Spot Welding for a Variety of Metals

Article From thefabricator.com
By Roger B. Hirsch, Contributing Writer
April 24, 2001

Brief Summary:

Spot welding is most commonly used for the joining of sheet metal. However, this process can be used for joining a wide variety of metals.

Resistance welding equipment has many uses that many people often don't think about.
Everyday items that some may not associate with resistance welding owe their very existence to this versatile process.
To most manufacturers, spot welding is the most economical way to join two pieces of sheet metal.
While joining sheet metal is the most common use for the process, resistance welding (RW) equipment actually can be used for a large variety of joining and heat-treating projects, some of which are not so well-known.
Resistance Welding Annealing Annealing of production components often is required.
Eighty-four individual spot welds are inside a four-slot toaster
Joining Dissimilar Metals Using Percussion Welding
The trick to this process is synchronization between the nail feed and the welding control.
During destructive testing, the stamped part is gripped in a vise just below the pivot hole, and a hammer is applied to the side of the hardened ball.

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