Rust-proof volatile punching and shearing oil and preparation method thereof

Abstract

The invention belongs to the technical field of lubricating oil, and particularly relates to antirust volatile punching and shearing oil and a preparation method thereof. The punching and shearing oil is prepared from an oiling agent, polysaccharide, cellulose, inorganic nano dispersion liquid, monoimidazole ester hydrochloride, a corrosion inhibitor, silica sol, a surfactant, a defoaming agent and water. The punching shear fluid provided by the invention has excellent lubrication wear resistance and rust resistance.

Description

Technical Field

[0001] The invention belongs to the technical field of lubricating oils, and in particular relates to an anti-rust volatile punching and shearing oil and a preparation method thereof. Background Art

[0002] "Punching oil" is also called cutting oil or cooling lubricant. It usually refers to a special liquid that plays a role in lubrication, cooling, cleaning, etc. during metal stamping, shearing and other processing processes. Specifically, in the punching and shearing process, punching and shearing oil mainly plays a role in lubrication and cooling. It can reduce the friction between the metal and the mold, reduce the temperature, prevent damage to the metal surface, and also take away the heat and metal chips generated during processing; in the cutting process, it provides lubrication for tools and workpieces, reduces friction, reduces cutting force, thereby reducing tool wear and improving surface quality, effectively cools workpieces and tools, and reduces thermal deformation and thermal cracks. In the process of metal extrusion and stretching, punching and shearing oil acts as a lubricant to help reduce the friction between the metal and the mold, ensure smooth metal flow, and prevent cracks or defects on the metal surface. Therefore, the composition and application of punching and shearing oil are very critical and directly affect the processing effect, tool life and product quality. Punching and shearing oil is generally formulated with base oils such as mineral oil or synthetic oil and some additives (such as extreme pressure anti-wear agents, antioxidants, corrosion inhibitors, etc.).

[0003] Volatile lubricating oil has high volatility and can evaporate quickly during processing, reducing pollution to the processed workpiece. CN101880587A provides a volatile punching and shearing oil suitable for sheet metal stamping and shearing processing, which has mild and excellent volatility and rust prevention performance. The workpiece does not need to be cleaned after processing, avoiding deformation of the workpiece after processing and forming, thereby saving processing time and improving processing efficiency. However, the synthetic ester monoester in its components may not be ideal when used alone as an emulsifier, and has poor stability under high temperature conditions, so that the punching and shearing oil may lose its emulsifying ability or change its physical properties under long-term heating, affecting its use effect. Moreover, although the dearomatized solvent does not contain aromatic hydrocarbons, it still has an unpleasant odor when it evaporates. Summary of the invention

[0004] Room temperature in the present invention refers to "20-25°C".

[0005] The object of the present invention is to provide a rust-proof volatile punching and shearing oil with water as a volatile component and a preparation method thereof.

[0006] In a first aspect, the present invention provides an anti-rust volatile punching and shearing oil, which comprises: oil agent, polysaccharide, cellulose, inorganic nano-dispersion liquid, monoimidazole ester hydrochloride, corrosion inhibitor, silica sol, surfactant, defoaming agent and water.

[0007] The volatile punching and shearing oil in the present invention is based on water, has good biodegradability, reduces environmental pollution, meets the requirements of modern green environmental protection, and has a high specific heat capacity of water, which can more effectively take away the heat generated by friction, and is particularly suitable for high-temperature friction environments such as metal cutting and grinding. However, water is a weak electrolyte and will form a weak electric potential on the metal surface, and cannot form an effective boundary lubrication film, resulting in the extremely unstable friction process of the volatile water-based punching and shearing oil, and has a large friction coefficient, that is, the water-based punching and shearing oil has poor lubricity. However, the synergistic effect of the various components in the punching and shearing oil in the present invention can enable the punching and shearing oil to form an effective boundary lubrication film in the contact area during the friction process. At the same time, the synergistic effect of the various components with the monoimidazole hydrochloride and the corrosion inhibitor can better increase the excellent rust resistance of the punching and shearing oil to the metal when used.

[0008] As a preferred technical solution of the present invention, the punching and shearing oil includes, by mass fraction: 10-20% oil agent, 5-15% polysaccharide, 3-10% cellulose, 20-35% inorganic nano-dispersion, 2-6% monoimidazole hydrochloride, 0.5-5% corrosion inhibitor, 25-45% silica sol, 1-5% surfactant, 0.1-1% defoaming agent, and the balance is water.

