Water-based semi-synthetic cutting fluid with high cooling performance and application of water-based semi-synthetic cutting fluid

Abstract

The invention provides a water-based semi-synthetic cutting fluid with high cooling performance and application thereof. The water-based semi-synthetic cutting fluid comprises the following raw materials in percentage by mass: 25%-30% of naphthenic base oil, 1%-2% of a surfactant, 1%-5% of an emulsifier, 2%-4% of oleic acid, 0.5%-1.5% of sodium sulfonate, 0.5%-1% of sodium bicarbonate, 2%-5% of glycerol, 1%-3% of phosphotriester, 0.2%-0.5% of a defoaming agent, 0.5%-1.5% of a corrosion inhibitor, 8%-12% of an antirust agent and the balance of water. According to the present invention, by optimizing the formula, the prepared aqueous semi-synthetic cutting fluid can effectively reduce the friction during the metal cutting and grinding process, reduce the heat and prevent the corrosion, and has advantages of excellent cooling performance and excellent corrosion resistance, and the preparation method is simple.

Description

Technical Field

[0001] The invention belongs to the technical field of metal processing, and in particular relates to an aqueous semi-synthetic cutting fluid with high cooling performance and application thereof. Background Art

[0002] Cutting fluid (coolant) is an industrial liquid used to cool and lubricate cutting tools and workpieces during metal cutting and grinding. Cutting fluid is scientifically compounded with a variety of super-functional additives, and has good cooling performance, lubrication performance, rust prevention performance, oil removal and cleaning function, anti-corrosion function, and easy dilution. Water-based semi-synthetic cutting fluid is a metalworking fluid that combines the advantages of oily cutting fluid and water-soluble cutting fluid. It is mainly composed of base oil, surfactant, rust inhibitor, extreme pressure agent, preservative and other additives and water. It can significantly reduce the wear of cutting tools, improve the processing accuracy of workpieces, and is easy to clean and discharge, meeting environmental protection requirements.

[0003] In order to solve the problems of friction, heat generation and rust between the workpiece and the cutting tool during metal processing, various additives can be scientifically formulated to reduce friction, reduce heat and prevent rust, so as to better meet the needs of metal device processing. Summary of the invention

[0004] Based on this, the purpose of the present invention is to provide an aqueous semi-synthetic cutting fluid with high cooling performance and its application; the aqueous semi-synthetic cutting fluid has excellent cooling performance and anti-corrosion performance through formula optimization.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions.

[0006] The first aspect of the present invention provides an aqueous semi-synthetic cutting fluid, comprising the following raw materials in mass fraction: 25% to 30% of cycloalkyl base oil, 1% to 2% of surfactant, 1% to 5% of emulsifier, 2% to 4% of oleic acid, 0.5% to 1.5% of sodium sulfonate, 0.5% to 1% of sodium bicarbonate, 2% to 5% of glycerol, 1% to 3% of triester phosphate, 0.2% to 0.5% of defoamer, 0.5% to 1.5% of corrosion inhibitor, 8% to 12% of rust inhibitor, and the balance is water.

[0007] In some embodiments, the aqueous semi-synthetic cutting fluid includes the following raw materials in mass fraction: 20% to 30% cycloalkyl base oil, 1% to 2% surfactant, 1% to 3% emulsifier, 2% to 3% oleic acid, 0.5% to 1% sodium sulfonate, 0.5% to 1% sodium bicarbonate, 2% to 3% glycerol, 1% to 2% phosphate triester, 0.2% to 0.5% defoamer, 0.5% to 1% corrosion inhibitor, 8% to 10% rust inhibitor, and the balance is water.

[0008] In some embodiments, the surfactant is selected from at least one of Tween-80, TX-10, polyethylene glycol borate, polyethylene glycol 400, and dodecylbenzene sulfonate.

[0009] In some embodiments, the emulsifier is selected from at least one of Span 60, fatty acid amide polyoxyethylene ether, dodecyl polyoxyethylene ether triethanolamine sulfate, nonylphenol polyoxyethylene ether and sorbitan monooleate.

