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1

Rösel, Sebastian, and Marion Merklein. "Flow Behaviour of Magnetorheological Fluids, Considering the Challenge of Sealing in Blank Hydroforming in the Flange Area with Rectangular Leakage Area Cross-Sections." Key Engineering Materials 473 (March 2011): 121–29. http://dx.doi.org/10.4028/www.scientific.net/kem.473.121.

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The need of light weight constructions and parts with tailored or even more homogeneous mechanical properties especially for structural components leads to the use of alternative forming technologies. These forming processes like sheet metal hydroforming are established to gain more flexibility and to increase the forming limits. But to apply this forming technology successfully, it is necessary to overcome some obstacles. One typical challenge for hydroforming of blanks, which has prevented further application of this technology, is the sealing of the cavity in the flange area. Nowadays there
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2

Peshin, Snehan, Derosh George, Roya Shiri, Lawrence Kulinsky, and Marc Madou. "Capillary Flow-Driven and Magnetically Actuated Multi-Use Wax Valves for Controlled Sealing and Releasing of Fluids on Centrifugal Microfluidic Platforms." Micromachines 13, no. 2 (2022): 303. http://dx.doi.org/10.3390/mi13020303.

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Compact disc (CD)-based centrifugal microfluidics is an increasingly popular choice for academic and commercial applications as it enables a portable platform for biological and chemical assays. By rationally designing microfluidic conduits and programming the disc’s rotational speeds and accelerations, one can reliably control propulsion, metering, and valving operations. Valves that either stop fluid flow or allow it to proceed are critical components of a CD platform. Among the valves on a CD, wax valves that liquify at elevated temperatures to open channels and that solidify at room temper
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3

Qing, Chuan, Xiaohui Zhang, Changdong Liu, Qiang Liu, and Hongzhe Gong. "Research and Application of Plugging Drilling and Completion Technology for Difficult Old Well in Changchun Gas Storage." Journal of Physics: Conference Series 2834, no. 1 (2024): 012074. http://dx.doi.org/10.1088/1742-6596/2834/1/012074.

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Abstract Changchun Gas Storage has been included in the 14th Five-Year Plan for the development of petroleum and natural gas in Jilin Province. Its smooth construction and safe operation are crucial to ensure the stable supply of natural gas in Changchun. Well X106F located in the construction area was abandoned in 1988 due to drilling tool falling and multiple salvage failures. In order to ensure the sealing and integrity of the gas storage, it is necessary to effectively plug the drilling cover. In view of the problems of low well history accuracy, poor well wall stability and difficulty in
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4

Matuszewski, Leszek, and Piotr Bela. "New Designs of Magnetic Fluid Seals for Reciprocating Motion." Polish Maritime Research 28, no. 4 (2021): 151–59. http://dx.doi.org/10.2478/pomr-2021-0057.

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Abstract The operating conditions of magnetic fluid seals during reciprocating motion are so different from those observed in rotating motion that the use of their conventional structures for reciprocating motion seals yields no good results. The analysis of the sealing mechanism of magnetic fluid seals in reciprocating motion shows that the operation of these seals is affected by the carry-over phenomenon and magnetic fluid film deformation in the sealing gap, which depends on the velocity of the reciprocating motion. The reduced amount of magnetic fluid in the sealing gap caused by the recip
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5

Fan, Chen, Zhang Chongfeng, and Yang Xiaolong. "Numerical analysis and experimental verification of magnetic fluid sealing for air cylinder in Aerospace Engineering." International Journal of Applied Electromagnetics and Mechanics 66, no. 4 (2021): 581–97. http://dx.doi.org/10.3233/jae-201572.

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In order to solve the problem of short service life (2 months) and zero leakage of air cylinder in aerospace engineering, this paper innovatively designs a magnetic fluid sealing device of air cylinder in aerospace engineering through magnetic circuit analysis and magnetic fluid sealing theory. The magnetic field finite element method is used to calculate the magnetic field distribution in the sealing gap under different key parameters such as the number of pole teeth, the height of the radial sealing gap, the thickness of the permanent magnet, the slot width, the ratio of pole piece height to
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6

Zhao, Meng, Shan Lin Jiang, and Cheng Jun Liu. "New Structure of Crossing Magnetic Poles on Magnetic Fluid Seals." Key Engineering Materials 562-565 (July 2013): 1393–96. http://dx.doi.org/10.4028/www.scientific.net/kem.562-565.1393.