[0009] As a preferred technical solution of the present invention, the punching and shearing oil includes, by mass fraction: 12-15% oil agent, 8-10% polysaccharide, 4-5% cellulose, 25-30% inorganic nano-dispersion, 3-4% monoimidazole hydrochloride, 1.5-2% corrosion inhibitor, 30-35% silica sol, 3-4% surfactant, 0.3-0.4% defoaming agent, and the balance is water.

[0010] In the present invention, the various components in the punching and shearing oil are controlled within the above range, so that the various components can better cooperate with each other and better achieve the effects of wear resistance and rust prevention.

[0011] As a preferred technical solution of the present invention, the preparation method of the oil comprises: in an inert atmosphere, octadecadienoic acid dimer, C8-C20 fatty acid ester, and octylphenol polyoxyethylene ether are mixed, then p-toluenesulfonic acid is added for contact reaction, then a dehydration reaction is carried out, and finally evaporation and concentration are carried out to obtain the oil.

[0012] The low-temperature performance of general volatile water-based punching and shearing oils is poor, and their wear resistance will decrease after being in a low-temperature environment for a period of time. The oil agent in the present invention uses general vegetable oil and also has good lubrication and wear resistance, but it cannot overcome the defect of poor low-temperature performance of existing volatile water-based punching and shearing oils. After being placed in a low-temperature environment for a period of time, its wear resistance decreases sharply. The oil agent prepared by the above-mentioned preparation method of the present invention is used as a component of punching and shearing oil, which can overcome the defect of poor low-temperature performance of existing volatile water-based punching and shearing oils. This may be because the oil agent prepared in the present invention has hydrophilic and lipophilic properties, and the oil agent and the surfactant cooperate with each other to make the punching and shearing oil have better stability, and can maintain excellent stability even in a low-temperature environment, and can better form an effective boundary lubrication film in the contact area during the friction process.

[0013] The inert atmosphere in the present invention can be any inert atmosphere in the art, such as nitrogen or argon.

[0014] As a preferred technical solution of the present invention, the mixing conditions include: temperature of 80-90° C. and time of 10-20 min.

[0015] As a preferred technical solution of the present invention, the conditions of the contact reaction include: temperature of 120-140° C. and time of 1-2 h.

[0016] As a preferred technical solution of the present invention, the conditions of the dehydration reaction include: vacuum degree of 500-1000 Pa, temperature of 85-100° C., and time of 40-50 min.

[0017] As a preferred technical solution of the present invention, the conditions for evaporation concentration include: temperature of 175-190° C. and time of 20-40 min.

[0018] The octadecadienoic acid dimer is formed by a chemical reaction between two ricinoleic acid molecules. The octadecadienoic acid dimer in the present invention can be obtained commercially, for example, from Shandong Poly Chemical Co., Ltd.

[0019] As a preferred technical solution of the present invention, the C8-C20 fatty acid ester is selected from C12-C14 fatty acid ester, more preferably C14 fatty acid ester, such as n-butyl myristate.

[0020] As a preferred technical solution of the present invention, the polymerization degree of the octylphenol polyoxyethylene ether is 4-50, preferably 10-20, and more preferably 10.

[0021] As a preferred technical solution of the present invention, the mass ratio of the octadecadienoic acid dimer to the C8-C20 fatty acid ester is 1:(0.7-0.9), preferably 1:(0.8-0.85).

[0022] As a preferred technical solution of the present invention, the mass ratio of the octadecadienoic acid dimer to octylphenol polyoxyethylene ether is 1:(1.2-1.8), preferably 1:(1.35-1.4).

[0023] As a preferred technical solution of the present invention, the mass ratio of the octadecadienoic acid dimer to p-toluenesulfonic acid is 1:(0.01-0.05), preferably 1:(0.02-0.03).

[0024] As a more preferred technical solution of the present invention, in a nitrogen atmosphere, octadecadienoic acid dimer, n-butyl tetradecanoate, and octylphenol polyoxyethylene ether (degree of polymerization is 10) in a mass ratio of 1: (0.8-0.85): (1.35-1.4) are mixed at 80-90° C. for 10-20 min, then p-toluenesulfonic acid (with a mass ratio of 0.02-0.03 to octadecadienoic acid dimer: 1) is added, and the reaction is carried out at 120-140° C. for 1-2 h, and then vacuum dehydration reaction is carried out at a vacuum degree of 500-1000 Pa and a temperature of 85-100° C. for 40-50 min, and finally evaporation concentration is carried out at 175-190° C. for 20-40 min to obtain an oil agent.

