Update
Q: Contaminants
Answer:
Elements in the air, impurities in shielding gases, or chemical reactions
between base metals and electrodes
Q: Gas Metal Arc Welding (GMAW)
Answer:
Process that produces coalescence of metals by heating
them with an arc between a continuous filler metal electrode and a workpiece
Q: Coalescence
Answer:
Union; a combination
Q: Inert
Answer:
An element that has no active properties
, GMAW Questions and Answers with Verified Solutions | Latest 2026
Update
Q: Metal Inert Gas (MIG)
Answer:
Same as GMAW
Q: Reactive
Answer:
An element or gas that has properties which will actively combine with other
elements present in a base material or a filler electrode at high temperature
Q: Shielding gas
Answer:
Inert gases such as argon or helium, or reactive gases such as CO2, which are
directed under pressure into a weld zone to protect it from atmospheric
contamination