Resistance welding is a technique that makes use of heat to form the weld by the electrical resistance of material as opposed to the time and the force used to hold the materials together during welding. Resistance Welding is further classified into Spot and Seam Welding.

Spot welding is to bond metals into sheets by heat produced that creates precise bonds without affecting the rest of the sheet due to excessive heating. This is accomplished by delivering a large amount of energy in a short time to create controlled and reliable welds. Special design automated resistance welders are completely automated, and many of the industrial robots found on assembly lines use this technique.
Spot weld can speed up production processes in factories. The machines used in car factories produce as many as 200 spot welds in about six seconds. However, if the current is not strong enough or cannot hold together with enough strength, the spot weld may be weak or small.
Seam welding, on the other hand, is a more complicated process. Seam welding is a continuous process where two copper wheels replace the electrodes. The wheels create seams along two pieces of metal that bind them together. Seam welding is typically used to make items like fuel tanks.

Applications of resistance welding include tiny spot welds on implantable medical devices to welding the enormous bolts on commercial and residential water heaters.


    Write something about yourself. No need to be fancy, just an overview.


    April 2013