Tig Brazing Sheet Metal

Apply the brazing rod to the joint while continuing to heat the metal surfaces.

Tig brazing sheet metal.

Apply this paste to the areas on the metal pieces that will be joined using the brush. The diameters down to 020 040 and 1 16 inch tungsten are popular. While the melting point of steel is around 2700 f. It s a process sometimes known as tig or electric brazing.

Heat the joint where the two pieces of metal will meet until the joint glows. Wipe the areas on the metal pieces that will be joined with the emery cloth so the surfaces are free from dust and grease. The melting point of silicon bronze tig rod is between 1800 and 1990 f. Brazing requires less energy than welding and can be used to join dissimilar metals.

Mix a small amount of flux with water to form a paste. Ceriated tungsten are preferred with thoriated tungsten as a second option. In most cases an overlapped joint will be stronger and braze together easier than a gapped joint. I m told brazing pinholes after media blasting is nearly as robust as cutting out the rot shaping and welding in new sheet metal but only half as time consuming as in expensive but only in areas that don t show.

Tig welding sheet metal forget the larger 1 8 inch tungsten electrode and use a smaller one. Tig brazing may be a very useful brazing technique but tig welders are among the most difficult welders to use in the shop. The filler material flows into any and all microscopic crevices in the metal and pulls the pieces together similar to a permanent velcro. Position the metal as desired.

Tig welding with silicon bronze is technically tig brazing because usually the base metal being welded brazed has a much higher melting point than silicon bronze filler rod. If needed use clamps to secure the pieces in position.