CN109797023B - Million-ton complex forging lubricant for ten-thousand-ton press and preparation method thereof - Google Patents
Million-ton complex forging lubricant for ten-thousand-ton press and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a lubricant preparation technology for forging hundred-ton or more complex forgings by a ten-thousand-ton hydraulic press, belonging to the field of forging lubrication of the ten-thousand-ton hydraulic press. The million-ton complex forging lubricant for the ten-thousand-ton press comprises the following materials in parts by mass: 10-60 parts of graphite, 2-5 parts of graphite fluoride, 3-8 parts of metal copper powder, 3-6 parts of metal nickel powder, 1-5 parts of boron nitride, 1-5 parts of water-soluble alkali phenolic resin, 1-5 parts of lithium bentonite paste, 1-3 parts of aluminum magnesium silicate paste, 0.1-1.0 part of KH560 coupling agent, 0.2-0.5 part of polyvinyl butyral resin and 20-50 parts of water. The suspension property (24H)/the suspension property (98%) of the lubricant for high-quality forging of the super-huge forging is more than 98%, Pb in a four-ball test is more than or equal to 1350 kg, the solid content is more than 35%, the friction coefficient at 600 ℃ measured by a circular ring dun coarse method is 0.03, and the lubricant can be rapidly dispersed in 12 months, is free from agglomeration and is free from pollution to the environment.
Description
Technical Field
The invention relates to a million-ton complex forging lubricant for a ten thousand-ton press and a preparation method thereof, belonging to the field of forging lubrication for the ten thousand-ton press.
Background
In the manufacture of major equipment, forging a forging with a million tons of weight or more by a ten thousand tons of press, particularly a hydraulic press, is a key link in the manufacture, and in the process, when a complex forging is forged, the requirement of profile modeling of a special-shaped structure is met, a die is required to be utilized to enable metal to generate directional flow, but the friction between deformed metal and the die often generates great limitation on the metal flow, so that the forming effect is influenced. Meanwhile, the die clamping problem in the later stage of forging also increases the forging times, and the forging efficiency is low. The problems are lubricated by the conventional graphite lubricating oil or water-based graphite emulsion, so that the labor intensity of an operator is high, the forging fire is multiple, the efficiency is low, and the lubricating effect is not ideal after the lubricating oil or the emulsion is burnt at high temperature.
In the prior art, for example, in chinese patent CN201810202936.0, "manufacturing process of flange with large wall thickness and ultra-large wall thickness for shield machine", a graphite lubricant is used for a 6000T press, and the weight of forging is only 20 tons. Since graphite or a lubricant based on graphite is used in China in large scale in the eighties of the last century, the graphite lubricant is almost used in the forging field as a small die forging, the lubricant meets the requirement of smaller forging deformation stress, and the lubricant is usually composed of graphite powder, a binder, a suspending agent, a preservative and the like, for example, Chinese patent CN 201710565783.1' a graphite lubricant and a preparation method thereof the graphite lubricant is composed of the following formula components in parts by mass: 20-30 parts of graphite, 10-12 parts of graphene, 2-6 parts of titanium dioxide powder, 1-3 parts of methyl cellulose, 2-4 parts of calcium oxide, 1.5-3 parts of monoethanolamine, 3-6 parts of sodium silicate, 2-4 parts of gelatin, 5-7 parts of borax, 2-3 parts of ethylene-vinyl acetate copolymer, 1-2 parts of 2-ethyl acrylate, 4-5 parts of diacetone alcohol, 1-2 parts of tetrahydrofuran, 2-3 parts of propanol, 2-3 parts of dispersing agent and 50-70 parts of deionized water, wherein as shown by the compositions of the lubricating agents, the lubricating agents have no capacity of forming a lubricating film under high pressure, and the binding agents such as the methyl cellulose, the gelatin and the like lose binding power at more than 100 ℃, these graphite lubricants do not meet the requirements of ten thousand hydraulic presses for forging forgings of weight of one hundred tons or more. In fact, no ideal lubricant exists for forging large-tonnage complex forgings on a ten-thousand-ton press at home and abroad until now.
Therefore, the lubricant developed for forging forgings with weight of one hundred tons or more by a ten-thousand-ton hydraulic press is the target of the invention, and the key technology for solving the target is that the lubricant provided by the invention can meet the requirement of reducing the friction force by the huge deformation stress when the forgings with weight of one hundred tons or more are deformed by the ten-thousand-ton hydraulic press, and has extremely excellent extreme pressure resistance, high-temperature oxidation resistance and high-temperature adhesive force.
