Cutting fluids used in machining titanium alloys require special consideration because chlorine ions have, under certain circumstances, caused stress-corrosion cracking.

When specifying cutting fluids for machining titanium, some companies have practically no restrictions except that they do not use cutting fluids containing chlorine on parts which are subjected to higher temperatures in welding processes or in service. Most organizations in aerospace manufacturing permit no active chlorine in any cutting fluid used for machining titanium alloys.

A program to define the effect of experimental chlorinated and sulfurized cutting fluids on the mechanical properties of the Ti-6AL-4V alloy (annealed, 34 Rc) was performed. Mechanical property evaluations included:

-High-cycle fatigue at both room and elevated temperatures
-Fatigue crack propagation at two cyclic frequencies
-Fracture toughness
-Stress-corrosion/surface-embrittlement exposures

In alot of cases, chlorine helps with lubrication, tool life, cooling, and bacteria control. This raw material can be easily substituted by your chemical supplier.
There are excellent cutting fluids available which do not contain any chlorinated compounds.


-Coolantman

EnviroServe Chemicals, Inc.
www.EnviroServeChemicals.com
(910) 892-1791