Electrochemical Effects on Shape Reproduction in Electrochemical Machining
There have been many attempts to calculate the shape produced by an electrode during electrochemical machining but few have made allowance for the variability of current efficiency and polarization with current density.
The effect of these parameters has been considered theoretically for the experimentally simple but sensitive case of a spike formed when using a tubular drill. Comparison of theoretical and practical results for NaCI, Na NO3, Na CIO3 and Na SCN when machining stainless steel shows that both efficiency and polarfcation make an important contribution to shaping performance. The novel electrolyte sodium thiocyanate has been found to give very good shape reproduction with stainless steel.
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