Disclosure of Invention
In order to overcome the lubrication defect of the existing lubricant, including graphite lubricant, when forging forgings with weight of hundreds of tons or more on a ten-thousand-ton hydraulic press, the invention provides a novel lubricant.
The million-ton complex forging lubricant for the ten-thousand-ton press comprises the following materials in parts by mass: 10-60 parts of graphite, 2-5 parts of graphite fluoride, 3-8 parts of metal copper powder, 3-6 parts of metal nickel powder, 1-5 parts of boron nitride, 1-5 parts of water-soluble alkali phenolic resin, 1-5 parts of lithium bentonite paste, 1-5 parts of aluminum magnesium silicate paste, 0.1-1.0 part of KH560 coupling agent, 0.2-0.5 part of low-viscosity polyvinyl butyral resin and 20-50 parts of water.
Preferably, the million-ton complex forging lubricant for the ten-thousand-ton press comprises the following materials in parts by mass: 20-22 parts of graphite, 3-5 parts of graphite fluoride, 3 parts of metal copper powder, 3-5 parts of metal nickel powder, 1-2 parts of boron nitride, 2 parts of water-soluble alkali phenolic resin, 1.5-2 parts of lithium bentonite paste, 1-1.5 parts of aluminum magnesium silicate paste, 0.1-0.2 part of KH560 coupling agent, 0.3 part of low-viscosity polyvinyl butyral resin and 35-40 parts of water.
More preferably, the million-ton complex forging lubricant for the ten-thousand-ton press comprises the following materials in parts by mass: the material composition comprises the following materials in parts by mass: 20 parts of graphite, 3 parts of graphite fluoride, 3 parts of metal copper powder, 5 parts of metal nickel powder, 2 parts of boron nitride, 2 parts of water-soluble alkali phenolic resin, 2 parts of lithium bentonite paste, 1 part of aluminum magnesium silicate paste, 0.1 part of KH560 coupling agent, 0.3 part of low-viscosity polyvinyl butyral resin and 35 parts of water.
Preferably, the preparation method of the water-soluble alkali phenolic resin comprises the following steps:
(1) taking phenol, heating the phenol to 55 +/-2 ℃, and adding activated solid alkali metal acetate;
(2) continuously heating to 65 +/-2 ℃, adding an alkali catalyst with the total amount of the alkali catalyst of 1/3, and gradually dripping aldehyde, wherein the time is controlled to be 0.5-1.5 hours;
(3) then adding graphite powder, adding an alkali catalyst with the total amount of the alkali catalyst being 1/3, continuing to heat, and reacting for 1.5-2 hours at the temperature of 75 +/-5 ℃;
(4) heating to 100 +/-5 ℃, reacting for 1.5-2 hours, then adding an alkali catalyst with the total amount of 1/3, adding a silicon coupling agent when the viscosity of a reactant reaches 50-55 centipoises/25 ℃, finishing the reaction, cooling to 40-50 ℃, and obtaining a water-soluble alkali phenolic resin binder;
wherein the raw materials are weighed according to the following weight percentage: 16-30% of phenol, 40-55% of aldehyde, 0.5-10% of graphite powder, 15-30% of alkali catalyst, 0.01-2% of silicon coupling agent and 0.5-10% of alkali metal acetate.
Preferably: the phenol is at least one of phenol, p/m-cresol, p/resorcinol, bisphenol-A and bisphenol-F phenol; the aldehyde is at least one of formaldehyde, paraformaldehyde, glyoxal, acetal and furfural; the alkali catalyst is at least one of hydroxides of alkali metals: such as sodium hydroxide, barium hydroxide, ammonium hydroxide, calcium hydroxide, and the like; the silane coupling agent may be at least one of KH560, γ -aminopropylmethyldiethoxysilane, 3- (2, 3-glycidoxy) propyltriethoxysilane, 3-piperazinylpropylmethyldimethoxysilane and vinyltris (b-methoxyethoxy) silane.
Preferably, the graphite has a fixed carbon content of more than 99.7 percent and a particle size of not more than 5 mu m; the purity of the graphite fluoride is more than 99 percent, and the granularity is not more than 20 nm; the purity of the copper powder is more than 99.8%, and the granularity is not more than 20 μm; the purity of the metal nickel powder is more than 99%, and the granularity is not more than 20 nm; the purity of the boron nitride is more than 99 percent, and the granularity is not more than 20 nm.
