CN115820324A - Special lubricating grease for ball mill and preparation method thereof - Google Patents
Special lubricating grease for ball mill and preparation method thereof Download PDFInfo
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- CN115820324A CN115820324A CN202211638826.1A CN202211638826A CN115820324A CN 115820324 A CN115820324 A CN 115820324A CN 202211638826 A CN202211638826 A CN 202211638826A CN 115820324 A CN115820324 A CN 115820324A
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- base oil
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- pressure agent
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- 239000004519 grease Substances 0.000 title claims abstract description 54
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims description 7
- 238000000498 ball milling Methods 0.000 title description 2
- 239000002199 base oil Substances 0.000 claims abstract description 65
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 36
- 239000007787 solid Substances 0.000 claims abstract description 27
- 239000000344 soap Substances 0.000 claims abstract description 23
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 20
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 20
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 20
- 239000011575 calcium Substances 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 239000012188 paraffin wax Substances 0.000 claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 11
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 8
- 239000013556 antirust agent Substances 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 6
- 239000010439 graphite Substances 0.000 claims abstract description 6
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims description 28
- 238000001914 filtration Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 14
- 238000007872 degassing Methods 0.000 claims description 12
- 239000006185 dispersion Substances 0.000 claims description 11
- 238000004806 packaging method and process Methods 0.000 claims description 8
- 229920002367 Polyisobutene Polymers 0.000 claims description 6
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 claims description 4
- WSFQLUVWDKCYSW-UHFFFAOYSA-M sodium;2-hydroxy-3-morpholin-4-ylpropane-1-sulfonate Chemical group [Na+].[O-]S(=O)(=O)CC(O)CN1CCOCC1 WSFQLUVWDKCYSW-UHFFFAOYSA-M 0.000 claims description 4
- UGUHFDPGDQDVGX-UHFFFAOYSA-N 1,2,3-thiadiazole Chemical group C1=CSN=N1 UGUHFDPGDQDVGX-UHFFFAOYSA-N 0.000 claims description 3
- 239000003112 inhibitor Substances 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims description 3
- 239000006078 metal deactivator Substances 0.000 claims description 2
- 238000005086 pumping Methods 0.000 abstract description 6
- 239000002131 composite material Substances 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 19
- 239000003921 oil Substances 0.000 description 18
- 239000000654 additive Substances 0.000 description 16
- 230000008569 process Effects 0.000 description 14
- 230000000996 additive effect Effects 0.000 description 11
- 235000010216 calcium carbonate Nutrition 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000000314 lubricant Substances 0.000 description 5
- 238000005461 lubrication Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007909 solid dosage form Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000013538 functional additive Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 150000004867 thiadiazoles Chemical class 0.000 description 1
Landscapes
- Lubricants (AREA)
Abstract
The invention relates to special lubricating grease for a ball mill, which comprises the following components in parts by weight: base oil: 14.6 to 58.0 portions; basic grease: 25.0 to 45.0 portions; solid extreme pressure agent 1:1.0 to 3.0 portions; solid extreme pressure agent 2:2.0 to 3.0 portions; metal passivator: 0.1 to 0.3 portion; liquid extreme pressure agent: 1.5-3.5 parts; antirust agent: 0.4-0.6 part; tackifier: 10.0 to 30.0 portions; the base oil is a mixture of paraffin base oil 150BS and naphthenic base oil A1020; the basic grease is anhydrous calcium soap; the solid extreme pressure agent 1 is a mixture of calcium carbonate with particle size of 2-3 microns and less than 0.1 micron. The solid extreme pressure agent 2 is one or a mixture of colloidal graphite or colloidal molybdenum disulfide. The open gear is a composite product with higher reliability, improves the low-temperature pumping performance, improves the tooth surface temperature rise, has better environmental protection and cost performance, and prolongs the service life of the open gear of the ball mill.
Description
Technical Field
The invention relates to the technical field of lubricating grease, and particularly relates to special lubricating grease for a ball mill and a preparation method thereof.
