Download electrochemical labeling of metal non

Student: Rodrigo Folgueira
Supervisor: Mr Ruslan Gareev
Constructing of electrochemical tool
for labeling metal parts with complex
surfaces, and calculating regimes of
the labeling.
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Companies working in the metal sector are
faced with the problem of labeling the metals
when they do not have planar surfaces.
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There are more than hundred different kinds of
metals and many more alloys. For a metal
sector company must be necessary to label all
this metals and alloys.
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Scheme of the process:
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Complex shapes.
Extremely hard material to very close
tolerances.
Very small work pieces.
No direct contact between tool and work piece.
Therefore delicate sections and weak materials
can be machined without any distortion.
A good surface finish.
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The slow rate of material removal.
The additional time and cost used for creating
electrodes.
Reproducing sharp corners on the workpiece is
difficult due to electrode wear.
Power consumption is very high.
Excessive tool wear occurs during machining.
Electrically non-conductive materials can´t be
machined.
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Electrode is an electrical conductor used to
make contact with metallic parts of the circuit.
(tool and workpiece).
The electrode is made from graphite because it has a high vaporization
temperature and is more resistant to wear.
Caracteristics of the Graphite:
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For work in wet/dry.
Low termal expansión.
Corrosion resistance.
Low coefficient of friction.
Excelent termal shock.
Self-lubricating.
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Dielectric fluid: In EDM, a liquid medium that
fills the gap between the electrode and
workpiece and acts as an insulator until a
specific gap and voltage are achieved. Used to
remove chips and cool the electrode/wire and
workpiece.
Kerosene is a good liquid dielectric liquid
because it has: high dielectric strength, high
thermal stability, low toxicity, good heat
transfer properties, and low cost.
The only problem is the flammability.
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The function of the ventilator is to move the
fluid inside the distribution channel.
The ventilator has a filter in its backside that
cleans the fluid, all the rubbish that is
generated will be stopped in the filter.
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The principal reasons of
the construction of a
distribution channel are
because the dielectric
fluid must be filtered,
cooled and recirculated.
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The holder is the place where everything will
be joined. Is where the process occurs.
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It must be a tight place, as this will solve the
problem of combustion in the case of the use of
kerosene as a dielectric fuid.
A capacitor is a device that stores an electric
charge. EDMs require capacitors to generate the
electric current used for machining.
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The Graphite tool must be fixed in a piece that
will be connected to the electricity and provides
the energy for the tool.
Thank you for your listening.
Rodrigo Folgueira