The Influence of the Temperature Rise on the Sealing Performance of the Rotating Magnetic Fluid Seal

This paper, based on magnetic fluid dynamics, combined with the air leakage of sintering machine, proposes a new type of magnetic fluid sealing device in sintering machine. According to the sealing mechanism of MHD as well as Bernoulli equation, the sealing theory--pressure difference equation in static sealing by magnetic fluid is deduced for the actual model of sintering machine. By using ansys finite element simulation software, the two-dimensional numerical simulation of thermal magnetic- coupling inside of sealing device is set up, the effects of different temperature on the magnetic properties are analyzed and the best sealing performance is found, that is when the edge temperature of the sealing device is controlled from 30°C to 80°C.

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Analysis of Split Magnetic Fluid Plane Sealing Performance

Journal of Magnetics ◽

10.4283/jmag.2017.22.1.133 ◽

2017 ◽

Vol 22 (1) ◽

pp. 133-140 ◽

Cited By ~ 1

Author(s):

Hui-tao Zhang ◽

De-cai Li

Keyword(s):

Magnetic Fluid ◽

Sealing Performance

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Winding Temperature Rise Field Synergy Analysis of Nano-two-phase Magnetic Fluid Transformer

10.1109/spies52282.2021.9633897 ◽

2021 ◽

Author(s):

Yongteng Jing ◽

Jinglin Cao ◽

Yan Li ◽

Dongxue Li ◽

Qiang Ma

Keyword(s):

Magnetic Fluid ◽

Temperature Rise ◽

Field Synergy ◽

Two Phase

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Magnetic Fluid Lubrication and Sealing Performance of Mining Belt Conveyor Roller

Journal of Mechanical Engineering ◽

10.3901/jme.2021.21.211 ◽

2021 ◽

Vol 57 (21) ◽

pp. 211

Keyword(s):

Magnetic Fluid ◽

Belt Conveyor ◽

Sealing Performance ◽

Conveyor Roller

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Sealing Performance of a Magnetic Fluid Seal for Rotary Blood Pumps

Artificial Organs ◽

10.1111/j.1525-1594.2009.00899.x ◽

2009 ◽

Vol 33 (9) ◽

pp. 770-773 ◽

Cited By ~ 6

Author(s):

Yoshinori Mitamura ◽

Sayaka Takahashi ◽

Kentaro Kano ◽

Eiji Okamoto ◽

Shun Murabayashi ◽

...

Keyword(s):

Magnetic Fluid ◽

Sealing Performance ◽

Blood Pumps ◽

Rotary Blood Pumps

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A magnetic super lattice

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100126597 ◽

1987 ◽

Vol 45 ◽

pp. 360-361 ◽

Cited By ~ 1

Author(s):

M.D. Bentzon ◽

J. v. Wonterghem ◽

A. Thölén

Keyword(s):

Thermal Decomposition ◽

Oleic Acid ◽

Magnetic Fluid ◽

Magnetic Particles ◽

Carbon Film ◽

Thick Layer ◽

Amorphous Iron ◽

Super Lattice ◽

Carrier Liquid ◽

Median Diameter

We report on the oxidation of a magnetic fluid. The oxidation results in magnetic super lattice crystals. The “atoms” are hematite (α-Fe2O3) particles with a diameter ø = 6.9 nm and they are covered with a 1-2 nm thick layer of surfactant molecules.Magnetic fluids are homogeneous suspensions of small magnetic particles in a carrier liquid. To prevent agglomeration, the particles are coated with surfactant molecules. The magnetic fluid studied in this work was produced by thermal decomposition of Fe(CO)5 in Declin (carrier liquid) in the presence of oleic acid (surfactant). The magnetic particles consist of an amorphous iron-carbon alloy. For TEM investigation a droplet of the fluid was added to benzine and a carbon film on a copper net was immersed. When exposed to air the sample starts burning. The oxidation and electron irradiation transform the magnetic particles into hematite (α-Fe2O3) particles with a median diameter ø = 6.9 nm.

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