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Ash-free anti-wear hydraulic oil

An anti-wear hydraulic oil, extreme pressure anti-wear technology, applied in the field of lubricating oil, can solve the problems of hydraulic system operation failure, poor thermal stability, corrosion of copper parts of plunger pumps, etc., to meet the requirements of low corrosion and anti-corrosion Abrasive requirements, the effect of good anti-wear performance

Inactive Publication Date: 2012-10-10
上海福岛新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when used in plunger pumps, ZDDP can cause corrosion to the copper parts of the plunger pump, resulting in worn plunger feet and cracked swashplates
In addition, due to the poor thermal stability of ZDDP, it is easy to generate sludge during the operation of the high-pressure hydraulic system, which will block the filter screen and cause the operation of the hydraulic system to fail.

Method used

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  • Ash-free anti-wear hydraulic oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1# Ashless anti-wear hydraulic oil, composed of the following components by weight:

[0024] base oil:

[0025] 95% ashless extreme pressure anti-wear additives for steam turbine oil with good oxidation stability and demulsibility: 3.0% AW-2 (S-P-N type): AW-3 (S-P type): AW-5 (P type ) Mixed by mass ratio 3:2:1 Metal deactivator: T551 and T561 mixed by mass ratio 1:1 0.09% Detergent and dispersant: DT-6 sulfurized calcium alkylphenate 0.01% Antioxidant: T531 Mixture with T501 at a mass ratio of 1:1 0.5% Antioxidant corrosion inhibitor: Dialkyl dithiophosphate 1.0% Rust inhibitor: Barium petroleum sulfonate T701 0.05% Viscosity index improver: OCP and PMA by mass ratio 15:2 composite agent 0.3% Antifoaming agent: methyl silicone oil 0.05%

[0026] The preparation method of the above-mentioned ashless anti-wear hydraulic oil composition, the steps are as follows:

[0027] Raise the temperature of the base oil to 85°C, control the stirring speed to 300r / min, stir for 3...

Embodiment 2

[0029] 2# Ashless anti-wear hydraulic oil, composed of the following components by weight:

[0030] base oil:

[0031] 94.9% ashless extreme pressure anti-wear additive for steam turbine oil with good oxidation stability and anti-emulsification properties:

[0032] AW-3 (S-P type): AW-5 (P type) mixture of mass ratio 5:2 2.6% metal deactivator: T551 and T561 mixture of mass ratio 2:1 0.8% detergent dispersant: DT -6 sulfurized alkylphenate calcium 0.03% Antioxidant: a mixture of T531 and T501 in a mass ratio of 1:2 0.6% antioxidative preservative: dialkyl dithiophosphate 0.5% antirust agent: basic dinonyl Barium naphthalene sulfonate T705 0.06% Viscosity index improver: OCP and PMA composite agent at a mass ratio of 9:2 0.5% Anti-foaming agent: methyl silicone oil 0.01%

[0033] The preparation method of the above-mentioned ashless anti-wear hydraulic oil composition, the steps are as follows:

[0034] Raise the temperature of the base oil to 75°C, control the stirring spee...

Embodiment 3

[0036] 3# Ashless anti-wear hydraulic oil, composed of the following components by weight:

[0037] base oil:

[0038] Turbine oil with good oxidation stability and emulsification resistance 92% ashless extreme pressure anti-wear additive: AW-3 (S-P type) 3% metal deactivator: T551 and T561 are mixed in a mass ratio of 1:2 The mixture of 2% detergent and dispersant: DT-6 sulfurized alkylphenate calcium 0.05% antioxidant: the mixture of T531 and T501 at a mass ratio of 2:1 1.0% antioxidant preservative: dialkyl dithiophosphate 0.82 % Antirust agent: Dodecenylsuccinic acid T746 0.08% Viscosity index improver: Compound agent of OCP and SD at a mass ratio of 11:2 1.0% Antifoaming agent: Methyl silicone grease 0.05%

[0039] The preparation method of the above-mentioned ashless anti-wear hydraulic oil composition, the steps are as follows:

[0040] Raise the temperature of the base oil to 80°C, control the stirring speed to 350r / min, stir for 4 hours, add antioxidants, anti-oxida...

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Abstract

The invention discloses ash-free anti-wear hydraulic oil. The ash-free anti-wear hydraulic oil consists of the following components in percentage by weight: 92 to 97 percent of base oil, 0.5 to 3 percent of ash-free extreme-pressure anti-wear additive, 0.01 to 2 percent of metal deactivator, 0.01 to 0.05 percent of purification dispersant, 0.1 to 1.0 percent of antioxidant, 0.5 to 1.0 percent of antioxidant preservative, 0.01 to 0.08 percent of antirusting agent, 0.1 to 1.0 percent of viscosity index improver and 0.01 to 0.05 percent of anti-foaming agent, wherein the base oil is steam turbine oil with relatively high oxidation stability and emulsification resistance; the ash-free extreme-pressure anti-wear additive is at least one of S-P-N, S-P and P type ash-free extreme-pressure anti-wear additives; and the purification dispersant is DT-6 sulfurized calcium alkyl phenolate. The ash-free anti-wear hydraulic oil has high wear resistance, oxidation resistance, hydrolytic stability and rust resistance, can meet the requirement of high abrasion resistance of vane pumps, and can also meet the requirement of low corrosivity of plunger pumps.

Description

technical field [0001] The invention belongs to the technical field of lubricating oil, and relates to a hydraulic oil, in particular to an ashless anti-wear hydraulic oil. Background technique [0002] Anti-wear hydraulic oil can be divided into two types: gray zinc type with zinc dialkyl dithiophosphate (ZDDP type) as the main agent, and ashless type (zinc-free) with sulfur, phosphorus, and nitrogen agents as the main agent. Gray zinc anti-wear hydraulic oil has good anti-wear properties and can meet the requirements of vane pumps. But when used in plunger pumps, ZDDP can cause corrosion to the copper parts of the plunger pump, which can lead to worn plunger feet and cracked swashplates. In addition, due to the poor thermal stability of ZDDP, it is easy to generate sludge during the operation of the high-pressure hydraulic system, which will block the filter screen and cause the operation of the hydraulic system to fail. As a branch of hydraulic oil, ashless anti-wear hy...

Claims

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Application Information

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IPC IPC(8): C10M161/00C10N30/06C10N30/08C10N30/12C10N30/00
Inventor 宋铁成马雪彦姬文琦宋传军
Owner 上海福岛新材料科技有限公司
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