CN107418693B - Aluminum alloy cutting fluid and preparation method thereof - Google Patents

Aluminum alloy cutting fluid and preparation method thereof Download PDF

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Publication number
CN107418693B
CN107418693B CN201710411651.3A CN201710411651A CN107418693B CN 107418693 B CN107418693 B CN 107418693B CN 201710411651 A CN201710411651 A CN 201710411651A CN 107418693 B CN107418693 B CN 107418693B
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aluminum alloy
cutting fluid
alloy cutting
boric acid
deionized water
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CN107418693A (en
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林秋仲
雷素萍
潘文
阮海琼
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ALNAN ALUMINIUM Co Ltd
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ALNAN ALUMINIUM Co Ltd
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  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

The invention relates to an aluminum alloy cutting fluid and a preparation method thereof, which are characterized by comprising the following raw materials in percentage by weight: 15-30% of naphthenic oil, 5-8% of boric acid ester containing sulfur and nitrogen, 3-5% of potassium borate, 2-4% of triethanolamine oleate, 4-8% of nonionic surfactant, 2-4% of anionic surfactant, 1-3% of corrosion inhibitor, 1-3% of antirust agent, 0.5-2% of stabilizer, 0.1-1.0% of defoaming agent, 0.1-0.5% of composite bactericide and the balance of deionized water. The aluminum alloy cutting fluid has good extreme pressure abrasion resistance, corrosion inhibition, defoaming property and stability, has no damage to a cutter, no friction and wear to a workpiece, easy separation of cutting pins, long service life, no pungent smell, low toxicity, environmental protection, easy cleaning and degradation; the aluminum alloy cutting fluid has excellent cleaning and cooling performance, and can quickly take away a large amount of heat and cutting powder generated during high-speed cutting of aluminum alloy.

Description

Aluminum alloy cutting fluid and preparation method thereof
Technical Field
The invention belongs to the technical field of metal cutting fluid, and particularly relates to aluminum alloy cutting fluid and a preparation method thereof.
Background
In the prior art, the aluminum alloy has low density, high strength and good plasticity, can be processed into various sections, has excellent heat conductivity and electrical conductivity and good corrosion resistance, and has wide industrial application, and the usage amount is second to that of steel. However, the aluminum alloy has strong chemical activity, soft texture and strong viscosity, and the problems of knife sticking, color change and the like are easy to occur in the processing, so the demand of the special cutting fluid for processing the aluminum alloy is increasing day by day. In the use process of the aluminum alloy cutting fluid in the current market, the phenomena that the diluent has oil soap, the emulsification speed is slowed down and the like can occur, oil drops which are not completely emulsified can be adsorbed on the surface of a workpiece to cause black spots, the workpiece is scrapped, the yield of the workpiece is influenced, the waste of aluminum materials is serious, and the ideal use effect cannot be achieved while the waste of the oil is caused.
In addition, since the cutting fluid contains components that can be utilized by microorganisms, such as mineral oil, fatty acid soap, amine, sulfonate, and water, the cutting fluid is easily decomposed by microorganisms (such as bacteria and fungi), and the cutting fluid is degraded in performance such as rust prevention and lubrication, which eventually causes the cutting fluid to be spoiled. In order to prevent the water-based cutting fluid from being deteriorated, it is generally necessary to add an appropriate bactericide to the formulation composition of the cutting fluid or its dilution to control the growth and propagation of microorganisms. However, if the same bactericide is used for a long time, microbes can generate drug resistance, and the current bactericide has high toxicity and can be absorbed from the skin of a human body after being contacted for a long time, so that chronic poisoning is caused, and the health of the human body is seriously damaged.
Disclosure of Invention
The invention aims to provide an aluminum alloy cutting fluid and a preparation method thereof, and the aluminum alloy cutting fluid has good extreme pressure abrasion resistance, corrosion inhibition, defoaming property and stability, no pungent smell, low toxicity, environmental protection, and easy cleaning and degradation.
