Environment-friendly metal cutting fluid as well as preparation method and application thereof

Abstract

The invention relates to the technical field of cutting fluid, in particular to environment-friendly metal cutting fluid as well as a preparation method and application thereof. The environment-friendly metal cutting fluid is prepared from the following raw materials: an oil phase, a water phase, a surfactant, a co-emulsifier, a corrosion inhibitor, a bactericide and a lubricating additive. The cutting fluid provided by the invention has the advantages of excellent lubricity and extreme pressure property, stable performance, difficult denaturation, excellent permeability, antirust property and extreme pressure antiwear property.

Description

Technical Field

[0001] The present invention relates to the technical field of cutting fluids, and in particular to an environmentally friendly metal cutting fluid and a preparation method and application thereof. Background Art

[0002] During the cutting process, a metal surface without a protective film layer will always be produced; in addition, the cutting process will always be in a high temperature and high pressure stress environment, which will cause damage to the tool and smoothness; therefore, a cutting fluid is indispensable in the cutting process; cutting fluid plays a role in extending the tool life, improving surface smoothness, reducing cutting force and preventing corrosion of metal workpieces during metal processing or forming.

[0003] During the use of cutting fluid, a complex adsorption reaction layer will be formed on the surface of the material. If the cutting fluid is used improperly, it will promote metal oxidation, causing discoloration, defects or corrosive cracks on the surface of the material.

[0004] Cutting fluids are classified into water-based metal cutting fluids and oil-based metal cutting fluids; water-based metal cutting fluids include soluble oils (emulsified oils), semi-synthetic fluids (microemulsions), and fully synthetic fluids. Water-based metal cutting fluids need to be diluted with water when used. The dilution ratio for cutting metal is usually 1% to 20%, of which 5% is the most commonly used. Fully synthetic cutting fluids are water-based products that do not contain mineral oils. All ingredients are water-soluble and do not require emulsifiers when formulated. At least one of the ingredients of the emulsion is insoluble in water, and an emulsifier needs to be added during compounding to evenly mix the oil phase and the water phase. Emulsions are divided into two types: emulsified oils and microemulsions. The difference between microemulsions and emulsified oils is mainly the amount of mineral oil content. Water-based cutting fluids are widely used because they are green and healthy and have good heat dissipation effects. However, semi-synthetic cutting fluids require emulsifiers, which can cause foaming when used. At the same time, they also face product stability and antibacterial issues that need to be resolved. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides an environmentally friendly metal cutting fluid, the preparation raw materials of which include: an oil phase, an aqueous phase, a surfactant, an emulsifier, a corrosion inhibitor, a bactericide, and a lubricating additive.

[0006] As an embodiment of the present invention, the raw materials for preparing the environmentally friendly metal cutting fluid include, by weight: 5 to 15 parts of oil phase, 30 to 40 parts of water phase, 10 to 20 parts of surfactant, 5 to 10 parts of emulsifier, 0.1 to 1.5 parts of corrosion inhibitor, 0.1 to 0.5 parts of bactericide, and 5 to 10 parts of lubricating additive.

[0007] As an embodiment of the present invention, the raw materials for preparing the environmentally friendly metal cutting fluid include, by weight: 13.5 parts of oil phase, 35 parts of water phase, 10 to 20 parts of surfactant, 5.5 parts of emulsifier, 1.4 parts of corrosion inhibitor, 0.4 parts of bactericide, and 7 parts of lubricating additive.

[0008] As an embodiment of the present invention, the oil phase comprises fermentation oil and base oil.

[0009] As an embodiment of the present invention, the mass ratio of the fermentation oil to the base oil is (2.5-5.5):(8-11).

[0010] As an embodiment of the present invention, the mass ratio of the fermented oil to the base oil is 3.5:10.

[0011] As an embodiment of the present invention, the surfactant comprises an anionic surfactant and a nonionic surfactant.

[0012] As an embodiment of the present invention, the raw materials for preparing the environmentally friendly metal cutting fluid further include polyalkylene glycol compounds.

[0013] The second aspect of the present invention provides a method for preparing an environmentally friendly metal cutting fluid, the steps are as follows:

[0014] Aqueous phase preparation

[0015] (1) Add distilled water to a beaker, add corrosion inhibitor, and stir thoroughly to obtain solution B;

[0016] (2) Add an appropriate amount of fungicide to solution B, heat and stir thoroughly to obtain solution C;

[0017] (3) adding a surfactant to solution C, heating and stirring thoroughly to obtain solution D;

[0018] (4) Add the aqueous portion of the lubricating additive to solution E, and heat and stir thoroughly to obtain solution F. The aqueous phase is thus prepared.

[0019] oil phase

[0020] (1) Add an appropriate amount of base oil to a beaker, add an emulsifier, and heat and stir thoroughly to obtain solution A';

[0021] (2) adding the remaining raw materials (except the fermented oil) to solution A and heating and stirring thoroughly to obtain solution B';

[0022] (3) Add the fermented oil to solution B', heat and stir thoroughly to obtain solution C'. The oil phase is prepared.

[0023] Oil and water mixing

[0024] (1) Slowly add the oil phase to the water phase and stir until the solution is clear to obtain the cutting fluid stock solution;

[0025] (2) Dilute the original solution 20 times with distilled water to obtain the cutting fluid dilution solution.

[0026] The second aspect of the present invention provides an environmentally friendly metal cutting fluid, characterized in that it is used in the field of cutting fluid technology.

[0027] By adopting the above technical solution, the present invention has the following beneficial effects:

[0028] The cutting fluid provided by the invention has excellent lubricity and extreme pressure properties, stable performance, not easy to change, and has excellent permeability, rust resistance, and extreme pressure and wear resistance. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The invention provides an environmentally friendly metal cutting fluid. The raw materials for preparing the metal cutting fluid include: 13.5 parts of an oil phase, 35 parts of an aqueous phase, 10 to 20 parts of a surfactant, 5.5 parts of an emulsifier, 1.4 parts of a corrosion inhibitor, 0.4 parts of a bactericide, and 7 parts of a lubricating additive.

[0031] oil phase

[0032] In the present invention, the oil phase comprises fermentation oil and base oil; in particular, the mass ratio of the fermentation oil to the base oil is (2.5-5.5):(8-11); further, the mass ratio of the fermentation oil to the base oil is 3.5:10.

[0033] In the present invention, the fermented oil is fermented tung oil and fermented linseed oil, and the mass ratio is 2:1.5.

[0034] In the present invention, the preparation method of the fermented tung oil is as follows:

[0035] The commercially available tung oil and culture solution are mixed, and then the bacteria are inoculated. After fermentation, the upper layer of oil is obtained by filtering and centrifugation, and then the water is evaporated at a constant temperature at medium and low temperature to obtain dried fermented tung oil.

[0036] The culture medium contains 20 g / L glucose, 5 g / L malt extract, 5 g / L yeast extract, and 1 L water; the culture medium is fermented at a temperature of 28°C for 24 hours. 31188. The inoculation amount of the strain is 6 vol%; then centrifugal separation is performed to obtain the oil phase of the fermented dragon's blood oil. The mass ratio of tung oil to culture solution is 1:10.

