ELMACH

Electroerosive machining is a method of metalworking based on obtaining electrical erosion accompanying electrical discharges.

It is mainly used for machining specialized machine parts and other difficult-to-cut materials, as it allows for obtaining complicated shapes that are difficult or impossible to perform by machining (e.g. internal sharp corners and / or thread in hardened material or carbide), there is no force here cutting affecting the workpiece (although there is an impact on the outer layer, which hinders further processes such as polishing). Electroerosive machining includes electrospark, anodic-mechanical and electrocontacting. Machining is carried out on drilling machines, saws or anodic-mechanical grinders, etc. It is used for machining cemented carbides as well as shaping and regeneration of plastic forming tools, e.g. forging dies, injection molds.

Generally, we have two basic types of electrical discharge machining: electrical discharge drilling and electrical discharge cutting (WEDM - Wire Electrical Discharge Machining). In general, the difference between these methods is the type of working electrode (in the case of WEDM it is a rewound wire), the energy of discharges and the dielectric used. EDM treatment can be used for all materials whose electrical conductivity is better than 10-2 S / cm.

Application of electroerosive machining