Teachers, parents, and administrators might want to know how well students are reading and writing in general, independent of the specific instructional program. This requires a different type of formal assessment.
GMAW or Gas Metal Arc Welding. More commonly called MIG welding this welding type is the most widely used and perhaps the most easily mastered type of welding for industry and home use. The GMAW process is suitable for fusing mild steel, stainless-steel as well as aluminium. GTAW or Tungsten Inert Gas.
Two welding processes are the most popular from this group, v Diffusion welding: parts coalesce by solid-state diffusion; v Friction welding: coalescence is achieved by the heat of friction between two parts;Most of the processes for fusion welding and for solid-state welding are discussed in the present section.