The effects of the flow rate and speed of lubricoolant jets on heat transfer in the contact zone when grinding a nitrided steel

The “burn out” phenomenon is also studied and the temperature at which it occurs is compared to the auto-ignition point of the cutting fluid. When burn occurs, the fluid no longer lubricates or cools the contact area. It allows an increase in the temperature in the grinding zone which may damage the microstructure of the workpiece, and produce distortions and cracks.