Background
The special lubricating grease for the ball mill is used for lubricating low-speed, heavy-load and impact-load open gears. The open gear can transmit very high torque, and the tooth surface bears extremely high stress during starting, running and stopping and is in a mixed friction state. The lubricating effect of the open gear of the ball mill is closely related to the type of a lubricant, a lubricating system, the design, the processing, the material and the assembly condition of the gear. The common types of the open gear lubricant comprise a high viscosity oil type, a solid dosage form, a compound type, a solvent dilution type and the like, and from the lubricating point of view, the open gear lubricant provides effective lubrication protection by a proper lubricant and a reasonable lubricating mode, and is one of methods for prolonging the service life of an open gear. The open gear of the ball mill has the disadvantages of large gear size, high tooth surface roughness and harsh working environment (such as dust, ore pulp and impact load), and various problems frequently occur in the running process, such as the problems of low-temperature pumping of lubricant, environmental pollution, tooth surface temperature rise, pitting corrosion and the like, so that the service life of the gear equipment is shortened.
Disclosure of Invention
The invention aims to solve the technical problem of providing special lubricating grease for a ball mill, which is suitable for lubricating an open gear of the ball mill. The product has stable lubricating oil film; excellent high and low temperature flow properties; the tooth surface lubrication can be controlled in a proper temperature rise range, and the bearing capacity is good under the impact load; good high temperature performance; the service life of the gear can be effectively prolonged.
In order to achieve the purpose, the invention adopts the following technical scheme:
the special lubricating grease for the ball mill comprises the following components in parts by weight:
base oil: 14.6 to 58.0 portions;
basic grease: 25.0 to 45.0 portions;
solid extreme pressure agent 1:1.0 to 3.0 portions;
solid extreme pressure agent 2:2.0 to 3.0 portions;
metal passivator: 0.1 to 0.3 portion;
liquid extreme pressure agent: 1.5-3.5 parts;
antirust agent: 0.4 to 0.6 portion;
tackifier: 10.0 to 30.0 portions;
the base oil is a mixture of paraffin base oil 150BS and naphthenic base oil A1020, and the kinematic viscosity at 40 ℃ is 900-1000mm 2 /s；
The base grease is anhydrous calcium soap, the base oil in the anhydrous calcium soap is a mixture of paraffin base oil 150BS and naphthenic base oil A1020, the weight percentage of the base grease is more than or equal to 80 percent, the dropping point of the anhydrous calcium soap is more than 140 ℃, and the working cone penetration requirement is 220-250 (0.1 mm).
The solid extreme pressure agent 1 is calcium carbonate with the particle size of 2-3 microns and less than 0.1 micron, and is prepared by mixing the following components in percentage by weight: 2 weight ratio of the mixture.
The solid extreme pressure agent 2 is one or a mixture of colloidal graphite or colloidal molybdenum disulfide.
The metal deactivator is a thiadiazole derivative.
The liquid extreme pressure agent is sulfurized isobutylene.
The rust inhibitor is zinc naphthenate.
The tackifier is polyisobutylene.
A preparation method of special lubricating grease for a ball mill comprises the following steps:
1) Preparing base oil: according to the following steps: 1 part by weight of paraffin-based base oil 150BS and naphthenic base oil A1020 are respectively filtered by 200 meshes to a blending kettle, heated to 40-45 ℃, stirred and mixed for 50-60 minutes for later use;
2) Material dispersion: uniformly dispersing base grease and anhydrous calcium soap into the base oil obtained in the step 1) by using a high-speed disperser;
3) Primary heating and blending: heating the mixed material obtained in the step 2) to 80-90 ℃, sequentially adding a liquid extreme pressure agent, a metal passivator and an antirust agent, mixing and stirring, and filtering for 60-90 minutes by a 200-mesh sieve;
4) And (3) secondary heating and blending: keeping the temperature of the mixed material obtained in the step 3) at 80-90 ℃, sequentially adding the solid extreme pressure agent 1 and the solid extreme pressure agent 2, mixing and stirring, and filtering for 90-120 minutes by a 300-mesh sieve;
5) Heating and blending for three times: keeping the temperature of the mixed material obtained in the step 4) at 80-90 ℃, adding a tackifier, and circularly stirring for 60-90 minutes without a filter screen;
6) Degassing and packaging: transferring the lubricating grease obtained in the step 5) to a degassing kettle for degassing, filtering and packaging.
