Precision coolant improves quality in steel turning

The objective of every manufacturing company is to satisfy its customers by delivering workpieces to the right quality, on time, and at optimal cost. Here, Staffan Lundström, Product Manager at Sandvik Coromant explains why cost-efficiency and quality in steel turning means precision — particularly in the choice of coolant.

By using tool holders with precision nozzles, coolant jets can be directed precisely towards the cutting zone on the rake side of the insert. This will act like a hydraulic wedge to lift the chip, which has two effects: it shortens the contact length between the insert and the material and helps to reduce cutting forces. The end result is a lower temperature with improved chip control.

Pre-directed precision over coolant can improve chip formation and increase the process window where no operator is needed.

Nevertheless, these benefits can only be achieved with tools developed for precision coolant applications. This is because the required coolant pressure to break the chip for turning tools depends on the nozzle delivery design, material being machined and the depth of cut and feed. The coolant flow required depends on the pressure and the total coolant delivery area