What are the differences between these three types of cutting fluids: emulsifying, semi-synthetic and fully synthetic?
Water-based cutting fluids are divided into three categories, namely emulsions, synthetic cutting fluids and semi-synthetic cutting fluids. Synthetic cutting fluid.
① Emulsion: It is composed of emulsified oil and water. Emulsified oil is mainly composed of mineral oil (content 50% ~ 80%), emulsifier, anti-rust agent, oily It is composed of agents, extreme pressure agents and preservatives. The diluent is opaque and milky white. However, due to its poor working stability, short service life and opaque solution, it is difficult to observe the cutting conditions during operation, so the usage decreases year by year.
②Synthetic cutting fluid: Its concentrated liquid does not contain mineral oil and is composed of water-soluble rust inhibitors, oily agents, extreme pressure agents, surfactants and defoaming agents. The diluted liquid is transparent or translucent The main advantages are: long service life; excellent cooling and cleaning performance, suitable for high-speed cutting; the solution is transparent and has good visibility, especially suitable for use on modern processing equipment such as CNC machine tools and machining centers. However, synthetic cutting fluids are easy to clean The lubricating oil on the sliding parts of the machine tool will be removed, resulting in inflexible sliding and relatively poor lubrication performance.
③ Semi-synthetic cutting fluid: also called micro-emulsified cutting fluid. Its concentrate consists of a small amount of mineral oil (content (5% to 30%), composed of oily agent, extreme pressure agent, anti-rust agent, surfactant and preservative. The diameter of the oil droplets of the diluent is less than 1?m, and the diluent is transparent or translucent. It has The advantages of emulsions and synthetic cutting fluids make up for their shortcomings, which is the development trend of cutting fluids.