Compared with the prior art, the invention has the beneficial effects that:
the open gear is a composite product with higher reliability, improves the low-temperature pumping performance, improves the tooth surface temperature rise, has better environmental protection and cost performance, and prolongs the service life of the open gear of the ball mill.
The base oil is selected from high-viscosity paraffin base oil and hydrogenated naphthenic base oil which are compounded for use, the purpose is to ensure the thickness of an oil film, but no solvent is added, the two base oils are matched with anhydrous calcium soap for use, the low-temperature performance is improved from the structure of soap fiber, and the soap fiber can have a certain thickness of the oil film. The solvent type product has the greatest defects that the solvent oil volatilizes along with the rise of the temperature during use, causes environmental pollution, is not suitable for long-term use and causes unpredictable damage to a human body. The two types of base oil are different and have different effects, the paraffin base oil ensures that soap fibers are neat, the hydrogenated naphthenic base oil is better in low-temperature type, and the final finished product is better in low-temperature pumping property.
The base grease adopts anhydrous calcium soap, and the base oil used for producing the anhydrous calcium soap is consistent with the base oil used in the application, namely paraffin base oil and hydrogenated naphthenic base oil. The base oil for producing the anhydrous calcium soap is the same as the base oil, the mutual integration is better, and in the lubricating grease blending process, the base oil can enter different positions in soap fibers through different processes. When the special lubricating grease for the ball mill is used, proper oil separation is ensured at different temperatures, and the additives in the oil are taken out to play a role.
The solid extreme pressure agent 1 is compounded by two calcium carbonates with different particle sizes, and aims to meet the requirements under different working conditions, including higher and more reliable bearing capacity under high load, and once the tooth surface is subjected to pitting corrosion, the two calcium carbonates can fill and repair the pitting corrosion part in time, so that the enlargement is avoided, and the service life of the gear is prolonged.
In the process design, the on-site pneumatic pump jet type oil feeding mode is fully considered. Whether the state of the lubricating grease is completely uniform is a key factor of whether the lubricating grease can completely reach a lubricating point, two treatment modes are respectively carried out on the process design in order to ensure the absolute uniformity of the lubricating grease, and a high-speed disperser is used for ensuring the complete uniform dispersion of the lubricating grease into the base oil; aiming at the dispersion of the liquid agent, a high-number filtration mode is adopted, and the filtration time is required to be 60-90 minutes; and aiming at the dispersion of the solid extreme pressure agent, a high-mesh filtering mode is also adopted, the mesh reaches 300, the filtering time is 90-120 minutes, and the calcium carbonate with different particle sizes is ensured to be uniformly dispersed in the material.
The viscosity increasing effect of the tackifier is fully considered in the process design, a filter-screen-free circulating stirring mode is adopted in the post-treatment process, the materials are uniformly dispersed, and the tackifier is better combined with the base oil and the additive, so that the viscosity of the whole base oil is improved, and a certain auxiliary effect is achieved on the extreme pressure performance. In terms of process, the process design and the formula raw materials in each step are complementary, and any change of the formula and the process can cause certain influence on the product performance.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The special lubricating grease for the ball mill comprises the following components in parts by weight:
base oil: 14.6 to 58.0 portions; the base oil is a mixture of paraffin base oil 150BS and naphthenic base oil A1020, and the kinematic viscosity at 40 ℃ is 900-1000mm 2 And(s) in the presence of a catalyst. Sufficient to maintain good lubrication must be presentSufficient oil film thickness. The viscosity of the base oil determines the thickness of an oil film, and the high-viscosity base oil is selected, so that the viscosity is high at high temperature, and the low-temperature pumping performance needs to be ensured.
