WASHINGTON â The Supreme Court openly struggled Wednesday with the racial preferences used by the University of Texas to achieve student diversity, as several conservative justices questioned how much is enough to declare affirmative action programs no longer necessary.
Gas metal arc welding (GMAW), also known as metal inert gas or MIG welding, is a semi-automatic or automatic process that uses a continuous wire feed as an electrode and an inert or semi-inert gas mixture to protect the weld from contamination.
Understanding MIG Welding. 1  1. Learn the basics of MIG welding. The process is GMAW (Gas Metal Arc Welding), commonly known as MIG welding (Metal Inert Gas welding). 2  2. Learn how it works. MIG welding uses a machine to feed a wire through a contact tip into a MIG gun. 3  3. Understand the applications.