| A | B |
|---|
| Slope Adjustment | Changing the slope of the volt-amp curve by decreasing the maximum short circuit current. This reduces spatter during short circuiting transfer |
| Pinch Force | In short circuiting GMAW metal transfer, the magnetic force that squeezes off the droplet of the molten electrode metal. |
| Inductance | In the presence of a varying current in a circuit, the magnetic field surrounding the conductor generates an electromagnetic force in the circuit itself. If a second circuit is adjacent to the first, the changing magnetic field will cause (induce) voltage in the second circuit. An important application of this principle is the step-down transformer used in welding machines. |
| Globular Transfer | In GMAW, the movement of molten metal in large droplets from the consumable electrode across the arc. |
| Microprocessor | A silicon chip that contains computer logic circuits and other components used to control a digital device. |
| Self-Shielding Electrode | An electrode that produces its own shielding gas and does not require additional shielding gas. |
| Liner | A flexible tube placed inside the combination cable through which a consumable wire electrode passes on its way to the GMAW torch. |
| Short Circuiting Transfer | A gas metal arc process that uses relatively low voltage. The arc is constantly interrupted and restarted as the molten electrode shorts out against the base metal. |
| Wire Feeder | In GMAW, the device that continuously feeds consumable electrode wire to the welding gun. |
| Short Circuit | In the short circuiting transfer process, the condition that occurs when the electrode touches the base metal, causing metal from the electrode to enter the weld. |
| Gas Nozzle | A ceramic or metal device on a torch or gun used to direct the shielding gas to the weld area. |
| Metal Cored Electrode | An electrode that has a mild steel sheath over a core that contains iron powder and other metal alloy powders. |
| Peak Current | During pulsed GMAW or GTAW, the higher current that is used for welding. The lower background current maintains the arc and allows the weld to cool. |
| Pulsed Spray Transfer | A GMAW process in which the current is pulsed to take advantage of the spray mode of metal transfer, but with current values below the spray transition current. |
| Inverter | A power supply that changes the input frequency to the transformer in a welding machine. Inverter power supplies can be used for all arc welding processes and for plasma arc cutting. A type of welding machine used for GMAW. |
| Push-pull system | A system formed when a GMAW pull gun pulls the electrode wire through the cable and the wire feeder pushes the wire. |