[0025] Polysaccharide is a high molecular compound formed by connecting multiple monosaccharides through glycosidic bonds. As a preferred technical solution of the present invention, the polysaccharide is selected from at least one of hydroxypropyl methyl guar gum powder, guar gum, xanthan gum, locust bean gum, carrageenan, kaempferia gum, konjac gum and gum arabic, preferably hydroxypropyl methyl guar gum powder.

[0026] The hydroxypropyl methyl guar gum powder in the present invention can be obtained commercially, for example, from Renqiu Mingqi Chemical Co., Ltd.

[0027] As a preferred technical solution of the present invention, the cellulose is selected from at least one of methyl cellulose, ethyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose and carboxymethyl hydroxyethyl cellulose, preferably carboxymethyl cellulose.

[0028] The carboxymethyl cellulose in the present invention can be obtained commercially, for example, from Renqiu Mingqi Chemical Co., Ltd.

[0029] The present invention has found that cellulose and polysaccharide are indispensable, and the lack of one component will affect the lubrication and anti-wear properties of the punching and shearing oil.

[0030] As a preferred technical solution of the present invention, the inorganic nano-dispersion liquid is selected from at least one of boron nitride nano-water dispersion liquid, tungsten disulfide water dispersion liquid and single-layer graphene water dispersion liquid, and is preferably a boron nitride nano-water dispersion liquid.

[0031] As a preferred technical solution of the present invention, the average flake size of the boron nitride nano-water dispersion is 80-200 nm, and the concentration is 0.1-0.2 mg / mL.

[0032] The boron nitride nano-water dispersion in the present invention can be obtained commercially, for example, from Jiangsu Xianfeng Nanomaterial Technology Co., Ltd.

[0033] Research has found that adding inorganic nano-dispersions, especially boron nitride nano-water dispersions, to the present invention can better increase the lubrication and anti-wear properties of punching and shearing oils.

[0034] As a preferred technical solution of the present invention, the corrosion inhibitor is selected from at least one of benzotriazole, 5-methylbenzotriazole phosphate ethanolamine salt, phosphate triethanolamine salt, borax and boric acid ethanolamine salt, preferably benzotriazole.

[0035] Silica sol, also known as colloidal silicon dioxide, is a colloidal solution composed of tiny silicon dioxide particles dispersed in water. As a preferred technical solution of the present invention, the average particle size of the silica sol is 5-10nm, the silicon dioxide content is 15-40wt%, and preferably the silicon dioxide content is 30-35wt%.

[0036] The silica sol in the present invention can be obtained commercially, for example, from Shandong Guohua Chemical Co., Ltd.

[0037] As a preferred technical solution of the present invention, the surfactant is selected from non-ionic surfactants.

[0038] As a preferred technical solution of the present invention, the nonionic surfactant is selected from polysorbates. The polysorbates that can be listed in the present invention include polysorbate 20, polysorbate 40, polysorbate 65 and polysorbate 80.

[0039] As a preferred technical solution of the present invention, the defoamer is selected from one or more of an organosilicon defoamer, a polyether defoamer, and a polyether-modified organosilicon defoamer.

[0040] As a preferred technical solution of the present invention, the defoamer is selected from polyether defoamers. The polyether defoamers that can be listed in the present invention include PD-142, PD-175, PD-186 and the like.

[0041] In a second aspect, the present invention provides a method for preparing the rust-proof volatile punching and shearing oil according to the first aspect, the preparation method comprising:

[0042] (1) Divide the water into two equal parts according to mass;

[0043] (2) taking a first portion of water and mixing it with an inorganic nano-dispersion liquid, a monoimidazole ester hydrochloride, a corrosion inhibitor, and a silica sol to obtain a first mixed material;

[0044] (3) taking a second portion of water and mixing it with the oil, polysaccharide, cellulose, and surfactant to obtain a second mixture;

[0045] (4) The first mixed material and the second mixed material are mixed for the third time, and then a defoaming agent is added and mixed continuously to obtain an anti-rust volatile punching and shearing oil.

