Metalworking coolant emulsions

GEA separators can be directly integrated in production to ensure smooth processing by means of early partial stream purification. The result is a four- to fivefold increase in the life of the coolants along with lower disposal costs and optimum hygiene.

In metal-processing, so-called coolant emulsions are used to reduce the frictional and forming energy, to dissipate heat, and to flush away the metal shavings during machining and forming operations. To be able to fulfill these diverse duties as an “anti-metal corrosive agent”, the emulsions are composed of different components such as emulsifiers, stabilizers, corrosion protection additives, high-pressure additives and mineral oil components – a complex mixture that tends to bacterial contamination and decay. Entrained impurities such as metal shavings and tramp fluids speed up the aging process.

The consequence: degradation of the emulsifiers, acid formation and discoloration. Unpleasant odors are produced and the operators may suffer from skin irritations. The entrained solids and tramp oil must therefore be removed from the emulsions as quickly as possible.