[0037] In the present invention, the preparation method of the fermented linseed oil is the same as that of the fermented tung oil.

[0038] Surfactants:

[0039] In the present invention, the surfactant comprises polyethylene glycol PEG-6000, triethanolamine oleate, and octylphenol polyoxyethylene ether, and the mass ratio is 5:3:2.

[0040] Emulsifier:

[0041] The co-emulsifier in the present invention is Solvay Geronol-EW01.

[0042] Corrosion Inhibitor

[0043] The corrosion inhibitor comprises a non-phosphorus aluminum corrosion inhibitor and benzotriazole.

[0044] Fungicides

[0045] The bactericide in the present invention is benzisothiazolinone.

[0046] Lubricant Additives

[0047] The lubricating additive in the present invention is an organic phosphate extreme pressure agent; more preferably, the organic phosphate extreme pressure agent comprises diisooctyl benzyl phosphate, Notai Chemical water-soluble polyether ester LYCO-S264, and chlorinated paraffin T301 (Jinzhou Shengbang Petrochemical Co., Ltd.); and the mass ratio is 0.1:1.5:8.4.

[0048] As a preferred embodiment of the present invention, the cutting fluid further comprises polyalkylene glycol monomethacrylate, specifically polyalkylene glycol monomethacrylate, CAS No. 58916-75-9.

[0049] The second aspect of the present invention provides a method for preparing an environmentally friendly metal cutting fluid, the steps are as follows:

[0050] Aqueous phase preparation

[0051] (1) Add distilled water to a beaker, add corrosion inhibitor, and stir thoroughly to obtain solution B;

[0052] (2) Add an appropriate amount of fungicide to solution B, heat and stir thoroughly to obtain solution C;

[0053] (3) adding a surfactant to solution C, heating and stirring thoroughly to obtain solution D;

[0054] (4) Add the aqueous portion of the lubricating additive to solution E, and heat and stir thoroughly to obtain solution F. The aqueous phase is thus prepared.

[0055] oil phase

[0056] (1) Add an appropriate amount of base oil to a beaker, add an emulsifier, and heat and stir thoroughly to obtain solution A';

[0057] (2) adding the remaining raw materials (except the fermented oil) to solution A and heating and stirring thoroughly to obtain solution B';

[0058] (3) Add the fermented oil to solution B', heat and stir thoroughly to obtain solution C'. The oil phase is prepared.

[0059] Oil and water mixing

[0060] (1) Slowly add the oil phase to the water phase and stir until the solution is clear to obtain the cutting fluid stock solution;

[0061] (2) Dilute the original solution 20 times with distilled water to obtain the cutting fluid dilution solution.

[0062] The present invention ferments oily substances to obtain oily substances with smaller molecular weights, and no additional defoaming agent needs to be added. In addition, the addition of some oily substances with smaller molecular weights has better stability and is not easy to demulsify. At the same time, the rust resistance and permeability are also better.

[0063] The present invention is further explained below in conjunction with specific implementation modes.

[0064] Example 1

[0065] The present embodiment provides an environmentally friendly metal cutting fluid, the raw materials for its preparation include: 13.5 parts of oil phase, 35 parts of water phase, 18 parts of surfactant, 5.5 parts of co-emulsifier, 1.4 parts of corrosion inhibitor, 0.4 parts of bactericide, 7 parts of lubricating additive, and 5 parts of polyalkylene glycol monomethacrylate.

[0066] The oil phase comprises fermented oil and base oil in a mass ratio of 3.5:10. The fermented oil is fermented tung oil and fermented linseed oil in a mass ratio of 2:1.5.

[0067] The preparation method of the fermented tung oil is as follows:

[0068] The commercially available tung oil and culture solution are mixed, and then the bacteria are inoculated. After fermentation, the upper layer of oil is obtained by filtering and centrifugation, and then the water is evaporated at a constant temperature at medium and low temperature to obtain dried fermented tung oil.

[0069] The culture medium contains 20 g / L glucose, 5 g / L malt extract, 5 g / L yeast extract, and 1 L water; the culture medium is fermented at a temperature of 28°C for 24 hours. 31188. The inoculation amount of the strain is 6 vol%; then centrifugal separation is performed to obtain the oil phase of the fermented dragon's blood oil. The mass ratio of tung oil to the culture solution is 1:10.

[0070] In the present invention, the preparation method of the fermented linseed oil is the same as that of the fermented tung oil.

[0071] The surfactant comprises polyethylene glycol PEG-6000, triethanolamine oleate, and octylphenol polyoxyethylene ether, and the mass ratio is 5:3:2.

[0072] The co-emulsifier is Solvay Geronol-EW01.

[0073] The corrosion inhibitor comprises a non-phosphorus aluminum corrosion inhibitor and benzotriazole, and the mass ratio is 1:1.

[0074] The bactericide is benzisothiazolinone.

[0075] The organic phosphate extreme pressure agent includes diisooctyl benzyl phosphate, Notai Chemical water-soluble polyether ester LYCO-S264, and chlorinated paraffin T301 (Jinzhou Shengbang Petrochemical Co., Ltd.); and the mass ratio is 0.1:1.5:8.4.

[0076] The method for preparing an environmentally friendly metal cutting fluid comprises the following steps:

[0077] Aqueous phase preparation

[0078] (1) Add distilled water to a beaker, add corrosion inhibitor, and stir thoroughly to obtain solution B;

[0079] (2) Add an appropriate amount of fungicide to solution B, heat and stir thoroughly to obtain solution C;

[0080] (3) adding a surfactant to solution C, heating and stirring thoroughly to obtain solution D;

[0081] (4) Add the aqueous portion of the lubricating additive to solution E, and heat and stir thoroughly to obtain solution F. The aqueous phase is thus prepared.

[0082] oil phase

[0083] (1) Add an appropriate amount of base oil to a beaker, add an emulsifier, and heat and stir thoroughly to obtain solution A';

[0084] (2) adding the remaining raw materials (except the fermented oil) to solution A and heating and stirring thoroughly to obtain solution B';

[0085] (3) Add the fermented oil to solution B', heat and stir thoroughly to obtain solution C'. The oil phase is prepared.

[0086] Oil and water mixing

[0087] (1) Slowly add the oil phase to the water phase and stir until the solution is clear to obtain the cutting fluid stock solution;

[0088] (2) Dilute the original solution 20 times with distilled water to obtain the cutting fluid dilution solution.

[0089] The method for preparing an environmentally friendly metal cutting fluid comprises the following steps:

[0090] Aqueous phase preparation

[0091] (1) Add distilled water to a beaker, add corrosion inhibitor, and stir thoroughly to obtain solution B;

[0092] (2) Add an appropriate amount of fungicide to solution B, heat and stir thoroughly to obtain solution C;

[0093] (3) adding a surfactant to solution C, heating and stirring thoroughly to obtain solution D;

[0094] (4) Add the aqueous portion of the lubricating additive to solution E, and heat and stir thoroughly to obtain solution F. The aqueous phase is thus prepared.