Basic grease: 25.0 to 45.0 portions; the basic grease is anhydrous calcium soap of anhydrous calcium-based grease, and the working penetration is as follows: 220-250 (0.1 mm); the anhydrous calcium soap has excellent low-temperature fluidity and mechanical stability. The dropping point of the anhydrous calcium soap is more than 150 ℃, the tooth surface temperature of the open type gear of the ball mill in the running process is not more than 80 ℃, so the high-temperature performance of the anhydrous calcium soap completely meets the use requirement, and no function is wasted.
Solid extreme pressure agent 1:1.0 to 3.0 portions; the solid extreme pressure agent 1 is calcium carbonate with the grain diameter of 2-3 microns and less than 0.1 micron, and is prepared by mixing the following components in percentage by weight of 1:2 weight ratio of the mixture. The two kinds of particle size calcium carbonate are mutually matched when the running tooth surface of the open gear of the ball mill is occluded, so that the respective extreme pressure performance can be exerted when the temperature of the tooth surface is increased and the oil film is thinned under high load, and the calcium carbonate with different particle sizes can quickly fill the pitting corrosion part when the tooth surface is slightly pitting-corroded, thereby avoiding the pitting corrosion from expanding and having the effect of inhibiting the pitting corrosion.
Solid extreme pressure agent 2:2.0 to 3.0 portions; the solid extreme pressure agent 2 is colloidal graphite, colloidal molybdenum disulfide or a mixture of the two.
Metal passivator: 0.1 to 0.3 portion; the metal passivator is a thiadiazole derivative, and can reduce the activity of metal, reduce the oxidation catalysis of the metal on lubricating oil and inhibit corrosion.
Liquid extreme pressure agent: 1.5-3.5 parts; the liquid extreme pressure agent is sulfurized isobutylene, has low viscosity and excellent fluidity at low temperature, and can quickly enter a friction surface along with paraffin-based base oil 150BS with relatively low viscosity, so that equipment can still keep good lubrication at low temperature.
Antirust agent: 0.4 to 0.6 portion; the rust inhibitor is zinc naphthenate.
Tackifier: 10.0 to 30.0 portions; the tackifier is polyisobutylene PIB2400; the viscosity of the base oil at 40 ℃ reaches 1500-3500 mm by adding tackifier polyisobutylene PIB2400 2 /s。
A preparation method of special lubricating grease for a ball mill comprises the following steps:
1) Preparing base oil: according to the proportion of 1:1 part by weight of paraffin-based base oil 150BS and naphthenic base oil A1020 are respectively filtered by 200 meshes to a blending kettle, heated to 40-45 ℃, stirred and mixed for 50-60 minutes for later use;
2) Material dispersion: uniformly dispersing the metal calcium soap into the base oil obtained in the step 1) by using a high-speed disperser;
in the technical process, a high-speed disperser is used for uniformly dispersing the base grease into the base oil to form a uniform mixture, and the dispersion is poor, so that the pumping performance is influenced. The base grease is uniformly dispersed in the oil, and the oil enters the base grease, so that support is provided for the dispersion and adhesion of the solid additive and the liquid additive in the subsequent working procedure.
3) Primary heating and blending: heating the mixed material obtained in the step 2) to 80-90 ℃, sequentially adding a liquid extreme pressure agent, a metal passivator and an antirust agent, mixing and stirring, and filtering for 60-90 minutes by a 200-mesh sieve;
the procedure requires 200 mesh filtration at 80-90 deg.C for a long time, and aims to improve the adhesion of liquid additive, dissolve the additive in paraffin-based base oil 150BS, and keep the characteristics of the grease as the base oil enters into the base grease.
