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Modified gear oil

A gear oil and modification technology, which is applied in the petroleum industry, additives, lubricating compositions, etc., can solve the problems of friction coefficient reduction and cost increase

Active Publication Date: 2007-09-05
TIANJIN CHANYU SUPERHARD SCI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this paper, oil-soluble nano-copper is added to GL-5 gear oil, which can reduce the friction coefficient of the oil and the diameter of wear scar slightly; but the dissociation of the modifier occurs at 222 ° C, and the content of nano-copper is as high as 2%. , which increases the cost of oil several times

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Worm oil is one of the important branches of gear oil. The preparation of extreme pressure worm oil A: First, add 75kg of medium viscosity index MVI 150BS bright oil and 25kg of 750SN neutral oil into the blending kettle with agitator. Stir at 75-80°C for 1-2 hours, and blend into 460 base oil. Then add 450g of 102 detergent (calcium petroleum sulfonate with medium alkali value), 1080g of 202 anti-oxidant and anticorrosion agent (thiophosphobutyloctyl zinc salt), 270g of 1001 anti-emulsifier (condensate of amine and epoxy oxide), 270g of 901 anti-corrosion agent Foaming agent (methyl silicone oil) 1g, 405 oily agent (sulfurized olefin cottonseed oil-1) 1900g, 306 extreme pressure antiwear agent (tricresyl phosphate) 1100g, continue to keep warm and stir for 1-2 hours, and prepare N460 extreme pressure worm Oil. The mass fraction of oily agent and extreme pressure antiwear agent in oil is 2.86%.

[0025] Preparation of extreme pressure worm oil B: 206g of nano-carbon ...

Embodiment 2

[0028] The above two oils were still used for comparative experiments. Experimental equipment: VWA42 worm reducer produced by Tianjin Beixin Miniature Reducer Factory; use JC torque speed sensor to measure transmission torque, and use PC201 mechanical efficiency meter to test mechanical efficiency. The output torques are 4.0 and 14.0Nm, respectively. Using EPWO B with 0.2% nanodiamonds increased the mechanical efficiency by 2.84% over EPWO A in both load cases.

Embodiment 3

[0030] In Royal 85w / 140 synthetic gear oil C, nano-carbon (mass fraction is 0.1%) was added, wherein diamond accounted for 60%, and oil D was made.

[0031]Oil D and synthetic gear oil C were used for comparative experiments. Equipment: AW lubrication and wear testing machine. Start the motor, add 2 weights and remove the oil box, so that the friction pair is in an oil-poor state. The load without weights is 65.3N, and the load with each weight is 117.6N. Add a weight every 10sec after the equipment is running. Start timing after the 12th weight is added until it gets stuck, and compare the time intervals during the period. Gear oil C was 113 sec, while gear oil D with 0.1% nanodiamond added was 310 sec. The latter is 2.74 times that of the former.

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PUM

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Abstract

A modified gear oil can be used for extreme worm oil, open industrial gear oil and closed industrial gear oil in traffic transportation, machinery, metallurgical, chemical industries. In the mineral lube-oil or synthetic lube-oil, modified nano-carbon with average grain size 2-6nm is added as extreme anti-scuff agent and oily agent, quality fraction is 2X10-5-1X10-2, nano-diamond occupies 10-99%, wear rate is decreased by 46.7%, mechanical efficiency improves by 2.84%, polishing scratch depth is decreased from 4.94 mu m to 0.07 mu m.

Description

technical field [0001] The lubricant relates to a lubricant used in a gear system, which is a modified nano-diamond gear oil. technical background [0002] Gear oil is one of the three major varieties of lubricating oil, which plays a vital role in the power transmission of various equipment. Most gear oils use mineral oil as the base oil, but some also use synthetic oil as the base oil. In addition, various additives should be added, such as quiet dispersant, anti-oxidant and anti-corrosion agent, demulsifier, anti-foaming agent, oily agent and extreme pressure anti-wear agent. Since gears are under heavy loads during work, good extreme pressure and anti-wear properties are one of the most important characteristics of gear oils. The use of good gear oil can minimize galling, gluing, pitting and wear on the tooth surface. [0003] Generally, the oily agent will desorb from the tooth surface at about 100°C and cause the oil film to rupture, but the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M125/02C10N30/06C10N40/04
Inventor 张书达张文刚
Owner TIANJIN CHANYU SUPERHARD SCI TECH CO LTD
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