Magnetic fluid lubricating method

A magnetic fluid and magnetic field technology, applied in the direction of engine lubrication, bearings, engine components, etc., can solve the problems of low volatilization, long life, high saturated vapor pressure, and narrow operating temperature range that are difficult to meet, and achieve the elimination of volatilization loss, Slow down the loss and enhance the effect of adsorption strength

Inactive Publication Date: 2015-09-02
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

The magnetic fluid uses mineral oil or synthetic oil as the base carrier fluid, its saturated vapor pressure is relatively high, and the operating temperature range is narrow, obviously it is difficult to meet the basic requirements of low volatility in space and long life

Method used

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Embodiment Construction

[0027] The invention discloses a magnetic fluid lubrication method, which fully utilizes the zero volatilization of the ionic liquid-based magnetic fluid and the adsorption effect under the electromagnetic field, and specifically includes the following steps:

[0028] In step 1), the ionic liquid is used as the base carrier liquid to prepare the ionic liquid-based ferrofluid.

[0029] A typical ionic liquid series (such as imidazole ionic liquid) with excellent stability (such as wide temperature range, anti-oxidation, corrosion resistance) and lubricating properties is selected as the base carrier liquid to prepare a stable ionic liquid-based magnetic fluid.

[0030] Step 2), disposing the ionic liquid-based magnetic fluid on the surface of the friction pair.

[0031] The surface material of friction pair can choose ferromagnetic material and non-ferromagnetic material. Ferromagnetic materials include electrical pure iron and ordinary carbon steel. Electrical pure iron is a ...

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Abstract

The invention discloses a magnetic fluid lubricating method. The method includes: using ionic liquid as base carrier liquid to prepare ion-liquid-based magnetic fluid; arranging the ion-liquid-based magnetic fluid in the surface of a friction pair, applying a magnetic field to the surface of the friction pair to fix the ion-liquid-based magnetic fluid on the surface of the friction pair, wherein the direction of the magnetic field is parallel with the normal of the surface of the friction pair; applying an electric field to the surface of the friction pair, wherein the direction of the electric field is parallel with the normal of the surface of the friction pair. By the magnetic fluid lubricating method high in practical value, lubricating oil run-off and volatile loss of is reduced even eliminated.

Description

technical field [0001] The invention relates to the technical field of magnetic fluid lubrication, in particular to a magnetic fluid lubrication method. Background technique [0002] Current research reports indicate that a considerable proportion of failures of space mechanical components are related to lubrication problems. Lubricants in a space environment need to work in an ultra-high vacuum with a small amount and a long design life. Therefore, the volatilization loss and surface creep loss of space liquid lubricant are two important factors leading to the failure of space lubrication. [0003] Chinese Utility Model Patent No. 02288353.3 discloses a magnetic fluid lubricated sliding bearing. It utilizes the feature that magnetic fluid can be positioned and restricted in the desired position by an external magnetic field to achieve lubrication. The magnetic fluid uses mineral oil or synthetic oil as the base carrier fluid, its saturated vapor pressure is relatively hi...

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Application Information

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IPC IPC(8): F16C32/04F16N15/00
Inventor 柯和继黄巍王晓雷
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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