The purpose of this step is to ensure that when the grease is used, the proper oil separation is carried out and the additive is released from the oil to play a role. The paraffin-based base oil 150BS was combined in consideration of the problem that the naphthenic base oil a1020 having a high viscosity was poor in solubility of additives. The performance of the liquid additive is superior to that of high viscosity oil type products.
4) And (3) secondary heating and blending: keeping the temperature of the mixed material obtained in the step 3) at 80-90 ℃, sequentially adding the solid extreme pressure agent 1 and the solid extreme pressure agent 2, mixing and stirring, and filtering for 90-120 minutes by a 300-mesh sieve;
the procedure continuously improves the filtering mesh number and time, carries out accumulative dispersion, improves the efficiency and achieves the ideal dispersion effect. The purpose of increasing the filtration mesh number again is to disperse the two types of additives in the system in a layered manner, and the solid additive should wrap the base grease but not the liquid additive. The correct material adding sequence can greatly improve the quality stability of products, different additives play a role in different working conditions and are matched with each other, the process design fully considers the theory that the composite product can not be separated from oil lubrication, when a slight load occurs, the base grease is taken as a sponge body to properly separate oil in different working conditions, and the base oil carries the liquid additive to play a role in avoiding the temperature rise of the tooth surface; when heavy load occurs, the liquid agent cannot bear, the base grease carries the solid additive to play a role, and the pitting corrosion of the tooth surface is avoided. The two additives are better matched, and the thickness of the tooth surface oil film is improved to be higher than that of a solid dosage form in the aspects of temperature rise and extreme pressure performance.
5) Heating and blending for three times: keeping the temperature of the mixed material obtained in the step 4) at 80-90 ℃, adding tackifier polyisobutylene, and circularly stirring for 60-90 minutes without a filter screen;
the working procedure does not carry out filtration treatment any more, only stirring is selected, the tackifier needs to keep the original structure of the tackifier not to be damaged, the cofferdam effect of the tackifier is exerted to fix the whole system, and the functional additive is not allowed to run off when needing to act, so that the function of the tackifier cannot be exerted.
6) Degassing and packaging: transferring the lubricating grease obtained in the step (5) to a degassing kettle for degassing, filtering and packaging.
[ examples ] A method for producing a compound
In this embodiment, the weight ratio of each component in the grease composition is shown in table 1:
table 1:
in this embodiment, the preparation method of the special grease for the ball mill includes the following steps:
1) Preparing base oil: the paraffin-based base oil 150BS and the naphthenic base oil A1020 are respectively filtered by a 200-mesh filter, 1:1, mixing for standby;
2) Material dispersion: uniformly dispersing anhydrous calcium soap into the mixed base oil obtained in the step 1) by using a high-speed disperser;
3) Primary heating and blending: heating the mixed material obtained in the step 2) to 80-90 ℃, sequentially adding sulfurized isobutylene T321, thiadiazole derivative T561 and zinc naphthenate, mixing and stirring, and filtering;
4) And (3) secondary heating and blending: keeping the temperature of the mixed material obtained in the step 3) at 80-90 ℃, sequentially adding a mixture of calcium carbonate, colloidal graphite and colloidal molybdenum disulfide or colloidal graphite or colloidal molybdenum disulfide, mixing, stirring and filtering;
5) Heating and blending for three times: keeping the temperature of the mixed material obtained in the step 4) at 80-90 ℃, adding a tackifier polyisobutylene PIB2400, and circularly stirring without a filter screen;
6) Degassing and packaging: transferring the lubricating grease obtained in the step (4) to a degassing kettle for degassing, filtering and packaging.
The process parameters of the steps 3) to 4) are shown in table 2;
table 2:
and (3) product performance testing:
the lubricating grease special for the ball mill prepared in the 8 embodiments is respectively tested and evaluated by adopting the following testing equipment, and the main testing equipment and the testing method are as follows: flow pressure (DIN 50805); four ball machine sintering load (SH/T0202).