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In order to improve the ability of magnetic fluid seals, the new structure of crossing magnetic poles on magnetic seals can be designed. The reluctivity of gap with the crossing magnetic pole is less than the reluctivity of gap without the crossing magnetic pole. The magnetic intensity in the gap can be bigger because of the crossing magnetic poles. According to the pressure formula of magnetic fluid seals, the pressure on the one side of magnetic fluid seals can be increased. The sealing capacity with the crossing magnetic pole is more than the sealing capacity without the crossing magnetic p
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7

Bai, Ming Hua, Qing Rong Liu, and Hong Liang Zhou. "Design of Magnetic Fluid Sealing Device and Computer Simulation in Sintering Machine." Advanced Materials Research 328-330 (September 2011): 2270–73. http://dx.doi.org/10.4028/www.scientific.net/amr.328-330.2270.

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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 prop
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8

He, Xinyue, Zhenggui Li, Jie Qing, Jie Min, Chuanshi Cheng, and Changrong Shen. "Thermal Characteristics Analysis and Experimental Study of Magnetic Fluid in Sealing Gap." Lubricants 13, no. 1 (2025): 33. https://doi.org/10.3390/lubricants13010033.

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The widespread application of magnetic fluid seals in mechanical devices highlights the significant impact of temperature on the stability of these sealing systems. This paper investigates the magnetic field characteristics and thermal properties of magnetic fluid in sealing devices through both numerical simulations and experimental methods. The effects of rotational speed, magnetic fluid solid content, and heating power on the magnetic fluid temperature of the magnetic sealing device were analyzed. The numerical simulation findings indicate that the viscosity the of magnetic fluid significan
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9

Xing, Fei Fei, De Cai Li, and Xiao Long Yang. "Experimental Study of Large Gap Magnetic Fluid Static Sealing." Key Engineering Materials 492 (September 2011): 283–86. http://dx.doi.org/10.4028/www.scientific.net/kem.492.283.

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A large gap structure device of the magnetic fluid static sealing have been designed, and this structure was made to test the anti-pressure, the experimental station and process was discussed, the factors that affect the experiment result were also been analyzed. The pressure capacity and the size of the leak rate have been measured when the sealing gap were 0.4mm, 0.5mm, 0.6mm and 0.7mm respectively. Experiments show that the design of the sealing structure can solve the problem of large gaps in the magnetic sealing, and for the gap of 0.4mm, its anti-pressure capacity is 70 percent more than
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10

ZHANG, Huitao. "Studies of Magnetic Fluid Plane Sealing in Split Sealing Device." Journal of Mechanical Engineering 54, no. 5 (2018): 149. http://dx.doi.org/10.3901/jme.2018.05.149.

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11

Xing, Fei Fei, De Cai Li, Wen Ming Yang, and Xiao Long Yang. "The Comparison of Magnetic Leakage of Different Teeth Structures in Magnetic Fluid Seal." Advanced Materials Research 197-198 (February 2011): 314–17. http://dx.doi.org/10.4028/www.scientific.net/amr.197-198.314.

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Based on the theoretical model, magnetic field distribution of rectangular teeth, two-sides dilated shape and one-side dilated shape teeth structure with common other conditions were calculated using finite element method when the sealing gap was 0.1mm and 0.12mm. The comparison of their results with the same sealing gap showed that rectangular teeth structure had the highest magnetic leakage. Moreover, the magnetic field distribution of sealing structures with rectangular stages on both the shaft and pole pieces under the same design and sealing gap were also calculated using the same method,
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12

Wang, Hujun, Zhongquan Gao, Xinzhi He, et al. "Performance of Magnetic Fluid and Back Blade Combined Seal for Sealing Water." Magnetochemistry 9, no. 2 (2023): 38. http://dx.doi.org/10.3390/magnetochemistry9020038.