[0095] oil phase

[0096] (1) Add an appropriate amount of base oil to a beaker, add an emulsifier, and heat and stir thoroughly to obtain solution A';

[0097] (2) adding the remaining raw materials (except the fermented oil) to solution A and heating and stirring thoroughly to obtain solution B';

[0098] (3) Add the fermented oil to solution B', heat and stir thoroughly to obtain solution C'. The oil phase is prepared.

[0099] Oil and water mixing

[0100] (1) Slowly add the oil phase to the water phase and stir until the solution is clear to obtain the cutting fluid stock solution;

[0101] (2) Dilute the original solution 20 times with distilled water to obtain the cutting fluid dilution solution.

[0102] Example 2

[0103] The present embodiment provides an environmentally friendly metal cutting fluid, the raw materials for its preparation include: 13.5 parts of oil phase, 35 parts of water phase, 18 parts of surfactant, 5.5 parts of co-emulsifier, 1.4 parts of corrosion inhibitor, 0.4 parts of bactericide, 7 parts of lubricating additive, and 5 parts of polyalkylene glycol monomethacrylate.

[0104] The oil phase comprises fermented oil and base oil in a mass ratio of 3.5:10. The fermented oil is fermented tung oil.

[0105] The preparation method of the fermented tung oil is as follows:

[0106] The commercially available tung oil and culture solution are mixed, and then the bacteria are inoculated. After fermentation, the upper layer of oil is obtained by filtering and centrifugation, and then the water is evaporated at a constant temperature at medium and low temperature to obtain dried fermented tung oil.

[0107] The culture medium contains 20 g / L glucose, 5 g / L malt extract, 5 g / L yeast extract, and 1 L water; the culture medium is fermented at a temperature of 28°C for 24 hours. 31188. The inoculation amount of the strain is 6 vol%; then centrifugal separation is performed to obtain the oil phase of the fermented dragon's blood oil. The mass ratio of tung oil to the culture solution is 1:10.

[0108] The surfactant comprises polyethylene glycol PEG-6000, triethanolamine oleate, and octylphenol polyoxyethylene ether, and the mass ratio is 5:3:2.

[0109] The co-emulsifier is Solvay Geronol-EW01.

[0110] The corrosion inhibitor comprises a non-phosphorus aluminum corrosion inhibitor and benzotriazole, and the mass ratio is 1:1.

[0111] The bactericide is benzisothiazolinone.

[0112] The organic phosphate extreme pressure agent includes diisooctyl benzyl phosphate, Notai Chemical water-soluble polyether ester LYCO-S264, and chlorinated paraffin T301 (Jinzhou Shengbang Petrochemical Co., Ltd.); and the mass ratio is 0.1:1.5:8.4.

[0113] The method for preparing an environmentally friendly metal cutting fluid comprises the following steps:

[0114] Aqueous phase preparation

[0115] (1) Add distilled water to a beaker, add corrosion inhibitor, and stir thoroughly to obtain solution B;

[0116] (2) Add an appropriate amount of fungicide to solution B, heat and stir thoroughly to obtain solution C;

[0117] (3) adding a surfactant to solution C, heating and stirring thoroughly to obtain solution D;

[0118] (4) Add the aqueous portion of the lubricating additive to solution E, and heat and stir thoroughly to obtain solution F. The aqueous phase is thus prepared.

[0119] oil phase

[0120] (1) Add an appropriate amount of base oil to a beaker, add an emulsifier, and heat and stir thoroughly to obtain solution A';

[0121] (2) adding the remaining raw materials (except the fermented oil) to solution A and heating and stirring thoroughly to obtain solution B';

[0122] (3) Add the fermented oil to solution B', heat and stir thoroughly to obtain solution C'. The oil phase is prepared.

[0123] Oil and water mixing

[0124] (1) Slowly add the oil phase to the water phase and stir until the solution is clear to obtain the cutting fluid stock solution;

[0125] (2) Dilute the original solution 20 times with distilled water to obtain the cutting fluid dilution solution.

[0126] The method for preparing an environmentally friendly metal cutting fluid comprises the following steps:

[0127] Aqueous phase preparation

[0128] (1) Add distilled water to a beaker, add corrosion inhibitor, and stir thoroughly to obtain solution B;

[0129] (2) Add an appropriate amount of fungicide to solution B, heat and stir thoroughly to obtain solution C;

[0130] (3) adding a surfactant to solution C, heating and stirring thoroughly to obtain solution D;

[0131] (4) Add the aqueous portion of the lubricating additive to solution E, and heat and stir thoroughly to obtain solution F. The aqueous phase is thus prepared.

[0132] oil phase

[0133] (1) Add an appropriate amount of base oil to a beaker, add an emulsifier, and heat and stir thoroughly to obtain solution A';

[0134] (2) adding the remaining raw materials (except the fermented oil) to solution A and heating and stirring thoroughly to obtain solution B';

[0135] (3) Add the fermented oil to solution B', heat and stir thoroughly to obtain solution C'. The oil phase is prepared.

[0136] Oil and water mixing

[0137] (1) Slowly add the oil phase to the water phase and stir until the solution is clear to obtain the cutting fluid stock solution;

[0138] (2) Dilute the original solution 20 times with distilled water to obtain the cutting fluid dilution solution.

[0139] Example 3

[0140] The present embodiment provides an environmentally friendly metal cutting fluid, the raw materials for its preparation include: 13.5 parts of oil phase, 35 parts of water phase, 18 parts of surfactant, 5.5 parts of co-emulsifier, 1.4 parts of corrosion inhibitor, 0.4 parts of bactericide, 7 parts of lubricating additive, and 5 parts of polyalkylene glycol monomethacrylate.

[0141] The oil phase comprises fermented oil and base oil in a mass ratio of 3.5:10. The fermented oil is fermented linseed oil.

[0142] The preparation method of the fermented linseed oil is as follows:

[0143] The commercially available linseed oil and culture solution are mixed, inoculated with bacteria, and then fermented, filtered and centrifuged to obtain the upper oily substance, and then the water is evaporated at a constant temperature at medium and low temperature to obtain the dried fermented linseed oil.

[0144] The culture medium contains 20 g / L glucose, 5 g / L malt extract, 5 g / L yeast extract, and 1 L water; the culture medium is fermented at a temperature of 28°C for 24 hours. 31188. The inoculation amount of the strain is 6 vol%; then centrifugal separation is performed to obtain the oil phase of dragon's blood fermented oil. The mass ratio of linseed oil to culture solution is 1:10.

[0145] The surfactant comprises polyethylene glycol PEG-6000, triethanolamine oleate, and octylphenol polyoxyethylene ether, and the mass ratio is 5:3:2.

[0146] The co-emulsifier is Solvay Geronol-EW01.

[0147] The corrosion inhibitor comprises a non-phosphorus aluminum corrosion inhibitor and benzotriazole, and the mass ratio is 1:1.

[0148] The bactericide is benzisothiazolinone.

[0149] The organic phosphate extreme pressure agent includes diisooctyl benzyl phosphate, Notai Chemical water-soluble polyether ester LYCO-S264, and chlorinated paraffin T301 (Jinzhou Shengbang Petrochemical Co., Ltd.); and the mass ratio is 0.1:1.5:8.4.