Preferably, the lithium bentonite paste is prepared by the following method: uniformly mixing lithium bentonite and water, standing for more than 24 hours, and dispersing to obtain a lithium bentonite paste; preferably, the weight ratio of the lithium bentonite to the water is 1: 1.
Preferably, the aluminum magnesium silicate paste is prepared by the following method: uniformly mixing the aluminum magnesium silicate with the absolute ethyl alcohol, adding water, uniformly mixing, and standing for more than 24 hours to obtain an aluminum magnesium silicate paste; preferably, the weight ratio of the magnesium aluminum silicate to the water to the absolute ethyl alcohol is 1:1: 1.
Preferably, the low viscosity polyvinyl butyral resin: moleculeThe amount of the organic solvent is 1.8 to 2.7 × 104The viscosity of 10% ethanol solution is coated in 4 cups for 20 seconds, and the polymerization degree is 300-400.
The invention also provides a preparation method of the million-ton complex forging lubricant for the ten-thousand-ton press. The preparation method comprises the following steps:
a. taking graphite, graphite fluoride, metal copper powder, metal nickel powder, boron nitride, water-soluble alkali phenolic resin, lithium bentonite paste, aluminum magnesium silicate paste, KH560 coupling agent, polyvinyl butyral and water according to the mixture ratio of the raw materials; dividing the water into 3 parts, wherein the weight ratio of the first part of water to the second part of water to the third part of water is 3: 6-6.5: 0.5-1; preferably, the weight ratio of water is 3:6.3: 0.7;
uniformly mixing the lithium bentonite paste, the aluminum magnesium silicate paste, the water-soluble alkali phenolic resin, the low-viscosity polyvinyl butyral resin and the first part of water; preferably, a high-speed dispersion machine is adopted for uniformly mixing, and the dispersion speed is 100-200 r/min;
b. then adding graphite powder, graphite fluoride powder, boron nitride, metal copper powder, metal nickel powder, KH560 coupling agent and second part of water, uniformly mixing and sanding; finally, regulating the viscosity of the lubricant by using third part of water at room temperature until the lubricant is coated in a-4 cup for 40-45 seconds; preferably, the uniform mixing is carried out by adopting a high-speed dispersion machine, the dispersion speed is 700-1500 r/min, and the dispersion time is 60 min; the sanding time was 60 minutes.
The invention has the beneficial effects that:
the invention effectively solves the lubrication defect of the forging of a forging piece with the weight of hundreds of tons or more by the existing ten thousand-ton hydraulic press, provides a high-quality lubricant for forging an oversize forging piece with the weight of hundreds of tons or more, ensures that the lubricant has good adhesive force at normal temperature and high temperature due to the use of water-soluble phenolic aldehyde modified resin, graphite powder and low-viscosity polyvinyl butyral resin which are added when synthetic resin is used, ensures the lubricating extreme pressure performance of the forging piece with the weight of hundreds of tons or more by the graphite powder, graphite fluoride powder, boron nitride powder, metal copper powder and metal nickel powder in the lubricant and a mixture formed by the powder and the water-soluble phenolic resin at high temperature, ensures the solid materials in the lubricant can be dispersed and suspended stably by using the lithium-based bentonite paste and the aluminum magnesium silicate paste, is favorable for the exertion of the lubricating performance, the lubricant is convenient to use.
The super-huge forging high-quality forging lubricant prepared by the technical scheme has excellent performance of various technical indexes, and according to the detection of related test methods, the suspension property (24H)/is more than 98%, the Pb content in a four-ball test is more than or equal to 1350 kg, the solid content is more than 35%, the friction coefficient at 600 ℃ measured by a circular ring dun coarse method is 0.03, the lubricant can be rapidly dispersed in the storage period of 12 months, has no agglomeration, can be conveniently used by any one of spraying, brushing and rolling modes, and has no pollution to the environment.
Detailed Description
In order to overcome the lubrication defect of the existing lubricant, including graphite lubricant, when forging forgings with weight of hundreds of tons or more on a ten-thousand-ton hydraulic press, the invention provides a novel lubricant.
