Principle of Resistance Welder

Resistance welding is used for joining two metals.
It consists of a welding head, which holds the metal between its electrodes and applies pressure, and a welding power supply, which applies electric current to the metal to be welded.

Resistance generates friction heat when force is applied. Resistance welding utilizes this heat.
Similarly, when an electric current tries to move forward through two metals, heat is generated due to the resistance of the metal itself and the friction at the contact point.
Resistance welding welds a metal to another metal utilizing this heat and pressure.

Basic Configuration of Resistance Welder and Role of Each Part

Resistance welder sandwiches an object to be welded by the welding electrodes, andapplies electric current while applying a pressure.

Weldability by Resistance Welding for Each Material

Weldability and physical characteristic of each welding material and guideline for the electrode material selection are introduced.

Movie Introducing the Principle of Resistance Welder

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