The surface irregularities of electrodes used in an electrochemical ma

The surface irregularities of electrodes used in an electrochemical machining (ECM) process are 3 μm and 6 μm as shown in the figure. If the work-piece is of pure iron and 12V DC is applied between the electrodes, the largest feed rate is_____mm/min Conductivity of the electrolyte 0.02 ohm−1mm−1 Over-potential voltage 1.5 V Density of iron 7860 kg/m3 Atomic weight of iron 55.85 gm Assume the iron to be dissolved as Fe+2 and the Faraday constant to be 96500 Coulomb.51.542

Answer» The surface irregularities of electrodes used in an electrochemical machining (ECM) process are 3

μ

m and 6

μ

m as shown in the figure. If the work-piece is of pure iron and 12V DC is applied between the electrodes, the largest feed rate is_____mm/min

Conductivity of the electrolyte	0.02 $o h m^{- 1} m m^{- 1}$
Over-potential voltage	1.5 V
Density of iron	7860 $k g / m^{3}$
Atomic weight of iron	55.85 gm

Assume the iron to be dissolved as

F e^{+ 2}

and the Faraday constant to be 96500 Coulomb.