Also termed gas metal arc welding. An arc welding process that produces the coalescence of metals by heating them with an arc between continuous filler metal electrode and the work. Shielding is obtained from an external supplied gas source.
Related Terms |
BUBBLE POINT
The differential gas pressure at which the first steady stream of gas bubbles is emitted from a wetted filter element under specified test conditions.
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FILTER ELEMENT
The porous device that performs the actual process of filtration. Also known as Cartridge
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HYDROFINISHING
A process for treating raw extracted base stocks with hydrogen to saturate them for improved stability.
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ARC
A flash, caused by an electric current ionizing a gas or vapor.
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ACID ATTACK
Caused by an incomplete flushing after an acid cleaning process of boilers or similar equipment.
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ABSORPTION
The assimilation of one material into another; in petroleum refining, the use of an absorptive liquid to selectively remove components from a process stream.
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CORROSION INHIBITOR
Additive for protecting lubricated metal surfaces against chemical attack by water or other contaminants. There are several types of corrosion inhibitors. Polar compounds wet the metal surface preferentially, protecting it with a film of oil. Other compounds may absorb water by incorporating it in a water-in-oil emulsion so that only the oil touches the metal surface. Another type of corrosion inhibitor combines chemically with the metal to present a non- reactive surface.
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CRACKING
The process whereby large molecules are broken down by the application of heat and pressure to form smaller molecules.
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ADIABATIC PROCESS
A thermo-dynamic process in which no heat is extracted from or added to the system of the process.
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ADSORPTION
Adhesion of the molecules of gases, liquids, or dissolved substances to a solid surface, resulting in relatively high concentration of the molecules at the place of contact; e.g. the plating out of an anti-wear additive on metal surfaces.
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