| Waist joint |
One of several axes (straight lines about which rotation can take place) on a typical robot. |
| Warped |
Twisted out of shape; in metals, usually a result of improperly applied heat. |
| Water-cooled torch |
A torch that has a continuous flow of water passing through the torch body to remove heat.This type of torch is typically used to carry currents over 200 amperes and at high duty cycles. |
| Weaving bead |
A bead formed by moving a torch or electrode holder from side-to-side as the pass progresses along the weld joint. |
| Weld |
The blending or mixing of two or more metals or nonmetals by heating them until they are molten and they flow together. |
| Weld all-around symbol |
A circle drawn on the welding symbol, indicating that the described weld is to be made all around the part. |
| Weld axis |
An imaginary line running through the center of a completed weld. |
| Weld bead |
One thickness of filler metal that is added to a weld joint. |
| Weld face |
The outer surface of a weld on the side from which the weld is made. |
| Weld groove |
A cut, ground, or machined surface on the workpiece, designed to provide space for welding. |
| Welder |
A person who performs welding activities. |
| Welding |
The process of making a weld on a joint. |
| Welding gun |
Typically refers to a MIG (GMAW) torch. |
| Weldment |
An assembly whose component parts are joined by the welding process. |
| Weld pool |
The small body of molten metal created by the arc of the torch. |
| Welding machine |
A device that provides and controls the proper voltage and current for a welding task. |
| Weld Metal |
Both electrode and base metal that forms the welding bead. |
| Weld nugget |
The weld metal in a resistance spot, seam, or projection weld. |
| Welding outfit |
The welding machine and other equipment required to actually create a weld. |
| Weld pass |
One bead along a welding joint. |
| Welding performance qualifications |
A test of a welderâs ability to weld a joint as directed by the welding procedure specification. |
| Welding positions |
The position of the weld axis and weld face determines whether a weld is made in the flat, horizontal, vertical, or overhead position. |
| Welding procedure |
A method by which a weld is to be made, as outlined in a welding procedure specification. |
| Weld procedure specification |
A document that details the specifics of the job: the base metal to be welded, the filler metals to be used, the preheat or post-welding treatment to be used, the metal thickness, and all other variables for each welding process.All items in the specification are identified as essential or nonessential. |
| Weld reinforcement |
Weld metal extending beyond the upper and lower surfaces of the base metal. |
| Weld rod |
The filler metal wire or rod that is melted into the weld metal. |
| Weld schedule |
Same as weld sequence. |
| Weld sequence |
The order in which the component parts of a structure are welded. |
| Weld station |
A work area that contains the electric and gas supply, the welding machine, booth, ventilation, and all required supplies to perform welds. |
| Weld symbol |
The symbol (designed by the American Welding Society) that appears on a drawing of a weldment.The symbol describes the joint preparation, the weld, and other considerations. |
| Weld time |
The time, measured in cycles, when the current flows to make a resistance weld. |
| Weld Transfer |
Process transferring metal from the wire to the molten puddle. |
| Wire Feed Speed |
A measurement of speed and amount of filler metal fed into a weld shown as in/min or mm/s. The higher the wire feed speed, the higher the amperage. |
| Wheel electrode |
A rotating electrode used in resistance seam welding. |
| Whip motion |
The rapid movement of the electrode away from and back to the weld pool or arc crater.The motion allows time for the weld metal to cool. |
| Wire brush |
A brush with bristles of metal wire, used to clean the weld bead between passes. |
| Wire feeder |
Used in MIG (GMAW) welding, the device that continuously feeds the consumable electrode wire to the welding gun. |
| Wire tension knob |
A device used to control the pressure applied to the drive rolls of a wire feeder. |
| Work booth |
An arc welding work area shielded from the view of workers without eye protection by solid walls, canvas curtains, or filtered, transparent plastic curtains. |
| Work hardening |
The increase in strength and hardness produced by working certain metals such as copper, iron, aluminum and nickel.It is most pronounced in cold working. |
| Working pressure gauge |
The gauge on a pressure regulator that shows the pressure of the gas being supplied to the torch. |
| Working volume |
The three-dimensional space in which a robot moves while performing programmed tasks. |
| Workpiece |
The object or assembly being welded. |
| Workpiece Connection |
The way in which the work lead is fastened to the metal to be welded on. An adjustable clamp is one type of workpiece connection. |
| Workpiece lead |
The conductor cable or electrical conductor that runs between the welding machine and the work. |
| Wrist joint |
One of several axes (straight lines about which rotation can take place) on a typical robot. |
| Wrought iron |
An easily welded or forged iron containing about .2% carbon. |
