Time to read: 6 min
Sinker EDM technology creates extremely precise blind holes and cavities in conductive materials through electric sparks. Compared to traditional mechanical cutting, which can induce material stress and property changes, Sinker EDM utilizes electrical energy for material shaping and removal without causing such effects.
Working Principle
A Sinker EDM machine employs the principle of spark erosion to remove metal from a workpiece. Key components include the power supply, servo-mechanism, dielectric fluid, electrode (tool), workpiece, dielectric oil reservoir, pump and filtration system, and chiller system. These components work in concert to generate high temperatures between the electrode and the workpiece through precisely controlled electric discharges, causing local melting and vaporization of the material, and forming a cavity in the workpiece that mirrors the shape of the electrode.
Material Selection and Applications
Sinker EDM is suitable for machining conductive materials such as steel alloys, copper, aluminum, titanium, tungsten carbide, and nickel alloys. These materials are chosen for their high strength, wear resistance, and corrosion resistance in specific industrial applications. Electrode materials typically include graphite, brass, copper alloys, molybdenum, and tellurium copper, which possess high strength, temperature resistance, and wear resistance.
Industry Applications
Sinker EDM has a wide range of applications in industries such as automotive, tool and die, aerospace, medical, electronics, and research and development. It is particularly suitable for manufacturing complex cavity designs and machining delicate parts that cannot withstand mechanical stresses.