I have in recent times, many articles found was where eroded with rectangular pulses of about 10 to 100 µm. The advantage was usually that the plants was very cheap.
But I can of no meaningful applications which require an average roughness of 4 to 8 µm, a thermal-affected zone of minimal 30 to 50 µm and a low processing accuracy (< 20 µm). It is then difficult to understand why an optimization (e.g. ANOVA) is performed in a very small limited range of process parameters.
The scientific degree of novelty of this work is, of course, very limited.
OPTIMIZATION OF PROCESS PARAMETERS OF MICRO WIRE EDM
A thesis submitted in partial requirements for the degree of Bachelor of Technology In Mechanical Engineering by Ricky Agarwal 10603029.
http://ethesis.nitrkl.ac.in/1937/1/ricky's_project2.pdf
It should always apply the principle, what I simulate or calculate I need to know so well that I can arrange the results properly.
Dear Mr Schulze,
such pulses are used on the fast wire (chinese style machine with reciprocating wire).
the wire is made out of molybden (so it won't wear with long pulses)
The reachable roughness is about Ra = 0.7 um. The wire wears about 20 um on the diameter after 50 hours at full speed (depending on the machine make, 100 to 300 mm2/min). Wire bobbin is 200 or 400 m long.
Negative polarity. Special liquid (iso-butil-tri glycol water based).
Such machines are widely used in Asia.
Best regards, hope to see you at ISEM!
And there will always be optimized this but very large parameter range in residential areas. It's seriously asking the question, what is this. I would perhaps even understand when trying over longer pulse durations and work currents to find "cheap" parameter combination, the "optimized" to cut or wear a. For the surface structure and topology, it will never be a "real Optimum".
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