Welding of non-ferrous metals and its features

Welding non-ferrous metals and their alloys has its own characteristics that distinguish it from welding steel and other materials. Special electrodes, known as "non-ferrous metal welding electrodes," are used for welding non-ferrous metals.

The main non-ferrous metals are aluminum, copper, nickel, and titanium. Each of these metals has its own characteristics that must be taken into account when welding.

Aluminum and its alloys are characterized by high electrical and thermal conductivity, low density, increased corrosion resistance, and easy oxidation. The oxide film that forms on the aluminum surface can interfere with weld formation during welding. Therefore, the film must be removed from the metal surface before welding. Electrodes with a high silicon content are used for welding aluminum, ensuring good weldability and weld quality.

Copper and its alloys have high thermal conductivity, a low melting point, and good ductility. When welding copper, it is necessary to control the heating and cooling rates of the metal to prevent splitting. Electrodes with a high phosphorus content are used for welding copper and its alloys, ensuring good weldability and weld quality.

Nickel and its alloys have high thermal conductivity, good corrosion resistance, and mechanical strength at high temperatures. High-nickel electrodes are used for welding nickel and its alloys, ensuring good weldability and weld quality.