What is a coolant mist in CNC milling?

In CNC milling, a coolant mist refers specifically to a fine spray of coolant that is applied to the cutting area during machining. This mist serves a dual purpose: it cools the cutting tool and workpiece, which helps to prevent overheating, and it also lubricates the cutting surfaces to reduce friction and wear. The use of a coolant mist can improve the overall performance of the milling operation by enhancing tool life and ensuring better surface finishes on the machined parts.

This technique is especially beneficial when machining materials that generate a lot of heat or when using high-speed cutting conditions. The application of a mist allows for effective cooling and lubrication without overwhelming the work area with a large volume of liquid, which can lead to waste and potential safety hazards. The precision and efficiency of using a mist system make it a popular choice in modern CNC milling practices.