Jäähdytysöljy

Jäähdytysöljy, known in English as cutting fluid or coolant, is a liquid used during machining and metalworking operations. Its primary functions are to cool the workpiece and the cutting tool, lubricate the cutting zone, and flush away chips and debris. By reducing friction and heat, jäähdytysöljy extends the life of tools and improves the surface finish of the machined part. It also helps to prevent thermal expansion of the workpiece, which can lead to dimensional inaccuracies.

There are several types of jäähdytysöljy, broadly categorized as oil-based, water-based, and synthetic. Oil-based coolants offer excellent lubrication but can be more difficult to clean and may pose fire hazards. Water-based coolants, such as emulsions and solutions, provide superior cooling and chip flushing but may offer less lubrication and can be prone to bacterial growth. Synthetic coolants are man-made and combine the benefits of both oil and water-based types, often offering good cooling, lubrication, and corrosion protection with minimal environmental impact. The choice of jäähdytysöljy depends on the specific machining operation, the materials being worked, and the desired outcome. Proper maintenance, including filtration and monitoring of concentration and pH levels, is essential for optimal performance and longevity of the jäähdytysöljy.