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.
TIG, Heliarc or GTAW (Gas Tungsten Arc Welding) is a welding process where a non-consumable tungsten electrode is used to heat up the material and melt it, creating a weld puddle. Unlike GMAW, the weld is produced from a single metal type, because there is no filler metal used for the weld.