On a track, the extra boost given by premium can mean a few tenths of a second difference on a lap time. In the real world, it barely affects performance, or fuel economy. Consumer Reports advises that premium should only really be used in your car if your ownerâs manual mandates it.
TIG-Gas Tungsten Arc Welding (GTAW). Gas Tungsten Arc Welding, commonly called TIG or Heliarc, is a welding process that uses a non-consumable tungsten electrode to heat the base metal and to create a molten weld puddle.
There are currently over 50 different types of welding processes; weâll focus on 3 examples of electric arc welding, which is the most common form of welding. â¢. â¢ All of these methods employ an electric power supply to create an arc which. melts the base metal(s) to form a molten pool.