Welding Positions & Joint Types Flashcards

Which groove weld joint preparation involves beveling only one piece of the base metal?

Answer: Single-bevel groove

A single-bevel groove joint has only one piece beveled, resulting in an asymmetric joint preparation.

What does the term 'weld progression' refer to in vertical welding?

Answer: Whether welding moves upward or downward

Weld progression in vertical welding refers to the direction of travel — either uphill (vertical-up) or downhill (vertical-down).

An edge joint weld is most commonly used for which application?

Answer: Thin sheet metal where edges are parallel and close together

Edge joints are used primarily for thin sheet metal where two parallel plates have their edges joined, often in flanged applications.

In the AWS position designation '3G', what does the '3' indicate?

Answer: Vertical position

In AWS nomenclature, the number 3 designates the vertical position, so 3G means a vertical groove weld.

Which factor most affects the choice between vertical-up and vertical-down welding?

Answer: Material thickness and process type

Material thickness and welding process primarily determine progression direction — thicker materials benefit from vertical-up for better penetration while thin materials use vertical-down.

A lap joint is created when two pieces of metal are positioned how relative to each other?

Answer: Overlapping parallel to each other

A lap joint is formed when two pieces of metal overlap each other in parallel planes and are welded along the edge of one or both pieces.

What is the purpose of a root opening in a groove weld joint?

Answer: To allow for complete joint penetration and fusion at the root

The root opening (gap) between the base metal pieces allows the welding arc to reach and fuse the root of the joint for full penetration.