Environment-friendly metal cutting fluid and preparation method thereof

Abstract

The invention discloses an environment-friendly metal cutting fluid. Water is taken as a solvent. The environment-friendly metal cutting fluid comprises the following components in parts by weight: 10to 15 parts of hydrotalcite, 5 to 10 parts of silicon nitride, 10 to 30 parts of plant oil and / or modified plant oil, 5 to 7 parts of lauryl sodium sulfate, 3 to 5 parts of boric acid and 2 to 5 parts of sodium silicate. The invention also provides a preparation method of the environment-friendly metal cutting fluid. The metal cutting fluid provided by the invention has extremely excellent lubricating property and extreme pressure resistance, does not contain any toxic substance, cannot cause pollution to the environment, and has wide application prospects.

Description

technical field [0001] The invention relates to a cutting fluid, in particular to an environment-friendly metal cutting fluid and a preparation method thereof. Background technique [0002] Metal cutting fluid refers to the lubricant used in the cutting process of metals and their alloys. Cutting fluid is widely used in modern metal cutting and has become an indispensable auxiliary material in the process of mechanical manufacturing. With the development of science and technology and the enhancement of environmental protection awareness, the negative impact of cutting fluid has attracted increasing attention. It is very harmful to the environment and human body, especially the pollution of water resources by waste liquid. Mineral oil is one of the main components of metal cutting fluid, which has poor biodegradability and can stay in water and soil for a long time. In addition, the additives of metal cutting fluids also pollute the environment in many ways. For example, s...

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Problems solved by technology

[0003] The Chinese patent with the publication number CN 104046483 A discloses an environmentally friendly anti-rust cutting fluid, the components of which are as follows: 5-9 parts of p-tert-butylbenzoic acid, 4-7 parts of benzoic acid, 3.8-9.6 parts of diethanolamine, 1.6-2.7 parts of polyacrylamide, 3-5 parts of boric acid, 3.4-7.5 parts of vulcanized lard, 2.1-3.7 parts of tetraethoxysilane, 10-18 parts of ricinamide, 2.3-6.4 parts of isothiazolone, water 38 parts, although the cutting fluid does not contain sodium nitrite and has good anti-rust performance, but the p-tert-butyl benzoic acid it contains is moderately toxic, and will cause respiratory tract irritation after inhalation, thereby inducing various respiratory diseases. , the lubricating performance of the cutting fluid in this patent is poor, so its application is greatly restricted

[0004] The Chinese patent with the publication number CN 105733792 A discloses a cutting fluid whose components are as follows: 1-5 parts of polyaniline, 2-20 parts of boric acid, 1-13 parts of sodium silicate, sodium dodecylbenzenesulfonate 2-15 parts, 2-6 parts of benzoic acid, 3-9 parts of isopropanolamine, 1-6 parts of glycol ether, 4-8 parts of potassium tetraborate, 2-8 parts of tetramethylammonium nitrate, calcium lactate 1-6 parts, 20-50 parts of water, it has excellent anti-corrosion performance, and the sodium dodecylbenzenesulfonate, benzoic acid, and glycol ether it contains are all toxic and will pollute the environment. In addition, the patent The lubricating performance and extreme pressure resistance performance of the cutting fluid finally obtained in the cutting fluid have limited improvement, and need to be further improved to meet the needs of industrial production

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