[0046] The present invention studies that the rust-proof volatile punching and shearing oil prepared by the above-mentioned preparation method has a better rust-proof effect. This may be because the silica sol has an adsorption property and can adsorb monoimidazole hydrochloride and corrosion inhibitor after the first mixing, and finally the monoimidazole hydrochloride and corrosion inhibitor are better dispersed in the rust-proof volatile punching and shearing oil, thereby better exerting the rust-proof effect.

[0047] As a preferred technical solution of the present invention, the first mixing conditions include: room temperature, power of 300-500W, and processing time of 30-40min.

[0048] As a preferred technical solution of the present invention, the second mixing conditions include: temperature of 40-50° C., stirring speed of 800-1000 rpm, and time of 30-50 min.

[0049] As a preferred technical solution of the present invention, the third mixing conditions include: temperature of 40-50° C., stirring speed of 500-600 rpm, and time of 20-30 min.

[0050] As a preferred technical solution of the present invention, the time for adding the defoaming agent and continuing mixing is 5-10 minutes.

[0051] Compared with the prior art, the present invention has at least the following beneficial effects:

[0052] 1. Environmental protection: The water-based volatile punching and shearing oil in the present invention is more environmentally friendly than the existing oil-based volatile punching and shearing oil.

[0053] 2. Excellent lubricity and rust resistance: The various components in the present invention work synergistically with each other to make the punching and shearing oil have better lubricity and rust resistance. DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present invention are 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.

[0055] In the following preparation examples and embodiments:

[0056] Hydroxypropyl methyl guar gum powder and carboxymethyl cellulose were purchased from Renqiu Mingqi Chemical Co., Ltd.

[0057] The average flake size of boron nitride nanoparticles in aqueous dispersion was 140 nm and the concentration was 0.2 mg / mL, which was purchased from Jiangsu Xianfeng Nanomaterials Technology Co., Ltd.

[0058] The silica sol had an average particle size of 8 nm and a silicon dioxide content of 35 wt %, and was purchased from Shandong Guohua Chemical Co., Ltd.

[0059] Preparation Example

[0060] Preparation of oil A:

[0061] In a nitrogen atmosphere, octadecadienoic acid dimer, n-butyl tetradecanoate, and octylphenol polyoxyethylene ether (degree of polymerization: 10) in a mass ratio of 1:0.82:1.36 were mixed at 85°C for 15 minutes, and then p-toluenesulfonic acid (with a mass ratio of 0.026:1 to octadecadienoic acid dimer) was added, and the mixture was reacted at 130°C for 1.5 hours, and then vacuum dehydration was carried out at a vacuum degree of 600 Pa and a temperature of 92°C for 48 minutes, and finally, the mixture was evaporated and concentrated at 185°C for 30 minutes to obtain oil agent A.

[0062] Preparation of oil B:

[0063] In a nitrogen atmosphere, octadecadienoic acid dimer, n-butyl tetradecanoate, and octylphenol polyoxyethylene ether (degree of polymerization: 10) in a mass ratio of 1:0.8:1.4 were mixed at 90°C for 10 min, and then p-toluenesulfonic acid (with a mass ratio of 0.02:1 to octadecadienoic acid dimer) was added, and the mixture was reacted at 120°C for 2 h, and then vacuum dehydration was carried out at a vacuum degree of 1000 Pa and a temperature of 85°C for 50 min, and finally, the mixture was evaporated and concentrated at 190°C for 20 min to obtain oil agent B.

[0064] Example

[0065] Example 1

[0066] According to the mass fraction, prepare 13% of oil A, 9% of hydroxypropyl methyl guar gum powder, 4.3% of carboxymethyl cellulose, 26% of boron nitride nano-dispersion, 3.8% of monoimidazole hydrochloride, 1.6% of benzotriazole, 36% of silica sol, 3.2% of polysorbate 20, 0.35% of defoaming agent (model PD-142), and the balance is water;

[0067] Divide the water into two equal parts according to its mass and set aside for later use;

[0068] The first portion of water is mixed with boron nitride nano-water dispersion, monoimidazole ester hydrochloride, benzotriazole, and silica sol at room temperature and a power of 400 W for 35 minutes to obtain a first mixed material;

[0069] The second portion of water was mixed with oil A, hydroxypropyl methyl guar gum powder, carboxymethyl cellulose and polysorbate 20 at 45° C. and a stirring speed of 850 rpm for 42 minutes to obtain a second mixture;

[0070] The first mixed material and the second mixed material were mixed at 45° C. and a stirring speed of 420 rpm for 25 minutes, and then a defoaming agent was added and the mixing was continued for 8 minutes to obtain the punching and shearing oil.

