Spot welding is a process that uses a welding machine with clamps and electrodes to join two metal objects together. It was invented by Elihu Thomson in 1877 and is often used by large robotic devices to create car body parts. Safety equipment is required due to the extreme heat and high illumination generated during welding. Different types of spot welders are available for different materials and require specific pressure and time requirements. Mig spot welding is a newer form of welding that requires one of the metal objects to penetrate before fusion begins.
Welding refers to a process that is used to join two metal objects together. Spot welding is a form of welding that requires a unique welding machine. This machine is designed with clamps that join two pieces of metal together with electrodes. Electrodes are used to apply pressure and electricity to metal objects. This causes a spot weld with a metal nugget to form between the objects.
Elihu Thomson invented spot welding in 1877. Mr Thomson had determined that two sheets of metal could be fused together by applying pressure and electricity to a discrete point. When voltage is pumped into the metallic material, a nugget of molten metal is formed which is used as an epoxy element, bonding the two objects tightly. This type of welding is often used by large robotic devices when creating car body parts.
There are many types of spot welders available today. These include both large floor welders and small portable welders. Each type of welding machine includes an electric power supply and special electrode rods. The size of the solder nugget depends on the thickness of the electrode rods and the amount of pressure and time they are placed on an object.
Most soldering generates extreme heat and high illumination. This light can cause temporary and long-term blindness. It is recommended to wear a welding safety helmet including high darkening lenses. This is similar to extremely dark sunglasses.
Welding is a dangerous occupation that also requires other special safety equipment. This includes gloves, fire resistant clothing and the aforementioned goggles. When objects are fused together, the hot metal can shoot at the welder’s face or clothing. Without safety devices, this could lead to serious injury.
Welding is an art that requires a basic understanding of physics and metal composites. Each type of metal requires a specific volume of weld area to contain. This spot welding is based on both the size and type of material being welded together. Some examples of material include steel, aluminum and copper. Each has a specific pressure and time requirement for a spot weld.
Mig spot welding is a form of welding that requires one of the metal objects to penetrate before fusion begins. This type of weld is known as plug welding because the penetrated area is plugged with molten metal material. Mig welding has only been available for the last few decades and offers a comparable welding option.
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