Abstract
The following article has a direct bearing on the lubricating action of cutting fluids. A method has been developed for indicating the penetrating ability of chemical (synthetic) cutting fluids and the screening properties of electrically conducting lubricating films. It consists of measuring the electromotive force of a frictional system during the metal-cutting process. An experimental study has been made of the effect of surface-active substances on the wetting ability and lubricating properties of aqueous solutions of electrolytes. Results are given showing the film continuity and durability when recording the potential difference between a tool and a chip of the workpiece.
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