Electrical sparkle machining is a is very important one annulus of injection mould processing technology. Because of the limitation of numbering control machining tool, a lot of material level and shut-off part of injection mould all need to complete by the electric spark machining, electrical sparkle machining  is completely different from the other processing principle of injection mold.The principle of electrical sparkle is through electrode discharge to injection mold workpiece and produce high temperature, thus melted steel material to achieve the shape we want. Below are some features of electric spark machining: