​ Fundamental aspects, principles, and practice of gas shield metal arc welding processes, i.e. MIG, MAG, TIG, and PAW. The assembly of equipment, types of power sources, electrodes and wires used in welding, types of troche, and feed units will be covered in this course. The principles, equipment and consumables, flux, and feed wire units of the submerged arc welding process will also be emphasized. During practice in the workshop, the student will gain skills for conducting and performing satisfactory weld joints by these processes using carbon steel specimens.