Abstract:
Minimum quantity lubncation refers to the use of cutting fluids of only a
minute amount-tYPically of a flow rate of 50 to 500 ml/hour-which is about
three to four orders of magnitude lower than the amount commonly used III
flood Gaoling condition, where, for example, up 10 10 liters of flUid can be
dispensed per minute. The corlcept of minimum quantity lubrication,
sometimes referred to as near dry lubrication or micro lubrication, has
,
been suggested since a decade ago as a means of addressing the Issues of
elwirollmelltal intrUSiveness and occupational hazards associated With the
airborne culling fluid particles on factory shop floors. The minimization of
cutting flUid also leads to economical benefits by way of saving lubricant
costs and workpiece/tool/machine cleaning cycle time.
Compared to the dry and wet machining, MOL machining performed many
superiors mainly due to substantial reduction in culling zone temperature
enabling favorable chip formation and chip-tool interaction, It also provides
substantial reduction in tool wear, which enhanced the tool life, dimensional
accuracy. Furthermore, it prOVides environment friendliness (maintaining
neat, clean and dry working area, avoiding inconvenience and health hazards
due to heat, smoke, fumes, gases etc. and preventing pollution of the
surroundings) and Improves the machinability characteristics.
