Discharge-free recyclable water-based cutting fluid and preparation method thereof

Abstract

The invention discloses emission-free reusable waterborne cutting fluid. The cutting fluid is characterized by being prepared from the following ingredients in weight percentage: 5 to 15% of high-viscosity water-soluble polyether SDN-20, 0.1 to 10% of graphene, 5 to 25% of polyether SDR-40, 2 to 20% of wetting agent, 0.2 to 1.5% of glacial acetic acid, 0.1 to 10% of complexing agent, 4 to 15% of anti-wear agent, 5 to 15% of triethanolamine, 1 to 2% of Grotan OK and 20 to 77.6% of water. The emission-free reusable waterborne cutting fluid has the advantages of no emission, reusability, no replacement, excellent lubrication cooling performance, anti-wear extreme pressure property, rust and corrosion resistance, high inverse solubility, biological stability, corruptibility resistance, stability in all the items of performance, greenness, environmental friendliness, excellent processability, simple production technology, easily obtained raw materials and good product universality.

Description

Technical field [0001] The invention relates to a metal working fluid, in particular to a non-dischargeable and recyclable water-based cutting fluid used for cooling and lubricating tools or processed parts during metal cutting, grinding and grinding processes and a preparation method thereof. Background technique [0002] Cutting fluid, also known as chip fluid. It is an industrial liquid used in metal cutting, grinding and grinding processes to cool and lubricate tools and processed parts. Cutting fluid is an important supporting material for metal cutting. Water-based cutting fluids are usually prepared by extreme pressure agents, rust inhibitors, mineral oils and various surfactants. They not only have the lubricity and extreme pressure properties of emulsified oils, but also have the environmental performance and excellent performance of synthetic cutting fluids. The cleaning performance, long service cycle and other performance. However, during the use of traditional cut...

AI Technical Summary

Problems solved by technology

However, during the use of traditional cutting fluids, water, air, workpieces and dust may bring fungi into the cutting fluid, which will cause the cutting fluid to smell and deteriorate. The growth of bacteria will consume the emulsifier and cause the oil phase to precipitate. As the concentration decreases, the lubricating performance also decreases. Aerophilic bacteria will exhale carbon dioxide to lower the PH value, resulting in a decrease in anti-rust performance. At the same time, it further promotes the reproduction of bacteria, causing a vicious circle. Therefore, the growth of bacteria not only makes the cutting fluid invalid , affecting the service life, the service life is generally 3-6 months, and it needs to be replaced frequently, and the replaced waste liquid will cause environmental pollution, and the treatment fee required for the waste liquid to be discharged to environmental protection regulations is too large, which increases production costs. , the performance of traditional cutting fluid is not stable enough, because the lubricating ability of water is insufficient and easy to rust, for this reason, various additives must be added, and the components are quite complicated. There are roughly 20 components in the better cutting fluid in the prior art Left and right, a complex chemical balance is formed in the solution. In the process of industrialized large-scale production, this balance can be maintained for a short time, and the performance of the cutting fluid fluctuates greatly, resulting in an imbalance of the cutting fluid composition, changes in performance, and affects the processing quality.

More importantly, due to the complexity of the components, in order to apply to different requirements, it is necessary to increase the content of a certain component, but after the content of the component is increased, it is necessary to consider adding other additives to suppress the adverse effects of the addition, so that Repeated circulation makes the types of cutting fluid complicated

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