How To Braze Weld Sheet 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.

How to braze weld sheet metal. This restraint creates high residual tensile stress that causes the weld to act like a stretched rubber band with the workpiece holding the ends figure 1 for this reason when the clamps that hold the workpiece are removed the base metal is allowed to move or spring. Melt brazing making candle sticks my first weld type i will describe here is typical melt brazing. How to braze metal apply emery cloth or wire brush to scrape the metal surface. Place the two metal pieces on the rotating table.

Then clean the surfaces using a degreaser or soapy water. Then clean the surfaces using soapy water or a. Brazing is a similar method to soldering and welding and requires the metal to be melted so they can be joined. 6 4 oxyacetylene braze welding.

Heat the joint where the two pieces of metal will meet. To get a good weld the surface of the metal you re using has to be free from substances such as oxides grease and oil. In this technique a filler metal is melted and flowed into the joint where the connection needs to be made. It s just heating the metal then touching the metal with the brazing rod to see if the rod starts melting everything together.

Steps use the wire brush or emery cloth to scuff the surface of the metal. Use a degreasing solution first from a local hardware store to remove the grease and oil first. The weld wants to shrink as it cools to room temperature but is restrained from doing so by the adjacent cold base metal. Wipe the areas on the metal pieces that will be joined with the emery cloth so the surfaces are free from dust and grease.

Now position the metal properly. In most cases an overlapped joint will be stronger and braze together easier than a. Rust and scale can be removed by pickling soaking the metal in a compatible strong acid such as hydrochloric acid. Position the metal as desired.

Apply this paste to the areas on the metal pieces that will be joined using the brush. Another method used to join pieces of metal together is brazing. 6 4 1 the oxyacetylene torch is the heat source most commonly used for brazing. There are many materials that can be used to make the filler metal.

In this example i m making some candlesticks welding copper to aluminum.