[0071] Example 2

[0072] According to the mass fraction, prepare 15% of oil B, 8% of hydroxypropyl methyl guar gum powder, 4% of carboxymethyl cellulose, 30% of boron nitride nano-water dispersion, 3% of monoimidazole hydrochloride, 1.5% of benzotriazole, 30% of silica sol, 3% of polysorbate 40, 0.3% of defoaming agent (model PD-175), and the balance is water;

[0073] Divide the water into two equal parts according to its mass and set aside for later use;

[0074] The first portion of water is mixed with boron nitride nano-water dispersion, monoimidazole ester hydrochloride, benzotriazole, and silica sol at room temperature and a power of 500 W for 30 minutes to obtain a first mixed material;

[0075] The second portion of water was mixed with oil agent B, hydroxypropyl methyl guar gum powder, carboxymethyl cellulose and polysorbate 40 at 50° C. and a stirring speed of 1000 rpm for 30 minutes to obtain a second mixture;

[0076] The first mixed material and the second mixed material were mixed at 50° C. and a stirring speed of 500 rpm for 20 minutes, and then a defoaming agent was added and the mixing was continued for 10 minutes to obtain the punching and shearing oil.

[0077] Example 3

[0078] Prepare, by mass fraction, 13% castor oil, 9% hydroxypropyl methyl guar gum powder, 4.3% carboxymethyl cellulose, 26% boron nitride nano-dispersion, 3.8% monoimidazole hydrochloride, 1.6% benzotriazole, 36% silica sol, 3.2% polysorbate 20, 0.35% defoamer (model PD-142), and the balance is water;

[0079] Divide the water into two equal parts according to its mass and set aside for later use;

[0080] The first portion of water is mixed with boron nitride nano-water dispersion, monoimidazole ester hydrochloride, benzotriazole, and silica sol at room temperature and a power of 400 W for 35 minutes to obtain a first mixed material;

[0081] The second portion of water was mixed with castor oil, hydroxypropyl methyl guar gum powder, carboxymethyl cellulose and polysorbate 20 at 45° C. and a stirring speed of 850 rpm for 42 minutes to obtain a second mixture;

[0082] The first mixed material and the second mixed material were mixed at 45° C. and a stirring speed of 420 rpm for 25 minutes, and then a defoaming agent was added and the mixing was continued for 8 minutes to obtain the punching and shearing oil.

[0083] Example 4

[0084] According to the mass fraction, prepare 13% of oil A, 9% of hydroxypropyl methyl guar gum powder, 4.3% of carboxymethyl cellulose, 26% of boron nitride nano-dispersion, 3.8% of monoimidazole hydrochloride, 1.6% of benzotriazole, 36% of silica sol, 3.2% of polysorbate 20, 0.35% of defoaming agent (model PD-142), and the balance is water;

[0085] Water, boron nitride nano-water dispersion, monoimidazole ester hydrochloride, benzotriazole, silica sol, oil A, hydroxypropyl methyl guar gum powder, carboxymethyl cellulose, and polysorbate 20 were mixed at 45° C. and a stirring speed of 850 rpm for 80 minutes, and then a defoaming agent was added and the mixing was continued for 8 minutes to obtain a punching oil.

[0086] Comparative Example 1

[0087] According to the mass fraction, prepare 13% of oil A, 13.3% of hydroxypropyl methyl guar gum powder, 26% of boron nitride nano-dispersion, 3.8% of monoimidazole hydrochloride, 1.6% of benzotriazole, 36% of silica sol, 3.2% of polysorbate 20, 0.35% of defoamer (model PD-142), and the balance is water;

[0088] Divide the water into two equal parts according to its mass and set aside for later use;

[0089] The first portion of water is mixed with boron nitride nano-water dispersion, monoimidazole ester hydrochloride, benzotriazole, and silica sol at room temperature and a power of 400 W for 35 minutes to obtain a first mixed material;

[0090] The second portion of water was mixed with oil A, hydroxypropyl methyl guar gum powder and polysorbate 20 at 45° C. and a stirring speed of 850 rpm for 42 minutes to obtain a second mixture;

[0091] The first mixed material and the second mixed material were mixed at 45° C. and a stirring speed of 420 rpm for 25 minutes, and then a defoaming agent was added and the mixing was continued for 8 minutes to obtain the punching and shearing oil.

[0092] Comparative Example 2

[0093] According to the mass fraction, prepare 13% of oil A, 9% of hydroxypropyl methyl guar gum powder, 4.3% of carboxymethyl cellulose, 3.8% of monoimidazole hydrochloride, 1.6% of benzotriazole, 62% of silica sol, 3.2% of polysorbate 20, 0.35% of defoaming agent (model PD-142), and the balance is water;

[0094] Divide the water into two equal parts according to its mass and set aside for later use;

[0095] The first portion of water was mixed with monoimidazole ester hydrochloride, benzotriazole and silica sol at room temperature and a power of 400 W for 35 minutes to obtain a first mixed material;

[0096] The second portion of water was mixed with oil A, hydroxypropyl methyl guar gum powder, carboxymethyl cellulose and polysorbate 20 at 45° C. and a stirring speed of 850 rpm for 42 minutes to obtain a second mixture;

[0097] The first mixed material and the second mixed material were mixed at 45° C. and a stirring speed of 420 rpm for 25 minutes, and then a defoaming agent was added and the mixing was continued for 8 minutes to obtain the punching and shearing oil.

[0098] Comparative Example 3

[0099] According to the mass fraction, prepare 13% of oil A, 13.3% of carboxymethyl cellulose, 26% of boron nitride nano-water dispersion, 3.8% of monoimidazole hydrochloride, 1.6% of benzotriazole, 36% of silica sol, 3.2% of polysorbate 20, 0.35% of defoamer (model PD-142), and the balance is water;

[0100] Divide the water into two equal parts according to its mass and set aside for later use;

[0101] The first portion of water is mixed with boron nitride nano-water dispersion, monoimidazole ester hydrochloride, benzotriazole, and silica sol at room temperature and a power of 400 W for 35 minutes to obtain a first mixed material;

[0102] The second portion of water was mixed with the oil A, carboxymethyl cellulose and polysorbate 20 at 45° C. and a stirring speed of 850 rpm for 42 minutes to obtain a second mixture;

[0103] The first mixed material and the second mixed material were mixed at 45° C. and a stirring speed of 420 rpm for 25 minutes, and then a defoaming agent was added and the mixing was continued for 8 minutes to obtain the punching and shearing oil.

[0104] Comparative Example 4

[0105] According to the mass fraction, prepare 13% of oil A, 9% of hydroxypropyl methyl guar gum powder, 4.3% of carboxymethyl cellulose, 26% of boron nitride nano-dispersion, 2.6% of benzotriazole, 36% of silica sol, 3.2% of polysorbate 20, 0.35% of defoaming agent (model PD-142), and the balance is water;

[0106] Divide the water into two equal parts according to its mass and set aside for later use;

[0107] The first portion of water is mixed with the boron nitride nano-water dispersion, benzotriazole, and silica sol at room temperature and a power of 400 W for 35 minutes to obtain a first mixed material;

[0108] The second portion of water was mixed with oil A, hydroxypropyl methyl guar gum powder, carboxymethyl cellulose and polysorbate 20 at 45° C. and a stirring speed of 850 rpm for 42 minutes to obtain a second mixture;

[0109] The first mixed material and the second mixed material were mixed at 45° C. and a stirring speed of 420 rpm for 25 minutes, and then a defoaming agent was added and the mixing was continued for 8 minutes to obtain the punching and shearing oil.

[0110] Performance Testing

[0111] 1. Wear resistance test: The punching and shearing oils in the embodiments and comparative examples were tested using a MS-200 four-ball friction tester. The steel balls used in the test were GCr15 bearing steel balls with a diameter of 12.7 mm. The test conditions were: at room temperature, load 392 N, frequency 20 Hz, stroke 2 mm, wear resistance (expressed as wear spot diameter D-30 min (mm)) and load-bearing capacity (expressed as PB value).

