Find the time required to etch to the specified depth

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Reference no: EM131255868

Chemical milling is used in an aircraft plant to create pockets in wing sections made of an aluminum alloy. The starting thickness of one workpart of interest is 20 mm. A series of rectangular-shaped pockets 12 mm deep are to be etched with dimensions 200 mm by 400 mm. The corners of each rectangle are radiused to 15 mm. The part is an aluminum alloy and the etchant is Na OH. The penetration rate for this combination is 0.024 mm/min and the etch factor is 1.75. Determine

(a) metal removal rate in mm3/ min,

(b) time required to etch to the specified depth, and

Reference no: EM131255868

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