The Electrical Discharge Machining (EDM) process is a popular manufacturing technique. The general use of EDM is to create intricate shapes and patterns. This blog post will explore the basics of the EDM types.
Moreover, I will explain about the advantages of using this technique. We will also provide some tips for those considering using the EDM process in their next project.
Types of EDM:
EDM wire cutting is a type of EDM machining that uses a thin wire to cut through materials. EDM wire cutting are generally used to cut through a variety of materials. The EDM process is suitable for metals, plastics, and ceramics. EDM wire cutting machines use various methods to create the electrical field needed.
It is necessary to cut through the material. The most common process is to use an electrode that is in contact with the workpiece. Other methods include using an electrode that is not in contact with the workpiece. Moreover, it also includes plasma or lasers. The other use of EDM wire cutting is to create prototypes, production parts, or one-off pieces.
EDM wire cutting machines are also often used for reconditioning or repair services. EDM wire cutting machines can be either CNC or manual machines. CNC EDM wire cutting machines are more expensive. But these machines offer higher accuracy and repeatability. Manual EDM wire cutting machines are less expensive but need more operator expertise.
You can find EDM Wire cutting machining services at many companies across China. The best way to find an EDM Wire cutting service near you is to search online. Or ask for recommendations from colleagues who have used EDM Wire cutting services. More detail about the types of EDM is as under;
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Die sinking EDM:
Die sinking EDM, also known as sinker EDM or volume EDM. It is a type of electrical discharge machining in which a shaped tool, called a die, used to machine a workpiece. The die is generally mounted on the bottom of the EDM machine’s electrode holder. And the workpiece in this mounted on the top.
As the electrode holder descends into the die, a spark generated between the electrode and the workpiece. This spark vaporizes the material in its path, forming the desired shape very slow. Once we achieve the shape as per need, the electrode holder raised. And the finished workpiece is essential to remove from the machine.
Die sinking EDM is a versatile machining process. We use EDM to create high precise and complex shapes in a variety of materials. It is generally used for prototyping and small-batch production. Moreover, the other use of it for creating dies, molds, and other tools. Die sinking EDM can also is in use to machine difficult-to-reach areas. The areas that would be inaccessible with conventional machining methods.
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Wire EDM:
Wire EDM is a process that uses electrical current to melt and cut through metal. A thin wire is strung between two posts, and an electrical current passes through the wire. The current melts the metal, and the wire guide cuts through the metal according to the desired shape.
This process we use to cut any conductive material. The conductive materials include steel, aluminum, brass, and copper. The other main usage of Wire EDM is to create intricate shapes or to cut materials. The materials that are too hard to machine using traditional methods. The process is also relatively clean, as there is no need for cutting fluids or other coolants. Moreover, we can also use Wire EDM on heat-sensitive materials without causing damage. As a result, this process has become very popular in recent years.
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Hole drilling EDM:
Hole drilling EDM is a type of electrical discharge machining. The Hole drilling EDM uses an electrode to burn a hole through a workpiece. It is like other types of EDM, but the electrode has a special design for hole drilling. This type of machine is often used to make small holes in hard-to-reach places.
We also use this to make precision holes in parts that we use in high-pressure applications. The usage of Hole drilling EDM is to drill blind holes, which are holes that do not go all the way through the workpiece. Blind holes are often used for threading or tapping applications.
This type of machining is typically done using a CNC machine, although it is possible in manual ways. A CNC machine programmed to follow a set of instructions. The instructions tell it how to move the electrode and how much current to use.
The operator inputting the instructions must have understanding of the machine’s capabilities. He also has to aware about limitations and the machined material. The process of hole drilling EDM is very slow as compared to others. The Prime Technology has experienced operators. So it is often used in conjunction with other methods, such as milling or turning, to speed up production.
Advantages of EDM:
- One of the advantages of EDM is that it is versatile and we use it to machine a wide variety of materials.
- We also use these machines to manufacture parts with very tight tolerances.
- EDM does not cause any work-hardening of the material. It means that we can use the same to machine parts that will be heat treated.
- Another advantage of EDM is that it produces a very smooth surface finish.
- Finally, because EDM does not create any cutting forces. Thus, we can use it to create delicate parts without damage. There are many advantages to using EDM in your machining operations.
Final Words:
The EDM process is an excellent option for manufacturers. The manufacturers those are looking to create precision parts with tight tolerances. It is important to work with an experienced EDM services provider, who can help you select the proper tooling and machining parameters. It will ensure your parts to meet your exact specifications.
