The Study On Preparation Of Semi-Synthetic Cutting Fluid

As the semi-synthetic cutting fluids has good performance in cleaning and cooling, it is becoming widely used in metal processing, and will gradually replace oil-based cutting fluids. In particular, the superiority of water-based semi-synthetic cutting fluids is more prominent, compared with the traditional mineral oil emulsion and oil-based cutting fluid, water-based semi-synthetic cutting fluids is completely free of mechanical oil. It s performance of cleaning, rust resistance, cooling, processing visibility, anti-bacterial, biodegra-dable and stability have significant features. In the near future, it will have a wide rang of applications at home and abroad.This semi-synthetic cutting fluids is composed of mineral oil、extreme pressure, lubricant, oil agent, emulsifier、cleaner, anti-rust and water. Performance of it is carried out in this experiment. Mixture was heated with stirring to form a stable colloidal system and its performance was studied. By lubricating performance the mass fraction of 0.5% of the semi-synthetic cutting fluids is tested to determine the best response ratio:mineral oil: extreme pressure lubricant:oil agent:emulsifier:cleaner:anti-rust:water= 13:26:2.5:6.5:5:20.Testing standards of technical quality indicators according to JB/T 7453-94 is evaluated on appearance, storage stability, pH, surface tension, hot and humid and corrosive, neutral salt spray test, rust, lubricity of self-made cutting fluids. We find that the appearance of it is no precipitation and no stratification. it is uniform、transparent and have good storage stability. Its pH is about 9.5. The surface tension of it is approximately 27.22mN/m. corrosion experiments A and rust experiment A. The friction coefficient of it is 0.0491, meeting the re-quirements of the JB/T 7453-94 and the actual application requirements.The preparation technology has the advantages of low cost, product performance is good, has a good application prospect.