What is Resistance Welding?

 First patented in 1909 by Elihu Thompson, resistance welding is a cost effective and easily automated material joining process that creates a bond directly between two or more metal sheets. By controlling pressure, the weld current, and weld time; a bond is created between two sheets of metal without the need for filler metals or a bonding agent. Based on Ohm's Law, the process uses the contact resistance between the materials to be welded to generate heat as the weld current passes between the materials. This heat melts the materials to a molten state; thus, allowing the pressure to fuse the two materials together.

With over 80 years of experience manufacturing resistance welding consumables, Tuffaloy Products has developed a complete set of guides and information to help users understand and succeed with the resistance welding process. This technical section is intended to provide users with information to: