b'METALWORKING FLUIDSPrabKeeping coolant clean through automated coolant recycling systems has been shown to extend tool life by up to 25% or more.Back-end fluid filtration and recycling systemsFurther, as coolant breaks down, it extend tool life and lower coolant costs. damages not only machine tools but pumps, sumps and even electronic components. Machine parts and in-By Mike Hook Although purchasing high-qual- teriors become vulnerable to rust ity cutting tools is an important firstand corrosion, equipment surfaces M etalworking operations look- step to maximize tool life, its notsuffer from abrasion, and tramp oil ing to strengthen their bot- the only consideration. Coolant pu- mist causes mechanical failures and tom lines may want to explore waysrity also plays a major role in over- prematurely clogs air filters.to get the most service out of cut- all tool life.ting tools. By preventing tools from exceed- Automated Coolant RecyclingHow effectively a parts manufac- ing critical temperature ranges dur- Continuously monitoring coolant turer manages cutting tools can im- ing machining, coolant performs ato ensure that it meets the manu-pact profit margins, especially dur- pivotal function. However, cuttingfacturers recommended concen-ing times of challenging marketfluids are subject to deteriorationtration level is the most important conditions, such as when materialover time as they become contam- parameter for extending tool and costs are high, interest rates are ris- inated with tramp oils, metal finescoolant life. However, testing cool-ing or theres a recession. Compa- and bacteria. If coolant deterio- ant, adjusting coolant concentra-nies that maximize tool life positionrates to the point where its lubricitytion levels and treating contam-themselves for more profitable op- becomes ineffective, tools dull pre- inated coolant with biocides re-erations over the long run. One keymaturely, break frequently and failquires time and attention that could to tool longevity is maintaining bestto meet part tolerances for surfacebe allocated to activities that add practices for coolant management. finish and size. value to parts.ctemag.com/cteguide.com27Prab.indd 27 2/14/20 3:03 PM'