[0150] The method for preparing an environmentally friendly metal cutting fluid comprises the following steps:

[0151] Aqueous phase preparation

[0152] (1) Add distilled water to a beaker, add corrosion inhibitor, and stir thoroughly to obtain solution B;

[0153] (2) Add an appropriate amount of fungicide to solution B, heat and stir thoroughly to obtain solution C;

[0154] (3) adding a surfactant to solution C, heating and stirring thoroughly to obtain solution D;

[0155] (4) Add the aqueous portion of the lubricating additive to solution E, and heat and stir thoroughly to obtain solution F. The aqueous phase is thus prepared.

[0156] oil phase

[0157] (1) Add an appropriate amount of base oil to a beaker, add an emulsifier, and heat and stir thoroughly to obtain solution A';

[0158] (2) adding the remaining raw materials (except the fermented oil) to solution A and heating and stirring thoroughly to obtain solution B';

[0159] (3) Add the fermented oil to solution B', heat and stir thoroughly to obtain solution C'. The oil phase is prepared.

[0160] Oil and water mixing

[0161] (1) Slowly add the oil phase to the water phase and stir until the solution is clear to obtain the cutting fluid stock solution;

[0162] (2) Dilute the original solution 20 times with distilled water to obtain the cutting fluid dilution solution.

[0163] The method for preparing an environmentally friendly metal cutting fluid comprises the following steps:

[0164] Aqueous phase preparation

[0165] (1) Add distilled water to a beaker, add corrosion inhibitor, and stir thoroughly to obtain solution B;

[0166] (2) Add an appropriate amount of fungicide to solution B, heat and stir thoroughly to obtain solution C;

[0167] (3) adding a surfactant to solution C, heating and stirring thoroughly to obtain solution D;

[0168] (4) Add the aqueous portion of the lubricating additive to solution E, and heat and stir thoroughly to obtain solution F. The aqueous phase is thus prepared.

[0169] oil phase

[0170] (1) Add an appropriate amount of base oil to a beaker, add an emulsifier, and heat and stir thoroughly to obtain solution A';

[0171] (2) adding the remaining raw materials (except the fermented oil) to solution A and heating and stirring thoroughly to obtain solution B';

[0172] (3) Add the fermented oil to solution B', heat and stir thoroughly to obtain solution C'. The oil phase is prepared.

[0173] Oil and water mixing

[0174] (1) Slowly add the oil phase to the water phase and stir until the solution is clear to obtain the cutting fluid stock solution;

[0175] (2) Dilute the original solution 20 times with distilled water to obtain the cutting fluid dilution solution.

[0176] Example 4

[0177] The present embodiment provides an environmentally friendly metal cutting fluid, the raw materials for its preparation include: 13.5 parts of oil phase, 35 parts of water phase, 18 parts of surfactant, 5.5 parts of co-emulsifier, 1.4 parts of corrosion inhibitor, 0.4 parts of bactericide, and 7 parts of lubricating additive.

[0178] The oil phase comprises fermented oil and base oil in a mass ratio of 3.5:10. The fermented oil is fermented tung oil and fermented linseed oil in a mass ratio of 2:1.5.

[0179] The preparation method of the fermented tung oil is as follows:

[0180] The commercially available tung oil and culture solution are mixed, and then the bacteria are inoculated. After fermentation, the upper layer of oil is obtained by filtering and centrifugation, and then the water is evaporated at a constant temperature at medium and low temperature to obtain dried fermented tung oil.

[0181] The culture medium contains 20 g / L glucose, 5 g / L malt extract, 5 g / L yeast extract, and 1 L water; the culture medium is fermented at a temperature of 28°C for 24 hours. 31188. The inoculation amount of the strain is 6 vol%; then centrifugal separation is performed to obtain the oil phase of the fermented dragon's blood oil. The mass ratio of tung oil to the culture solution is 1:10.

[0182] In the present invention, the preparation method of the fermented linseed oil is the same as that of the fermented tung oil.

[0183] The surfactant comprises polyethylene glycol PEG-6000, triethanolamine oleate, and octylphenol polyoxyethylene ether, and the mass ratio is 5:3:2.

[0184] The co-emulsifier is Solvay Geronol-EW01.

[0185] The corrosion inhibitor comprises a non-phosphorus aluminum corrosion inhibitor and benzotriazole, and the mass ratio is 1:1.

[0186] The bactericide is benzisothiazolinone.

[0187] The organic phosphate extreme pressure agent includes diisooctyl benzyl phosphate, Notai Chemical water-soluble polyether ester LYCO-S264, and chlorinated paraffin T301 (Jinzhou Shengbang Petrochemical Co., Ltd.); and the mass ratio is 0.1:1.5:8.4.

[0188] The method for preparing an environmentally friendly metal cutting fluid comprises the following steps:

[0189] Aqueous phase preparation

[0190] (1) Add distilled water to a beaker, add corrosion inhibitor, and stir thoroughly to obtain solution B;

[0191] (2) Add an appropriate amount of fungicide to solution B, heat and stir thoroughly to obtain solution C;

[0192] (3) adding a surfactant to solution C, heating and stirring thoroughly to obtain solution D;

[0193] (4) Add the aqueous portion of the lubricating additive to solution E, and heat and stir thoroughly to obtain solution F. The aqueous phase is thus prepared.

[0194] oil phase

[0195] (1) Add an appropriate amount of base oil to a beaker, add an emulsifier, and heat and stir thoroughly to obtain solution A';

[0196] (2) adding the remaining raw materials (except the fermented oil) to solution A and heating and stirring thoroughly to obtain solution B';

[0197] (3) Add the fermented oil to solution B', heat and stir thoroughly to obtain solution C'. The oil phase is prepared.

[0198] Oil and water mixing

[0199] (1) Slowly add the oil phase to the water phase and stir until the solution is clear to obtain the cutting fluid stock solution;

[0200] (2) Dilute the original solution 20 times with distilled water to obtain the cutting fluid dilution solution.

[0201] The method for preparing an environmentally friendly metal cutting fluid comprises the following steps:

[0202] Aqueous phase preparation

[0203] (1) Add distilled water to a beaker, add corrosion inhibitor, and stir thoroughly to obtain solution B;

[0204] (2) Add an appropriate amount of fungicide to solution B, heat and stir thoroughly to obtain solution C;

[0205] (3) adding a surfactant to solution C, heating and stirring thoroughly to obtain solution D;

[0206] (4) Add the aqueous portion of the lubricating additive to solution E, and heat and stir thoroughly to obtain solution F. The aqueous phase is thus prepared.

[0207] oil phase

[0208] (1) Add an appropriate amount of base oil to a beaker, add an emulsifier, and heat and stir thoroughly to obtain solution A';

[0209] (2) adding the remaining raw materials (except the fermented oil) to solution A and heating and stirring thoroughly to obtain solution B';

[0210] (3) Add the fermented oil to solution B', heat and stir thoroughly to obtain solution C'. The oil phase is prepared.