The invention is realized by the following steps:
the aluminum alloy cutting fluid is characterized by comprising the following raw materials in percentage by weight: 15-30% of naphthenic oil, 5-8% of boric acid ester containing sulfur and nitrogen, 3-5% of potassium borate, 2-4% of triethanolamine oleate, 4-8% of nonionic surfactant, 2-4% of anionic surfactant, 1-3% of corrosion inhibitor, 1-3% of antirust agent, 0.5-2% of stabilizer, 0.1-1.0% of defoaming agent, 0.1-0.5% of composite bactericide and the balance of deionized water.
The boric acid ester containing sulfur and nitrogen is synthesized by boric acid ester, xanthic acid and diethanol amine.
Further preferably, the nonionic surfactant is composed of alkylphenol polyoxyethylene and nonylphenol polyoxyethylene, and the weight ratio of the alkylphenol polyoxyethylene to the nonylphenol polyoxyethylene is 1: 1.
Preferably, the anionic surfactant is composed of fatty alcohol-polyoxyethylene ether sodium sulfate and polyoxyethylene ether disodium sulfosuccinate, and the weight ratio of the fatty alcohol-polyoxyethylene ether sodium sulfate to the polyoxyethylene ether disodium sulfosuccinate is 1-2: 1.
Preferably, the corrosion inhibitor is one or a mixture of more of polyaspartic acid, benzotriazole, sodium metasilicate, tetraethoxysilane and methyltrimethoxysilane.
Further preferably, the stabilizer consists of sodium polyacrylate, calcium gluconate and sulfonated lignin, and the weight ratio of the sodium polyacrylate, the calcium gluconate and the sulfonated lignin is 1:1: 1.
Preferably, the antirust agent is a water-based antirust agent, the water-based antirust agent consists of diethylene glycol monobutyl ether, sorbitol, triethanolamine, boric acid diethanol amine ester, acrylic ester and deionized water, and the weight ratio of the diethylene glycol monobutyl ether to the sorbitol to the triethanolamine to the boric acid diethanol amine ester to the acrylic ester to the deionized water is 1:1:1:0.5: 20-30.
Further preferably, the defoaming agent is a silicone defoaming agent and/or a polyether defoaming agent.
Preferably, the composite bactericide consists of isothiazolinone, tetradecyl dimethyl benzyl ammonium chloride and dodecyl dimethyl benzyl ammonium bromide, wherein the weight ratio of the isothiazolinone to the tetradecyl dimethyl benzyl ammonium chloride to the dodecyl dimethyl benzyl ammonium bromide is 1-3:1-2: 0.1-0.5.
The preparation method of the aluminum alloy cutting fluid is characterized by comprising the following steps:
s1, firstly, putting naphthenic oil, boric acid ester containing sulfur and nitrogen, potassium borate, triethanolamine oleate and deionized water into a blending kettle, heating to 60-70 ℃, and stirring for 20-25min at the stirring speed of 250 rpm;
s2, after the mixture obtained in the step S1 is cooled to 40-50 ℃, sequentially adding a nonionic surfactant, an anionic surfactant, a corrosion inhibitor, an antirust agent, a stabilizer, a defoaming agent and a composite bactericide, stirring for 10min, adjusting the pH value of the mixed solution to 8-9.5 by using triethanolamine, continuing stirring for 20-25min, standing and cooling to room temperature to obtain the aluminum alloy cutting fluid.
The outstanding substantive features and remarkable progress of the invention are as follows:
the aluminum alloy cutting fluid is scientifically compatible with the naphthenic oil, the sulfur-nitrogen-containing borate, the potassium borate, the triethanolamine oleate and the deionized water by selecting the specific nonionic surfactant, the anionic surfactant, the corrosion inhibitor, the antirust agent, the stabilizer, the defoaming agent and the composite bactericide, has good extreme pressure wear resistance, corrosion inhibition, bacteriostasis, defoaming property and stability, can effectively protect a cutter in the using process, prolongs the service life of the cutter, has no friction and wear on a workpiece, is easy to separate cut and sell, has long service life, no pungent smell, low toxicity, environmental protection, strong bacteriostatic and bactericidal capabilities and is easy to clean and degrade; the aluminum alloy cutting fluid has excellent cleaning and cooling performance, and can quickly take away a large amount of heat and cutting powder generated during high-speed cutting of aluminum alloy.
2. The invention adopts the sulfur nitrogen boric acid ester, the potassium borate and the triethanolamine oleate as the composite lubricating additive, has good oil solubility and hydrolytic stability, can obviously improve the thermal stability, the wear resistance, the antifriction performance and the extreme pressure performance of the aluminum alloy cutting fluid,
3. the stabilizing agent adopted by the invention can obviously improve the stability of the aluminum alloy cutting fluid, can enable oil and water to form stable micro emulsion, has small dosage, is environment-friendly and easy to degrade, and the sulfonated lignin has the effect of dispersing and effectively avoids the formation of scale.
4. The water-based antirust agent adopted by the invention does not contain oily substances, has good water solubility, excellent antirust performance, no toxicity, no harm, safety and reliability, is a green and environment-friendly product, and does not stain the surface of a workpiece when in use.
5. The composite bactericide adopted by the invention has low toxicity, is basically harmless to human, has high efficiency, safe operation, better compatibility, wider pH application range, natural biodegradation and obvious antibacterial and antifungal properties, can simultaneously inhibit various bacteria and fungi, and obviously prolongs the service life of the cutting fluid.
Detailed Description
The present invention will be described below with reference to examples.
Example 1
The aluminum alloy cutting fluid comprises the following raw materials in percentage by weight: 15% of naphthenic oil, 5% of sulfur-nitrogen-containing borate, 3% of potassium borate, 2% of triethanolamine oleate, 4% of nonionic surfactant, 2% of anionic surfactant, 1% of corrosion inhibitor, 1% of antirust agent, 0.5% of stabilizer, 0.1% of defoaming agent, 0.1% of composite bactericide and the balance of deionized water.
The anionic surfactant is composed of fatty alcohol-polyoxyethylene ether sodium sulfate and polyoxyethylene ether disodium sulfosuccinate, and the weight ratio of the fatty alcohol-polyoxyethylene ether sodium sulfate to the polyoxyethylene ether disodium sulfosuccinate is 1-2: 1.
The corrosion inhibitor is polyaspartic acid.
The antirust agent is a water-based antirust agent, the water-based antirust agent is composed of diethylene glycol monobutyl ether, sorbitol, triethanolamine, boric acid diethanol amine ester, acrylic ester and deionized water, and the weight ratio of the diethylene glycol monobutyl ether, the sorbitol, the triethanolamine, the boric acid diethanol amine ester, the acrylic ester and the deionized water is 1:1:1:1:0.5: 20.
The defoaming agent is an organic silicon defoaming agent.
The composite bactericide consists of isothiazolinone, tetradecyl dimethyl benzyl ammonium chloride and dodecyl dimethyl benzyl ammonium bromide, wherein the weight ratio of the isothiazolinone to the tetradecyl dimethyl benzyl ammonium chloride to the dodecyl dimethyl benzyl ammonium bromide is 1:1: 0.1.
The preparation method of the aluminum alloy cutting fluid comprises the following steps:
s1, firstly, putting naphthenic oil, boric acid ester containing sulfur and nitrogen, potassium borate, triethanolamine oleate and deionized water into a blending kettle, heating to 60-70 ℃, and stirring for 20-25min at the stirring speed of 250 rpm;
s2, after the mixture obtained in the step S1 is cooled to 40-50 ℃, sequentially adding a nonionic surfactant, an anionic surfactant, a corrosion inhibitor, an antirust agent, a stabilizer, a defoaming agent and a composite bactericide, stirring for 10min, adjusting the pH value of the mixed solution to 8-9.5 by using triethanolamine, continuing stirring for 20-25min, standing and cooling to room temperature to obtain the aluminum alloy cutting fluid.
Example 2
The aluminum alloy cutting fluid comprises the following raw materials in percentage by weight: 20% of naphthenic oil, 6% of sulfur-nitrogen-containing borate ester, 4% of potassium borate, 3% of triethanolamine oleate, 5% of nonionic surfactant, 3% of anionic surfactant, 2% of corrosion inhibitor, 2% of antirust agent, 1.0% of stabilizer, 0.5% of defoaming agent, 0.2% of composite bactericide and the balance of deionized water.
The anionic surfactant is composed of fatty alcohol-polyoxyethylene ether sodium sulfate and polyoxyethylene ether disodium sulfosuccinate, and the weight ratio of the fatty alcohol-polyoxyethylene ether sodium sulfate to the polyoxyethylene ether disodium sulfosuccinate is 1-2: 1.
The corrosion inhibitor is a mixture of polyaspartic acid and benzotriazole.
The antirust agent is a water-based antirust agent, the water-based antirust agent is composed of diethylene glycol monobutyl ether, sorbitol, triethanolamine, boric acid diethanol amine ester, acrylic ester and deionized water, and the weight ratio of the diethylene glycol monobutyl ether, the sorbitol, the triethanolamine, the boric acid diethanol amine ester, the acrylic ester and the deionized water is 1:1:1:1:0.5: 25.
The defoaming agent is a polyether defoaming agent.
The composite bactericide consists of isothiazolinone, tetradecyl dimethyl benzyl ammonium chloride and dodecyl dimethyl benzyl ammonium bromide, wherein the weight ratio of the isothiazolinone to the tetradecyl dimethyl benzyl ammonium chloride to the dodecyl dimethyl benzyl ammonium bromide is 2:1: 0.2.
The preparation method is the same as that of example 1.
Example 3
The aluminum alloy cutting fluid comprises the following raw materials in percentage by weight: 30% of naphthenic oil, 8% of boric acid ester containing sulfur and nitrogen, 5% of potassium borate, 4% of triethanolamine oleate, 8% of nonionic surfactant, 4% of anionic surfactant, 3% of corrosion inhibitor, 3% of antirust agent, 2% of stabilizer, 1.0% of defoaming agent, 0.5% of composite bactericide and the balance of deionized water.
The anionic surfactant is composed of fatty alcohol-polyoxyethylene ether sodium sulfate and polyoxyethylene ether disodium sulfosuccinate, and the weight ratio of the fatty alcohol-polyoxyethylene ether sodium sulfate to the polyoxyethylene ether disodium sulfosuccinate is 1-2: 1.
The corrosion inhibitor is a mixture of sodium metasilicate, tetraethoxysilane and methyltrimethoxysilane.
The antirust agent is a water-based antirust agent, the water-based antirust agent is composed of diethylene glycol monobutyl ether, sorbitol, triethanolamine, boric acid diethanol amine ester, acrylic ester and deionized water, and the weight ratio of the diethylene glycol monobutyl ether, the sorbitol, the triethanolamine, the boric acid diethanol amine ester, the acrylic ester and the deionized water is 1:1:1:1:0.5: 28.
The defoaming agent is an organic silicon defoaming agent.
The composite bactericide consists of isothiazolinone, tetradecyl dimethyl benzyl ammonium chloride and dodecyl dimethyl benzyl ammonium bromide, wherein the weight ratio of the isothiazolinone to the tetradecyl dimethyl benzyl ammonium chloride to the dodecyl dimethyl benzyl ammonium bromide is 3:2: 0.3.
The preparation method is the same as that of example 1.
Example 4
The aluminum alloy cutting fluid comprises the following raw materials in percentage by weight: 25% of naphthenic oil, 7% of boric acid ester containing sulfur and nitrogen, 4.5% of potassium borate, 3.5% of triethanolamine oleate, 6% of nonionic surfactant, 3.5% of anionic surfactant, 2.5% of corrosion inhibitor, 2.5% of antirust agent, 1.5% of stabilizer, 0.8% of defoaming agent, 0.3% of composite bactericide and the balance of deionized water.
The anionic surfactant is composed of fatty alcohol-polyoxyethylene ether sodium sulfate and polyoxyethylene ether disodium sulfosuccinate, and the weight ratio of the fatty alcohol-polyoxyethylene ether sodium sulfate to the polyoxyethylene ether disodium sulfosuccinate is 1-2: 1.
The corrosion inhibitor is a mixture of polyaspartic acid, tetraethoxysilane and methyltrimethoxysilane.
