Articles
Cathode
The cathode is the electrode at which reduction takes place. In electrochemical machining the cathode is the negative electrode and is used as tool to machine the positive workpiece. Read more…
Coating
If in electrochemical machining a counterpulse is used (for cleaning the cathode or for improving the anodic dissolution reaction), an electrically conductive coating can be used on the cathode to protect the cathode from dissolving. Read more…
The current density
The current density - J is the ratio of the current I to the machining area A. The current density is commonly expressed in amperes per square centimetres. Electrochemical machining is performed at high current density, usually tens or even hundreds of amperes per square centimetre. Read more…
Electrochemical Drilling (ECD)
As tool electrode a hollow tubular cathode is used. The cathode can be made of titanium having an insulating exterior coating, but also tubes made of glass are used. Read more…
Electrodischarge Machining (EDM)
At the same time the electrode is susceptible to wear. Furthermore, EDM is identified by its slow machining speed. Read more…
Aluminium
Aluminium is a ductile, soft and light weight silvery white or dull grey metal. Read more…
Chromium
Chromium is a hard, steel-gray, shiny, metal that breaks easily. The pure metal chromium can be electrochemical machined, but more often chromium will be machined as alloying element in steels or other alloys. Using chromium in steel increases the hardness and the corrosion resistance of the steel. Read more…