Everything About Our Spot Welding Equipment Service

Blog | December 15th, 2022

In today’s industrial world, every process must include new ideas and be as efficient as possible. Welding is one of the most important processes involved in the processing of metal, which puts it at the forefront of the industrial sector, which is at the forefront of all of this. Even though it’s an older method, spot welding is one of the most effective ways to join two pieces of metal together, even though it’s also one of the more traditional methods.

The question now is, how precisely does spot welding function, and what are the advantages of using it? In the following paragraphs, we will look at this effective production system and some of its more prevalent uses in the industrial sector.

Spot Welding, Defined

The joining of two pieces of metal by applying pressure and heat generated by an electrical current is accomplished through a process known as spot welding, a type of electrical welding. Because focused current eliminates resistance at the place and makes the fusion process easier, this method can only be used for sheet metals. It is the finest choice.

When it comes to the most popular uses of the spot-welding technique, the automotive industry accounts for the largest share. This is because the automotive industry requires greater levels of flexibility and durability in the weld. Because copper electrodes offer superior thermal conductivity and electrical resistance, they are the material of choice for most welders to use throughout the welding process.

The use of robots on the production line is one example of how the welding process is being continuously modernised in today’s industry. Because of this, there is an even more substantial rise in the total efficiency and speed of the welding process, which results in further growth in the general popularity and use of resistance spot welding.

How it Works

The spot-welding procedure is straightforward. It operates by delivering a high voltage current focussed on a tiny region under pressure. The electric current is strong enough to melt the metal instantly and initiate the fusion process. The workpieces must be properly aligned in this scenario. Failure to do so may result in the product failing and wasting the material.

Another key factor determining weld quality is pressure; it must be exact since too little will result in poor weld quality, and too much would harm the base material. The procedure for producing these items consists of three key phases. Anything else common in the business today is an extra step in maintaining consistent quality and standards.

Workpiece Alignment

To emphasise, once the welding process is completed, there is no turning back to the initial condition. As a result, it is critical to align the workpieces together properly. This would save time and money while also ensuring consistency in the outcomes.

Using Pressure

The application of pressure is the second stage. Spot welding uses a combination of pressure and heat generated by current flow. Pure refractory copper electrodes are ideal since they withstand heat and do not oxidise under extreme pressure. This method assures no material flaws in the workpiece, such as an unanticipated reaction or delamination.

Allowing the Current to Flow

The current is started when the pressure and location of the electrodes have been determined. A leg pedal generally opens the circuit and lets current flow, concentrating on a single spot and melting it.

The current’s duration and strength are determined by the total thickness of the two workpieces. The current is cut off after the fusion, but the pressure stays constant so that the workpieces may connect correctly.

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