[0010] In some embodiments, the defoaming agent is selected from at least one of diethylhexanol, isooctyl alcohol, isopentanol, castor oil polyoxyethylene ether and methyl silicone oil.

[0011] In some embodiments, the corrosion inhibitor is selected from at least one of phenol ether phosphate, fatty alcohol ether phosphate, isotridecanol ether phosphate potassium salt, lauryl phosphate and isotridecanol ether phosphate.

[0012] In some embodiments, the rust inhibitor is selected from at least one of sodium carbonate and triethanolamine.

[0013] The second aspect of the present invention provides a method for preparing the aqueous semi-synthetic cutting fluid as described above, comprising the following steps: (1) mixing a cycloalkyl base oil with a portion of water and stirring uniformly; (2) adding a surfactant and continuously stirring until the emulsification is uniform; (3) adding the remaining water, emulsifier, oleic acid, sodium sulfonate, sodium bicarbonate, glycerol, triester phosphate, defoamer, corrosion inhibitor and rust inhibitor, stirring until they are completely dissolved, thereby obtaining the cutting fluid.

[0014] In some embodiments, the stirring temperature is 30°C to 40°C.

[0015] The third aspect of the present invention provides the use of the aqueous semi-synthetic cutting fluid as described above in metal processing.

[0016] The present invention provides an aqueous semi-synthetic cutting fluid. By optimizing the formula, especially compounding sodium sulfonate, sodium bicarbonate and triester phosphate, the aqueous semi-synthetic cutting fluid can effectively reduce friction, reduce heat and prevent rust in the process of metal cutting and grinding, has excellent cooling performance and anti-corrosion performance, and has a simple preparation method.

[0017] The aqueous semi-synthetic cutting fluid of the present invention is suitable for cutting processing of various metal materials (such as steel, cast iron, copper, aluminum, etc.), including turning, milling, drilling, grinding and other processes. When used, the aqueous semi-synthetic cutting fluid of the present invention is added to the circulation system of the cutting machine tool, and the cutting fluid is circulated by pumping. DETAILED DESCRIPTION

[0018] For ease of understanding of the present invention, the present invention will be described more fully below with reference to the embodiments, and preferred embodiments of the present invention are given below. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. The purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. It should be understood that the experimental methods in the following examples that do not specify specific conditions are usually based on conventional conditions or the conditions recommended by the manufacturer. The various commonly used reagents used in the embodiments are all commercially available products.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0020] The following is a description with reference to specific implementation methods.

[0021] Example 1

[0022] The present embodiment provides an aqueous semi-synthetic cutting fluid, comprising the following raw materials in mass fractions: 27% cycloalkyl base oil, 1.5% surfactant (Tween-80), 2% emulsifier (fatty acid amide polyoxyethylene ether), 3% oleic acid, 1% sodium sulfonate, 0.5% sodium bicarbonate, 3% glycerol, 2% phosphate triester, 0.5% defoamer (castor oil polyoxyethylene ether), 1% corrosion inhibitor (lauryl phosphate), 10% rust inhibitor (triethanolamine), and the balance is water.

[0023] Example 2

[0024] The present embodiment provides an aqueous semi-synthetic cutting fluid, comprising the following raw materials in mass fractions: 30% of cycloalkyl base oil, 2% of surfactant (polyethylene glycol borate), 3% of emulsifier (fatty acid amide polyoxyethylene ether), 2% of oleic acid, 1.5% of sodium sulfonate, 1% of sodium bicarbonate, 2% of glycerol, 1% of triester phosphate, 0.3% of defoaming agent (castor oil polyoxyethylene ether), 1.5% of corrosion inhibitor (lauryl phosphate), 8% of rust inhibitor (triethanolamine), and the balance is water.

[0025] Example 3

[0026] The present embodiment provides an aqueous semi-synthetic cutting fluid, comprising the following raw materials in mass fractions: 26% of cycloalkyl base oil, 1.5% of surfactant (Tween-80), 4% of emulsifier (sorbitan monooleate), 3% of oleic acid, 0.8% of sodium sulfonate, 0.8% of sodium bicarbonate, 5% of glycerol, 1.5% of triester phosphate, 0.5% of defoaming agent (methyl silicone oil), 0.5% of corrosion inhibitor (lauryl phosphate), 12% of rust inhibitor (triethanolamine), and the balance is water.

[0027] Comparative Example 1

[0028] This comparative example provides an aqueous semi-synthetic cutting fluid, which is the same as Example 1 except that sodium bicarbonate is not added (an equal amount of sodium sulfonate is used instead), and specifically includes the following raw materials in mass fractions:

[0029] 27% cycloalkyl base oil, 1.5% surfactant (Tween-80), 2% emulsifier (fatty acid amide polyoxyethylene ether), 3% oleic acid, 1.5% sodium sulfonate, 3% glycerol, 2% phosphate triester, 0.5% defoaming agent (castor oil polyoxyethylene ether), 1% corrosion inhibitor (lauryl phosphate), 10% rust inhibitor (triethanolamine), and the balance is water.

[0030] Comparative Example 2

[0031] This comparative example provides an aqueous semi-synthetic cutting fluid, which is the same as Example 1 except that sodium sulfonate is not added (an equal amount of sodium bicarbonate is used instead), and specifically includes the following raw materials in mass fractions:

[0032] 27% cycloalkyl base oil, 1.5% surfactant (Tween-80), 2% emulsifier (fatty acid amide polyoxyethylene ether), 3% oleic acid, 1.5% sodium bicarbonate, 3% glycerol, 2% phosphate triester, 0.5% defoaming agent (castor oil polyoxyethylene ether), 1% corrosion inhibitor (lauryl phosphate), 10% rust inhibitor (triethanolamine), and the balance is water.

[0033] Comparative Example 3

[0034] This comparative example provides an aqueous semi-synthetic cutting fluid, which is the same as Example 1 except that no phosphate triester is added, and specifically includes the following raw materials in mass fractions:

[0035] The present embodiment provides an aqueous semi-synthetic cutting fluid, comprising the following raw materials in mass fractions: 27% cycloalkyl base oil, 1.5% surfactant (Tween-80), 2% emulsifier (fatty acid amide polyoxyethylene ether), 3% oleic acid, 1% sodium sulfonate, 0.5% sodium bicarbonate, 3% glycerol, 0.5% defoamer (castor oil polyoxyethylene ether), 1% corrosion inhibitor (lauryl phosphate), 10% rust inhibitor (triethanolamine), and the balance is water.

[0036] The aqueous semi-synthetic cutting fluid of the above-mentioned embodiments and comparative examples can be prepared by the following method: (1) mixing a cycloalkyl base oil with a portion of water, and stirring them uniformly at 30° C.; (2) adding a surfactant, and continuously stirring at 30° C. until the emulsification is uniform; (3) adding the remaining water, emulsifier, oleic acid, sodium sulfonate, sodium bicarbonate, glycerol, triester phosphate, defoamer, corrosion inhibitor and rust inhibitor, and stirring at 30° C. until they are completely dissolved, thereby obtaining the aqueous semi-synthetic cutting fluid.

[0037] The following indicators and properties of the prepared aqueous semi-synthetic cutting fluid were tested according to the method in GB / T 6144-2010: appearance, pH value, anti-corrosion performance, anti-rust performance and cooling performance.

[0038] Fill in the test results in Table 1.

[0039] Table 1

[0040]

[0041]

[0042] As can be seen from Table 1, the various indicators of the aqueous semi-synthetic cutting fluid of the present invention (Examples 1 to 3) meet the technical indicator requirements of GB / T6144-2010, and have excellent cooling performance and anti-corrosion performance.