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When sealing liquids with magnetic fluid, the interfacial stability problem caused by the interaction between the magnetic fluid and the sealed liquid leads to poor sealing performance. Centrifugal force is generated by the rotation of the sealed liquid in the back blade seal, which forms back pressure to reduce the load of the seal or prevents the sealed liquid from leaking. To reduce the influence of the shaft speed on the sealing performance, a combined magnetic fluid and back blade seal was designed for sealing liquids and a combined seal experiment stand was set up. Theoretical and experi
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13

Cheng, Jie, Zheng-Gui Li, Yang Xu, Wang-Xu Li, and Xin-Rui Li. "Study on the Unbalanced Curl Seal Failure of the Magnetorheological Fluid Sealing Device of the Hydraulic Turbine Main Shaft under Different Speed Abrupt Conditions." Processes 9, no. 7 (2021): 1171. http://dx.doi.org/10.3390/pr9071171.

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The fluid flow in the runner of a hydraulic turbine has serious uncertainties. The sealing failure of the magnetorheological (MR) fluid sealing device of the main shaft of the hydroturbine, caused by a sudden change in speed, has always been a difficult topic to research. This study first derives the MR fluid seal pressure and unbalanced curl equations of the hydroturbine main shaft, and then analyzes the seal pressure and friction heat under different rotational speed mutation conditions through experiments. After verification, the temperature field and magnetic field distribution of the MR f
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14

Bolotov, Alexander, and Georgy Burdo. "Magnetic fluid method for sealing liquid media." E3S Web of Conferences 383 (2023): 04081. http://dx.doi.org/10.1051/e3sconf/202338304081.

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Magnetic fluid seals for sealing gas environments are widely used in various industries due to their undeniable advantages. However, such seals are not capable of reliable sealing of liquid media with different polarities. The paper analyses physicochemical processes that lead to destructing magnetic fluid in a seal under the influence of a liquid medium in contact with it. There are results of experimental studies on sealing using magnetic seals of non-magnetic fluids with different polarity. The authors studied the tightness of a magnetic fluid seal capacity in contact with weakly polar liqu
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15

Tomioka, Jun, and Norifumi Miyanaga. "Blood sealing properties of magnetic fluid seals." Tribology International 113 (September 2017): 338–43. http://dx.doi.org/10.1016/j.triboint.2016.12.040.

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16

Zhang, Penggao, Boqin Gu, Jianfeng Zhou, and Long Wei. "Coupled heat transfer characteristics in a spiral groove mechanical seal lubricated by magnetic fluid." Industrial Lubrication and Tribology 71, no. 6 (2019): 758–65. http://dx.doi.org/10.1108/ilt-06-2018-0225.

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Purpose The purpose of this study is to investigate the heat transfer characteristics in a spiral groove mechanical seal lubricated by magnetic fluid. Design/methodology/approach The viscosity relationship of magnetic fluid in external electromagnetic field was deduced. The temperature distribution of sealing ring was calculated by the method of separation variables. Findings It has been found that the rotating ring absorbs most friction heat. The temperatures on the end faces of rotating ring and stationary ring decrease from inner radius to outer radius, the temperature of magnetic fluid fil
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17

Yang, Jixian, Decai Li, and Licong Jin. "Failure Mechanisms of Ester-Based Magnetic Fluid Seals at High Speeds: Thermal Dissipation and Fluid Loss." Magnetochemistry 11, no. 2 (2025): 18. https://doi.org/10.3390/magnetochemistry11020018.

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Magnetic fluid seals are well known for their zero-leakage performance but are limited at high rotational speeds due to heat generation and fluid loss. This study experimentally investigates the failure mechanisms of ester-based magnetic fluid seals at high speeds, specifically focusing on thermal dissipation and fluid loss. A custom-designed high-speed rotary seal test platform was developed, and experimental studies were conducted to evaluate sealing performance. Our results showed significant temperature increases and fluid loss at higher rotational speeds, with a noticeable fluid ejection
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18

Yang, Xiaolong, Yunyun Song, Peng Sun, and You Li. "Design and Experimental Study on Divergent Magnetic Fluid Seal with Large Clearance and Dual Magnetic Sources." Advances in Materials Science and Engineering 2022 (January 30, 2022): 1–11. http://dx.doi.org/10.1155/2022/4637689.

