45 Wire electrical discharge machining WEDM is a pro cess used to manufacture conductive hard metal compo nents It uses a

Question

45 Wire electrical discharge machining WEDM is a pro cess used to manufacture conductive hard metal compo nents It uses a continuously moving wire that serves as an electrode Coating on the wire electrode allows for cooling of the wire electrode core and provides an improved cutting performance The article High Performance Wire Electrodes for Wire Electrical Discharge Machining A Review J of Engr Manuf 2012 1757 1773 gave the following sample observa tions on total coating layer thickness in um of eight wire electrodes used for WEDM 21 16 29 35 42 24 24 25 Calculate a 99 CI for the standard deviation of the coating layer thickness distribution Is this interval valid whatever the nature of the distribution Explain

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