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.
MIG can be used automatically or semiautomatically. An example of automatic MIG is a robotic arm welding car frames at an auto assembly plant. Semiautomatic is when an operator holds the MIG gun and manipulates the weld pool. In automatic MIG, an operator sets up and watches the machine. An experienced welder is the preferred operator, because he has the right touchand knows what it means to be in the welding zone. (In the zone is when you become one with the process of the weld metal becoming one with the base metal, grasshopper.