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In order to solve the leakage problem of rotating machinery under the condition of large clearance, a new type of divergent magnetic fluid sealing device with secondary magnetic source was designed. The magnetic field distribution in the clearance of the magnetic fluid seal was simulated by the finite element method of magnetic field, and the theoretical value of the sealing pressure resistance was calculated according to the pressure resistance theory of the divergent magnetic fluid seal. The influences of the volume of magnetic fluid injection, the number of teeth, the clearance, and the ecc
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19

Wang, Yan, Shuoshuo Niu, Jiahao Zhang, et al. "Development Status of Dynamic Sealing Technology and Discussion on Advanced Sealing Technologies." Lubricants 13, no. 1 (2025): 11. https://doi.org/10.3390/lubricants13010011.

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This paper reviews the current state of dynamic sealing technologies, examining the challenges faced by conventional sealing methods under complex working conditions, such as high temperature, high pressure, and corrosive environments. It also provides a concise overview of the status and developmental trends in sealing inspection technologies. From the perspective of obstruction mechanisms, this study reinterprets the concept of sealing science by redefining the classification of sealing types based on solid-phase medium obstruction, fluid hydrostatic and hydrodynamic obstruction, fluid pumpi
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20

Bai, Ming Hua, and Hong Liang Zhou. "Numerical Simulation of Magnetic Fluid Used in Sintering and Cooling Equipments Seals as a Functional Material." Advanced Materials Research 239-242 (May 2011): 3096–99. http://dx.doi.org/10.4028/www.scientific.net/amr.239-242.3096.

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Magnetic fluid as a functional material can produce volume force under external magnetic field, for the purpose of controlling the magnetic fluid flow state in the non-magnetic sealing groove with external magnetic field, the volume force is written as a function form of AZ to do with the numerical simulation of magnetic fluid flow in the sealing groove. The result shows that the magnetic fluid which distributes at the right-angle edges of the two permanent magnets nearby the separator presents unsteady swirl flow due to the volume force, while the rest magnetic fluid is in the quiescent state
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21

Cai, Yu Qiang, and Na Xing. "The Analysis on the Starting Friction Torque Increase of Magnetic Fluid Revolving Sealing." Applied Mechanics and Materials 275-277 (January 2013): 429–32. http://dx.doi.org/10.4028/www.scientific.net/amm.275-277.429.

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Abstract. Magnetic fluid revolving sealing is widely used in modern industry. In the process of application, it is founded that the starting friction torque is very large, particularly at lower temperature. This problem has become a key factor restricting the application of magnetic fluid rotation sealing. In this paper, the mechanism of starting torque increase is analyzed, based on the change of microstructure and its viscosity. After analysis , such conclusion is obtained , which can be described: to a certain sealing structure, the type of magnetic fluid, size distribution of magnetic part
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22

Fu, Yonghong, Renjing Zhang, Yuqiang Jiang, Xiangyu Fan, and Yifan Gu. "Experimental Studies on Pore Structure and the Gas Content Evolution Mechanisms of Shale Gas Reservoirs at Different Burial Depths in the Longmaxi Formation, Southern Sichuan Basin." Applied Sciences 13, no. 24 (2023): 13194. http://dx.doi.org/10.3390/app132413194.

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Micro- and nano-scale pores develop in shale reservoirs, and the associated pore structure controls the occurrence state, gas content, seepage capacity, and micro-migration and accumulation mechanisms of shale gas. For this study, we mainly conducted tests, using field emission-scanning electron microscopy, of the isothermal methane adsorption of powder-sized samples under high temperatures (60–130 °C) and pressures (0–45 MPa), along with methane-saturated nuclear magnetic resonance tests of plug-sized samples under different temperatures (60–100 °C) and pressures (0–35 MPa). These samples wer
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23

Li, Zhenggui, Ziyue Wang, Changrong Shen, et al. "Simulation and Experimental Design of Magnetic Fluid Seal Safety Valve for Pressure Vessel." Processes 12, no. 9 (2024): 2040. http://dx.doi.org/10.3390/pr12092040.