The million-ton complex forging lubricant for the ten-thousand-ton press comprises the following materials in parts by mass: 10-60 parts of graphite, 2-5 parts of graphite fluoride, 3-8 parts of metal copper powder, 3-6 parts of metal nickel powder, 1-5 parts of boron nitride, 1-5 parts of water-soluble alkali phenolic resin, 1-5 parts of lithium bentonite paste, 1-5 parts of aluminum magnesium silicate paste, 0.1-1.0 part of KH560 coupling agent, 0.2-0.5 part of low-viscosity polyvinyl butyral resin and 20-50 parts of water.
The lubricant of the invention needs to be in the limited proportion, and when the proportion is not in the limited proportion, the performance of the prepared lubricant is poor.
Preferably, the million-ton complex forging lubricant for the ten-thousand-ton press comprises the following materials in parts by mass: 20-22 parts of graphite, 3-5 parts of graphite fluoride, 3 parts of metal copper powder, 3-5 parts of metal nickel powder, 1-2 parts of boron nitride, 2 parts of water-soluble alkali phenolic resin, 1.5-2 parts of lithium bentonite paste, 1-1.5 parts of aluminum magnesium silicate paste, 0.1-0.2 part of KH560 coupling agent, 0.3 part of low-viscosity polyvinyl butyral resin and 35-40 parts of water.
More preferably: the material composition comprises the following materials in parts by mass: 20 parts of graphite, 3 parts of graphite fluoride, 3 parts of metal copper powder, 5 parts of metal nickel powder, 2 parts of boron nitride, 2 parts of water-soluble alkali phenolic resin, 2 parts of lithium bentonite paste, 1 part of aluminum magnesium silicate paste, 0.1 part of KH560 coupling agent, 0.3 part of low-viscosity polyvinyl butyral resin and 35 parts of water.
Preferably, the preparation method of the water-soluble alkali phenolic resin comprises the following steps:
(1) taking phenol, heating the phenol to 55 +/-2 ℃, and adding activated solid alkali metal acetate;
(2) continuously heating to 65 +/-2 ℃, adding an alkali catalyst with the total amount of the alkali catalyst of 1/3, and gradually dripping aldehyde, wherein the time is controlled to be 0.5-1.5 hours;
(3) then adding graphite powder, adding an alkali catalyst with the total amount of the alkali catalyst being 1/3, continuing to heat, and reacting for 1.5-2 hours at the temperature of 75 +/-5 ℃;
(4) heating to 100 +/-5 ℃, reacting for 1.5-2 hours, then adding an alkali catalyst with the total amount of 1/3, adding a silicon coupling agent when the viscosity of a reactant reaches 50-55 centipoises/25 ℃, finishing the reaction, cooling to 40-50 ℃, and obtaining a water-soluble alkali phenolic resin binder;
wherein the raw materials are weighed according to the following weight percentage: 16-30% of phenol, 40-55% of aldehyde, 0.5-10% of graphite powder, 15-30% of an alkali catalyst, 0.01-2% of a silane coupling agent and 0.5-10% of alkali metal acetate.
Preferably: the phenol is at least one of phenol, p/m-cresol, p/resorcinol, bisphenol-A and bisphenol-F phenol; the aldehyde is at least one of formaldehyde, paraformaldehyde, glyoxal, acetal and furfural; the alkali catalyst is at least one of alkali metal hydroxide: such as sodium hydroxide, barium hydroxide, ammonium hydroxide, calcium hydroxide, and the like; the silane coupling agent may be at least one of KH560, γ -aminopropylmethyldiethoxysilane, 3- (2, 3-glycidoxy) propyltriethoxysilane, 3-piperazinylpropylmethyldimethoxysilane and vinyltris (b-methoxyethoxy) silane.
Preferably, the graphite has a fixed carbon content of more than 99.7 percent and a particle size of not more than 5 mu m; the purity of the graphite fluoride is more than 99 percent, and the granularity is not more than 20 nm; the purity of the metal copper powder is more than 99.8 percent, and the granularity is not larger than 20 mu m; the purity of the metal nickel powder is more than 99%, and the granularity is not more than 20 nm; the purity of the boron nitride is more than 99 percent, and the granularity is not more than 20 nm.
Preferably, the lithium bentonite paste is prepared by the following method: uniformly mixing lithium bentonite and water, standing for more than 24 hours, and dispersing to obtain a lithium bentonite paste; preferably, the weight ratio of the lithium bentonite to the water is 1: 1.
Preferably, the aluminum magnesium silicate paste is prepared by the following method: uniformly mixing the aluminum magnesium silicate with the absolute ethyl alcohol, adding water, stirring and standing for more than 24 hours to obtain an aluminum magnesium silicate paste; preferably, the weight ratio of the magnesium aluminum silicate to the water to the absolute ethyl alcohol is 1:1: 1.
