1. cutting
fluids
A K A M J A M A L
K O D A S H T A M I R
S A R A A N W A R
H O Z A N M A S U D

2. Cutting fluids
Cutting fluid also name as Coolant or lubricant is used for improving the cutting
condition and also the tool life. It can be in liquid as well as gaseous form

3. Purpose of cutting fluid
The cutting fluid or coolant used for various purposes, some of these are listed
below

4. 1-Used to cool the tool
With the help of cutting fluid, we can decrease the friction between the tool and
the workpiece as also we can minimize the heat during the cutting operation. By
doing this we see an increase in tool life, we get a good surface finish and also we
can prevent the metallurgical damage.

5. 2-Used for labrication
As I already said it is used for lubricating purposes, the help cutting fluid chips can
easily be removed from the workpiece

6. 3-Used to decrease friction
Collant is used to decrease friction by doing this we can restrict the heat
generation hence less power is consumed that increases the tool life

7. 4-Restrict Thermal Distortion
By using cutting fluid we can restrict the change of properties of the material
because of heat.

8. 4-Used as Cleaner
Coolant or cutting fluid is used as a washing agent with the help of cutting fluid we
can clear the operation area if there is dust inside the cutting area that results in
uneven cutting that’s why we need to clean the cutting area

9. 6-Some Other Benefits of Using Cutting
Fluid
•It is used to get a good surface finish
•It reduces the tool wear

10. Properties of Cutting Fluid
To perform the above-mentioned things a cutting fluid have some particular
properties, those properties are
•A cutting fluid should have a low viscosity so that it can easily flow above the
workpiece
•It should have a high flash point so that it can be used at high temperatures
•It should stable at high temperatures
•It should have a non-foaming tendency

11. Types of Cutting Fluid
We can categorize a cutting fluid into 4 types and those are
•Soluble Oil
•Cutting oil
•Synthetic Coolants
•Solid Lubricants

12. 1-Soluble Oil
•Soluble oil is a mixture of water, mineral oil and coupling agents. Generally, we use
soap as a coupling agent.
•Insoluble oil, an emulsion of mineral oil in water is used at the ratio of 1:10 to
1:100 depending on the operation we are performing.

13. 2-Cutting Oil
It is a mixture of mineral oil and fatty oil. It is mainly used in hand cutting
machinery. It can be used as a coolant as well as a lubricant for Low cutting and
high cutting rates respectively

14. 3-Synthetic Coolant
As the name suggests synthetic that means it contains zero mineral oil, it has a
higher cooling rate. Generally, this type of coolant is used in grinding operation

15. 4-Solid Lubricant
Solid lubricant means it is in the solid phase, soap bar, molybdenum disulfide,
graphite, the wax stick can be used as solid lubricants

16. Why we use Cutting Fluid?
We use cutting fluids to minimize the heat generation rate and also for lubrication
purposes

17. Thanks for your attention
Any question?