[0211] Oil and water mixing

[0212] (1) Slowly add the oil phase to the water phase and stir until the solution is clear to obtain the cutting fluid stock solution;

[0213] (2) Dilute the original solution 20 times with distilled water to obtain the cutting fluid dilution solution.

[0214] Example 5

[0215] The present embodiment provides an environmentally friendly metal cutting fluid, the raw materials for its preparation include: 13.5 parts of oil phase, 35 parts of water phase, 18 parts of surfactant, 5.5 parts of co-emulsifier, 1.4 parts of corrosion inhibitor, 0.4 parts of bactericide, 7 parts of lubricating additive, and 5 parts of polyalkylene glycol monomethacrylate.

[0216] The oil phase comprises fermented oil and base oil in a mass ratio of 3.5:10. The fermented oil is fermented tung oil and fermented linseed oil in a mass ratio of 2:1.5.

[0217] The preparation method of the fermented tung oil is as follows:

[0218] The commercially available tung oil and culture solution are mixed, and then the bacteria are inoculated. After fermentation, the upper layer of oil is obtained by filtering and centrifugation, and then the water is evaporated at a constant temperature at medium and low temperature to obtain dried fermented tung oil.

[0219] The culture medium contains 20 g / L glucose, 5 g / L malt extract, 5 g / L yeast extract, and 1 L water; the culture medium is fermented at a temperature of 28°C for 24 hours. 31188. The inoculation amount of the strain is 6 vol%; then centrifugal separation is performed to obtain the oil phase of the fermented dragon's blood oil. The mass ratio of tung oil to culture solution is 1:10.

[0220] In the present invention, the preparation method of the fermented linseed oil is the same as that of the fermented tung oil.

[0221] The surfactant comprises polyethylene glycol PEG-6000, triethanolamine oleate, and octylphenol polyoxyethylene ether, and the mass ratio is 5:3:2.

[0222] The co-emulsifier is Solvay Geronol-ME / 01.

[0223] The corrosion inhibitor comprises a non-phosphorus aluminum corrosion inhibitor and benzotriazole, and the mass ratio is 1:1.

[0224] The bactericide is benzisothiazolinone.

[0225] The organic phosphate extreme pressure agent includes diisooctyl benzyl phosphate, Notai Chemical water-soluble polyether ester LYCO-S264, and chlorinated paraffin T301 (Jinzhou Shengbang Petrochemical Co., Ltd.); and the mass ratio is 0.1:1.5:8.4.

[0226] The method for preparing an environmentally friendly metal cutting fluid comprises the following steps:

[0227] Aqueous phase preparation

[0228] (1) Add distilled water to a beaker, add corrosion inhibitor, and stir thoroughly to obtain solution B;

[0229] (2) Add an appropriate amount of fungicide to solution B, heat and stir thoroughly to obtain solution C;

[0230] (3) adding a surfactant to solution C, heating and stirring thoroughly to obtain solution D;

[0231] (4) Add the aqueous portion of the lubricating additive to solution E, and heat and stir thoroughly to obtain solution F. The aqueous phase is thus prepared.

[0232] oil phase

[0233] (1) Add an appropriate amount of base oil to a beaker, add an emulsifier, and heat and stir thoroughly to obtain solution A';

[0234] (2) adding the remaining raw materials (except the fermented oil) to solution A and heating and stirring thoroughly to obtain solution B';

[0235] (3) Add the fermented oil to solution B', heat and stir thoroughly to obtain solution C'. The oil phase is prepared.

[0236] Oil and water mixing

[0237] (1) Slowly add the oil phase to the water phase and stir until the solution is clear to obtain the cutting fluid stock solution;

[0238] (2) Dilute the original solution 20 times with distilled water to obtain the cutting fluid dilution solution.

[0239] The method for preparing an environmentally friendly metal cutting fluid comprises the following steps:

[0240] Aqueous phase preparation

[0241] (1) Add distilled water to a beaker, add corrosion inhibitor, and stir thoroughly to obtain solution B;

[0242] (2) Add an appropriate amount of fungicide to solution B, heat and stir thoroughly to obtain solution C;

[0243] (3) adding a surfactant to solution C, heating and stirring thoroughly to obtain solution D;

[0244] (4) Add the aqueous portion of the lubricating additive to solution E, and heat and stir thoroughly to obtain solution F. The aqueous phase is thus prepared.

[0245] oil phase

[0246] (1) Add an appropriate amount of base oil to a beaker, add an emulsifier, and heat and stir thoroughly to obtain solution A';

[0247] (2) adding the remaining raw materials (except the fermented oil) to solution A and heating and stirring thoroughly to obtain solution B';

[0248] (3) Add the fermented oil to solution B', heat and stir thoroughly to obtain solution C'. The oil phase is prepared.

[0249] Oil and water mixing

[0250] (1) Slowly add the oil phase to the water phase and stir until the solution is clear to obtain the cutting fluid stock solution;

[0251] (2) Dilute the original solution 20 times with distilled water to obtain the cutting fluid dilution solution.

[0252] Example 6

[0253] The present embodiment provides an environmentally friendly metal cutting fluid, the raw materials for its preparation include: 13.5 parts of oil phase, 35 parts of water phase, 18 parts of surfactant, 5.5 parts of co-emulsifier, 1.4 parts of corrosion inhibitor, 0.4 parts of bactericide, 7 parts of lubricating additive, and 5 parts of polyalkylene glycol monomethacrylate.

[0254] The oil phase comprises fermented oil and base oil in a mass ratio of 3.5:10. The fermented oil is fermented tung oil and fermented linseed oil in a mass ratio of 2:1.5.

[0255] The preparation method of the fermented tung oil is as follows:

[0256] The commercially available tung oil and culture solution are mixed, and then the bacteria are inoculated. After fermentation, the upper layer of oil is obtained by filtering and centrifugation, and then the water is evaporated at a constant temperature at medium and low temperature to obtain dried fermented tung oil.

[0257] The culture medium contains 20 g / L glucose, 5 g / L malt extract, 5 g / L yeast extract, and 1 L water; the culture medium is fermented at a temperature of 28°C for 24 hours. 31188. The inoculation amount of the strain is 6 vol%; then centrifugal separation is performed to obtain the oil phase of the fermented dragon's blood oil. The mass ratio of tung oil to culture solution is 1:10.

[0258] In the present invention, the preparation method of the fermented linseed oil is the same as that of the fermented tung oil.

[0259] The surfactant comprises polyethylene glycol PEG-6000, triethanolamine oleate, and octylphenol polyoxyethylene ether, and the mass ratio is 5:3:2.

[0260] The co-emulsifier is Solvay Geronol-EW01.

[0261] The corrosion inhibitor comprises a non-phosphorus aluminum corrosion inhibitor and benzotriazole, and the mass ratio is 1:1.

[0262] The bactericide is benzisothiazolinone.

[0263] The organic phosphate extreme pressure agent includes Notai Chemical water-soluble polyether ester LYCO-S264 and chlorinated paraffin T301 (Jinzhou Shengbang Petrochemical Co., Ltd.); and the mass ratio is 1.5:8.4.

