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In this manufacturing process, metals are welded without additional materials. This is achieved through the pressure and the electric current applied to the wished welded area.

During the process, metal parts (commonly steel) are pressed together by the welding machine”™s electrodes to assure a firm and constant electrical contact.

Subsequently, the electric current passes through the electrodes and heats them until their junction spot melts. The two pieces”™ of molten metal are combined and they join together. When current stops both pieces solidify, forming a solid metallic connection between both pieces.