A spot welder is a piece of machinery consisting of electrodes and what are typically called the tool holders, all used to weld or join parts together. The tool holder is an apparatus that keeps the electrodes in position while supporting the water hoses, used to cool down the electrodes. The electrodes are able  to withstand high heat being applied to them. They are the go-between for the material to be welded and the spot welder machinery.

During the spot welding process, the metal surfaces are connected by heat acquired from the conflict against the electrical flow. This resistance between the electrodes and the amperage or amount of the current flow overall, creates a firework display of sparks. The total of electrical current and heat with high amperage is what makes spot welding effective and quick. It is also a great practice for strong and consistent weld joints.

Having strong weld joints are what determine the quality of the product welded. If not enough electrical current is applied to the source material it will cause a defect in the product. The total amount of electricity needed to make a quality product depends on the density of the source material, plus the type of electrodes needed for the project.

The electrodes have vast differences, depending on what it will be used for and the source material types. If the job requires the electrode to produce high pressure or if there is a need for welding corners, each would necessitate a unique electrode. The electrodes also have a cooling feature or coolant holes, to enable them to cool down as they are removed from the welding source.

The spot welder can be used to weld sheet metal or many other metal products. You may also find a spot welder on an automobile assembly line producing cars. You may be surprised to know they are used in Orthodontist’s clinics for resizing metal braces or bands.

There are three phases within the spot welding procedure: the first phase is when the electrodes and the metal are brought as one along with high amounts of pressure, the second phase is when the current is quickly shot through the electrode, and the third phase is the holding time that allows the pieces to bond without the current on.

There are safety measures involved in the Spot Welder process, they require that the electrodes are securely fastened, always be sure to protect your eyes from the light or sparks, and to also protect your hands.

These are basics of what the Spot Welder is capable of, its applications, and safety concerns.

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Tags: spot welder, Welders, welding, welding equipment