
430 Fundamentals of Machining Processes
13.2.4 Electrochemical Buffing
Electrochemical bufng (ECB), shown in Figure 13.4, uses a carbon ber
cloth that rubs the anodic workpiece against a revolving cathode ber buff.
NaCl or NaNO
3
electrolyte is supplied to the machining zone, while the
machining current ows from the workpiece to the cathode through the
carbon cloth. Electrochemical dissolution of the anodic specimen mainly
takes place on the surface of the specimen where it is rubbed by the carbon
Spring pressure
Electrolyte supply
Oscillation
Rotating workpiece
stick
FIGURE 13.3
EC supernishing using conductive stones. ...