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75W-90 viscosity grade oil composition special for urban rail gear box

A composition and gear box technology, applied in the field of lubricating oil, can solve the problem that the lubricating oil of the gear box cannot be applied to the urban rail gear box and so on.

Active Publication Date: 2021-04-09
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the gearbox lubricating oil in the prior art cannot be applied to urban rail gearboxes, the present invention provides a special oil composition for urban rail gearboxes with a viscosity level of 75W-90

Method used

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  • 75W-90 viscosity grade oil composition special for urban rail gear box
  • 75W-90 viscosity grade oil composition special for urban rail gear box

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Embodiment 1

[0051] The invention relates to a 75W-90 viscosity level oil composition for urban rail gearboxes, comprising the following components in parts by weight:

[0052] 40 parts of synthetic oil PAO8, 15 parts of PAO40 and 10 parts of polyol ester;

[0053] Viscosity index improver polymethacrylate 20 parts, extreme pressure antiwear agent thiophosphoric acid double ester amine salt 0.5 parts, sulfurized olefin 6 parts, antiwear agent phosphite 3 parts, metal deactivator benzotriazole fatty amine 0.12 parts of salt, 3 parts of polyisobutylene succinimide as detergent and dispersant, 0.2 parts of dialkyl diphenylamine as antioxidant, 0.3 parts of condensate of amine and ethylene oxide as anti-emulsifier and 0.05 parts of non-silicon antifoaming agent .

Embodiment 2

[0055] The invention relates to a 75W-90 viscosity level oil composition for urban rail gearboxes, comprising the following components in parts by weight:

[0056] 30 parts of PAO6, 17 parts of PAO100, 8 parts of polyol ester and 8 parts of monoalkyl naphthalene;

[0057] Viscosity index improver polymethacrylate 23 parts, extreme pressure antiwear agent thiophosphoric acid complex ester amine salt 0.5 part, sulfurized olefin 6 parts, antiwear agent phosphite 3 parts, metal deactivator benzotriazole fatty amine 0.12 parts of salt, 3 parts of polyisobutylene succinimide as detergent and dispersant, 0.2 parts of dialkyl diphenylamine as antioxidant, 0.3 parts of condensate of amine and ethylene oxide as anti-emulsifier and 0.05 parts of non-silicon antifoaming agent .

Embodiment 3

[0059] The invention relates to a 75W-90 viscosity level oil composition for urban rail gearboxes, comprising the following components in parts by weight:

[0060] 40 parts of synthetic oil PAO8, 15 parts of PAO40 and 10 parts of polyol ester;

[0061] 20 parts of viscosity index improver polymethacrylate, 0.5 part of extreme pressure and antiwear agent amine phosphate, 5 parts of sulfurized olefin, 3 parts of antiwear agent thiophosphate, 0.12 part of metal deactivator benzotriazole fatty amine salt, 2 parts of polyisobutylene succinimide as detergent and dispersant, 0.3 part of di-tert-butyl p-cresol as antioxidant, 0.3 part of condensate of amine and ethylene oxide as anti-emulsifier and 0.05 part of non-silicon antifoaming agent.

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Abstract

The invention relates to the technical field of lubricating oil, in particular to a 75W-90 viscosity grade oil composition special for an urban rail gear box, and the oil composition comprises the following components by weight: 50-70 parts of synthetic base oil, 10-30 parts of a viscosity index improver, 3-10 parts of an extreme pressure agent composition, 0.1-0.14 part of a metal deactivator, 2-4 parts of a detergent dispersant, 0.15-0.25 part of an antioxidant, 0.2-0.4 part of a demulsifying agent and 0.03-0.07 part of a non-silicon anti-foaming agent. The extreme pressure agent composition comprises 0.4-0.6 part of an extreme pressure anti-wear agent, 4-7 parts of a sulfur-containing extreme pressure agent and 2-4 parts of a phosphorus-containing anti-wear agent. The composition has excellent extreme pressure anti-wear property and material compatibility, and excellent high and low temperature properties and shear stability, and can provide good lubrication protection for urban rail gear boxes. And moreover, the composition is stable in component sources, and the preparation method is simple.

Description

technical field [0001] The invention belongs to the technical field of lubricating oil, and in particular relates to a special oil composition for urban rail gearboxes with a viscosity grade of 75W-90. Background technique [0002] In recent years, my country's urban rail transit (hereinafter referred to as "urban rail") has developed rapidly, mainly including: subway, light rail, monorail, urban express rail, etc. The difference between urban rail vehicles and high-speed trains and other trains is that urban rail trains need to start and brake frequently during operation, which makes the urban rail gearbox load larger. If the lubrication conditions are poor, poor lubrication is prone to occur. It directly affects the safety, stability and reliability of urban rail transit train operation. In addition, urban rail gearboxes have high requirements on the long-term performance of lubricating oil products, mainly reflected in the need to still have good lubricating performance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N40/04C10N30/02C10N30/04C10N30/06C10N30/08C10N30/10C10N30/12
CPCC10M169/048C10M2205/0285C10M2207/2835C10M2209/08C10M2223/047C10M2219/022C10M2223/049C10M2215/223C10M2215/28C10M2215/064C10M2217/06C10M2203/065C10M2201/085C10M2207/026
Inventor 周少鹏王帅彪赵海鹏李万英王向阳龙茵张凯蛟孟震英许峥曹玉发冯会良
Owner CHINA PETROLEUM & CHEM CORP
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