How To Weld Aluminum With Gas Torch. For practice keep the torch unlit to save metal. Operating temperatures of 1022 F - 2192 F.
Prepare the fuel and oxygen mixture on the blowtorch tank until the blowtorch glows with a bright blue flame. Aluminum will start to melt at 1200deg Fahrenheit but the brazing rod will melt at around 700deg so we want to get the aluminum hot enough to melt the rod without melting the tubing. Equipping the torch with the correct wear parts for aluminum welding should not be forgotten either.
Brace the torch with your hand.
How To Gas Weld Cut Steel Aluminum Cast with a Cobra Torch - Eastwood. Getting the tubing hot enough may take 4 to 5 minutes. Welding the pieces will typically require the use of a bronzing rod. When welding keep the proper aluminum filler electrode or rod free of contaminants and melt it with the base material to create a constant welding puddle GMAWMIG Gas metal arc welding GMAW commonly referred to as metal inert gas MIG welding is another common method used for aluminum welding.