The role and common types of stainless steel cutting fluid

Because the cutting performance of stainless steel itself is poor, it is more dependent on the cutting fluid to provide cooling, lubrication and cleaning characteristics, and the quality requirements for the cutting fluid are relatively high.

In fact, reasonable selection of cutting fluid can effectively reduce the interface friction during stainless steel machining and cutting, the bonding between tool and chip, the high temperature generated by cooling and cutting, reduce the degree of thermal deformation of stainless steel materials and prolong the service life of the tool, effectively ensuring the Improve the quality and efficiency of stainless steel processing. Generally speaking, using the correct cutting fluid can increase the cutting speed by about 30%, reduce the cutting temperature by about 100-150°C, and extend the tool life by about 5 times.

The realization principle of lubricating fluid is to penetrate into the tool, chip and processing surface to form a very thin lubricating film or chemical adsorption film, so as to achieve the purpose of lubrication. The quality of this lubricating effect mainly depends on the penetration and adsorption of cutting fluid. The performance of the film and the strength of the lubricating film. Adding additives of different components and proportions to the lubricating fluid can also improve the lubricating effect. However, it should be noted that the lubrication effect of cutting fluid is related to cutting conditions. For example, the faster the cutting speed, the thicker the cutting thickness, and the higher the strength of the processed material, the effect of cutting fluid will be weakened accordingly.
There are four main types of cutting fluids currently on the market.
One is vulcanized oil, which is a cutting fluid that uses sulfur as an extreme pressure additive. During the cutting process, high-melting-point sulfides will be produced on the surface of stainless steel materials, and they are not easily damaged at high temperatures. They have a good lubricating effect and a good cooling effect. They are suitable for ordinary turning, drilling, and reaming. with tapping. Vulcanized soybean oil is suitable for drilling, reaming, reaming and other processes.
Another kind is mineral oil such as machine oil and spindle oil. This kind of lubricating fluid has good lubricating performance, but its cooling and permeability are weak, so it is suitable for use in outer circle finishing turning.
The third is vegetable oil, such as vegetable oil and soybean oil, which have relatively good lubricating properties and are suitable for threading, reaming, tapping and other processes.
The fourth type is emulsion, which has the advantages of good cooling and cleaning performance, and good lubricating effect, and can be used in stainless steel roughing.
In the process of cutting stainless steel, the cutting fluid nozzle should be aimed at the cutting area, or it is better to use high-pressure cooling, spray cooling and other cooling methods.