An electrochemical machining (ECM) is to be used to cut a through hole into a 12 mm thick aluminum plate
Q. An electrochemical machining (ECM) is to be used to cut a through hole into a 12 mm thick aluminum plate. The hole has a rectangular cross-section, 10 mm × 30 mm. The ECM operation will be accomplished in 2 minutes, with efficiency of 90%. Assuming specific removal rate for aluminum as 3.44 × 10-2 mm3/(A s), the current (in A) required is_______________(correct to two decimal places).
Ans: 968.992
Sol:
