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

  2024 / 11 / 15

  Fully synthetic cutting fluid is a water-soluble cutting fluid that uses only chemical synthetic base oil (i.e. does not contain mineral oil). Water has good heat transfer and cooling effects, but pure water can easily cause metals to rust and has poor lubrication properties. Therefore, sufficient additives are always added to the aqueous solution, such as rust-proof additives, surfactants, and oily additives, so that it has both excellent rust-proof properties and certain lubrication properties. When preparing the aqueous solution, pay attention to the water quality. If it is hard water, soften it. Semi-synthetic cutting fluid refers to a water-soluble cutting fluid containing both mineral oil and chemical synthetic base oil. It is also called micro-emulsified cutting fluid. Its concentrate consists of a small amount of mineral oil (content is 5%-30%), oiliness agent, extreme pressure agent, rust inhibitor, surfactant and preservative. The diameter of the diluent oil droplet is less than 1μm, and the diluent is transparent or translucent. It has good cooling, lubrication and rust prevention properties. It has the advantages of emulsion and synthetic cutting fluid, and makes up for each other's shortcomings. It is the trend of cutting fluid development. Comparing semi-synthetic cutting fluid and fully synthetic cutting fluid, they have the following differences between them: 1. Semi-synthetic cutting fluid has relatively poor lubrication performance and poor processing results. Fully synthetic cutting fluid does not contain mineral oil substances and has many advantages such as long service life, cooling, cleanability, stability, etc. Semi-synthetic cutting fluid, because oil-soluble lubricating additives are difficult to add, results in weak lubricity and is not practical for production and processing. Not very effective.

• Classification and application of metalworking fluids

  2024 / 11 / 08

  The basic components of metalworking fluids are summarized as consisting of base materials and various additives. Base materials refer to the main components or carriers of metalworking fluids, which are used to dissolve and mix various functional additives. Commonly used base materials include water, base oil, animal and vegetable oils, alcohol and chemical solvents. Functional additives include oiliness agents, extreme pressure agents (or EP agents), rust inhibitors, viscosity index improvers, emulsifiers, antioxidants, pour point depressants, antifoaming agents, smoke suppressants, preservatives and bactericides, etc.   Metalworking fluids are divided into two categories: cutting fluids and forming lubricants. According to the type of machine tool and the method of material removal, they can be divided into cutting fluids, grinding fluids, electroprocessing fluids and forming lubricants. Cutting fluid is a lubricating and cooling medium used to lubricate and cool workpieces and tools or abrasives during cutting. Reasonable selection of cutting fluid can effectively reduce friction during cutting, improve heat dissipation conditions, reduce cutting force and cutting temperature, improve cutting efficiency and tool durability, and ensure the surface quality of the workpiece. Synthetic cutting fluid is composed of various water-soluble additives and water, and does not contain mineral oil. Its concentrate can be liquid, paste and solid powder, etc. When used, it is diluted with a certain proportion of water to form a transparent or translucent diluent, which has a long service life, excellent cooling and cleaning performance, and good anti-rust performance. It is suitable for grinding and cutting of steel, copper, aluminum and their alloys, and is also suitable for high-speed cutting. Since the synthetic fluid is transparent and has good visibility, it is particularly suitable for use in CNC mac

• What are the types and functions of lubricant additives?

  2024 / 11 / 05

  Lubricant additives are added to improve lubricant performance, protect mechanical equipment and improve work efficiency. Common lubricant additives include antioxidants, anti-wear agents, extreme pressure agents, improvers, viscosity index improvers, degassing and anti-foaming agents, etc.   1. Antioxidants: Antioxidants are additives that prevent lubricants from oxidation and aging. It can effectively extend the service life of lubricants, stabilize lubricant performance, and avoid lubricant acidification, deterioration and other problems.   2. Antiwear agents: Antiwear agents can reduce friction, wear and contact between abrasive particles in mechanical equipment, and reduce wear of mechanical parts. Common antiwear agents include sulfides, phosphides, etc. 3. Extreme pressure agent: Extreme pressure agent is an additive to reduce metal friction and is widely used in lubricating oils under high temperature, high pressure and heavy load conditions. It can form a protective film to effectively reduce the contact and wear of metal surfaces.   4. Improver: Improvers are mainly used to improve the fluidity and cleaning performance of lubricating oils. For example, dispersants can prevent precipitation and reduce the formation of sediments; detergents can remove dirt and sediments inside mechanical equipment.   5. Viscosity index improver: The viscosity index of lubricating oil refers to the ability of lubricating oil to change viscosity at different temperatures. Viscosity index improvers can keep lubricating oil at a relatively stable viscosity at different temperatures and improve lubrication performance.   6. Degassing