Search

CN-121991748-A - Lubricating oil composition special for aluminum bronze turbine worm and preparation method thereof

CN121991748ACN 121991748 ACN121991748 ACN 121991748ACN-121991748-A

Abstract

The application relates to the field of lubricating grease, and particularly discloses a lubricating oil composition special for an aluminum bronze turbine worm and a preparation method thereof. The lubricating oil composition special for the aluminum bronze turbine worm comprises, by weight, 30-40 parts of trimethylolpropane ester, 21.4-47.19 parts of refined mineral oil, 20-30 parts of tackifier, 1-2.5 parts of extreme pressure antiwear agent, 1-2.5 parts of oiliness agent, 0.3-1.2 parts of oil-soluble molybdenum salt, 0.3-1.5 parts of antioxidant, 0.2-0.8 part of corrosion inhibitor and 0.01-0.1 part of defoamer. The lubricating oil disclosed by the application has the advantages of strong applicability to a turbine and a worm, good lubricity, extreme pressure property, water separation property and oxidation resistance, and capability of effectively reducing the abrasion of the turbine and the worm.

Inventors

  • CAO JIE

Assignees

  • 湖北博达特种润滑剂有限公司

Dates

Publication Date
20260508
Application Date
20251222

Claims (10)

  1. 1. The lubricating oil composition special for the aluminum bronze turbine worm is characterized by comprising, by weight, 30-40 parts of trimethylolpropane ester, 21.4-47.19 parts of refined mineral oil, 20-30 parts of tackifier, 1-2.5 parts of extreme pressure antiwear agent, 1-2.5 parts of oiliness agent, 0.3-1.2 parts of oil-soluble molybdenum salt, 0.3-1.5 parts of antioxidant, 0.2-0.8 part of corrosion inhibitor and 0.01-0.1 part of defoaming agent.
  2. 2. The lubricating oil composition special for the aluminum bronze turbine worm according to claim 1, wherein the extreme pressure antiwear agent is at least one selected from triphenyl thiophosphate, ammonium phosphate and ammonium thiophosphate; The oily agent is at least one selected from dimer acid, glycol oleate and benzotriazole amine salt; the oil-soluble molybdenum salt is selected from at least one of molybdenum oxo dialkyl dithiophosphate and molybdenum dialkyl dithiocarbamate.
  3. 3. The lubricating oil composition special for aluminum bronze turbine worms according to claim 2, characterized in that the mass ratio of triphenyl thiophosphate, dimer acid and dialkyl molybdenum oxide dithiophosphate is 1.5:1.5:0.5.
  4. 4. The lubricating oil composition special for the aluminum bronze turbine worm, as set forth in claim 1, is characterized in that a solid lubricant is further added into the lubricating oil composition, the mass ratio of the solid lubricant to the extreme pressure antiwear agent is 1-1.5:1.5, and the solid lubricant is g-C 3 N 4 /sodium disilicate composite material.
  5. 5. The lubricating oil composition for aluminum bronze turbine worms according to claim 4 characterized in that the g-C 3 N 4 /sodium disilicate composite also contains zinc sulfide.
  6. 6. The lubricating oil composition special for the aluminum bronze turbine worm, as set forth in claim 1, characterized in that the trimethylolpropane ester is prepared by esterification of saturated/unsaturated fatty acid containing C12-C18 and trimethylolpropane, and has a kinematic viscosity of 40-100mm 2 /s at 40 ℃ and a viscosity index of not less than 120.
  7. 7. The lubricating oil composition for aluminum bronze turbine worm according to claim 1, wherein the refined mineral oil is a deep hydroisomerized dewaxed base oil having a kinematic viscosity of 80-120mm 2 /s at 40 ℃.
  8. 8. The lubricating oil composition special for aluminum bronze turbine worms according to claim 1 characterized in that the tackifier is at least one selected from polyisobutylene and ethylene propylene rubber and has a 100 ℃ kinematic viscosity of 800-1500mm 2 /s.
  9. 9. The lubricating oil composition special for the aluminum bronze turbine worm according to claim 1, wherein the defoaming agent is one or more selected from the group consisting of a silicone type defoaming agent and a polyether modified silicone oil defoaming agent; The corrosion inhibitor is selected from at least one of benzotriazole, benzotriazole derivatives and thiadiazole derivatives; the antioxidant is at least one selected from N-phenyl-alpha-aniline, octyl butyl diphenylamine and diisooctyl diphenylamine.
  10. 10. The method for preparing the lubricating oil composition special for the aluminum bronze turbine worm according to any one of claims 1 to 9, which is characterized by comprising the following steps: Adding trimethylolpropane ester, refined mineral oil and tackifier into a reaction kettle, sealing and vacuumizing, heating to 110-120 ℃, vacuumizing and dehydrating at constant temperature for 1h, cooling to 75-85 ℃ at vacuum degree of more than or equal to-0.08 MPa, closing vacuum, opening a cover, adding an extreme pressure antiwear agent, an oiliness agent, oil-soluble molybdenum salt, an antioxidant, a corrosion inhibitor and a defoaming agent, stirring for 30min, filtering and circulating for 15-20min, filtering and discharging.

