PROCESOS SOLDADURA 
PROCESOS SOLDADURA
# WHAT EFFECT DO ARC VOLTAGE AND TRAVEL SPEED HAVE ON THE GMAW (MIG-MAG) PROCESS? ## ARC VOLTAGE Arc voltage directly controls **arc length** and has a significant influence on bead geometry and weld quality: – **High voltage** → longer arc, wider and flatter bead, greater spatter, risk of porosity and undercut. – **Low voltage** → shorter arc, narrow and convex bead, tendency toward lack of fusion and stubbing of the wire electrode. – **Optimal voltage** → stable arc, adequate wetting, smooth bead profile with proper tie-in at the toes. Arc voltage also affects **metal transfer mode**: lower voltages favor short-circuit transfer, while higher voltages promote globular or spray transfer (depending on shielding gas composition and current level). — ## TRAVEL SPEED Travel speed determines the amount of heat input and filler metal deposited per unit length of weld: – **High travel speed** → less heat input, narrow bead, reduced penetration, risk of lack of fusion and undercut. – **Low travel speed**
ARC VOLTAGE (ARC LENGTH) The terms Arc Voltage and Arc Length are often used interchangeably; the truth is…
