Unlock instant, AI-driven research and patent intelligence for your innovation.

Special antiwear hydraulic-oil for shield

An anti-wear hydraulic oil and shield technology, applied in the field of hydraulic oil, can solve the problems that the anti-emulsification performance and anti-wear performance cannot fully meet the requirements, the operation requirements of the shield tunneling machine are not considered, and the shield tunneling machine cannot be used. , to achieve excellent anti-emulsification performance, good anti-oxidative stability, and ensure the effect of long-term performance

Active Publication Date: 2010-12-22
HAILIAN INST OF LUBRICATING MATERIALS SHANGHAI
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These products are generally formed by adding various additives to petroleum-based base oils. BP's products are mainly based on ultra-refined naphthenic petroleum distillates, adding an appropriate amount of tackifier, ashless anti-wear agent, antioxidant Anti-rust agent, anti-foaming agent and other components, the products produced by SHELL and Mobil use refined isoparaffin as base oil, add appropriate amount of ash anti-wear agent, antioxidant, anti-rust agent and anti-foaming agent, etc. Composition, its anti-emulsification performance and anti-wear performance can not fully meet the requirements
[0006] Chinese patent CN200410060691.0 discloses a green, clean, energy-saving and anti-wear hydraulic oil, which is characterized in that it is composed of hydrogenated mineral oil, refined vegetable oil, synthetic hydrocarbon and composite additives, and its composition and weight percentage are as follows: refined vegetable oil 20 -40% composite additive 1-3% synthetic hydrocarbon 5-15% hydrogenated mineral oil balance, the technology disclosed in this patent does not take into account the operational requirements of the shield tunneling machine and cannot be used for the shield tunneling machine;
The patented hydraulic oil is easy to cause equipment to rust, and it is easy to emulsify

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] formula:

[0040] The weight consumption of antirust agent alkenyl succinate is 0.03%;

[0041] The weight consumption of demulsifier amine and epoxide condensate is 0.1%;

[0042] The weight consumption of anti-wear agent high zinc anti-wear hydraulic oil compound (HITEC 522) is 0.9%;

[0043] Surplus is base oil, and described base oil: 150SN weight is 42%; 500SN weight is 56.97%, and oil grade is 46#;

[0044] The above-mentioned components are mixed and stirred evenly to obtain the product.

[0045] The relevant national standards were used for testing, and the results are shown in Table 1.

Embodiment 2

[0047] formula:

[0048] The weight consumption of antirust agent alkenyl succinate is 0.05%;

[0049] The demulsifier is selected from ethylene oxide and propane block ether, and the weight consumption is 0.002%.

[0050] The anti-wear agent is primary alkyl zinc dithiophosphate, and the consumption is 1.5% by weight,

[0051] The balance is base oil: 150SN weight consumption is 43%; 500SN weight consumption is 55.448%.

[0052] The brand name of the oil is 46#;

[0053] The above-mentioned components are mixed and stirred evenly to obtain the product.

[0054] The relevant national standards were used for testing, and the results are shown in Table 1.

[0055] Table 1

[0056]

[0057]

[0058]The products of Examples 1 and 2 were tested on the shield tunneling machine after 10 weeks of use, and the results are shown in Table 3.

[0059] table 3

[0060]

[0061] Antifoam (ml / ml)24℃

[0062] From the evaluation results of indust...

Embodiment 3

[0064] formula:

[0065] The weight percent consumption of antirust agent alkenyl succinate is 0.02%;

[0066] The demulsifier is ethylene oxide and propane block ether, and the consumption in weight percentage is 0.03%;

[0067] The anti-wear agent is long-chain primary alkyl zinc dithiophosphate, and the dosage is 1.0% by weight;

[0068] The balance is base oil: 150SN weight consumption is 45%; 500SN weight consumption is 53.95%.

[0069] The above-mentioned components are mixed and stirred evenly to obtain the product.

[0070] The relevant national standards are used for testing, and the results are shown in the table below:

[0071]

[0072]

[0073] The evaluation result of industrial trial production is as in Example 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a special antifriction hydraulic oil for tunnel shield, which is characterized in that: the hydraulic oil comprises the following components by weight percentage: 0.02 to 0.05 percent of antirust, 0.002 to 0.1 percent of demulsifying agent, 0.5 to 1.5 percent of antiwear agent and the rest is base oil; the antirust is alkenyl succinate, the demulsifying agent is chosen fromthe condensation substance of amine and epoxide or ethylene oxide block ether or propylene oxide block ether, the antiwear agent is chosen from high zinc antifriction hydraulic oil complexing agent, zinc primary alkyl dithiophosphate, long-chain zinc primary alkyl dithiophosphate or triorthocresol phosphate. The special antifriction hydraulic oil for the shield tunneling machine of the invention has excellent demulsibility and antifriction properties and excellent anti-oxidative stability during the course of application, acid number which slightly changes with the passage of time, can guarantee long-term application performance and meet the application requirements of equipment.

Description

technical field [0001] The invention relates to a hydraulic oil, in particular to a special hydraulic oil for shield tunneling. Background technique [0002] With the acceleration of urbanization in our country, various underground projects are increasing year by year. The past construction method of carrying people on shoulders can no longer meet the requirements of construction speed. The application of mechanical equipment and modern excavation equipment in underground projects is becoming more and more extensive. At present, the shield boring machine is the main equipment of the world's underground construction and excavation projects. Anti-wear hydraulic oil specially used for shield tunneling with high cleanliness is the main material of shield tunneling consumables. This oil has very strict requirements on particle pollutants (cleanliness). [0003] As the shield tunneling machine is a heavy-duty construction equipment with heavy load and high working pressure, the m...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C10M137/10C10M129/34C10M129/16C10N30/12C10N30/06
Inventor 王鹏
Owner HAILIAN INST OF LUBRICATING MATERIALS SHANGHAI