Procedure

TIG - Use AC with superimposed high frequency as in aluminum procedures with Argon or Argon-Helium gases. Base metal must be free of protective acid or chome pickle coating as well as any oil coating which must be removed just prior to welding or brazing. Mechanical cleaning with stainless steel wire brushes is preferred for most applications. Vapor degreasing or a degreaser that leaves no residue will remove oil coating.



BRAZING - Weld or braze as soon as above cleaning procedure is finished since magnesium alloys form a very tough magnesium oxide coating when exposed to the atmosphere. For brazing, joint clearances should be .004" (.1mm) to .010" (.3mm). Lap or fillet type joints are recommended. Bevel sections thicker than 1/8" (3.2mm) 75 to 90°. Using a slightly carburizing flame, preheat to approximately 400°F (204°C). Sprinkle All-State 61 Flux on joint area or dip heated end of rod in flux and continue to heat joint until flux liquifies. Add drop of alloy and flow it out continuing this procedure until job is finished. Allow to cool slowly and remove all flux residue with hot water and brush.