All the Advantages and Applications of Spot Welding

Blog | May 10th, 2022

Metal workpieces undergo numerous processes before they can become useful parts and products. One of the processes they are often exposed to is welding.

Welding is a fabrication process wherein metal workpieces are joined by melting their parts together. The joined parts are then cooled, concluding their fusion process. Different types of welding can be implemented to workpieces. Spot welding, however, is a type of welding that many manufacturers maximise due to its accompanying benefits and intended applications.

An Introduction to Spot Welding

Spot welding is a resistance welding process that can be maximised in thinner metal materials. This welding process maximises copper alloy electrodes in providing electric current and pressure to the spot-weld area. The tips of these electrodes are situated on the opposite sides of the workpieces. Once the heat has been generated, some areas of the metal melt. The pressure from the electrodes, alternatively, squeezes the molten parts to form the weld.

Advantages and Disadvantages

The process of spot welding is straightforward. Hence, many industries utilise this process in processing metal sheets.

One advantage of spot welding is that it can weld any conductive metal without any issues. It can likewise achieve proper weld strength with these thin metal workpieces without burn risks. Spot welding can also create efficient, controlled, and repeatable welds very quickly. This advantage help businesses save time and effort as opposed to other welding processes.

The welding process can also be beneficial for many since their electrodes can already handle thermal conductivity issues by dispersing the heat away from the welds.

But just like other types of welding, spot welding can also boast some disadvantages. For one, spot welding cannot be maximised fully if a side of a workpiece cannot be accessed. Spot welding may likewise harden the nugget and its surrounding material, which could lead to cracks and other similar damages. Sometimes, spot welding can also affect the physical and chemical properties of workpieces. Without any careful processing, some metals may end up acquiring weaker corrosion resistance.

Spot Welding Main Applications

All the benefits of spot welding make it highly effective in various industries.

The automobile industry, for instance, maximises spot welding in creating various car parts. The electronics industry, alternatively, utilises spot welding in creating electronic components, connectors, solenoid assemblies, gas sensors, printed circuit boards, cables, switches, and many more. Fabrication and repair shops also utilise spot welding in repairing metal doors, windows, car parts, and many more.

Other industries that take advantage of spot welding are battery manufacturing and orthodontics. If you have more questions about spot welding, you can contact us at McKean’s Sheetmetal Fabricators. We are a Melbourne-based sheet metal fabrication and steel supply Australian company committed to superior customer satisfaction by providing the product you want, when you want it, at an agreeable price. Our products, services and business practices are always of the highest quality, meeting and often exceeding your expectations.

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