Author: Haroon Khalil

In this process, a photographic negative film is made that contains the accurate image of the part to be made. The negative is used as component images on to a metal sheet that is covered with a photographic resisting coating as shown in Figure 23.6. When it is exposed to ultraviolet light, the coating on the…

Surface finish in ECM is affected by the following factors: Unevenness of surface occurs due to potential gradient across the gap and potential difference inside the grain of different alloying element in the work material. If the potential gradient across the gap is higher unevenness of surface finish will be less and vice versa. Sporadic…

Electrolytes Alloys 20% NaCl Iron-based alloy HCl or mixture of brine and H2SO4 Nickel-based alloy 10% HCl + 10% HF + HNO3 Titanium-based alloy NaCl CO-Cr-W alloy Strong alkaline solution WC (Tungsten Carbide) alloy Requirement of Flow of Electrolyte

Therefore,