The reasonable selection of cutting fluid can effectively reduce the friction in the cutting process, improve the heat dissipation conditions, reduce the cutting force, cutting temperature and tool wear, improve the tool durability and cutting efficiency, and ensure the quality of the machined surface. From the economic benefits of machining, it is of course required to improve the efficiency after using cutting fluid. In fact, many cutting fluids have played a role in improving economic benefits.

Generally speaking, low speed and heavy load cutting requires sufficient lubrication. Generally, extreme pressure cutting fluid is used for high speed shallow cutting, and cooling is the first. Generally, water-based cutting fluid is used. For general grinding, sometimes lubrication is harmful, so synthetic liquid or chemical solution can be used.

At the same time, the service life of cutting fluid products is also a factor to be considered. Generally, the selected water-soluble metal cutting fluid is required to have a relatively long service life to meet the requirements of the factory to reduce the comprehensive cost. Moreover, the longer service life of the cutting fluid not only reduces the use of water-soluble metal cutting fluid, but also reduces the number of fluid changes, machine tool downtime, and labor costs, It also reduces the number and cost of waste liquid treatment of water-soluble metal cutting fluid.

In addition, processing materials, processing materials and machine tool structure are also important basis for selecting oil-based cutting fluid or water-based cutting fluid. However, the selection of cutting fluid is also very important, as long as the appropriate cutting fluid is selected, it can play the above role. If the selection is improper, it may be counterproductive.

There are many kinds of cutting fluids sold on the market now, and their performances vary greatly, which brings inconvenience to our correct selection. When selecting cutting fluid, we should consider many aspects such as primary performance, secondary performance, service life, dilution ratio and production cost.