Welding Flashcards
6 cards from real Other Skilled Trades practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Welding flashcards as text
What does the acronym MIG stand for in MIG welding?
Answer: Metal Inert Gas
MIG stands for Metal Inert Gas, a welding process that feeds a continuous solid wire electrode through a welding gun shielded by an inert gas.
Which welding position is considered the most difficult to perform?
Answer: 4G (Overhead)
The 4G overhead position is considered the most challenging because molten metal tends to drip away from the weld pool due to gravity.
What shielding gas is most commonly used for MIG welding mild steel in the US?
Answer: 75% Argon / 25% CO2
A 75/25 Argon/CO2 mixture (C25) is the most widely used shielding gas for MIG welding mild steel, providing good arc stability and weld appearance.
What is the purpose of preheating steel before welding?
Answer: To reduce the risk of cracking and residual stress
Preheating reduces the temperature differential between the weld and base metal, slowing cooling rates and reducing the risk of hydrogen cracking and distortion.
In AWS welding certification, what does the 'D1.1' designation refer to?
Answer: Structural welding code for steel
AWS D1.1 is the American Welding Society's Structural Welding Code for Steel, the most widely referenced welding standard in US structural fabrication.
What type of joint is formed when two pieces of metal are welded end-to-end in the same plane?
Answer: Butt joint
A butt joint is formed when two pieces of metal are aligned end-to-end in the same plane and welded along the seam between them.