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This article focuses on the safety valve of pressure vessels, and a new ferrofluid sealing device for pressure vessel safety valves is developed based on a special magnetic circuit. A combined method of numerical calculation and experimental analysis is used to study the relationship between seal clearance, number of seals, pole slot width, pole tooth height, pole tooth width, and the sealing pressure of the ferrofluid sealing device. The research results show that seal clearance and pole tooth width have a significant impact on the sealing performance, and as the dimensions increase, the seal
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24

Matuszewski, Leszek. "New Designs of Centrifugal Magnetic Fluid Seals for Rotating Shafts in Marine Technology." Polish Maritime Research 26, no. 2 (2019): 33–46. http://dx.doi.org/10.2478/pomr-2019-0023.

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Abstract The centrifugal magnetic fluid seals have important advantage over the conventional centrifugal seals. They maintain very good sealing capacity at static, medium and high speeds of shaft rotation, with the increased seal lifetime, and minimum torque and static friction. These seals are particularly useful in cases when the angular shaft velocity varies and sometimes decreases to nearly or exactly zero, such as in flywheel applications, ship propeller main shafts, etc. Unique properties of the magnetic fluid give rare opportunities for application in marine design, where perfect sealin
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Li, Wangxu, Zhenggui Li, Ziyue Wang, Feng Wu, Lianchen Xu, and Shengyang Peng. "Turbulence Intensity Characteristics of a Magnetoliquid Seal Interface in a Liquid Environment." Coatings 11, no. 11 (2021): 1333. http://dx.doi.org/10.3390/coatings11111333.

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In a liquid environment, the turbulence intensity of the interfacial layer between the magnetic and sealing medium fluids in magnetic liquid seals directly affects the layer stability. Reducing the maximum turbulence intensity of the fluid interface layer effectively improves the stability of the magnetic fluid rotary seal. In this study, we simulated magnetic fluid sealing devices with different structures in liquid environments using the FLUENT software. The simulation results were verified through experimental analyses of the turbulence intensity at the sealing interface. The maximum turbul
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Cheng, Yanhong, Zhe Su, Jiayi Zhou, et al. "Calculation of the Maximum Temperature of Diester-Based Magnetic Fluid Layers in High-Speed Seals." Nanomaterials 13, no. 6 (2023): 1019. http://dx.doi.org/10.3390/nano13061019.

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Magnetic fluids, as smart nanomaterials, have been successfully used in sealing applications and other fields. However, the temperature of magnetic fluids in the sealing gap is a key factor affecting sealing performances, limiting their application in high-speed sealing fields. Since obtaining a direct measurement of the magnetic fluid’s temperature is difficult, due to the small clearance, accurately calculating the maximum temperature of the magnetic fluid layer in high-speed seals is crucial. Herein, a mathematical model for calculating the maximum temperature of the magnetic fluid layer wa
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27

Cuong, Vo Van, Quoc Hung Nguyen, Le Hai Zy Zy, et al. "Design, modeling, and experimental evaluation of a self-sealing component for rotary shafts in magneto-rheological fluid devices." Vietnam Journal of Mechanics 45, no. 3 (2023): 247–58. http://dx.doi.org/10.15625/0866-7136/19024.

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This study focuses on the development and evaluation of a self-sealing component for rotary shafts in Magneto-rheological (MR) fluid-based devices, such as MR brakes and MR clutches. The proposed sealing component, which replaces traditional lip-seals, consists of a permanent magnet and a magnetic core positioned on the rotary shaft. Through a combination of simulation and experimentation, the design and performance of the self-sealing component are investigated. Initially, the research provides an overview of MR fluid and its applications, as well as previous studies on sealing components uti
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28

Su, Wen Hai. "Study on Complex Dynamic Pressure Metal Seal in Rotary Vane Steering Gear Based on Fluid Structure Interaction." Advanced Materials Research 113-116 (June 2010): 1606–9. http://dx.doi.org/10.4028/www.scientific.net/amr.113-116.1606.

