The role of metallic wire is bought from the supplier with low carbon and silicon contents in it. These wires are inspected in the composition and can be heat treated if required to increase the ductility property of the metal.
This metal forming process is used to reduce the cross-section of the wire by pulling it through drawing dies. These metallic wires are then drawn in the metal forming machines, where they are shaped into special sizes as per the requirement. The common sizes of these metallic rods are mainly 2.5mm, 3.15mm, 4mm, and 5mm.
Straightening and Cutting
After the metal forming process is completed, the feed is provided to the straightening and cutting machine. Here the metallic rod is straightened and cutting is done as per the specified length of the welding electrode.
Watch video below to uderstand making of welding electrodes better-
The dry mixture is the chemical composition of the flux to be coated on the metallic rod. The chemical mixture mainly consists of Cellulose, Mica, Titanium Dioxide, Low Carbon Ferro Manganese, Feldspar etc. These elements are weighed well before preparation and added to the dry mixer to make a homogenous mixture out of it.