How To Weld Copper Sheet Metal

Because copper will absorb heat quickly and distribute the heat through the entire work piece it can be hard to keep a weld puddle.

How to weld copper sheet metal.

Preparation for copper welding using helium gas torch and filler. The technique of joining metal pieces is as simple as applying the glue to the surface of the metal where it needs to be joined from pressing the metals together and letting it dry in most cases the pieces to be glued have to be under pressure after clue is applied until it is dry. During the entire welding operation the molten metal must be protected by the outer flame envelope. Tig welding sheet metal.

To help the copper stay hot enough to weld preheat the whole part to a temperature between 300 and 750 degrees. Apply the filler by gently probing it into the pudding as the arc welds the copper together. Forget the larger 1 8 inch tungsten electrode and use a smaller one. When welding sheet metal you should always cover the backside of the weld.

As soon as the puddle has appeared gently apply a small amount of filler through the arc to weld the metals together. The end of the filler rod should be kept in the molten puddle. The filler will liquify and mix in with the two copper helping the metals weld together. 1 for 1 rule.

The best way to estimate the heat input needed for welding is by applying the 1 for 1 rule. The most common type of welding for copper is the manual metal arc process but gas metal arc and gas tungsten arc are also used. The welding speed should be uniform. You should also know when not to weld copper because soldering or brazing are often better methods depending on the type and use of the copper.

If you happen to be using argon ports then. To weld sheet metal with solid wires use electrode positive ep or reverse polarity.