Minimal Quantity Lubrication , also known as Minimal Quantity Lubrication (MQL), is a lubrication method for metal processing, that is, semi-dry cutting, which refers to combining compressed gas (air, nitrogen, carbon dioxide, etc.) with extremely small amounts of lubrication After the oil is mixed and vaporized, micron-sized droplets are formed and sprayed into the processing area for effective lubrication. The dosage of cutting fluid is generally only 0.03 ~ 0.4L/h (the dosage of traditional wet cutting is 20 ~ 100L/min), which can effectively reduce the friction between the tool and the workpiece, the tool and the chips, prevent adhesion, and extend the tool life. life and improve the quality of the machined surface.

The so-called low-temperature CA-MQL refers to mixing cold air below 0 degrees with oil and then spraying it out. The cold air can cool down more effectively, and the oil mist increases the lubrication effect, thereby achieving the purpose of cooling, cooling and lubrication, which can effectively reduce the cost of machining tools. temperature, and produce lubrication effect, improve the service life of the tool, increase the surface quality of the workpiece, and dry cutting can be truly realized.