Advanced Drilling

Concept of MQL-machining

A machining method called MQL (Minimum Quantity Lubrication) machining or semi-dry machining can be put to practical uses to improve environmental conditions and reduce manufacturing costs.


By supplying the minimum required quantity of coolant to the cutting edge in the form of a mist, tool life can be increased when machining steels. MQL only offers lubrication and it has little or no effect in terms of cooling the cutting edge. Additionally the MQL method has the same chip disposal properties as air-blow. When MQL machining, it is necessary to select cutting conditions under which heat is not likely to be generated. It is also advisable to reduce the contact area and time between the cutting edge and the workpiece.