Oil-based metal cutting fluid and preparation method thereof

Abstract

The invention discloses an oil-based metal cutting fluid and a preparation method thereof. The oil-based metal cutting fluid comprises the following ingredients in percentage by weight: 15-20% of basic oil, 3-5% of petroleum sodium sulfonate, 4-6% of zinc naphthenate, 1.5-2.5% of tall-oil fatty acid, 2-4% of emulsifier EL-20, 2-3% of castor oil, 0.2-0.4% of sodium hydroxide, 2-4% of boric acid, 4-6% of monoethanolamine, 3-5% of diethanol amine, 0.1-0.3% of benzotriazole, 0.1-0.3% of defoaming agent MS-75, 4-6% of span 80, 0.2-0.4% of solid formaldehyde, and the balance of water. By taking petroleum sodium sulfonate as an antirust agent and benzotriazole and ethanolamine as an anti-corrosion antioxidant, the oil-based metal cutting fluid has excellent wear resistance, antirust property, moldproof property, chemical stability and anti-microbial characteristic, thus having wide universality to various cutting modes and materials of workpieces.

Description

technical field [0001] The invention belongs to the technical field of metal cutting fluid, and in particular relates to an oil-based metal cutting fluid and a preparation method thereof. Background technique [0002] Cutting fluid is an industrial liquid used in various metal cutting processes to lubricate, cool and clean workpieces and tools in the processing area. High-performance cutting fluid should have good processing performance, physical and chemical properties and sanitation performance, such as lubrication, cooling , Anti-rust, degreasing cleaning, anti-corrosion, etc. [0003] While metal cutting fluid brings huge economic benefits to human beings, it also brings certain harm to the environment and operators. For example, the used cutting fluid may pollute water, air and soil; the phosphorus-containing antirust group It will cause eutrophication of water body, etc. [0004] Water-based cutting fluid has poor operability and processing performance, poor corrosio...

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Problems solved by technology

[0006] The invention provides an oil-based metal cutting fluid and a preparation method thereof, aiming to solve the problem of poor operability and processing performance of water-based cutting fluid, poor corrosion resistance of machine tools and workpieces, poor paint peeling resistance, and difficult use of cutting fluid and maintenance, the waste liquid is not easy to handle, the cost of waste liquid treatment is high, the maintenance cost of the machine tool is high, it is harmful to the human body and seriously pollutes the environment, and the existing oil-based cutting fluid will gradually deteriorate due to oxidation with the continuation of the storage or use period The increase in acidity will cause the workpiece and tool to rust, or the cutting oil will overflow due to the space occupied by oxidation and foaming, and the cleaning performance will also decrease due to an inappropriate increase in viscosity due to oxidation.

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