tailieunhanh - Haynes Welding Manual 2

(BQ) Part 2 book "Haynes welding manual" has contents: Shopping for a MIG welder, choosing wire, learning MIG welding, the equipment, the process in action, TIG-welding aluminum, plasma-Arc welding, plasma-Arc cutting, safety & shop equipment,. and other contents. | MIG welding Welding books written as recently as ten years ago may have recommended oxy-acetylene and arc-welding equipment as the basic tools for home/shop welding. At that time, MIG, or wire-feed, welding equipment was considered too expensive for amateur use, despite its advantages. The MIG equipment was recommended, and indeed was originally designed, for high-production shop work only. Much has changed in the intervening years, and the introduction of lowercost MIG units and the competitiveness of the marketplace has brought wirefeed welding into an affordable range for the home/shop weldor. An outgrowth of arc welding, the MIG process was conceived as a way to speed up production in industrial applications. The basic difference with MIG, which stands for Metal Inert Gas welding (sometimes also referred to by its technical description as Gas Metal Arc Welding, or GMAW), is that the welding filler rod is automatically fed through the gun whenever welding takes place. The weldor doesn't need to stop to change arc electrodes. The Airco company developed the MIG process The use of wire-feed MIG welding has expanded greatly in the last ten years to encompass body shops, muffler shops, race-car builders and home hobbyists as well as the industrial production work it was designed for. It has advantages of speed, simplicity, cleanliness, and the ability to work well on thick and thin materials. Among the compact MIG welders in the 110V field is the L-TEC MIG 130, which features 100% duty-cycle at its 30 amp setting for thin material, and has a 25% duty-cycle at 130 amps. It's designed for body shops, hobbyists and light maintenance use. 5-1 Haynes Welding Manual The Miller Electric Co. makes a variety of larger professional welding machines, but they also offer this Millermatic 130, which has a 20% duty cycle at its maximum 130 amps, putting it right in the midst of the 110V home/shop MIGs. For the larger-scale shop, the heavy-duty 220V machines