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Cast-iron sealing devices using springs are commonly used in rotary vane steering gear. These devices have good wear resistance, long service life and maintenance-free. Finite Element Analysis of cast-iron sealing device includes contact analysis of metal materials effecting of fluid action. ADINA was used to carry on sealing mechanism of cast-iron sealing device based on taking Fluid-Structure Interaction(FSI) and contact analysis into consideration and the complex dynamic pressure metal seal with ability of automatic compensation is proposed and verified that it can enhance the sealing abili
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29

Zhang, Hui-tao, and De-cai Li. "Analysis of Split Magnetic Fluid Plane Sealing Performance." Journal of Magnetics 22, no. 1 (2017): 133–40. http://dx.doi.org/10.4283/jmag.2017.22.1.133.

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30

TOMIOKA, Jun, and Takashi OHBA. "Characteristics of Blood Sealing by Magnetic Fluid Seals." Proceedings of the JSME annual meeting 2003.5 (2003): 93–94. http://dx.doi.org/10.1299/jsmemecjo.2003.5.0_93.

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31

Junji Tani and Kikuo Ohtomo. "Sealing Effect of Magnetic Fluid at a Crack." Journal of Intelligent Material Systems and Structures 4, no. 1 (1993): 135–37. http://dx.doi.org/10.1177/1045389x9300400117.

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Li, Zixian, Decai Li, Yanwen Li, and Shuntao Han. "Influence of High Viscosity and Magnetoviscous Effect on the Washout Resistance of Magnetic Fluid." Magnetochemistry 9, no. 5 (2023): 134. http://dx.doi.org/10.3390/magnetochemistry9050134.

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Magnetic fluid seals have long been thought to be a successful sealing form while sealing liquids are always a challenge. The instability of the liquid–liquid interface under the washout has become the key technical problem that hinders the realization of sealing liquid. This work mainly presents an experimental study about the influence of high viscosity and magnetoviscous effects on washout resistance. Three engine oil-based magnetic fluids of different viscosities were prepared with two kinds of surfactants. The magnetoviscous effects of the prepared magnetic fluids under different working
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33

SZCZĘCH, Marcin, Wojciech HORAK, and Józef SALWIŃSKI. "THE INFLUENCE OF SELECTED PARAMETERS ON MAGNETIC FLUID SEAL TIGHTNESS AND MOTION RESISTANCE." Tribologia, no. 4 (August 31, 2017): 71–76. http://dx.doi.org/10.5604/01.3001.0010.5997.

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Magnetic fluid seals belong to the class of non-contact seals. They are used as protective seals for vacuum systems, high speed shafts, precision mechanics, and electromechanical devices. The proper functioning of the magnetic fluid seal is related to creating and maintaining the continuity of the fluid ring on the sealing stage. This is achieved by appropriately shaped magnetic field distribution in the region of the sealing stage. Consequently, one of the main issues with the construction of such seals is to determine the distribution of the magnetic field in this region. This paper presents
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Wang, Hujun. "Interface stability of magnetic fluid seal for sealing liquid." Journal of Physics: Conference Series 1885, no. 3 (2021): 032008. http://dx.doi.org/10.1088/1742-6596/1885/3/032008.

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TOMIOKA, Jun, Akira FUKAISHI, and Takashi OHBA. "A Study of Magnetic Fluid Seals for Blood Sealing." Proceedings of the JSME annual meeting 2002.1 (2002): 51–52. http://dx.doi.org/10.1299/jsmemecjo.2002.1.0_51.

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Kim, Young Sam, and Young Han Kim. "Application of ferro-cobalt magnetic fluid for oil sealing." Journal of Magnetism and Magnetic Materials 267, no. 1 (2003): 105–10. http://dx.doi.org/10.1016/s0304-8853(03)00342-1.

