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  What's EDM Machining 

  Electrical Discharge machining is a Electrochemical machining method that use  the flash discharge of electric pulse to remove small particles from the surface of the workpiece.Thee processing principle is to utilize the high-temperature and high-pressure effects of electrode discharge and through repeated arc discharge corrosion,gasification and dissolution of metal electrodes and materials on the workpiece. During arc discharge corrosion, high temperatures and pressures are released, removing the material.The rule is to form an arc discharge between the workpiece and the electrode, discharge at the bottom of the contact between the electrode and the workpiece, and generate a thermal deposition process, which then processes the workpiece.

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Characteristic of Electrical Discharge Machining 

•Processing high hardness metal materials and material that is difficult to cut

•Extremely high machining accuracy and good surface quality, because of utilizing the effects of arc discharge corrosion, gasification and dissolution.

•Low temperature, without thermal deformation.

•CAD/CAM and CNC Technologies can be used to achieve digital control of machining , improving the level of machining automation.

•Achieve precise scratches and avoid damage that may cause hidden disputes.

Some Main Influence factors of EDM Machining

⇒Qualit of the working fluild is one of the key factor affecting machining accuracy.

⇒Electrode material and working current intensity can affect the processing effect, so metal materials with strong corrosion resistance are usually chosen

⇒Workpiece materials are very important. Hard materials sush as tungsten alloys,steel, diecasting part can be processed by EDM machining. Soft materials are difficult to machine

⇒Accuracy control of pulse time is the main parameter of Electrical discharge machining.

⇒Shape ,Size, Surface finish and Machining accuracy of part will also affect the machining effect.

Some Typical application area of EDM Machining

Electrical discharg machining has high machining accuracy and efficiency, it also needs to pay attention to many details. In practical applications,appropriate parameter adjustments and equioment selection are required for differnt processing objects and requirements to achieve the best processing effect.EDM has many applications ,such as aviation ,aerospace, automobile, mold, electronics, medical equipment and watches .

•Mold manufacturing: EDM can accurately depict the complex curve and angle of the mold, and can realize precision micro machining and 3D machining,especially for the machining of some difficult and large molds. The processing method can greatly reduce the processing time of the mold, while also improving the accuracy and surface quality of the mold.

•Mechanical Manufacturing:EDM can process tiny holes, precise slits and other unique structural forms, which have an important impact on the performance of manufacturing mechanical devices. EDM can also process steel,stainless steel, alloy steel and other high hardness materials ,which can meet the processing requirements that can't be met by some traditional cutting methods in the field of mechanical manufacturing.

•Aerospace Field: The core parts of aeroengines need precise manufacturing that often involve high temperature, high pressure and other high strength effects, EDM can help to manufacture more  appropriate parts, thus improving the safety and reliability of aerospace equipment.

Electrical discharge machining can also be used for metal drilling and cutting , which is beyond the traditional machining methods. There are also many applications in medical equipment ,watch manufacturing ,chemical engineering, biotechnology and other fields.