How To Welding Copper. In welding copper sheets the heat is conducted away from the welding zone so rapidly that it is difficult to bring the temperature up to the fusion point. On the one hand the copper has to be preheated due to the rapid heat dissipation.
In TIG welding of copper one needs to clear the surface of copper from any contaminant and preheat the workpiece using a propane torch. When it comes to welding copper the best position is a horizontal seam or down-hand. It is often necessary to raise the temperature level of the sheet in an area 60 to 120 in.
This method is inexpensive can be practiced without danger and the welding of the metal is faster.
Step-by-step Copper Welding Procedures 1 Preheating Due to the coppers high thermal conductivity it is important to preheat the metal if it is more than 2mm or 001 inch in thickness before any welding can be done. The pipes segments to be joined should be preheated uniformly. When a welder uses tig welding in thick copper he must preheat the copper alloy up to 350 degrees Celcius. It is often necessary to raise the temperature level of the sheet in an area 60 to 120 in.