The association network structure of the lithium bentonite paste and the aluminum magnesium silicate paste has super strong solid binding and isolating capacity, so that the lubricating components in the formula are uniformly suspended and dispersed in the whole system, and the lithium bentonite paste and the aluminum magnesium silicate paste have ideal suspension rate and suspension stability. The viscosity of the lubricant can be reduced when shearing is carried out, and the original viscosity of the lubricant can be recovered after shearing is stopped, so that the lubricant has excellent thixotropic and leveling properties, and can be widely used in different application processes such as brushing, spraying, dip-coating, roll-coating and the like.
Preferably, the low-viscosity polyvinyl butyral resin has a molecular weight of 1.8-2.7 × 104The viscosity of 10% ethanol solution is coated in 4 cups for 20 seconds, and the polymerization degree is 300-400.
The invention also provides a preparation method of the million-ton complex forging lubricant for the ten-thousand-ton press. The preparation method comprises the following steps:
a. taking graphite, graphite fluoride, metal copper powder, metal nickel powder, boron nitride, water-soluble alkali phenolic resin, lithium bentonite paste, aluminum magnesium silicate paste, KH560 coupling agent, polyvinyl butyral and water according to the mixture ratio of the raw materials; dividing the water into 3 parts, wherein the weight ratio of the first part of water to the second part of water to the third part of water is 3: 5-6: 1-2; preferably, the weight ratio of water is 3:5.6: 1.4;
uniformly mixing the lithium bentonite paste, the aluminum magnesium silicate paste, the water-soluble alkali phenolic resin, the low-viscosity polyvinyl butyral resin and the first part of water; preferably, a high-speed dispersion machine is adopted for uniformly mixing, and the dispersion speed is 100-200 r/min;
b. then adding graphite powder, graphite fluoride powder, boron nitride, metal copper powder, metal nickel powder, KH560 coupling agent and second part of water, uniformly mixing and sanding; finally, regulating the viscosity of the lubricant by using third part of water at room temperature until the lubricant is coated in a-4 cup for 40-45 seconds; preferably, the uniform mixing is carried out by adopting a high-speed dispersion machine, the dispersion speed is 700-1500 r/min, and the dispersion time is 60 min; the sanding time was 60 minutes.
The following examples are provided to further illustrate the embodiments of the present invention and are not intended to limit the scope of the present invention.
Preparation of raw materials:
1. preparing a lithium bentonite paste:
the lithium bentonite is fully mixed with water according to the weight ratio of 1:1, and after standing for more than 24 hours to activate the mixture, the mixture is dispersed into paste on a high-speed dispersion machine at the speed of 700 r/min for standby.
2. Preparing an aluminum magnesium silicate paste:
uniformly mixing the aluminum magnesium silicate and the absolute ethyl alcohol in a ratio of 1:1, adding water in a ratio of the aluminum magnesium silicate to the water of 1:1, stirring and standing for more than 24 hours to obtain paste for later use.
3. Preparation of water-soluble alkali phenolic resin:
the invention prepares two water-soluble alkali phenolic aldehyde modified resins F1 and F2
1. Preparation of Water-soluble alkaline phenolic resin F1
The weight percentage ratio is as follows: weighing 16% of phenol, 50% of formaldehyde, 5% of graphite powder, 22% of potassium hydroxide, 5602% of KH and 5% of potassium acetate;
(1) putting phenol into a reaction kettle, stirring, heating, and adding activated solid potassium acetate at 55 ℃.
(2) Heating to 65 ℃, adding potassium hydroxide with the total amount of the potassium hydroxide of 1/3, and gradually dripping formaldehyde, wherein the time is controlled to be 1 hour;
(3) then adding graphite powder, adding potassium hydroxide with the total amount of 1/3 potassium hydroxide, continuing to heat, and reacting for 1.8 hours at the temperature of 75 ℃;
(4) heating to 100 ℃, reacting for 1.5 hours, then adding potassium hydroxide with the total amount of the potassium hydroxide being 1/3, adding a silicon coupling agent when the viscosity of a reactant reaches 50 (centipoise/25 ℃), finishing the reaction, cooling to about 45 ℃, and obtaining the water-soluble phenolic modified resin F1 for the large steel casting coating.