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Li, Xinrui, Xiaoqiang Fan, Zhenggui Li, and Minhao Zhu. "Failure mechanism of magnetic fluid seal for sealing liquids." Tribology International 187 (September 2023): 108700. http://dx.doi.org/10.1016/j.triboint.2023.108700.

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38

Hegger, Christian, and Jürgen Maas. "Smart sealing for magnetorheological fluid actuators." Journal of Intelligent Material Systems and Structures 30, no. 5 (2018): 689–700. http://dx.doi.org/10.1177/1045389x17754261.

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In automotive and industrial environments, magnetorheological fluid–based applications such as clutches and brakes are gaining continuously more attention. However, one of the serious challenges for their application are drag losses at high shear rates. While viscous losses of the magnetorheological fluid can be eliminated by a magnetorheological fluid movement control based on partially filled shear gaps, commonly utilized sealings also cause drag losses based on dry friction. To overcome these challenges, in this contribution, a novel design of sealings for magnetorheological fluid–based act
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39

Szydło, Zbigniew, and Leszek Matuszewski. "Experimental research on effectiveness of the magnetic fluid seals for rotary shafts working in water." Polish Maritime Research 14, no. 4 (2007): 53–58. http://dx.doi.org/10.2478/v10012-007-0040-y.

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Experimental research on effectiveness of the magnetic fluid seals for rotary shafts working in water This paper presents course of research on ferro-fluidal seals used in water. The tests were carried out for a hydrophobic magnetic fluid and specially selected profiles of sealing lips at various linear velocities in sealing unit. Though the tests were preliminary their results showed that the research on application of magnetic fluids to seals working in liquid environment should be continued. From the point of view of development of ring drives the most important advantage of ferro-fluidal s
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40

Szydło, Zbigniew, and Marcin Szczech. "Investigation of Dynamic Magnetic Fluid Seal Wear Process in Utility Water Environment." Key Engineering Materials 490 (September 2011): 143–55. http://dx.doi.org/10.4028/www.scientific.net/kem.490.143.

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Serious problems arise when the magnetic fluid seal technology is needed to use in assemblies working in water or other liquid environment. Some efforts have been up to time made to design hybrid, two stage sealing structures with shields or mechanical seals used as protection measures to the magnetic fluid seal. Anyway, earlier or later there is always problem with direct contact between magnetic fluid and the environmental liquid. In the paper are presented results of experiments carried out with one stage rotating magnetic fluid seal operating in an direct contact with utility water. The sp
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41

Zhang, Shenghai. "Integrated Analysis System for Dynamic Sealing Performance of Civil Aircraft Boarding Door." Journal of Physics: Conference Series 2396, no. 1 (2022): 012027. http://dx.doi.org/10.1088/1742-6596/2396/1/012027.

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Abstract This paper introduces an integrated analysis system for the dynamic sealing performance of civil aircraft boarding doors. The analysis system mainly carries out virtual verification for the sealing performance of civil aircraft doors in various service environments, including the simulation module of fluid pressure temperature on the surface of aircraft doors. There are three subsystems: hatch fluid-structure coupling interpolation module and hatch dynamic sealing performance finite element simulation module. The system is used to simulate the sealing performance of civil aircraft boa
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42

Radionov, Aleksander, Aleksander Podoltsev, and Grzegorz Peczkis. "The Specific Features of High-Velocity Magnetic Fluid Sealing Complexes." Open Engineering 8, no. 1 (2018): 539–44. http://dx.doi.org/10.1515/eng-2018-0066.

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Abstract Studies on the impact of magnetic and centrifugal forces in hermetic magnetic-liquid seals were presented. The results of numerical calculations on the decrease of the impact of the centrifugal force through the use of magnetic flux concentrators on a rotating shaftwere shown. It has been demonstrated that there is a greater possibility for the use of hermetic magnetic-liquid seals in axially symmetrical clearances in gas-steam separation for coke gases.
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Matuszewski, Leszek. "Failure of Magnetic Fluid Seals Operating in Water: Preliminary Conclusions." Polish Maritime Research 24, no. 2 (2017): 113–20. http://dx.doi.org/10.1515/pomr-2017-0057.

