Hlw I am Ashu and This slide design by me for you to give a more great ideas about electro chemical machine I hope you enjoyed Thank you

1. LAYOUT
1. TITLE
2. OBJECT
3. APPARATUSREQUIRED
4. PRINCIPLE
5. WORKINGPROCESS

2. 6.DIAGRAM
7.PROCESS PARAMETERS
8.APPLICATION
9.MERITS
10.DEMERITS
11.RESULT
12.PRECAUTION

3. ELECTROCHEMICALMACHINING
OBJECT:- To study and practice of
electro chemical machining.
Apparatus Requires :- Workpiece,
Electrolyte, DC
supply source ,ecm machine etc.

4. 3.PRINCIPLE :- the principles and applications of electro
chemical machining or ECM.The working of ecm is based on
Faraday’s law of electrlysis
FARADAY’SLAWSTATETHAT - The mass of a metal changed
by an electrode is proportional to the quantity of electric
charges passed to that electode
[ Components of ecm – Cathod-Tool ,Anode-Workpiece,
The electrodes to be placed with a
gap 0.5 mm .
The Anode and cathodes must be immerged into
electrolyte]

5. In this machining process , tool is
connected with the negetive terminal
of battery (work as cathodes)and
workpiece is connected with the positive
terminal of battery (work as Anode) .
They both are placed in a electrolyte
solution with a small distance.
When the DC current supplied to the
electode ,metal removed from
workpiece .This is basic foundamental of
electro chemical machining.

6. Elecrolyte
A Substance that dissociates into the
ions in solution and acquires the
capacity to a conduct electro.
FUNCTION OF ELECROLYTE
1. The current flow between the tool
and w/p through electrolyte .

7. 2:-The heat produced is dissipated by
liquid electrolytic solution.
3:-The product of machining is
removed by solution.
PROPERTIES OF ELECROLYTE
1. High electrical conductivity.
2. High current efficiency.

8. 3.Good Surface finish and integrity.

9. wORKINGPROCESSURE
Electro chemical machining works
inverse as electroplating process.
Metal is removed from Anode into
electrolyte and slage form by reacting
Opposite ions available in elecrolyte.
This process works as follow.

10. •In ecm ,the electrolyte is so chosen that
there is no plating on tool and shape of
tool remain unchanged.
Generally Nacl into water takes as
electrolyte.
• The tool is connected to negetive
terminal of battery and w/p is
connected to positive terminal of
battery

11. •When the current passes through
electrode , reaction occur at Anode or
workpiece and at the cathode or tool .
• Due to potential difference ionic
dissociation take place in elecrolyte.
•When the potential difference applied
between the work piece and tool ,
positive ions move towards the tool
and negetive ions move towards the
work piece.

12. • Thus the positive ion moves towards
tool .As the positive reaches to the tool
,it take some electron from it and
convert into gas form .This gas goes
into environment.
•The negetive ions moves toward the
work piece (Anode) . This electrons
removes material from the work piece
and removed materials flowing
through electolyte and goes to the
container .

15. PROCESS PARAMETERS
1:- Power supply
• Type –Direct current
•Voltage- 2 to 35 volt
•Current -50 to 40,000 A
•Current density-0.1A/mm2 to
5 A/mm2

16. 2:-Electolyte
•Material –Nacl and NaNO3
•Temperature- 20°C - 50°C
•Flow rate -30 m/s to 60 m/s
•Pressure- 24 kgf/cm2 (1.9Mpa)
3:-Working gap -0.05 mm to 0.07mm
4:-Electrod material-copper ,brass ,
bronze etc.
5:- surface roughness – 0.2 to 1.5 micro m.

17. APPLICATION
1. Ecm is used to machining disc or
turbine rotor blades.
2. The most common of application
ecm is high accuracy finishing.
3. It can be used for slotting very
thin walled collets.

18. MERITS
1. It can be machine very complicated
surface.
2. It can machined harder metal than
the tool.
3. Better surface finish.
4. A single tool can be used to
machining large number of
workpiece.or no tool wear occur.

19. DEMERITS
1. High initial cost of machine.
2. Design and tooling system is
complex .
3. High energy consumption.
4. Non conducting material can not be
machined.
5. Blind hole cannot be machined by
ecm.

20. Several industrial techniquesaredevelopedbasedonECM
1.Electro chemical cutting.
2.Electro chemical broaching.
3.Electro chemical drilling.
4.Electro chamical deburring.

21. RESULT
1. The process of electro chemical
machining material removed by
electrical and chemical energy from
the work piece.
PRECAUTIONS
1. During the process elecrolyte fluid
should be flow continuesly.
2. The workpiece holder ( fixture)
should be non- conducting material