weld pool.
Welding current for overhead welding can be reduced ______A, depending on the base metal thickness.
10-20A
10A less for thin metals on overhead than for flat welding
20A less for thick metals
