Research On The Forging Process Of Automobile Generator Claw Pole

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The claw pole is one of the crucial components of the generators. Also known as magnetic poles, it is the generator’s part that forms the rotating magnetic fields. That’s the reason why it is one of the essential components. The formation of the claw poles has advanced greatly over the last few decades.

For a long time, casting has been the method of forming generator claw poles. But it has limitations such as poor electromagnetic performance, making it ineffective. The other method is stumping, which also comes with a share of limitations, such as low material utilization. The stumping method is also cumbersome and has a poor electromagnetic performance.

Forging is the new way of producing generator claw poles. The technology addresses almost all limitations of casting and stumping. With forging claw poles, the process is quite straightforward. It also produces high and better electromagnetic performance. The other benefit of forging technology is that you can make even the most complex shapes like that of generator claw poles.

For a better perspective, we are going to look at some of the common forging processes for claw poles. At the end of this article, we will look at the newest technology and why it offers the best forging.


Main Claw Pole Forging Processes

The process for forging the automobile generator claw pole is more like all other automobile parts using hard metals. There are various types of forging options that can be used. In this guide, we look at some of the most commonly used processed. Check out the following:


  1. Hot-Forged Cold and Refined Forging

The hot-forged cold, and refined forging process uses the open forging method on a press or forging hammer. The material is first heated to crystallization temperature to reduce the deformation resistance. It is a forging process that also includes aspects of cold forging.

The advantage of hot-forged cold and refined forming process is convenience and improved tissue performance of the flaw poles. On the other side, there is lower yield performance, and the claw pole shoes may be difficult to fill. So, the forging process may not be ideal for the formation of claw parts.


  1. Warm Forging Cold Forging Joint Process

This is another forging process that is for the production of automobile parts. It combines both characteristics of hot and cold forging. The steps include heating, radial extrusion, punching, phosphating saponification, and pressurization, among many other aspects. The heating process is meant to reduce the deformation process by heating to the crystallization point. At the molten form, you will be able to forge the machine with ease. The combination of both techniques also reduces the effect of oxidation of the steel. However, this process can result in poor bending, which might result in cracking. This makes it not the most ideal for claw poles.


  1. High-Speed Temperature Extruded Forming

This is another technique used for the forming of claw poles. The process includes almost all steps of the hot forging process. The material is heated and then high speed extruded. There are many benefits that come with this technique. The process requires less heating temperature, there is less oxidation, and the dimension accuracy is better. However, you still need cold refining and cutting edges to produce fine products. Material consumption is also large. This makes it not the most ideal.


  1. The New Forging Process (Closed Hot Mold Forging)

The new forging process is alleviating most of the limitations from the above-explained processes. It is a closed hot mold forging that uses pre-formed molds. These are the molds that form the shape and size of automobile claw poles. It is a hot forging process where the material heats to crystallization before pressing. The material is then put between two molds that forms even the claws in just a single press.

The closed hot mold forging process is pretty straightforward and has high material utilization. The technique produces high-quality parts, and there is no need finishing work. It is also cheaper and does not include a lot of steps such as cutting edge. These are some of the advantages that make the forging process popular for metal parts production.


In conclusion, the new forging process shows many potentials, and we expect that it will get better with time. There a lot of developments going on regarding and this shows better days ahead. Check out the latest advancement to ensure that you are buying the best closed hot mold forging technology.


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