-: Cutting Fluids :-
The fluids which are applied to a tool during a cutting operation for removal of chips and to reduce the heat generation is known as cutting fluids . It is also called lubricant or coolants .
It is very effective for improving the overall machinability and also prevent the formation of BUE ( Built Up Edge ).
-: Properties of Cutting Fluids :-
The properties of cutting fluids are given as -
1- Have a large specific heat and thermal conductivity .
2- Have a low viscosity and small molecular size .
3- Contain suitable reactive constituent.
4- Non-Poisonous and non-corrosive .
5- Inexpensive and easily available .
-: Types of Cutting fluids :-
There are following four types of cutting fluids, which are given as -
(i)- Aqueous Fluids
(ii)- Oil- type Fluids
(iii)- Synthetic Fluids
(iv)- Gaseous Fluids
(i)- Aqueous Fluids :- These are mainly emulsion or soluble oils .These are generally cheapest and have maximum use where coolant properties are important factor i.e. conventional cutting of metals .
(ii)- Oil-Type Fluids :- These fluids are referred to petroleum products which are usually known as sharp cutting oils or mineral oil . They are used where reduction of friction is important factor i.e. heavy duty cuttings .
(iii)- Synthetic Fluids :- These fluids are transparent in nature which allows operator to observe the cutting clearly and mainly used on grinding machining . It is used mainly in diluted form .
(iv)- Gaseous Fluids :- These fields are mainly CO2 , compressed air , argon, helium , nitrogen etc and have limited application due to high cost , but these are used where liquids are avoided i.e. cutting an absorbent material .
-: Purpose of Cutting Fluids :-
There are following purposes of cutting fluids -
1- Cooling down of the chip -tool work zone by carrying away some of the generated heat .
2- Reducing the coefficient of friction at the chip tool interface due to the formation of a weaker compound at the interface .
3- Reduce the thermal distortion caused by temperature gradients generated during machining .
4- Wash away the chips and clearing the machining zone .
5- Protecting the finished surface from corrosion .
The fluids which are applied to a tool during a cutting operation for removal of chips and to reduce the heat generation is known as cutting fluids . It is also called lubricant or coolants .
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| Cutting Fluids , Properties of cutting fluids , Types of Cutting Fluids , Purpose of cutting fluids |
It is very effective for improving the overall machinability and also prevent the formation of BUE ( Built Up Edge ).
-: Properties of Cutting Fluids :-
The properties of cutting fluids are given as -
1- Have a large specific heat and thermal conductivity .
2- Have a low viscosity and small molecular size .
3- Contain suitable reactive constituent.
4- Non-Poisonous and non-corrosive .
5- Inexpensive and easily available .
-: Types of Cutting fluids :-
There are following four types of cutting fluids, which are given as -
(i)- Aqueous Fluids
(ii)- Oil- type Fluids
(iii)- Synthetic Fluids
(iv)- Gaseous Fluids
(i)- Aqueous Fluids :- These are mainly emulsion or soluble oils .These are generally cheapest and have maximum use where coolant properties are important factor i.e. conventional cutting of metals .
(ii)- Oil-Type Fluids :- These fluids are referred to petroleum products which are usually known as sharp cutting oils or mineral oil . They are used where reduction of friction is important factor i.e. heavy duty cuttings .
(iii)- Synthetic Fluids :- These fluids are transparent in nature which allows operator to observe the cutting clearly and mainly used on grinding machining . It is used mainly in diluted form .
(iv)- Gaseous Fluids :- These fields are mainly CO2 , compressed air , argon, helium , nitrogen etc and have limited application due to high cost , but these are used where liquids are avoided i.e. cutting an absorbent material .
-: Purpose of Cutting Fluids :-
There are following purposes of cutting fluids -
1- Cooling down of the chip -tool work zone by carrying away some of the generated heat .
2- Reducing the coefficient of friction at the chip tool interface due to the formation of a weaker compound at the interface .
3- Reduce the thermal distortion caused by temperature gradients generated during machining .
4- Wash away the chips and clearing the machining zone .
5- Protecting the finished surface from corrosion .
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