Welding tongs/pliers.
Widespread use of spot welding in the manufacture of large dimensions, such as cars, airplanes, cars, light metal construction, etc., required to create a mobile and portable point machines and mobile devices to fixed machines, welding products allow larger sizes.
Portable devices for spot welding have different names: pliers, clamps, welding guns for spot welding, etc.
In most cases, the most convenient spot welding device, connected to the welding transformer, flexible wires, while the product is moved only one welding device having a relatively low weight, and the most difficult part of the contact machines, welding transformer, ie, remains in place.
The presented figure show several types of portable welding clamp with pneumatic pressure of being connected to the transformer flexible wires. The wire or cable for connecting welding equipment has a special device that provides a minimum inductance of the welding circuit and the minimum weight of the cable. To reduce the weight of the flexible multi-core cable is a rubber hose and cool running water. Such devices are widely used, for example, in the manufacture of automobiles. In some cases, for welding thin metal pole are comfortable welding guns. The gun is attached to one end of the welding transformer secondary winding, the other end of the coil attached to the product. This allows for the weld spot anywhere in the product, without supplying an electrode on the back side of the metal.
See also:
Electric Resistance Welding
Pliers for Welding
Spot Welding
The Spot Welding Process
The Spot Welding Process (Part 2)
Special Types of Spot Welding
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