5. Conclusion

When it comes to improving part quality and/or boosting productivity, machining assistants can be a relevant solution. The principle is to bring additional energy to the machining process in thermal and/or mechanical form. Cryogenic assistance is a cutting assistance which induces cooling of the cutting zone thanks to the action of a cryogenic fluid; the effect is therefore purely thermal.

Depending on the type of machining to be carried out, different cooling techniques can be considered. Nevertheless, and particularly for materials with limited machinability, because they generate very high cutting temperatures, external cooling of the tool tip by cryogenic assistance is the most effective. In this configuration, tool life is significantly increased. Cutting force and chip morphology are minimally affected. The surface integrity of the machined product (quantified...