[0043] The present invention optimizes the formula, especially the compound use of sodium sulfonate, sodium bicarbonate and phosphate triester, so that the aqueous semi-synthetic cutting fluid of the present invention can effectively reduce friction in the metal cutting and grinding process, reduce heat and prevent rust, and has excellent cooling performance and corrosion resistance. Compared with Example 1, the aqueous semi-synthetic cutting fluid of Comparative Example 1 does not contain sodium bicarbonate, the aqueous semi-synthetic cutting fluid of Comparative Example 2 does not contain sodium sulfonate, and the aqueous semi-synthetic cutting fluid of Comparative Example 2 does not contain phosphate triester, all of which affect the performance of the prepared aqueous semi-synthetic cutting fluid, resulting in reduced cooling performance and corrosion resistance.

[0044] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A water-based semi-synthetic cutting fluid, characterized in that: The invention comprises the following raw materials in mass fraction: 25%-30% of cycloalkyl base oil, 1%-2% of surfactant, 1%-5% of emulsifier, 2%-4% of oleic acid, 0.5%-1.5% of sodium sulfonate, 0.5%-1% of sodium bicarbonate, 2%-5% of glycerol, 1%-3% of triester phosphate, 0.2%-0.5% of defoamer, 0.5%-1.5% of corrosion inhibitor, 8%-12% of rust inhibitor, and the balance is water.

2. The aqueous semi-synthetic cutting fluid according to claim 1, characterized in that: The invention comprises the following raw materials in mass fraction: 20%-30% of cycloalkyl base oil, 1%-2% of surfactant, 1%-3% of emulsifier, 2%-3% of oleic acid, 0.5%-1% of sodium sulfonate, 0.5%-1% of sodium bicarbonate, 2%-3% of glycerol, 1%-2% of triester phosphate, 0.2%-0.5% of defoamer, 0.5%-1% of corrosion inhibitor, 8%-10% of rust inhibitor, and the balance is water.

3. The aqueous semi-synthetic cutting fluid according to claim 1 or 2, characterized in that: The surfactant is selected from at least one of Tween-80, TX-10, polyethylene glycol borate, polyethylene glycol 400 and dodecylbenzene sulfonate.

4. The aqueous semi-synthetic cutting fluid according to claim 1 or 2, characterized in that: The emulsifier is selected from at least one of Span 60, fatty acid amide polyoxyethylene ether, dodecyl polyoxyethylene ether triethanolamine sulfate, nonylphenol polyoxyethylene ether and sorbitan monooleate.

5. The aqueous semi-synthetic cutting fluid according to claim 1 or 2, characterized in that: The defoaming agent is selected from at least one of diethylhexanol, isooctyl alcohol, isopentanol, castor oil polyoxyethylene ether and methyl silicone oil.

6. The aqueous semi-synthetic cutting fluid according to claim 1 or 2, characterized in that: The corrosion inhibitor is selected from at least one of phenol ether phosphate, fatty alcohol ether phosphate, isotridecanol ether phosphate potassium salt, lauryl phosphate and isotridecanol ether phosphate.

7. The aqueous semi-synthetic cutting fluid according to claim 1 or 2, characterized in that: The rust inhibitor is selected from at least one of sodium carbonate and triethanolamine.

8. The method for preparing an aqueous semi-synthetic cutting fluid according to any one of claims 1 to 7, characterized in that: The method comprises the following steps: (1) mixing cycloalkyl base oil with part of water and stirring evenly; (2) adding a surfactant and continuously stirring until the emulsification is evenly achieved; and (3) adding the remaining water, emulsifier, oleic acid, sodium sulfonate, sodium bicarbonate, glycerol, triester phosphate, defoamer, corrosion inhibitor and rust inhibitor, stirring until the oil is completely dissolved.

9. The method for preparing an aqueous semi-synthetic cutting fluid according to claim 8, characterized in that: The stirring temperature is 30°C to 40°C.

10. Use of the aqueous semi-synthetic cutting fluid according to any one of claims 1 to 7 in metal processing.

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