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Question 3 a) In an Electrochemical Machining process, the feedstock is made of an aluminium alloy...

Question 3

a) In an Electrochemical Machining process, the feedstock is made of an aluminium alloy (Ultimate Tensile Strength = 572 MPa, Tensile Yield Strength = 503 MPa). The desired time to machine a hole (?=10 mm) through a 20 mm-thick part is 2.1 min at a feed rate of 0.18 mm/s. What are:

(i) the efficiency of the process in %, and

(ii) the current requirement in amps to achieve this machining time target?

b) Describe in detail the process of circular sawing with the aid of a freehand sketch. What are the two major mechanisms by which circular sawing is achieved and what materials are commonly used as circular saws of each type?

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samet mamat answered 2 years ago
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