Brazing Holes In Sheet Metal

Have you ever welded something so thin and worn out that all you do is blow holes in it.

Brazing holes in sheet metal.

Did you want to learn how to work around that and deliver a solid re. The easiest holes to fill are small holes about the diameter of a pen or smaller. Mix a small amount of flux with water to form a paste. Brazing is the process of joining two independent pieces of metal to form one strong load bearing joint.

Brazing means melting an alloy to join two metals. Wipe the areas on the metal pieces that will be joined with the emery cloth so the surfaces are free from dust and grease. Brazing as we ve seen uses the principle of capillary action to distribute the molten filler metal between the surfaces of the base metals. Use the right brazing rod material for the metal used in your project.

It brazes at low temperatures and makes it easy to connect all sorts of metals and the welds aren t brittle. Apply this paste to the areas on the metal pieces that will be joined using the brush. Brazing requires less energy than welding and can be used to join dissimilar metals. By comparison high temp soldering brazing is guaranteed to warp and buckle the metal.

My favorite is low temperature brazing using an alloy called hts 735 ii. Using the same tools and techniques as sweat soldering copper pipe this is the best way i know of doing a permanent almost invisible repair to sheet metal. For these types of holes i start by cleaning the area around the hole with an angle grinder and flap disc. The key tip is to make sure you take the time to setup your welder for nice flat spot welds and leave time for the metal to cool between each weld.