The test results are shown in the following table:
although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The special lubricating grease for the ball mill is characterized in that the lubricating grease composition comprises the following components in parts by weight:
base oil: 14.6 to 58.0 portions;
basic grease: 25.0 to 45.0 portions;
solid extreme pressure agent 1:1.0 to 3.0 portions;
solid extreme pressure agent 2:2.0 to 3.0 portions;
metal passivator: 0.1 to 0.3 portion;
liquid extreme pressure agent: 1.5-3.5 parts;
antirust agent: 0.4-0.6 part;
tackifier: 10.0 to 30.0 portions;
the base oil is a mixture of paraffin base oil 150BS and naphthenic base oil A1020, and the kinematic viscosity at 40 ℃ is 900-1000mm 2 /s；
The base grease is anhydrous calcium soap, the base oil in the anhydrous calcium soap is a mixture of paraffin base oil 150BS and naphthenic base oil A1020, the weight percentage of the base grease is more than or equal to 80 percent, the dropping point of the anhydrous calcium soap is more than 140 ℃, and the working cone penetration requirement is 220-250 (0.1 mm);
the solid extreme pressure agent 1 is calcium carbonate with the particle size of 2-3 microns and less than 0.1 micron, and is prepared by mixing the following components in percentage by weight: 2 weight ratio of the mixture;
the solid extreme pressure agent 2 is one or a mixture of colloidal graphite or colloidal molybdenum disulfide.
2. The special grease for the ball mill as claimed in claim 1, wherein the metal deactivator is a thiadiazole derivative.
3. The special grease for ball mills according to claim 1, wherein the liquid extreme pressure agent is sulfurized isobutylene.
4. The special grease for ball mills according to claim 1, wherein the rust inhibitor is zinc naphthenate.
5. The special grease for ball mills as claimed in claim 1, wherein the tackifier is polyisobutylene.
6. The preparation method of the special lubricating grease for the ball mill according to claim 1, characterized by comprising the following steps:
1) Preparing base oil: according to the following steps: 1 part by weight of paraffin-based base oil 150BS and naphthenic base oil A1020 are respectively filtered by 200 meshes to a blending kettle, heated to 40-45 ℃, stirred and mixed for 50-60 minutes for later use;
2) Material dispersion: uniformly dispersing the base grease anhydrous calcium soap into the base oil obtained in the step 1) by using a high-speed disperser;
3) Primary heating and blending: heating the mixed material obtained in the step 2) to 80-90 ℃, sequentially adding a liquid extreme pressure agent, a metal passivator and an antirust agent, mixing and stirring, and filtering for 60-90 minutes by a 200-mesh sieve;
4) And (3) secondary heating and blending: keeping the temperature of the mixed material obtained in the step 3) at 80-90 ℃, sequentially adding the solid extreme pressure agent 1 and the solid extreme pressure agent 2, mixing and stirring, and filtering for 90-120 minutes by a 300-mesh sieve;
5) Heating and blending for three times: keeping the temperature of the mixed material obtained in the step 4) at 80-90 ℃, adding a tackifier, and circularly stirring for 60-90 minutes without a filter screen;
6) Degassing and packaging: transferring the lubricating grease obtained in the step 5) to a degassing kettle for degassing, filtering and packaging.
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| CN202211638826.1A CN115820324B (en) | 2022-12-20 | 2022-12-20 | Special lubricating grease for ball mill and preparation method thereof |
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| CN202211638826.1A CN115820324B (en) | 2022-12-20 | 2022-12-20 | Special lubricating grease for ball mill and preparation method thereof |
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| CN115820324A true CN115820324A (en) | 2023-03-21 |
| CN115820324B CN115820324B (en) | 2024-01-26 |
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| CN111662767A (en) * | 2020-06-12 | 2020-09-15 | 辽宁海华科技股份有限公司 | Sizing machine lubricating grease and preparation method thereof |
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| CN111100743A (en) * | 2019-12-26 | 2020-05-05 | 辽宁海华科技股份有限公司 | Low-temperature long-life extreme pressure lubricating grease and preparation method thereof |
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