How To Braze Galvanized Sheet Metal

This type of flame and filler which melts just below the boiling point of the zinc coating minimizes the loss of zinc.

How to braze galvanized sheet metal. Use your angle grinder to gently. Steps use the wire brush or emery cloth to scuff the surface of the metal. A neutral to slightly oxidizing flame is employed in conjunction with a filler rod of 60 cu 40 zn alloy rbcuzn a as specified in aws a 5 8 to braze galvanized steel. The previous video i posted on brazing got enough constructive criticism i decided to redo the audio and point out the mistakes i made while brazing.

Do this by pouring the acid into a glass container and adding zinc roofing nails and or slivers of galvanized metal until it no longer bubbles strain the resulting liquid into another glass container. How to braze galvanized pipe. To weld a tear or split in galvanized steel start on any edge of the metal. To provide sufficient heat input to slow travel speed for degassing the molten metal and.

Remove the dull grey galvanized layer of coating from the steel pipe around the site you plan to braze. Then clean the surfaces using soapy water or a. Place the two metal pieces on the rotating table. If none is available use cut muriatic hydrochloric acid.

This will help to. Apply this paste to the areas on the metal pieces that will be joined using the brush. Mix a small amount of flux with water to form a paste. Wipe the areas on the metal pieces that will be joined with the emery cloth so the surfaces are free from dust and grease.

To point the electrode forward to push the zinc vapor away from the arc. Turn a fan on pointing at you from behind. Put on your respirator and eye protection. In most cases an overlapped joint will be stronger and braze together easier than a.