What is the difference between semi-synthetic cutting fluid and fully synthetic cutting fluid?

We understand that oil-based cutting fluids have good smoothness and poor cooling. Compared with oil-based cutting fluids, water-based cutting fluids have poor smoothness and better cooling. Synthetic cutting fluids. Slow cutting requires strong smoothness of the cutting fluid. Generally speaking, when the cutting speed is lower than/min, oil-based cutting fluids are used. Cutting oils containing extreme pressure additives are valid for any cutting data when the cutting speed does not exceed/min. During high-speed cutting, due to the large heating of the oil-based cutting fluid, the heat transfer effect is poor, the temperature of the cutting zone is too high, and the cutting oil catches fire due to thermal deformation, which affects the machining accuracy of the workpiece. Water-based cutting fluids are commonly used. Synthetic cutting fluid.

 Water-based cutting fluids should generally be used under the following conditions: oil-based cutting fluids have fire hazards in the center; high-speed cutting, large feed makes the cutting area prone to high temperature, thick smoke, and fire risks; considering the activity of the front and rear processes, it is required to use water-based cutting fluids; synthetic cutting fluids. Hope to reduce the splash and oil mist pollution caused by the diffusion of oil around the machine tool, and insist on a clean operating environment; considering the price, water-based cutting is generally used for some easy-to-process materials and lower requirements for the appearance quality of the workpiece. The cutting fluid has met the application requirements, which can greatly reduce the cost of the cutting fluid.

When the durability of the tool accounts for a large proportion of the cutting economy (such as expensive tools, difficult sharpening, long loading and unloading time, etc.); the machine tool has high precision and does not allow water to enter (to prevent corrosion); the machine tool smooth system and cooling system are easy to hook up, no waste liquid disposal equipment and conditions, oil-based cutting fluids should be considered. First of all, water-based cutting fluids include fully synthetic cutting fluids, semi-synthetic cutting fluids and emulsions. Fully synthetic cutting fluids mean that the ingredients do not contain mineral oil, and semi-synthetic, also known as microemulsion cutting fluids, contain a small amount of mineral oil (5-30%). This is the development trend of cutting fluids.