Cryogenic machining, also for soft(er) materials

Cryogenic cooling during machining stands for machining at very low temperatures. This has advantages both for tools made of heat-resistant materials, where the heat can be high during machining, and for the machining of softer materials, which will flow more easily during machining.

Compressed gas is used for cryogenic cooling during machining. This pressure (drop) causes a strong cooling of the gas. The temperature of a gas such as CO2 drops to -78°C during expansion, while the temperature will be another 100°C lower for nitrogen. So, the cooling capacity is huge.