2. Preparation of Water-soluble alkaline phenolic resin F2
The weight percentage ratio is as follows: weighing 25% of phenol, 40% of formaldehyde, 10% of graphite powder, 13% of potassium hydroxide, 5602% of KH and 10% of potassium acetate;
except for the raw material proportion, the preparation method is the same as F1, and the water-soluble phenolic resin F2 for the large steel casting coating is obtained.
Example 1
Weighing 20 parts of graphite, 3 parts of graphite fluoride, 3 parts of metal copper powder, 5 parts of metal nickel powder, 2 parts of boron nitride, 2 parts of lithium bentonite paste, 1 part of aluminum magnesium silicate paste, 0.1 part of KH560 coupling agent, 0.3 part of low-viscosity polyvinyl butyral resin, water-soluble alkali phenolic resin F12 parts and 35 parts of tap water;
the preparation method of the lubricant comprises the following steps: adding the lithium bentonite paste, the aluminum magnesium silicate paste, the water-soluble alkali phenolic resin, the low-viscosity polyvinyl butyral resin and 30% of tap water into a high-speed dispersion machine, uniformly stirring at the speed of 150 r/min, adding graphite powder, graphite fluoride powder, boron nitride powder, copper metal powder, nickel metal powder, KH560 coupling agent and 90% of the residual tap water, gradually thickening the slurry after adding the solid powder, adjusting the distance between a dispersion disc and the bottom of a charging barrel to make a vortex into a shallow basin shape, increasing the rotating speed and stirring at the speed of 1000 r/min for 60 minutes after adding all the raw materials, and cooling by introducing water through a jacket to prevent the temperature from rising too high during dispersion. After dispersion is finished, the mixture is transferred to a sand mill to be ground for 60 minutes, and the viscosity of the lubricant is adjusted by the residual tap water at room temperature until the mixture is coated in a 4-cup for 40-45 seconds.
Example 2
Weighing 22 parts of graphite, 5 parts of graphite fluoride, 3 parts of metal copper powder, 3 parts of metal nickel powder, 1 part of boron nitride, 1.5 parts of lithium bentonite paste, 1.5 parts of aluminum magnesium silicate paste, 0.2 part of KH560 coupling agent, 0.3 part of low-viscosity polyvinyl butyral resin, water-soluble alkali phenolic resin F12 parts and 40 parts of tap water.
The lubricant was formulated as in example 1.
Example 3
Weighing 35 parts of graphite, 5 parts of graphite fluoride, 5 parts of metal copper powder, 4 parts of metal nickel powder, 1 part of boron nitride, 1.5 parts of lithium bentonite paste, 1.5 parts of aluminum magnesium silicate paste, 0.2 part of KH560 coupling agent, 0.3 part of low-viscosity polyvinyl butyral resin, 12.5 parts of water-soluble alkali phenolic resin F and 40 parts of tap water.
The lubricant was formulated as in example 1.
Example 4
Weighing 35 parts of graphite, 5 parts of graphite fluoride, 5 parts of metal copper powder, 4 parts of metal nickel powder, 2 parts of boron nitride, 2 parts of lithium bentonite paste, 1 part of aluminum magnesium silicate paste, 0.1 part of KH560 coupling agent, 0.3 part of low-viscosity polyvinyl butyral resin, water-soluble alkali phenolic resin F22 parts and 35 parts of tap water;
the lubricant was formulated as in example 1.
Example 5
Weighing 60 parts of graphite, 2 parts of graphite fluoride, 8 parts of metal copper powder, 4 parts of metal nickel powder, 5 parts of boron nitride, 1 part of lithium bentonite paste, 5 parts of aluminum magnesium silicate paste, 1 part of KH560 coupling agent, 0.5 part of low-viscosity polyvinyl butyral resin, water-soluble alkali phenolic resin F25 parts and 50 parts of tap water;
the lubricant was formulated as in example 1.
Test examples
The properties of the samples obtained in examples 1 to 5 are shown in Table 1.
The method for testing the friction coefficient is a circular ring dun rough method.
TABLE 1
The super-huge forging high-quality forging lubricant prepared by the technical scheme has excellent performance of various technical indexes, and according to the detection of related test methods, the suspension property (24H)/is more than 98%, the Pb content in a four-ball test is more than or equal to 1350 kg, the solid content is more than 35%, the friction coefficient at 600 ℃ measured by a circular ring dun coarse method is 0.03, the lubricant can be rapidly dispersed in the storage period of 12 months, has no agglomeration, can be conveniently used by any one of spraying, brushing and rolling modes, and has no pollution to the environment.
