Welding Processes & Techniques Flashcards
7 cards from real Certified Welder practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Welding Processes & Techniques flashcards as text
What is the primary difference between a fillet weld and a groove weld?
Answer: Fillet welds join surfaces approximately at right angles; groove welds fill a prepared joint between workpiece edges
Fillet welds are roughly triangular in cross-section and join two surfaces meeting at an angle, while groove welds fill a prepared groove between butted or edged pieces.
In resistance spot welding (RSW), the weld nugget is formed by:
Answer: Resistance heating at the faying surfaces caused by high current through the workpieces
RSW uses the electrical resistance at the interface between workpieces to generate heat; high current flow through the resistance creates the weld nugget.
When welding in the overhead (4G/4F) position, which technique adjustment is most important?
Answer: Reducing amperage slightly and using a smaller electrode to control the puddle
Overhead welding requires reduced amperage and smaller electrodes to produce a smaller, more manageable puddle that resists gravity-induced sagging.
What does 'weave bead' technique accomplish compared to a 'stringer bead'?
Answer: Weave beads deposit a wider pass and allow more heat distribution across the joint
A weave bead involves oscillating the electrode side-to-side to deposit a wider bead and distribute heat across a broader area of the joint.
Which type of weld joint preparation uses a single bevel cut on one plate only for a butt joint?
Answer: Single-bevel groove
A single-bevel groove prepares only one piece with an angled cut, creating an asymmetrical joint used when access is limited to one side.
What is the purpose of a 'backing bar' or 'backing strip' used in groove welding?
Answer: To support the root pass and prevent burn-through on open-root joints
A backing bar supports the molten weld pool at the root, preventing burn-through and ensuring full-penetration fusion on a single-sided weld.
Friction stir welding (FSW) is classified as which type of welding process?
Answer: Solid-state welding, because the base metal is joined below its melting point
FSW is a solid-state process; a rotating tool generates frictional heat that plasticizes but does not melt the base metal, producing a forged-quality joint.