Description

Lubricating oil composition special for aluminum bronze turbine worm and preparation method thereof Technical Field The application relates to the technical field of lubricating grease, in particular to a lubricating oil composition special for an aluminum bronze turbine worm and a preparation method thereof. Background The turbine worm is driven, particularly, aluminum bronze is adopted as a driving system of a turbine material, and the turbine worm has the advantages of compact structure, stable driving, large driving ratio and the like, and is widely applied to heavy machinery in the industries of metallurgy, mines, lifting, chemical industry and the like. However, such conventional devices are often accompanied by high load, high impact, and low speed and heavy load conditions during movement, and due to severe sliding friction between the engaging flanks, the operating temperature may rise sharply, and the local temperature rise may exceed 100 ℃. Under the severe working conditions, the traditional lubrication mode, namely lubricating oil, exposes a plurality of defects which are difficult to overcome (1) the lubricating oil has poor leakage resistance, so that environmental pollution and resource waste are caused. In a continuous high-temperature working environment, the viscosity of the lubricating oil can be obviously reduced, the fluidity is enhanced, and the lubricating oil is extremely easy to leak from a sealing gap of equipment. The device and the surrounding environment can be seriously polluted, the lubricant is wasted, more importantly, the turbine, the worm and the supporting shaft cannot be effectively lubricated and protected due to oil shortage, further abrasion of the meshing pair is aggravated, the transmission precision is reduced, the vibration noise is increased, the turbine worm and the bearing are finally scrapped prematurely, the service life of the device is greatly shortened, and the maintenance cost is increased. And (2) the service life is short, and the comprehensive cost is high. The oxidation speed of the lubricating oil is increased at high temperature, the oil is extremely easy to age, and particularly under certain working conditions that water vapor or cooling water possibly contacts, the high-temperature lubricating oil can be emulsified, deteriorated and spoiled rapidly after rainwater, so that the basic lubricating performance of the lubricating oil is lost. In order to ensure the normal operation of the equipment, the new oil has to be frequently shut down and replaced, which not only increases the consumption cost of the lubricant, but also causes the loss of production efficiency and the rise of the manual maintenance cost. In view of the above related art, the inventors consider that developing a dedicated lubrication product that can overcome the above drawbacks and has excellent high temperature stability and leakage resistance can be a technical problem to be solved in the art. Disclosure of Invention The application provides a lubricating oil composition special for an aluminum bronze turbine worm and a preparation method thereof, aiming at improving high-temperature lubricity, leakage resistance, water resistance and long-service-life lubricity of a lubricating product. In a first aspect, the application provides a lubricating oil composition special for an aluminum bronze turbine worm, which adopts the following technical scheme: The lubricating oil composition special for the aluminum bronze turbine worm comprises, by weight, 30-40 parts of trimethylolpropane ester, 21.4-47.19 parts of refined mineral oil, 20-30 parts of tackifier, 1-2.5 parts of extreme pressure antiwear agent, 1-2.5 parts of oiliness agent, 0.3-1.2 parts of oil-soluble molybdenum salt, 0.3-1.5 parts of antioxidant, 0.2-0.8 part of corrosion inhibitor and 0.01-0.1 part of defoamer. By adopting the technical scheme, the matrix oil system is composed of the trimethylolpropane ester and the refined mineral oil PEI, the trimethylolpropane ester is synthetic ester base oil, has excellent heat stability and high viscosity index, has small viscosity reduction amplitude at high temperature, can better maintain oil film strength, prevents high-temperature viscosity reduction and is easy to leak, the refined mineral oil is used as auxiliary base oil for adjusting the overall viscosity of the lubricating oil, so that the lubricating oil has better high-temperature viscosity maintenance capability, the tackifier is a lubricating oil composition with extremely high adhesiveness and sealing property, is difficult to pass through a sealing gap Liu Cong, avoids pollution, waste and lubrication failure caused by leakage, ensures that the lubricating oil composition cannot be scattered or thrown off on a high-temperature and high-shear turbine worm meshing surface, further provides durable lubrication protection, prolongs the service life of the lubricating oil composition, effectively delays the oxidatio