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4043 aluminium alloy [1] [2] [3] is a wrought aluminium alloy with good corrosion resistance typically used as filler material [4] [5] for welding of aluminium parts. It contains high amounts of silicon (between 4.5 and 6%) and trace amounts of other metals. [6] It is grey in appearance and is sold as either welding wire or welding rod for TIG ...
Automotive arc welding (aluminum) AWS D9.1: Sheet metal welding AWS D10.10: Heating practices for pipe and tube AWS D10.11: Root pass welding for pipe AWS D10.12: Pipe welding (mild steel) AWS D10.13: Tube brazing (copper) AWS D10.18: Pipe welding (stainless steel) AWS D11.2: Welding (cast iron) AWS D14.1: Industrial mill crane welding AWS D14.3
Aluminium alloys are often used due to their high strength-to-weight ratio, corrosion resistance, low cost, high thermal and electrical conductivity.There are a variety of techniques to join aluminium including mechanical fasteners, welding, adhesive bonding, brazing, soldering and friction stir welding (FSW), etc. Various techniques are used based on the cost and strength required for the joint.
The rods could be a metal coated in oil to prevent the rod oxidising if needed or in more complicated welding of metals the rod would be coated in a "flux" that was not an active flux but a method of protecting the welding rods from oxidisation during storage (the major examples of this were rods for welding; pure aluminium, duralumin ...
Many gas welding processes, such as lead burning, are typically autogenous and a separate wire filler rod of the same metal is only added if there is a gap to fill. Some metals, such as lead or Birmabright aluminium alloy, use offcut strips of the same metal as filler. Steels are usually welded with a filler alloy made specially for the purpose.
Exothermic welding, also known as exothermic bonding, thermite welding (TW), [1] and thermit welding, [1] is a welding process that employs molten metal to permanently join the conductors. The process employs an exothermic reaction of a thermite composition to heat the metal, and requires no external source of heat or current.