Many machining issues can be solved by simply adding coolant concentrate to your coolant sump. I do specify CONCENTRATE. In many machine shops, coolant lines are added for ease of coolant access and chemical cost savings. Check with your maintenence guy to find out the RI (refractive index) of the coolant in the make up tank <-- you may be suprised to find that the concentration is not what you think it is.
Typical coolant problems that may be solved by adding coolant.
-DULL FINISH ON PART
In alot of cases, machinists tend to change tool inserts, adjust the speed of the spindle, or even scrap the part completely. Before any of these problem solving solutions are tried, add about a half gallon of raw coolant to the sump, this may be a quick fix to a very easy problem!
-SKIN IRRITATION/COOLANT GOING RANCID/"MONDAY MORNING" SMELL
Before threatening to throw your coolant supplier out of the door because of the coolant going bad, ask him/her if they have a sump additive (biocide). In most cases, a small amount of additive can solve most of these type of annoying problem. (you may also try changing to a synthetic coolant. (0% oil)
There are several other problems that may have this simple fix, do some trial and error, the only thing you have to loose is a couple gallons of coolant!
-Coolantman
EnviroServe Chemicals, Inc. www.EnviroServeChemicals.com
(910) 892-1791