[0112] 2. After the punching and shearing oils in the embodiments and comparative examples were placed in an environment of 5±1°C for 48 hours, the wear resistance (expressed as the wear spot diameter D-30min (mm)) and the load-bearing capacity (expressed as the PB value) were tested.

[0113] 3. Refer to the standard GB / T 2361 and use the CT-3 wet test machine to test the anti-rust performance of the test lubricant.

[0114] The test results are shown in Table 1.

[0115] Table 1

[0116]

[0117] It can be seen from the above performance test results that the punching and shearing fluid in the present invention has excellent lubrication, anti-wear and rust resistance.

[0118] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A rust-proof volatile punching and shearing oil, characterized in that: The punching and shearing oil comprises: oil agent, polysaccharide, cellulose, inorganic nano dispersion, monoimidazole ester hydrochloride, corrosion inhibitor, silica sol, surfactant, defoamer and water.

2. The punching and shearing oil according to claim 1, characterized in that: Calculated by mass fraction, the punching and shearing oil includes: 10-20% oil agent, 5-15% polysaccharide, 3-10% cellulose, 20-35% inorganic nano-dispersion liquid, 2-6% monoimidazole ester hydrochloride, 0.5-5% corrosion inhibitor, 25-45% silica sol, 1-5% surfactant, 0.1-1% defoamer, and the balance is water.

3. The punching and shearing oil according to claim 1 or 2, characterized in that: The preparation method of the oil comprises: in an inert atmosphere, octadecadienoic acid dimer, C8-C20 fatty acid ester and octylphenol polyoxyethylene ether are mixed, then p-toluenesulfonic acid is added for contact reaction, then a dehydration reaction is carried out, and finally evaporation and concentration are carried out to obtain the oil.

4. The punching and shearing oil according to claim 3, characterized in that: The mixing conditions include: temperature of 80-90°C and time of 10-20 min; the contact reaction conditions include: temperature of 120-140°C and time of 1-2 h; the evaporation concentration conditions include: temperature of 175-190°C and time of 20-40 min.

5. The punching and shearing oil according to claim 3, characterized in that: The mass ratio of the octadecadienoic acid dimer to C8-C20 fatty acid ester is 1:(0.7-0.9); the mass ratio of the octadecadienoic acid dimer to octylphenol polyoxyethylene ether is 1:(1.2-1.8); the mass ratio of the octadecadienoic acid dimer to p-toluenesulfonic acid is 1:(0.01-0.05).

6. The punching and shearing oil according to claim 1 or 2, characterized in that: The polysaccharide is selected from at least one of hydroxypropyl methyl guar gum powder, guar gum, xanthan gum, locust bean gum, carrageenan, kaempferia gum, konjac gum and gum arabic; the cellulose is selected from at least one of methyl cellulose, ethyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose and carboxymethyl hydroxyethyl cellulose.

7. The punching and shearing oil according to claim 1 or 2, characterized in that: The inorganic nano-dispersion liquid is selected from at least one of a boron nitride nano-water dispersion liquid, a tungsten disulfide water dispersion liquid and a single-layer graphene water dispersion liquid.

8. The punching and shearing oil according to claim 1 or 2, characterized in that: The corrosion inhibitor is selected from at least one of benzotriazole, 5-methylbenzotriazole phosphate ethanolamine salt, phosphate triethanolamine salt, borax and boric acid ethanolamine salt; and the surfactant is selected from non-ionic surfactants.

9. A method for preparing the rust-proof volatile punching and shearing oil according to any one of claims 1 to 8, characterized in that: The preparation method comprises (1) Divide the water into two equal parts according to mass; (2) taking a first portion of water and mixing it with an inorganic nano-dispersion liquid, a monoimidazole ester hydrochloride, a corrosion inhibitor, and a silica sol to obtain a first mixed material; (3) taking a second portion of water and mixing it with the oil, polysaccharide, cellulose, and surfactant to obtain a second mixture; (4) The first mixed material and the second mixed material are mixed for the third time, and then a defoaming agent is added and mixed continuously to obtain an anti-rust volatile punching and shearing oil.

10. The preparation method according to claim 9, characterized in that: The first mixing conditions include: room temperature, power of 300-500W, and processing time of 30-40min; the second mixing conditions include: temperature of 40-50°C, stirring speed of 800-1000rpm, and time of 30-50min; the third mixing conditions include: temperature of 40-50°C, stirring speed of 500-600rpm, and time of 20-30min.

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