SOME REGULARITIES OF THE HEAT TRANSFER
IN THE PROCESS OF COOLING OF A CUTTING
ZONE BY AN EMULSION FOG

E. É. Fel'dshtein and R. Maruda

UDC 621.9

The dependence of the average diameter of the drops of 
an emulsion and their number in a unit volume on the conditions of 
emulsion-fog generation has been investigated. An individual drop 
is heated, when it comes into contact with a heated surface, to the 
boiling and evaporation temperatures. Under certain conditions, the 
total time of heating and evaporation of all drops making contact 
with a surface for 1 sec can be smaller than this time. In this case, 
active substances entering into the composition of the emulsion form 
a solid lubrication film on the surfaces of a piece, a chip, and a 
cutting tool. More than 50% of the total heat released can be removed 
due to the boiling and evaporation of emulsion drops from the cutting 
zone.

Zielona Gora University, 50 Podgorna Str., Zielona Gora, 6S-246, Poland; 
email: e.feldsztein@ibem.uz.zgora.pl. Translated from Inzhenerno-Fizicheskii 
Zhurnal, Vol. 79, No. 3, pp. 179-182, May-June, 2006. Original article submitted 
December 21, 2004; revision submitted May 4, 2005.