During CNC machining, a nozzle near the cutting area sprays out an oily liquid known as cutting fluid.

This cutting fluid is a lubricant used for lubrication, cooling, and cleaning in CNC machine tools. Therefore, cutting fluid is crucial in the automated machining of CNC machine tools.

Now let's explore cutting fluids, their types, and applications. This article will also discuss the techniques for selecting the right cutting fluid for manufacturing.

The role of cutting fluid in CNC machining process:

lubrication

Cutting fluid leaves an oil film on the surfaces of the workpiece and tool. This film can penetrate even the tiniest metal gaps and irregular areas, which helps reduce the amount of friction between metals. It can produce the following effects:

It reduces tool wear and extends its service life.

Cutting fluid can also reduce cutting resistance and decrease power consumption during machining.

Burrs on the edges should be avoided to enhance the precision of the machined surface.

cooling

The temperature of the cutting fluid can reach 600-1000 degrees Celsius, which can reduce the heat generated during the cutting process.

It is not easy to dissipate heat now, so the workpiece will become hot. This is especially true for workpieces composed of materials with low thermal conductivity, such as stainless steel.

Using cutting fluid as a means to reduce temperature may have the following impacts:

The thermal deformation experienced by the cutting tool is minimized, and its service life is extended.

To maintain the accuracy of the machining process, it is necessary to prevent thermal deformation of the workpiece and tool.

It can be processed at high speed.

clean

The chips generated during the cutting process can be washed away, and spraying cutting fluid on the workpiece can clean it. This may have the following effects:

It prevents chip adhesion and scratching of the workpiece by taking preventive measures.

Cutting fluid can also prevent defects caused by chip accumulation and blockage during the machining process.

Take preventive measures to avoid tool damage caused by chip entanglement.