EDM Machining Service
Electrical Discharge Machining(EDM) is suitable for processing complex components such as precision small cavities, narrow slits, grooves, and corners.
EDM Machining Service is a non-traditional machining method that uses electrical discharge to process metal materials. The principle is to establish a certain electric field between the workpiece and the electrode, causing the surrounding medium in the discharge area to form ionized gas. When the electrode discharges, the charge between the electrode and the workpiece will be released, and an electric spark will be formed in an instant. The electric spark will be accelerated by the longitudinal and transverse magnetic fields in the discharge area, impact and melt the surface of the workpiece at high temperature, thereby achieving the machining purpose.
EDM machining service must meet three conditions
1. Pulse power supply must be used
2. An automatic feed adjustment device must be used to maintain a small discharge gap between the tool electrode and the workpiece electrode
3. Spark discharge must be carried out in a liquid medium with a certain insulation strength (10-107 Ω· m).
What is EDM Machining Service?
EDM Machining Service is a special machining method that uses the electrical erosion generated by the pulse discharge between the two electrodes immersed in the working fluid to erode conductive materials. It is also known as electrical discharge machining or electrical erosion machining, abbreviated as wire EDM machining.
Application of EDM Machining Service
1. Automotive Industry
The production of complex automotive parts and molds used for processing plastic parts, castings, forgings, or stamped parts. Mainly involved in the early stages of product production, the shortened product lifecycle and cost pressures have put forward high requirements for production flexibility and integration processes, and errors are not allowed to occur.
2. Aerospace
Produce precision parts of complex high-temperature heat-resistant alloys, titanium alloys, aluminum, and other materials.
3. Medical implants and medical devices
Produce human implants and medical devices made of stainless steel, titanium, or conventional materials.
4. Electronic and mechatronics integration industry
Used for processing molds, high-quality electrical chassis components and components required for mass production of plastic parts, alloy castings, and stamped parts.
5. Energy industry
Important parts for processing high heat-resistant alloys and molds for semi-finished product manufacturing.
In summary, EDM Machining Service is a precision machining method that can be applied to the machining of various complex shapes and high-precision components. It has broad application prospects in many industries
FAQs For EDM Machining Service
What is difference between EDM Machining Service and wire cutting?
The main processing object of the electric discharge machining (EDM) forming machine is printing delicate patterns or curved surfaces on the surface, while the wire cutting machine mainly processes flat workpieces. The motion of electric discharge wire cutting is to move the workpiece, and electric discharge machining is achieved by moving the electrode.
Electrical discharge machining can process through holes and blind holes, suitable for processing the cavities of complex plastic molds and other parts, as well as engraving text, patterns, etc; And wire cutting can only process through holes, which can conveniently process small holes, complex narrow slits, and various complex shaped part.
What material can not be cut using EDM Machining Service?
Iron materials: The principle of electrical discharge machining is to use an arc to form a discharge between two electrodes, causing high temperature, melting or oxidation on the surface of the workpiece, thereby achieving machining. Iron materials have good conductivity, making it difficult to generate discharge and achieve processing.
Non conductive materials such as glass and ceramics: Due to the high electrical resistivity of non-conductive materials, it is impossible to form a discharge channel during discharge and achieve the purpose of processing.
Flammable materials such as rubber and plastic: Due to the high temperature and oxidation reactions generated by flammable materials during discharge, they are prone to fire. Therefore, this type of material cannot be used for electrical discharge machining.
What is disadvantage for EDM Machining Service?
1、 High surface roughness during machining
EDM Machining Service is different from laser or plasma cutting technology. It uses electric discharge for cutting, which can cause electrostatic interference, electrochemical reactions, and other problems during cutting. This can lead to the machining surface not being smooth enough, and also produce some small cracks and holes. Therefore, it may not be suitable in some high-precision and high surface quality application scenarios.
2、 High processing costs
The equipment and usage cost of electric discharge machining machines are relatively high, because the processing process of this technology requires the use of consumables such as electrode wires and coolant, and the equipment itself also needs regular maintenance and adjustment. In addition, the time required for electric discharge wire cutting is relatively long, so the processing cost will be higher than other cutting technologies to a certain extent.
3、 Limited processing depth
Although EDM machining can cut small geometric shapes in metal materials, its processing depth is limited, generally only reaching a few millimeters or less, and cannot process thicker metal materials. Therefore, in most industries, this technology can only be used as an auxiliary processing method.
how does EDM Machining Service work?
EDM machining utilizes pulse discharge between the tool electrode and the workpiece to generate high temperature and high pressure in the discharge channel, causing local metal melting or even vaporization, thereby achieving material removal. This process is carried out in liquid media such as kerosene, deionized water, etc. These media not only play a role in cooling and chip removal, but also help maintain the stability of the discharge gap.
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