Composite calcium sulfonate type railway wheel rail lubricating grease and preparation method thereof

A technology for compounding calcium sulfonate and synthesizing calcium sulfonate, applied in the field of lubricating grease, can solve the problems of frequent grease spraying, reducing the life of wheel rims and curved outer rails, wear of wheel-rail rims and curved rails, etc. delivery and jetting ability, extended effective lubrication time, and the effect of a wide operating temperature range

Active Publication Date: 2020-08-07
无锡中石油润滑脂有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the lubricating greases for railway wheels and rails are mostly based on extreme pressure lithium-based greases or graphite lithium-based greases or molybdenum disulfide lithium-based greases. The phenomenon of loss or thinning, short service life, frequent grease injection, severe wear of the wheel flange and the side of the curved rail due to lack of sufficient lubrication of the wheel rail, reduces the service life of the wheel flange and the curved outer rail, and increases the maintenance cost of the line locomotive. Affect the normal operation of the train

Method used

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  • Composite calcium sulfonate type railway wheel rail lubricating grease and preparation method thereof
  • Composite calcium sulfonate type railway wheel rail lubricating grease and preparation method thereof
  • Composite calcium sulfonate type railway wheel rail lubricating grease and preparation method thereof

Examples

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Embodiment 1

[0030] Embodiment 1: a kind of composite calcium sulfonate type railway wheel and rail lubricating grease comprises the following components: 40kg of high base value synthetic calcium sulfonate with a total base value of 400mgKOH / g, and a kinematic viscosity of 40°C is 82.01mm 2 / s, 200kg of 500N base oil with a pour point of -35°C, 0.40kg of water, 0.6kg of a mixture of n-butanol and ethylene glycol, 0.9kg of dodecylbenzenesulfonic acid, 0.40kg of calcium hydroxide, 0.53kg of boric acid, Dodecyl hydroxystearic acid 1.10kg, N-phenyl-α-naphthylamine 1.20kg, benzotriazole 0.72kg, polytetrafluoroethylene 2.40kg.

[0031] The preparation method of composite calcium sulfonate type railway wheel and rail grease comprises the following steps:

[0032] S1. Prepare an atmospheric pressure reactor with a volume of 300L, heating, cooling and triple stirring as a container, add 40kg of high alkali value synthetic calcium sulfonate with a total alkali value of 400mgKOH / g and a kinematic vi...

Embodiment 2

[0038] Embodiment 2: a kind of compound calcium sulfonate type railway wheel and rail lubricating grease, comprise following components: total base value is 380mgKOH / g synthetic calcium sulfonate 60kg, 40 ℃ kinematic viscosity is 82.01mm 2 / s 240kg of 500N base oil with a pour point of -35°C, 0.44kg of water, 0.6kg of a mixture of n-butanol and ethylene glycol, 0.90kg of dodecylbenzenesulfonic acid, 0.40kg of calcium hydroxide, 0.53kg of boric acid, ten 1.10 kg of dihydroxystearic acid, 1.20 kg of N-phenyl-α-naphthylamine, 0.72 kg of benzotriazole, and 2.40 kg of polytetrafluoroethylene were added.

[0039] The preparation method of composite calcium sulfonate type railway wheel and rail grease comprises the following steps:

[0040] S1. Prepare an atmospheric pressure reactor with a volume of 300L, heating, cooling and triple stirring as a container, put 60kg of high alkali value synthetic calcium sulfonate with a total base value of 380mgKOH / g into the reactor, and add kinem...

Embodiment 3

[0046] Embodiment 3: a kind of compound calcium sulfonate type railway wheel and rail lubricating grease, comprise following components: total base value is 400mgKOH / g synthetic calcium sulfonate 60kg, 40 ℃ kinematic viscosity is 82.01mm 2 / s 300kg of 500N base oil with a pour point of -35°C, 0.60kg of water, 0.47kg of a mixture of n-butanol and ethylene glycol, 2.13kg of dodecylbenzenesulfonic acid, 0.60kg of calcium hydroxide, 0.80kg of boric acid, ten Dihydroxystearic acid 1.45kg, N-phenyl-α-naphthylamine 1.87kg, benzotriazole 1.08kg, polytetrafluoroethylene 3.61kg.

[0047] The preparation method of composite calcium sulfonate type railway wheel and rail grease comprises the following steps:

[0048] S1. Prepare a normal-pressure reactor with a volume of 500 L, heating, cooling and triple stirring as a container, and put into the reactor 60 kg of high-basic synthetic calcium sulfonate with a total base value of 400 mgKOH / g. The kinematic viscosity at 40 ° C is 82.01mm 2 ...

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Abstract

The invention relates to composite calcium sulfonate type railway wheel rail lubricating grease that comprises 10-30% of high-base-number calcium sulfonate, 65%-85% of base oil, 0.1%-0.6% of mixed alcohol, 0.2%-0.6% of organic acid, 0.2%-0.7% of 12-hydroxystearic acid, 0.1%-0.4% of boric acid, 0.1%-0.3% of calcium hydroxide, 0.3%-0.8% of antioxidant, 0.1%-0.4% of antirust agent and 0.8%-1.2% of solid additive. The percentage is the mass percentage of the total amount of the lubricating grease as a base number. The preparation method comprises the following steps: adding the high-base-number calcium sulfonate and the base oil into a reaction kettle, and fully stirring; adding water, alcohol and acid, heating to 80-89 DEG C, and keeping the constant temperature for 1-3 hours; adding calciumhydroxide, boric acid and 12-hydroxystearic acid, and compounding at 95-100 DEG C for 0.5-1 hour; raising the temperature to 130 to 150 DEG C and dehydrating; and cooling to 80-90 DEG C, adding an additive, shearing, homogenizing and degassing to obtain the product. According to the invention, the lubricating grease has excellent mechanical stability, extreme pressure antiwear property, water resistance, rust prevention and adhesion, is not hardened after long-term storage, can keep excellent pumpability and injection capacity, adapts to temperature change in south and north winter and summerin China, and can be used in all weathers.

Description

technical field [0001] The invention relates to the field of lubricating grease, in particular to a compound calcium sulfonate type railway wheel and rail lubricating grease and a preparation method thereof. Background technique [0002] During the operation of the railway locomotive, due to the tilt of the train during operation, the wheel rim is in contact with the inner side of the rail, resulting in frequent friction. Especially when the locomotive is running on a curved road section, due to centrifugal force, the wheels are extremely pressed against the rail, and the inner surface of the rail rubs against the wheel rim violently, causing severe wear and shortening the service life of the rail and the wheel. Lubricating the inner side of the rail and the edge of the wheel with grease is one of the most effective methods to reduce the friction between the wheel rim and the rail, reduce the power loss of the locomotive, improve the interaction between the wheel and rail, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/00C10M177/00C10N50/10C10N30/06C10N30/12C10N30/08C10N10/04
CPCC10M169/00C10M177/00C10M2203/1006C10M2219/0466C10M2201/02C10M2201/062C10M2201/087C10M2207/022C10M2207/021C10M2219/044C10M2207/128C10M2215/065C10M2215/223C10M2213/062
Inventor 刘大波杨晓钧华志宏褚铭铭安华瑞吕明文
Owner 无锡中石油润滑脂有限责任公司
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