sähköpurkukoneistuksen

Sähköpurkukoneistus, often referred to as electrical discharge machining (EDM), is a manufacturing process that uses electrical discharges to remove material from a workpiece. This process is characterized by its ability to machine very hard materials or intricate shapes that are difficult or impossible to create with traditional machining methods. The process typically involves a workpiece submerged in a dielectric fluid, such as deionized water or oil. An electrode, made of a conductive material like copper or graphite, is brought close to the workpiece without touching it. An electrical current is then applied, creating a series of controlled sparks or electrical discharges between the electrode and the workpiece. Each spark vaporizes a tiny amount of material from both the electrode and the workpiece. The dielectric fluid serves to cool the area, flush away eroded particles, and act as an insulator to prevent short circuits. The relative motion between the electrode and the workpiece, controlled by a servo mechanism, determines the shape and dimensions of the final part. EDM is widely used in industries like aerospace, automotive, and mold making for creating precision components, dies, and tools. Its advantages include high accuracy, excellent surface finish, and the ability to machine hardened steels and exotic alloys.