The antirust agent is a water-based antirust agent, the water-based antirust agent is composed of diethylene glycol monobutyl ether, sorbitol, triethanolamine, boric acid diethanol amine ester, acrylic ester and deionized water, and the weight ratio of the diethylene glycol monobutyl ether, the sorbitol, the triethanolamine, the boric acid diethanol amine ester, the acrylic ester and the deionized water is 1:1:1:1:0.5: 30.
The defoaming agent is a polyether defoaming agent.
The composite bactericide consists of isothiazolinone, tetradecyl dimethyl benzyl ammonium chloride and dodecyl dimethyl benzyl ammonium bromide, wherein the weight ratio of the isothiazolinone to the tetradecyl dimethyl benzyl ammonium chloride to the dodecyl dimethyl benzyl ammonium bromide is 3:2: 0.5.
The preparation method is the same as that of example 1.
The main technical criteria (according to GB/T6144 and GB/T7919) were tested for examples 1-4, with the results given in the following table:
Figure BDA0001312544810000051
as can be seen from the above table, the aluminum alloy cutting fluid of the invention has various performance technical indexes such as appearance, storage stability, defoaming property, surface tension, antirust property, corrosion performance and the like which all accord with the national standard and the industrial standard.

Claims (4)

1. The aluminum alloy cutting fluid is characterized by comprising the following raw materials in percentage by weight: 15-30% of naphthenic oil, 5-8% of boric acid ester containing sulfur and nitrogen, 3-5% of potassium borate, 2-4% of triethanolamine oleate, 4-8% of nonionic surfactant, 2-4% of anionic surfactant, 1-3% of corrosion inhibitor, 1-3% of antirust agent, 0.5-2% of stabilizer, 0.1-1.0% of defoaming agent, 0.1-0.5% of composite bactericide and the balance of deionized water;
the anionic surfactant is composed of fatty alcohol-polyoxyethylene ether sodium sulfate and polyoxyethylene ether disodium sulfosuccinate, and the weight ratio of the fatty alcohol-polyoxyethylene ether sodium sulfate to the polyoxyethylene ether disodium sulfosuccinate is 1-2: 1;
the stabilizer consists of sodium polyacrylate, calcium gluconate and sulfonated lignin, wherein the weight ratio of the sodium polyacrylate, the calcium gluconate and the sulfonated lignin is 1:1: 1;
the antirust agent is a water-based antirust agent, the water-based antirust agent is composed of diethylene glycol monobutyl ether, sorbitol, triethanolamine, boric acid diethanol amine ester, acrylic ester and deionized water, and the weight ratio of the diethylene glycol monobutyl ether, the sorbitol, the triethanolamine, the boric acid diethanol amine ester, the acrylic ester and the deionized water is 1:1:1:0.5: 20-30;
the composite bactericide consists of isothiazolinone, tetradecyl dimethyl benzyl ammonium chloride and dodecyl dimethyl benzyl ammonium bromide, wherein the weight ratio of the isothiazolinone to the tetradecyl dimethyl benzyl ammonium chloride to the dodecyl dimethyl benzyl ammonium bromide is 1-3:1-2: 0.1-0.5.
2. The aluminum alloy cutting fluid according to claim 1, characterized in that: the corrosion inhibitor is one or a mixture of more of polyaspartic acid, benzotriazole, sodium metasilicate, tetraethoxysilane and methyltrimethoxysilane.
3. The aluminum alloy cutting fluid according to claim 1, characterized in that: the defoaming agent is an organic silicon defoaming agent and/or a polyether defoaming agent.
4. The method for producing an aluminum alloy cutting fluid according to claim 1, characterized in that:
s1, firstly, putting naphthenic oil, boric acid ester containing sulfur and nitrogen, potassium borate, triethanolamine oleate and deionized water into a blending kettle, heating to 60-70 ℃, and stirring for 20-25min at the stirring speed of 250 rpm;
s2, after the mixture in the step 1 is cooled to 40-50 ℃, sequentially adding a nonionic surfactant, an anionic surfactant, a corrosion inhibitor, an antirust agent, a stabilizer, a defoaming agent and a composite bactericide, stirring for 10min, adjusting the pH value of the mixed solution to 8-9.5 by using triethanolamine, continuing stirring for 20-25min, standing and cooling to room temperature to obtain the aluminum alloy cutting fluid.
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