[0264] The method for preparing an environmentally friendly metal cutting fluid comprises the following steps:

[0265] Aqueous phase preparation

[0266] (1) Add distilled water to a beaker, add corrosion inhibitor, and stir thoroughly to obtain solution B;

[0267] (2) Add an appropriate amount of fungicide to solution B, heat and stir thoroughly to obtain solution C;

[0268] (3) adding a surfactant to solution C, heating and stirring thoroughly to obtain solution D;

[0269] (4) Add the aqueous portion of the lubricating additive to solution E, and heat and stir thoroughly to obtain solution F. The aqueous phase is thus prepared.

[0270] oil phase

[0271] (1) Add an appropriate amount of base oil to a beaker, add an emulsifier, and heat and stir thoroughly to obtain solution A';

[0272] (2) adding the remaining raw materials (except the fermented oil) to solution A and heating and stirring thoroughly to obtain solution B';

[0273] (3) Add the fermented oil to solution B', heat and stir thoroughly to obtain solution C'. The oil phase is prepared.

[0274] Oil and water mixing

[0275] (1) Slowly add the oil phase to the water phase and stir until the solution is clear to obtain the cutting fluid stock solution;

[0276] (2) Dilute the original solution 20 times with distilled water to obtain the cutting fluid dilution solution.

[0277] The method for preparing an environmentally friendly metal cutting fluid comprises the following steps:

[0278] Aqueous phase preparation

[0279] (1) Add distilled water to a beaker, add corrosion inhibitor, and stir thoroughly to obtain solution B;

[0280] (2) Add an appropriate amount of fungicide to solution B, heat and stir thoroughly to obtain solution C;

[0281] (3) adding a surfactant to solution C, heating and stirring thoroughly to obtain solution D;

[0282] (4) Add the aqueous portion of the lubricating additive to solution E, and heat and stir thoroughly to obtain solution F. The aqueous phase is thus prepared.

[0283] oil phase

[0284] (1) Add an appropriate amount of base oil to a beaker, add an emulsifier, and heat and stir thoroughly to obtain solution A';

[0285] (2) adding the remaining raw materials (except the fermented oil) to solution A and heating and stirring thoroughly to obtain solution B';

[0286] (3) Add the fermented oil to solution B', heat and stir thoroughly to obtain solution C'. The oil phase is prepared.

[0287] Oil and water mixing

[0288] (1) Slowly add the oil phase to the water phase and stir until the solution is clear to obtain the cutting fluid stock solution;

[0289] (2) Dilute the original solution 20 times with distilled water to obtain the cutting fluid dilution solution.

[0290] Example 7

[0291] The present embodiment provides an environmentally friendly metal cutting fluid, the raw materials for its preparation include: 13.5 parts of oil phase, 35 parts of water phase, 18 parts of surfactant, 5.5 parts of co-emulsifier, 1.4 parts of corrosion inhibitor, 0.4 parts of bactericide, 7 parts of lubricating additive, and 5 parts of polyalkylene glycol monomethacrylate.

[0292] The oil phase comprises fermented oil and base oil in a mass ratio of 3.5:10. The fermented oil is fermented tung oil and fermented linseed oil in a mass ratio of 2:1.5.

[0293] The preparation method of the fermented tung oil is as follows:

[0294] The commercially available tung oil and culture solution are mixed, and then the bacteria are inoculated. After fermentation, the upper layer of oil is obtained by filtering and centrifugation, and then the water is evaporated at a constant temperature at medium and low temperature to obtain dried fermented tung oil.

[0295] The culture medium contains 20 g / L glucose, 5 g / L malt extract, 5 g / L yeast extract, and 1 L water; the culture medium is fermented at a temperature of 28°C for 24 hours. 31188. The inoculation amount of the strain is 6 vol%; then centrifugal separation is performed to obtain the oil phase of the fermented dragon's blood oil. The mass ratio of tung oil to culture solution is 1:10.

[0296] In the present invention, the preparation method of the fermented linseed oil is the same as that of the fermented tung oil.

[0297] The surfactant comprises polyethylene glycol PEG-6000, triethanolamine oleate, and octylphenol polyoxyethylene ether, and the mass ratio is 5:3:2.

[0298] The co-emulsifier is Solvay Geronol-EW01.

[0299] The corrosion inhibitor comprises a non-phosphorus aluminum corrosion inhibitor and benzotriazole, and the mass ratio is 1:1.

[0300] The bactericide is benzisothiazolinone.

[0301] The organic phosphate extreme pressure agent includes diisooctyl benzyl phosphate, Notai Chemical water-soluble polyether ester LYCO-S264, and chlorinated paraffin T301 (Jinzhou Shengbang Petrochemical Co., Ltd.); and the mass ratio is 0.1:1.5:8.4.

[0302] The method for preparing an environmentally friendly metal cutting fluid comprises the following steps:

[0303] Aqueous phase preparation

[0304] (1) Add distilled water to a beaker, add corrosion inhibitor, and stir thoroughly to obtain solution B;

[0305] (2) Add an appropriate amount of fungicide to solution B, heat and stir thoroughly to obtain solution C;

[0306] (3) adding a surfactant to solution C, heating and stirring thoroughly to obtain solution D;

[0307] (4) Add the aqueous portion of the lubricating additive to solution E, and heat and stir thoroughly to obtain solution F. The aqueous phase is thus prepared.

[0308] oil phase

[0309] (1) Add an appropriate amount of base oil to a beaker, add an emulsifier, and heat and stir thoroughly to obtain solution A';

[0310] (2) adding the remaining raw materials (except the fermented oil) to solution A and heating and stirring thoroughly to obtain solution B';

[0311] (3) Add the fermented oil to solution B', heat and stir thoroughly to obtain solution C'. The oil phase is prepared.

[0312] Oil and water mixing

[0313] (1) Slowly add the oil phase to the water phase and stir until the solution is clear to obtain the cutting fluid stock solution;

[0314] (2) Dilute the original solution 20 times with distilled water to obtain the cutting fluid dilution solution.

[0315] The method for preparing an environmentally friendly metal cutting fluid comprises the following steps:

[0316] Preparation of aqueous phase: Mix all aqueous ingredients with surfactants and emulsifiers;

[0317] Oil phase: Mix all oily ingredients together;

[0318] Oil and water mixing

[0319] (1) Slowly add the oil phase to the water phase and stir until the solution is clear to obtain the cutting fluid stock solution;

[0320] (2) Dilute the original solution 20 times with distilled water to obtain the cutting fluid dilution solution.

[0321] Example 8

[0322] The present embodiment provides an environmentally friendly metal cutting fluid, the raw materials for its preparation include: 13.5 parts of oil phase, 35 parts of water phase, 18 parts of surfactant, 5.5 parts of co-emulsifier, 1.4 parts of corrosion inhibitor, 0.4 parts of bactericide, 7 parts of lubricating additive, and 5 parts of polyalkylene glycol monomethacrylate.

[0323] The oil phase comprises fermented oil and base oil in a mass ratio of 3.5:10. The fermented oil is fermented tung oil and fermented linseed oil in a mass ratio of 2:1.5.

