METAL WORKING FLUID COMPOSITION AND METHOD OF DETECTING FLUID DETERIORATION

Utility Patent Application (A1)

March 5, 2015

Source: USPTO via Sqoop

Applicants: ILLINOIS TOOL WORKS, INC.

Inventors: Emily J. Gibbons, Steven M. Badger, II, Leroy N. Hitchcock, Jacob F. Harkey

A wear-indicating metalworking fluid is provided that includes a lubricant base; and a wear-indicating agent. A method of determining wear in a metalworking fluid includes providing wear-indicating metalworking fluid that contains a lubricant base and a wear indicating agent; and observing the visual appearance of the metalworking fluid. A change in visual appearance of the metalworking fluid when compared to an unused metalworking fluid indicates wear of the metalworking fluid.