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AbstractThe article analyses properties of magnetic fluid seals installed in rotary sealing nodes which operate in the utility water environment. Seals of this type have been examined as a possible solution to the problem with ship manoeuvring propulsion sealing. The present analysis bases on laboratory durability tests of magnetic fluid seals exposed to longterm utility water loads, at different water pressures and shaft revolutions. The basic seal durability criterion was the number of revolutions made by the sealing node shaft until the appearance of water tightness loss (leakage). It was f
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44

Li, Decai, Haiping Xu, Xinzhi He, and Huiqing Lan. "Study on the magnetic fluid sealing for dry Roots pump." Journal of Magnetism and Magnetic Materials 289 (March 2005): 419–22. http://dx.doi.org/10.1016/j.jmmm.2004.11.118.

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45

Hao, Fuxiang, Xiaolong Yang, and Peng Sun. "Design of Magnetic Circuit and Simulation of Magnetic Fluid Sealing with Three Magnetic Sources." IOP Conference Series: Materials Science and Engineering 740 (March 17, 2020): 012003. http://dx.doi.org/10.1088/1757-899x/740/1/012003.

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46

Luan, Zhi Bo, Hou Hua Pang, and Xiao Dong Tan. "The Numerical Analysis of Leakage in Ultrahigh Pressure Seal Structure." Applied Mechanics and Materials 248 (December 2012): 433–37. http://dx.doi.org/10.4028/www.scientific.net/amm.248.433.

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This article states seal clearance and fluid leakage.By means of pressure distribution calculation and theoretical analysis, theoretically it establishs the mathematical model of the leakage with liquid material, the sealing structure and the fuel tank between the internal and external pressure.The whole processes on Matlab platform meet the complex engineering requirements,so the calculation process is simple and convenient. By calculating the results should be very intuitive, it closes to the sealing gap and leakage distribution curve. Thus, it is sure sealing clearance is the first element
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47

Matuszewski, Leszek, and Zbigniew Szydło. "The application of magnetic fluids in sealing nodes designed for operation in difficult conditions and in machines used in sea environment." Polish Maritime Research 15, no. 3 (2008): 49–58. http://dx.doi.org/10.2478/v10012-007-0083-0.

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The application of magnetic fluids in sealing nodes designed for operation in difficult conditions and in machines used in sea environment Presented in article MF seals are being researched for sea technology purposes due to their excellent tightness and low resistance of motion. These features are most valuable for ring propellers and ship's main propeller shaft. There are more reasons why technologists payf significant attention for various MF seals applications in their difficult operating conditions. For instance, an advanced pumping systems are designed with contactless (screw or centrifu
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48

Ye, Feng, Feng Chen, Wenchang Wang, et al. "Flow in Microchannels between Sealing Surfaces of Casing Connections: LBM Simulation." Geofluids 2023 (April 15, 2023): 1–13. http://dx.doi.org/10.1155/2023/5293830.

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Great difficulties have been encountered in the study of the seal failure of casing connection. The in situ microscopic seal surfaces under complex loads are hard to be obtained due to the engagement characteristics of thread. In this study, a method to construct the microscopic seal surfaces of a specified 7 ″ casing PTC under complex loads was proposed. Then, the lattice Boltzmann method (LBM) was applied to simulate the fluid flow inside the microchannel between the seal surfaces. The effect of pressure gradient and wettability on the flow behavior of a multicomponent fluid system at the mi
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Li, Songjing. "SIMULATION AND EXPERIMENT STUDY OF NEW TYPE MAGNETIC FLUID SEALING RING." Chinese Journal of Mechanical Engineering 39, no. 08 (2003): 61. http://dx.doi.org/10.3901/jme.2003.08.061.

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Xuehui, Li, Zou Jibin, An Hong, Chen Erbin, and Liu Jun. "Research on the iron-nitride magnetic fluid safety valve for sealing." Journal of Magnetism and Magnetic Materials 252 (November 2002): 330–32. http://dx.doi.org/10.1016/s0304-8853(02)00659-5.

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