Electrostatic cooling is a potential environmentally friendly alternative to cutting fluids in machining processes. It works by ionizing an airflow or fine droplets of lubricant through electrostatic charging. Studies have shown it can improve tool life, reduce cutting forces, and improve surface finish and geometry accuracy compared to dry or conventional wet machining. While promising, more research is still needed on its potentials and applications for different materials and processes. In summary, electrostatic cooling is a green machining technique that shows improvements over traditional cooling methods.

1. 1
Electrostatic Cooling System as
Environmentally Conscious
Cooling Technique:
A Review on Its Potentials for
Machining Processes
by
Ahmad Zubair Sultan
Safian Sharif & Denni Kurniawan

2. 2
Abstract
The use of excessive cutting fluids in
machining has significantly improved
the productivity and quality of
machined parts. However, its negative
effects on the manufacturing cost,
health, and environment raise the need
for alternative cooling technique.

3. 3
Abstract
Electrostatic cooling technique, in
which ionized airflow or very fine
droplets of lubricant or coolant are
generated through electrostatic
charging, has positive notion on the
environment, health, and safety.

4. 4
OBJECTIVES
• Sustainable Manufacturing
• Current Issues on Sustainable Manufacturing
• Green Cooling Strategies
• Electrostatic Cooling Technique
• Review on Potentials of ESC for Machining
Processes

5. 5
Sustainable Manufacturing
• Developing technologies to transform materials
without emission of greenhouse gases, use of
non-renewable or toxic materials or generation
of waste (Allwood 2005)

6. 6
5 options for sustainable manufacturing
Use less material
& Energy
Substitute input
materials:
non-toxic & renewable
Reduce unwanted outputs:
Cleaner production,
Industrial symbiosis
Convert outputs to inputs:
recycling and
all its variants
Sustainable
Manufacturing
Changed structures of
ownership and production:
product service systems, supply
chain structure

7. 7
Green Cooling Strategies
• Dry machining
• Cryogenic Machining
• Water Vapor cooling System
• Gas Cooling system
• MQL / NDM / Micro Lubricant
• Electrostatic Cooling Technique

8. 8
Principle of ESC Technique
• The solution or liquid is transformed into
droplets in the electro spray. It is passed through
a nozzle and is then electrically charged to a
very high voltage. The charged liquid in the
nozzle becomes unstable as it is forced to hold
more charges. As the liquid reaches a critical
point, at which it can no longer hold electrical
charge, it blows apart into a cloud of tiny,
highly charged droplets from the tip of the
corona discharged nozzle

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Fig.1 Schematic view of corona discharge nozzle
from electrostatic cooling system (Liu, et al., 2011;
Reddy & Yang, 2009)
ESC Technique

10. 10
ESC Technique

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Potentials of ESC
• Effect ESC on cutting forces
• Effect ESC on tool wear
• Effect ESC on geometrical accuracy
• Effect ESC on surface finish

12. 12
Effect ESC on cutting forces
• In turning titanium alloy TC11 (Gao et al. 2012)

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Effect ESC on cutting forces
• In turning tool steel GCr15 (Liu, et al., (2011)

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Effect ESC on tool wear
• In turning of tool steel (Liu, et al., 2011)

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Effect ESC on tool wear
• In Drilling AISI 4340 (Reddy, et al., 2010)

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Effect ESC on tool wear
• In turning Ti6Al4V (Wang et al., 2010)

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Concluding Remarks
• In terms of tool life, cutting force, geometrical
accuracy, and surface roughness, this
environmentally conscious cooling technique
outperforms dry and conventional wet cooling
techniques.
• Therefore, according to the experiments results,
ESC technique could be a potential solution in
green cutting considering preventing the
pollution of the environment instead of cutting
fluids.

18. 18
Acknowledgements
The authors wish to thank

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End of Presentation
Thank You