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.
The technical names for these are metal inert gas (MIG), and tungsten inert gas (TIG). A MIG welder works by using a continuously feeding spool of welding wire that burns, melts and fuses both the base and parent metals together. You can weld a variety of materials such as mild steel, stainless steel and aluminum.he most versatile machine is the TIG welder as you can weld many different types of metals. The downside is that it is very slow. For anybody wanting to do some welding at home your better choice of machine to buy would have to be the wire feeding MIG welder.