1: The grinding point temperature is very high, the role of grinding is to absorb the heat during grinding as soon as possible, so that the workpiece temperature drops, to prevent the deterioration of the processing surface state. The machining quality of the workpiece is affected. The cooling effect depends on the thermal conductivity, specific heat capacity, heat of vaporization, vaporization speed, liquid flow rate and velocity of grinding fluid.
2: The role of the grinding fluid is to maintain the normal grinding state as far as possible, reduce the wear and passivation of the abrasive particles, extend the durability of the grinding wheel, maintain the dimensional accuracy, and prevent the deterioration of the machined surface roughness. Therefore, the grinding fluid is required not only to have a cooling effect, but also lubrication, cleaning, rust prevention and other functions.
3: In the grinding process, due to the high temperature of the grinding area, the grinding fluid is partially boiled and vaporized at this time. The vaporization of grinding fluid absorbs a large amount of heat, which is called the heat of vaporization. Because the heat absorbed by vaporization is the largest, when using the grinding coolant, conditions (such as spray) should be created as far as possible to make it easy to vaporize.
