In GMAW, which statement correctly describes how wire feed speed and travel speed interact to affect heat input and deposition?

Study for the Gas Metal Arc Welding Exam, including GMAW, FCAW, and MCAW methods. Use flashcards and multiple choice questions with hints and explanations for effective learning. Get ready for your welding certification!

In GMAW, the amount of heat put into the weld and how much filler metal is deposited depend on how fast you feed the wire and how fast you move along the weld. When you increase the wire feed speed, the arc current tends to rise, melting more filler metal. If you move more slowly (slower travel speed), the arc stays on each spot longer, so more heat is delivered to that location per unit length and more of the molten filler can be deposited into the weld pool. Put together, a higher wire feed with slower travel increases both the heat input and the deposition rate, leading to a hotter, thicker bead with more metal deposited. If you move faster, you spread the same heat over a longer length and deposition per unit length tends to decrease; if you feed wire faster but also move faster, the heat per unit length may not rise as much, and deposition patterns change accordingly.