Claims (13)
1. Million tons of complicated forgings of press machine forge emollient, its characterized in that: the material composition comprises the following materials in parts by mass: 10-60 parts of graphite, 2-5 parts of graphite fluoride, 3-8 parts of metal copper powder, 3-6 parts of metal nickel powder, 1-5 parts of boron nitride, 1-5 parts of water-soluble alkali phenolic resin, 1-5 parts of lithium bentonite paste, 1-5 parts of aluminum magnesium silicate paste, 0.1-1.0 part of KH560 coupling agent, 0.2-0.5 part of low-viscosity polyvinyl butyral resin and 20-50 parts of water; wherein the polymerization degree of the low-viscosity polyvinyl butyral resin is 300-400.
2. The million-ton complex forging lubricant for ten-thousand-ton presses of claim 1, characterized in that: the material composition comprises the following materials in parts by mass: 20-22 parts of graphite, 3-5 parts of graphite fluoride, 3 parts of metal copper powder, 3-5 parts of metal nickel powder, 1-2 parts of boron nitride, 2 parts of water-soluble alkali phenolic resin, 1.5-2 parts of lithium bentonite paste, 1-1.5 parts of aluminum magnesium silicate paste, 0.1-0.2 part of KH560 coupling agent, 0.3 part of low-viscosity polyvinyl butyral resin and 35-40 parts of water.
3. The million-ton complex forging lubricant for ten thousand-ton presses according to claim 1, characterized by consisting of the following materials in parts by mass: 20 parts of graphite, 3 parts of graphite fluoride, 3 parts of metal copper powder, 5 parts of metal nickel powder, 2 parts of boron nitride, 2 parts of water-soluble alkali phenolic resin, 2 parts of lithium bentonite paste, 1 part of aluminum magnesium silicate paste, 0.1 part of KH560 coupling agent, 0.3 part of low-viscosity polyvinyl butyral resin and 35 parts of water.
4. The million-ton complex forging lubricant for the ten-thousand-ton press according to any one of claims 1 to 3, characterized in that the preparation method of the water-soluble alkali phenolic resin comprises the following steps:
(1) taking phenol, heating the phenol to 55 +/-2 ℃, and adding activated solid alkali metal acetate;
(2) continuously heating to 65 +/-2 ℃, adding an alkali catalyst with the total amount of the alkali catalyst of 1/3, and gradually dripping aldehyde, wherein the aldehyde dripping time is controlled to be 0.5-1.5 hours;
(3) then adding graphite, adding an alkali catalyst with the total amount of the alkali catalyst being 1/3, continuing to heat, and reacting for 1.5-2 hours at the temperature of 75 +/-5 ℃;
(4) heating to 100 +/-5 ℃, reacting for 1.5-2 hours, adding an alkali catalyst with the total amount of the alkali catalyst being 1/3, adding a silicon coupling agent when the viscosity of a reactant reaches 50-55 centipoises/25 ℃, finishing the reaction, cooling to 40-50 ℃ to obtain water-soluble alkali phenolic resin;
wherein the raw materials are weighed according to the following weight percentage: 16-30% of phenol, 40-55% of aldehyde, 0.5-10% of graphite powder, 15-30% of alkali catalyst, 0.01-2% of silicon coupling agent and 0.5-10% of alkali metal acetate.
5. The million ton press million ton complex forging lubricant according to claim 4 is characterized in that the phenol is at least one of phenol, p/m-cresol, p/resorcinol, bisphenol-A and bisphenol-F, the aldehyde is at least one of formaldehyde, paraformaldehyde, glyoxal, acetal and furfural, the base catalyst is alkali metal hydroxide, and the silicon coupling agent is at least one of KH560, gamma-aminopropylmethyldiethoxysilane, 3- (2, 3-glycidoxy) propyltriethoxysilane, 3-piperazinylpropylmethyldimethoxysilane and vinyltris (β -methoxyethoxy) silane.
6. The million-ton complex forging lubricant for ten-thousand-ton presses of claim 1, characterized in that: the fixed carbon content of the graphite is more than 99.7 percent, and the granularity is not more than 5 mu m; the purity of the graphite fluoride is more than 99 percent, and the granularity is not more than 20 nm; the purity of the copper powder is more than 99.8%, and the granularity is not more than 20 μm; the purity of the metal nickel powder is more than 99%, and the granularity is not more than 20 nm; the purity of the boron nitride is more than 99 percent, and the granularity is not more than 20 nm.
