The U.S. Supreme heard arguments in an affirmative action case from Texas for the second time Wednesday. The U.S. Supreme heard arguments in an affirmative action case from Texas for the second time Wednesday.
Welding is a fabrication or sculptural process that joins materials, usually metals or thermoplastics, by causing fusion, which is distinct from lower temperature metal-joining techniques such as brazing and soldering, which do not melt the base metal.as tungsten arc welding (GTAW), or tungsten inert gas (TIG) welding, is a manual welding process that uses a nonconsumable tungsten electrode, an inert or semi-inert gas mixture, and a separate filler material.
However, fusion welding processes, such as gas welding, arc welding, and gas metal arc welding are used in a large number of industries. Gas welding is a process by which the two pieces of metal are locally heated to beyond their melting point, at which time they effectively become one piece of metal.This can be done with or without an alloy rod. Metal inert gas and tungsten inert gas welding are examples of gas metal arc welding processes.ressure welding is a process in which external pressure is applied to produce welded joints either at temperatures below the melting point, which is solid state welding, or at a temperature above the melting point, which is fusion state welding.