How to Braze Aluminum

Step-by-Step Guide

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   Step 1: Wear non-flammable clothing

   Use a degreasing solvent to get rid of oil and grease.
   
   Depending on the size of the repaired area, you may need to sandblast the area or use an emery cloth, grinding wheel, or file. ,, An all-purpose flux covers a wide range of temperatures and is beneficial to have on hand for general purpose brazing.
   
   Add flux by dipping the filler rod into the flux.
   
   You may also use flux-coated rods to eliminate this step.
   
   The flux-coated rods apply the flux during the aluminum brazing process. , This happens when the metal gets very hot.
   
   Once you apply a flux, it should change colors or turn clear throughout. , The heat of the metal will melt the filler into the area needing the repair.
   
   Move the flame of the torch on and off as needed to melt the rod. , The flux will flake off.
   
   If it does not come off, use a wire brush to gently scrub the brazed area while wet or still in the hot water. ,,
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   Step 2: gloves

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   Step 3: and safety goggles before you begin the brazing process.

4. 4

   Step 4: Clean all dirt

5. 5

   Step 5: or other residue from the area to be repaired by aluminum brazing.

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   Step 6: Clamp or support the piece to be brazed.

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   Step 7: Use a brush to apply the flux appropriate to the temperatures and the metal.

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   Step 8: Heat the repaired area with a propane or acetylene torch until the aluminum shows an orange bloom.

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   Step 9: Apply the filler metal by running a brazing rod along the crack or the joint.

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    Step 10: Remove the flux after the filler material has solidified by dipping the part or pouring hot water on the repair.

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    Step 11: Polish the area with an emery cloth after the metal has cooled completely.

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    Step 12: Coat the area with a rust-resistant coating if you are not immediately finished with the area.

Detailed Guide

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