[0324] The preparation method of the fermented tung oil is as follows:

[0325] The commercially available tung oil and culture solution are mixed, and then the bacteria are inoculated. After fermentation, the upper layer of oil is obtained by filtering and centrifugation, and then the water is evaporated at a constant temperature at medium and low temperature to obtain dried fermented tung oil.

[0326] The culture medium contains 20 g / L glucose, 5 g / L malt extract, 5 g / L yeast extract, and 1 L water; the culture medium is fermented at a temperature of 28°C for 24 hours. 31188. The inoculation amount of the strain is 6 vol%; then centrifugal separation is performed to obtain the oil phase of the fermented dragon's blood oil. The mass ratio of tung oil to culture solution is 1:10.

[0327] In the present invention, the preparation method of the fermented linseed oil is the same as that of the fermented tung oil.

[0328] The surfactant comprises polyethylene glycol PEG-6000, triethanolamine oleate, and octylphenol polyoxyethylene ether, and the mass ratio is 5:3:2.

[0329] The co-emulsifier is AC 28 which is tall oil amide.

[0330] The corrosion inhibitor comprises a non-phosphorus aluminum corrosion inhibitor and benzotriazole, and the mass ratio is 1:1.

[0331] The bactericide is benzisothiazolinone.

[0332] The organic phosphate extreme pressure agent includes diisooctyl benzyl phosphate, Notai Chemical water-soluble polyether ester LYCO-S264, and chlorinated paraffin T301 (Jinzhou Shengbang Petrochemical Co., Ltd.); and the mass ratio is 0.1:1.5:8.4.

[0333] The method for preparing an environmentally friendly metal cutting fluid comprises the following steps:

[0334] Aqueous phase preparation

[0335] (1) Add distilled water to a beaker, add corrosion inhibitor, and stir thoroughly to obtain solution B;

[0336] (2) Add an appropriate amount of fungicide to solution B, heat and stir thoroughly to obtain solution C;

[0337] (3) adding a surfactant to solution C, heating and stirring thoroughly to obtain solution D;

[0338] (4) Add the aqueous portion of the lubricating additive to solution E, and heat and stir thoroughly to obtain solution F. The aqueous phase is thus prepared.

[0339] oil phase

[0340] (1) Add an appropriate amount of base oil to a beaker, add an emulsifier, and heat and stir thoroughly to obtain solution A';

[0341] (2) adding the remaining raw materials (except the fermented oil) to solution A and heating and stirring thoroughly to obtain solution B';

[0342] (3) Add the fermented oil to solution B', heat and stir thoroughly to obtain solution C'. The oil phase is prepared.

[0343] Oil and water mixing

[0344] (1) Slowly add the oil phase to the water phase and stir until the solution is clear to obtain the cutting fluid stock solution;

[0345] (2) Dilute the original solution 20 times with distilled water to obtain the cutting fluid dilution solution.

[0346] The method for preparing an environmentally friendly metal cutting fluid comprises the following steps:

[0347] Aqueous phase preparation

[0348] (1) Add distilled water to a beaker, add corrosion inhibitor, and stir thoroughly to obtain solution B;

[0349] (2) Add an appropriate amount of fungicide to solution B, heat and stir thoroughly to obtain solution C;

[0350] (3) adding a surfactant to solution C, heating and stirring thoroughly to obtain solution D;

[0351] (4) Add the aqueous portion of the lubricating additive to solution E, and heat and stir thoroughly to obtain solution F. The aqueous phase is thus prepared.

[0352] oil phase

[0353] (1) Add an appropriate amount of base oil to a beaker, add an emulsifier, and heat and stir thoroughly to obtain solution A';

[0354] (2) adding the remaining raw materials (except the fermented oil) to solution A and heating and stirring thoroughly to obtain solution B';

[0355] (3) Add the fermented oil to solution B', heat and stir thoroughly to obtain solution C'. The oil phase is prepared.

[0356] Oil and water mixing

[0357] (1) Slowly add the oil phase to the water phase and stir until the solution is clear to obtain the cutting fluid stock solution;

[0358] (2) Dilute the original solution 20 times with distilled water to obtain the cutting fluid dilution solution.

[0359] Example 9

[0360] The present embodiment provides an environmentally friendly metal cutting fluid, the raw materials for its preparation include: 13.5 parts of oil phase, 35 parts of water phase, 18 parts of surfactant, 5.5 parts of co-emulsifier, 1.4 parts of corrosion inhibitor, 0.4 parts of bactericide, 7 parts of lubricating additive, and 5 parts of polyalkylene glycol monomethacrylate.

[0361] The oil phase comprises tung oil, linseed oil and base oil in a mass ratio of 2:1.5:10.

[0362] The surfactant comprises polyethylene glycol PEG-6000, triethanolamine oleate, and octylphenol polyoxyethylene ether, and the mass ratio is 5:3:2.

[0363] The co-emulsifier is Solvay Geronol-ME / 01.

[0364] The corrosion inhibitor comprises a non-phosphorus aluminum corrosion inhibitor and benzotriazole, and the mass ratio is 1:1.

[0365] The bactericide is benzisothiazolinone.

[0366] The organic phosphate extreme pressure agent includes water-soluble polyether ester LYCO-S264 produced by Notai Chemical and chlorinated paraffin T301 (Jinzhou Shengbang Petrochemical Co., Ltd.); and the mass ratio is 1.5:8.4.

[0367] The method for preparing an environmentally friendly metal cutting fluid comprises the following steps:

[0368] Aqueous phase preparation

[0369] (1) Add distilled water to a beaker, add corrosion inhibitor, and stir thoroughly to obtain solution B;

[0370] (2) Add an appropriate amount of fungicide to solution B, heat and stir thoroughly to obtain solution C;

[0371] (3) adding a surfactant to solution C, heating and stirring thoroughly to obtain solution D;

[0372] (4) Add the aqueous portion of the lubricating additive to solution E, and heat and stir thoroughly to obtain solution F. The aqueous phase is thus prepared.

[0373] oil phase

[0374] (1) Add an appropriate amount of base oil to a beaker, add an emulsifier, and heat and stir thoroughly to obtain solution A';

[0375] (2) adding the remaining raw materials (except the fermented oil) to solution A and heating and stirring thoroughly to obtain solution B';

[0376] (3) Add the fermented oil to solution B', heat and stir thoroughly to obtain solution C'. The oil phase is prepared.

[0377] Oil and water mixing

[0378] (1) Slowly add the oil phase to the water phase and stir until the solution is clear to obtain the cutting fluid stock solution;

[0379] (2) Dilute the original solution 20 times with distilled water to obtain the cutting fluid dilution solution.

[0380] The method for preparing an environmentally friendly metal cutting fluid comprises the following steps:

[0381] Aqueous phase preparation

[0382] (1) Add distilled water to a beaker, add corrosion inhibitor, and stir thoroughly to obtain solution B;

[0383] (2) Add an appropriate amount of fungicide to solution B, heat and stir thoroughly to obtain solution C;

[0384] (3) adding a surfactant to solution C, heating and stirring thoroughly to obtain solution D;

[0385] (4) Add the aqueous portion of the lubricating additive to solution E, and heat and stir thoroughly to obtain solution F. The aqueous phase is thus prepared.

