How To Braze Weld Sheet Metal

In most cases an overlapped joint will be stronger and braze together easier than a.

How to braze weld sheet metal.

Position the metal as desired. Typically an overlapped joint will be sturdier and braze together simpler than a. Another method used to join pieces of metal together is brazing. In this technique a filler metal is melted and flowed into the joint where the connection needs to be made.

Place the two metal pieces on the rotating table. How to braze metal apply emery cloth or wire brush to scrape the metal surface. Apply this paste to the areas on the metal pieces that will be joined using the brush. 6 4 1 the oxyacetylene torch is the heat source most commonly used for brazing.

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. 6 4 oxyacetylene braze welding. Mix a small amount of flux with water to form a paste. Use a degreasing solution first from a local hardware store to remove the grease and oil first.

Brazing is a similar method to soldering and welding and requires the metal to be melted so they can be joined. 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 weld wants to shrink as it cools to room temperature but is restrained from doing so by the adjacent cold base metal. Rust and scale can be removed by pickling soaking the metal in a compatible strong acid such as hydrochloric acid.

Then clean the surfaces using soapy water or a. It s just heating the metal then touching the metal with the brazing rod to see if the rod starts melting everything together. Then clean the surfaces using a degreaser or soapy water. 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.

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. Now position the metal properly. 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.

Glow the joint where two metal sections.