What is the main advantage of using coolant during machining?

Using coolant during machining primarily serves to lower the temperature and friction during cutting. This is critical because high temperatures can negatively impact both the material properties of the workpiece and the cutting tool itself. When cutting metals, the friction generated during the process can cause excessive heat, which can lead to tool wear, thermal deformation of the workpiece, and even damage to the cutting tool if temperatures exceed certain limits.

Coolant helps to dissipate this heat by providing a cooling effect. It absorbs the heat generated during the cutting process and carries it away from the cutting zone. This helps maintain a lower operational temperature, which enhances the performance of the cutting tool, reduces thermal expansion, and improves the stability of the machining process.

In addition to temperature control, reducing friction is also crucial for efficient machining. Lower friction means that the cutting edges can work more effectively without unnecessary resistance, which can lead to better tool life and more efficient material removal. Therefore, the main advantage of using coolant is its ability to lower temperature and friction during the machining process, which impacts overall productivity and tool longevity.