Posted by Robert Hernandez on Sep 4th 2026
| Term | Definition |
|---|---|
| Vee groove | See butt joint. |
| Vertical down weld | A vertical weld made from the top of the joint to the bottom. |
| Vertical position | A weld performed on a vertical seam or surface. |
| Vertical up weld | A vertical weld made from the bottom of the joint to the top. |
| Visual inspection | A method for determining weld quality by visually examining it and comparing it to known standards. |
| Volt | The unit of measurement for electrical pressure in a circuit. |
| Volt/amp curve | A graph demonstrating the output of a welding power source, showing voltage and amperage capabilities. |
| Voltage | The electrical pressure that forces electrons through a conductor, causing current to flow. Also referred to as electromotive force (EMF) or difference in potential. |
| Voltage drop | The loss of voltage that occurs when electricity travels a long distance due to resistance in the leads. |
| Voltmeter | An instrument used to measure voltage in a circuit. |
| Voltage-sensing wire feeder | A wire feeder that operates using arc voltage generated by the welding power source. |
