Coolant

Coolants dissipate process heat, reduce friction and stabilise dimensional accuracy, e.g. in machining, forming or grinding. Water-miscible emulsions, solutions, synthetic fluids or oil-based cooling lubricants are used. Important parameters are thermal conductivity, viscosity, pH value, corrosion protection, foam stability and biological stability. During operation, chips, abrasion, salts and germs alter the properties.

Effective measures include concentration control (refractometer), filtration/separation, air and oil separation, disinfection and regular replacement of the agents used. Cleanly managed coolants reduce tool wear, burr formation and energy consumption. Environmental and occupational safety concerns relate to aerosols, skin contact and disposal. Suitable additives, enclosures and extraction systems ensure productivity and compliance.