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ELECTROCHEMICAL LABELING OF METAL NON-PLANAR SURFACES. Student : Rodrigo Folgueira Supervisor: Mr Ruslan Gareev. MAIN IDEA. Constructing of electrochemical tool for labeling metal parts with complex surfaces , and calculating regimes of the labeling . WHY THIS TOPIC.
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ELECTROCHEMICAL LABELING OF METAL NON-PLANAR SURFACES Student: Rodrigo Folgueira Supervisor:MrRuslanGareev
MAIN IDEA Constructingof electrochemicaltoolforlabeling metal partswithcomplexsurfaces, and calculatingregimes of thelabeling.
WHY THIS TOPIC • Companiesworking in the metal sector are facedwiththeproblem of labelingthemetalswhenthey do nothaveplanarsurfaces. • 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.
ELECTROCHEMICAL DISCHARGUE MACHINING • Scheme of theprocess:
ADVANTAGES OF EDM • 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.
Disadvantages of EDM • 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.
THE ELECTRODE • Electrodeis an electrical conductor used to make contact with metallic parts of thecircuit. (tool and workpiece).
Material of theelectrode The electrode is made from graphite because it has a high vaporization temperature and is more resistant to wear. Caracteristics of theGraphite: • For work in wet/dry. • Low termalexpansión. • Corrosion resistance. • Low coefficient of friction. • Excelent termal shock. • Self-lubricating.
Dielectric fluid • 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.
Ventilator and filter • 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.
Distributionchannel • The principal reasons of the construction of a distribution channel are because the dielectric fluid must be filtered, cooled and recirculated.
Holder • The holder is the place where everything will be joined. Iswheretheprocessoccurs. • Itmust be a tight place, as thiswillsolvetheproblem of combustion in the case of the use of kerosene as a dielectricfuid.
Capacitor A capacitor is a device that stores an electric charge. EDMs require capacitors to generate the electric current used for machining.
Electrodesupport • The Graphite tool must be fixed in a piece that will be connected to the electricity and provides the energy for the tool.
Thankyouforyourlistening. Rodrigo Folgueira
