General physical and chemical properties of the lubricant oil carbon residue required under the experimental conditions, the heat of evaporation and the formation of coke black residue after burning called carbon residue. Carbon residue is an important quality indicators lube base oil is refined project to determine the nature and depth of lubricants and regulations. Lube base oil, how much carbon residue, not only about its chemical composition, but also with the depth of oil refining related to the formation of carbon residue oil in the main substances are: oil resin and asphaltene and polycyclic aromatic hydrocarbons . These substances under conditions of insufficient air, by the strong thermal decomposition, formation of condensation of carbon residue. The deeper the depth of oil refining synthetic water-soluble metalworking fluid Castrol most, the smaller the carbon residue. Generally speaking latest Castrol water-soluble metalworking fluids, carbon residue blank base oil as possible. Now Castrol fully synthetic water-soluble metalworking fluids, many oils contain additives, metals, sulfur, phosphorus, nitrogen, and carbon residue of their high value, and therefore carbon residue oils with additives has lost Determination of carbon residue of the original meaning. Mechanical impurities, moisture, ash and carbon residue oil purity are reflected in the quality indicators, reflecting the degree of lubricating base oil refining. Aqueous solutions, emulsions and cutting oils are most commonly used of the three classes a cutting fluid, aqueous categories: aqueous solution as a main component is a cutting fluid. Thermal conductivity of water and the cooling effect is good, but the water is easy to make a simple metal rust, poor lubricating properties. Therefore, often adding a certain amount of additives in aqueous solution, such as anti-corrosion additives, oil additives, surfactants and water-soluble metalworking fluid, making it both a good rust resistance, but also has some lubrication properties. In the preparation of an aqueous solution, paying particular attention to water quality, if it is hard water must be softened. 2, the emulsion categories: emulsified oil emulsion is diluted with 95% to 98% of the water is made of translucent or milky white liquid is, with good cooling effect. However, lubrication, corrosion performance is poor. Usually a certain amount of oil added, extreme pressure additives and anti-rust additives, extreme pressure formulated as an emulsion or emulsion rust. 3, cutting oils: cutting oil is the main ingredient of mineral oil, animal oil or compound using a small number of oil. Pure mineral oil can not form a solid lubricating action in the friction interface and rust. Water-soluble metalworking fluids, Miles lubricants, Castrol most synthetic water-soluble metalworking fluid supplied by Miles lubricants. Around Lubricant Co., Ltd. of Shenzhen City (www.sz-run.com) in industrial lubricants, greases and other industrial machinery industry has high visibility, integrity management, both quality of service, welcome to inquire, or consult our " Commercial Union customer service "it!