[0386] oil phase

[0387] (1) tung oil, linseed oil and base oil are added to a beaker, and an emulsifier is added, and the mixture is heated and stirred to obtain a solution A';

[0388] (2) Add the remaining raw materials to solution A' and heat and stir thoroughly to obtain solution B'. The oil phase is prepared.

[0389] Oil and water mixing

[0390] (1) Slowly add the oil phase to the water phase and stir until the solution is clear to obtain the cutting fluid stock solution;

[0391] (2) Dilute the original solution 20 times with distilled water to obtain the cutting fluid dilution solution.

[0392] Performance Testing

[0393] Test 1: Corrosion test

[0394] The test piece size is (50*25*3) mm. Cast aluminum test piece: the material complies with GB / T 3190; cast iron test piece: the material complies with GB / T 718; copper test piece: the material complies with GB / T5213. Place the metal test piece in a 250mL beaker and place different metal test pieces in different beakers. The 5% cutting fluid dilution completely immerses the metal test piece. A glass cover must be placed on each beaker. Place the beaker in a covered constant temperature water bath pot, keep the water bath temperature at 55℃±2℃, and test the cast iron, copper, and cast aluminum metal test pieces for 24h, 8h, and 8h respectively. Finally, take out the metal test piece for inspection.

[0395] Test 2: Cutting fluid lubrication performance experiment

[0396] The friction and wear test was conducted using a ball-disc friction and wear tester manufactured by Jinan Experimental Machine Factory. The speed of the equipment was set to 1200rpm, the positive pressure was set to 420N, and the sliding friction coefficient generated by the rotation of the disc on the steel ball was input into the computer through a sensor. The computer read out the data every 1 second, counted for 480 seconds, and then calculated the average value as the friction coefficient under the pressure.

[0397] Test 3 Transparency Test

[0398] Pour 5% cutting dilution into a 250mL beaker, keep the entire beaker, especially the bottom, clean and transparent, and the height of the dilution in the beaker is about 75mm. Place a 5W, 220V bulb at the bottom of the beaker and observe the bulb from above the liquid surface: if the filament is clearly discernible, the cutting fluid is assessed as transparent; if the filament is not discernible, the cutting fluid is assessed as opaque.

[0399] Test 4: Storage stability test

[0400] Pour 50mL of the cutting fluid concentrate into a 100mL stoppered measuring cylinder, place it in a forced air drying oven at a constant temperature of about 70°C for 5 hours, then take it out and place it at room temperature for 3 hours, then freeze it at a low temperature of about -12°C for 24 hours, take it out and place it at room temperature for 1 hour, and check its properties after it stabilizes.

[0401] Test 5: Defoaming test

[0402] Pour 70ml of 5% dilution into a 100ml stoppered measuring cylinder, cover the bottle with the stopper, and control the shaking frequency to 100-120 times per minute for one minute with a shaking amplitude of about 30cm. Leave it at room temperature for 10 minutes, and then observe the residual volume of foam in the stoppered measuring cylinder. If it is less than or equal to 2ml, the defoaming property of the cutting fluid is qualified.

[0403] Test 6: High and low temperature storage test method: Divide the cutting fluid to be tested into two portions, 100 mL each, and cover both with plastic wrap; place one portion in a refrigerator (4°C) and the other portion in an oven (50°C); take the samples out of the refrigerator and oven after two hours, and observe whether the samples are stratified or turbid under different temperature conditions.

[0404] Test 7: Aluminum protection ability test method: dilute the cutting fluid to be tested to 10% with pure water in a clean beaker, immerse the polished bright surface 6 series aluminum sheet completely in the diluted solution, cover the surface of the beaker with plastic wrap, and let it stand at 25℃ for 4h; take out the aluminum sheet, rinse it with pure water, and observe the surface of the test metal sheet to determine the grade; aluminum protection ability is divided into 3 grades, glossy as new: Grade A; slightly darkened: Grade B; moderately darkened: Grade C.

[0405] Table 1 Performance test results

[0406]

[0407]

[0408]

[0409] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An environmentally friendly metal cutting fluid, characterized in that: The raw materials for its preparation include: oil phase, water phase, surfactant, co-emulsifier, corrosion inhibitor, bactericide and lubricating additive.

2. An environmentally friendly metal cutting fluid according to claim 1, characterized in that: Calculated by weight, the raw materials for its preparation include: 5-15 parts of oil phase, 30-40 parts of water phase, 10-20 parts of surfactant, 5-10 parts of emulsifier, 0.1-1.5 parts of corrosion inhibitor, 0.1-0.5 parts of bactericide, and 5-10 parts of lubricating additive.

3. The environmentally friendly metal cutting fluid according to claim 1, characterized in that: Calculated by weight, the raw materials for its preparation include: 13.5 parts of oil phase, 35 parts of water phase, 10-20 parts of surfactant, 5.5 parts of co-emulsifier, 1.4 parts of corrosion inhibitor, 0.4 parts of bactericide, and 7 parts of lubricating additive.

4. An environmentally friendly metal cutting fluid according to any one of claims 1 to 3, characterized in that: The oil phase comprises fermented oil and base oil.

5. The environmentally friendly metal cutting fluid according to claim 4, characterized in that: The mass ratio of the fermented oil to the base oil is (2.5-5.5):(8-11).

6. The environmentally friendly metal cutting fluid according to claim 4, characterized in that: The mass ratio of the fermented oil to the base oil is 3.5:

10.

7. An environmentally friendly metal cutting fluid according to any one of claims 1 to 3, characterized in that: The surfactant includes anionic surfactants and nonionic surfactants.

8. An environmentally friendly metal cutting fluid according to any one of claims 1 to 3, characterized in that: The preparation raw materials also include polyalkylene glycol compounds.

9. A method for preparing an environmentally friendly metal cutting fluid according to any one of claims 1 to 8, characterized in that: Here are the steps: Aqueous phase preparation (1) Add distilled water to a beaker, add corrosion inhibitor, and stir thoroughly to obtain solution B; (2) Add an appropriate amount of fungicide to solution B, heat and stir thoroughly to obtain solution C; (3) adding a surfactant to solution C, heating and stirring thoroughly to obtain solution D; (4) Add the aqueous portion of the lubricating additive to solution E, and heat and stir thoroughly to obtain solution F. The aqueous phase is thus prepared. oil phase (1) Add an appropriate amount of base oil to a beaker, add an emulsifier, and heat and stir thoroughly to obtain solution A'; (2) adding the remaining raw materials (except the fermented oil) to solution A and heating and stirring thoroughly to obtain solution B'; (3) adding the fermented oil to solution B', heating and stirring thoroughly to obtain solution C', and the oil phase is prepared; Oil and water mixing (1) Slowly add the oil phase to the water phase and stir until the solution is clear to obtain the cutting fluid stock solution; (2) Dilute the original solution 20 times with distilled water to obtain the cutting fluid dilution solution.

10. An environmentally friendly metal cutting fluid according to any one of claims 1 to 8, characterized in that: Used in the field of cutting fluid technology.

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