| A | B |
|---|
| concave fillet weld | A fillet weld having a concave face. |
| concavity | The maximum distance from the face of a concave fillet weld perpendicular to a line joining the weld toes. |
| conductor | A device that carries current. |
| constant current welding machine | A welding machine that maintains a near-constant pre-set current even for changes in voltage that occur from changes in arc length. |
| constant voltage welding machine | A welding machine that compensates for changes in electrical stickout by keeping voltage “near-constant” even for changes in amperage. |
| contactor | An electrical or mechanical device inside a power supply that energizes or de-energizes the output terminals of a power supply. |
| contact tip | A device at the end of the gun tube of a welding gun that transfers current to a continuously fed welding electrode. |
| convex fillet weld | A fillet weld having a convex face. |
| convexity | The maximum distance from the face of a convex fillet weld perpendicular to a line joining the weld toes. |
| corner joint | A welding joint between two members located approximately at right angles to one another. |
| cosmetic pass | A weld pass made primarily to enhance appearance. |
| cover plate | A removable pane of clear glass, plastic coated glass or plastic that covers and protects the filter plate of the weld helmet, hood or goggles. |
| crack | A fracture type discontinuity characterized by a sharp tip and high ratio of length and width to opening displacement. |
| crater | A depression at the termination of a weld bead. |
| crater crack | A crack in the crater of the weld bead. |
| crater fill | The time, current and voltage following a weld time but prior to burnback time during which the crater is filled with the electrode. |
| current | The amount of electricity passing through a conductor in a given amount of time. |
| cycle | 360 electrical degrees |
| cylinder | It is a portable container used for transportation and storage of a compressed gas. |
| cylinder manifold | A multiple header for inter-connection of gas or fluid sources with distribution points. |
| defect | A discontinuity or discontinuities that by nature or accumulated effect render a part or product unable to meet minimum applicable acceptance standards or specifications. |
| defective weld | A weld containing one or more defects. |
| deposited metal | Filler metal that has been added during welding. |
| deposition efficiency | The ratio of the weight of deposited metal to the net weight of filler metal consumed, exclusive of stubs. |
| deposition rate | The weight of material deposited in a unit of time. |