7. The million-ton complex forging lubricant for ten-thousand-ton presses of claim 1, characterized in that: the lithium bentonite paste is prepared by the following method: and mixing the lithium bentonite and water uniformly, standing for more than 24 hours, and dispersing to obtain the lithium bentonite paste.
8. The million-ton complex forging lubricant for ten-thousand-ton presses of claim 7, characterized in that: the weight ratio of the lithium bentonite to the water is 1: 1.
9. The million ton complex forging lubricant for ten thousand ton presses according to claim 1, characterized in that the aluminum magnesium silicate paste is prepared by the following method: and (3) uniformly mixing the aluminum magnesium silicate with the absolute ethyl alcohol, adding water, uniformly mixing, and standing for more than 24 hours to obtain the aluminum magnesium silicate paste.
10. The million ton press complex forging lubricant according to claim 9, characterized in that the weight ratio of magnesium aluminum silicate, water and absolute ethanol is 1:1: 1.
11. The million-ton complex forging lubricant for ten thousand-ton press according to claim 1, wherein the molecular weight of the low-viscosity polyvinyl butyral resin is 1.8-2.7 × 104g/mole, viscosity of 10% ethanol solution applied to 4 cups for 20 seconds.
12. The preparation method of the million-ton complex forging lubricant for the ten-thousand-ton press as claimed in any one of claims 1 to 11, is characterized by comprising the following steps:
a. taking graphite, graphite fluoride, metallic copper powder, metallic nickel powder, boron nitride, water-soluble alkali phenolic resin, lithium bentonite paste, aluminum magnesium silicate paste, KH560 coupling agent, low-viscosity polyvinyl butyral resin and water according to the raw material ratio of any one of claims 1 to 11; dividing the water into 3 parts, wherein the weight ratio of the first part of water to the second part of water to the third part of water is 3: 6-6.5: 0.5-1;
uniformly mixing the lithium bentonite paste, the aluminum magnesium silicate paste, the water-soluble alkali phenolic resin, the low-viscosity polyvinyl butyral resin and the first part of water;
b. then adding graphite, graphite fluoride, boron nitride, metallic copper powder, metallic nickel powder, KH560 coupling agent and second part of water, uniformly mixing and sanding; and finally, regulating the viscosity of the lubricant by using third part of water at room temperature until the lubricant is coated in a-4 cup for 40-45 seconds to obtain million tons of complex forging lubricant for ten thousand tons of presses.
13. The method for preparing the million-ton complex forging lubricant for the ten-thousand-ton press according to claim 12, wherein in the step a, the weight ratio of the first part of water to the second part of water to the third part of water is 3:6.3: 0.7; uniformly mixing by adopting a high-speed dispersion machine, wherein the dispersion speed is 100 and 200 r/min;
in the step b, uniformly mixing by using a high-speed dispersion machine, wherein the dispersion speed is 700-1500 r/min, and the dispersion time is 60 min; the sanding time was 60 minutes.
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| CN1238131C (en) * | 2004-04-09 | 2006-01-25 | 四川德阳二重精细化工厂 | Nano level cementing material in use for foundry sand, preparation method and usage |
| CN106047461A (en) * | 2016-05-26 | 2016-10-26 | 新乡学院 | Aqueous, environment-friendly, pollution-free and high-temperature graphite lubricating coating material |
| CN106867644A (en) * | 2016-12-26 | 2017-06-20 | 安徽宝恒新材料科技有限公司 | A kind of stainless steel forging compounded lubricant and preparation method thereof and application method |
| CN107971455A (en) * | 2017-12-15 | 2018-05-01 | 二重（德阳）重型装备有限公司 | Heavy castings alcohol-base paint and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2016216536A (en) * | 2015-05-15 | 2016-12-22 | 日本パーカライジング株式会社 | Aqueous lubricant, metallic material and metal worked part |
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| US4013570A (en) * | 1975-04-07 | 1977-03-22 | General Motors Corporation | Graphite and copper in hot forging liquid lubricant |
| CN1238131C (en) * | 2004-04-09 | 2006-01-25 | 四川德阳二重精细化工厂 | Nano level cementing material in use for foundry sand, preparation method and usage |
| CN106047461A (en) * | 2016-05-26 | 2016-10-26 | 新乡学院 | Aqueous, environment-friendly, pollution-free and high-temperature graphite lubricating coating material |
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