Results 11 to 20 of about 379 (128)

Neural Networks as a Tool to Characterise Oil State After Porous Bearings Prolonged Tests

Medžiagotyra, 2015
The paper presents the results of research of durability tests of porous sleeves under differed conditions (600, 1000 and 1400 rpm, duration of the tests: 100, 200 and 1000 hours, temperature 60, 80 and 130˚C) of one oil.
Artur Król, Krzysztof Gocman, Bolesław Giemza   +2 more
doaj   +2 more sources

Laser powder bed fusion of porous 304SS samples for use in developing oil impregnated ball bearings

Discover Applied Sciences
The ball bearing market is mature where there is a massive range of products available with new ones being developed all the time due to technological advancements.
Tafadzwa Mashayamombe, Stephen Matope
doaj   +2 more sources

Physical Simulation and Mathematical Model of the Porous Flow Characteristics of Gas-Bearing Tight Oil Reservoirs [PDF]

Energies, 2021
The separation of solution gas has great influence on the development of gas-bearing tight oil reservoirs. In this study, physical simulation and high-pressure mercury intrusion were used to establish a method for determining the porous flow resistance gradient of gas-bearing tight oil reservoirs.
Yuan Rao, Zhengming Yang, Yapu Zhang, Zhenkai Wu, Yutian Luo, Haibo Li, Ying He   +6 more
openaire   +2 more sources

Externally Pressurized Oil Bearings with Porous Ceramics Materials.

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 1995
In the field of hydrostatic bearings, the porous resistor has been adopted only in air bearings. Here, we tried to apply the porous ceramics, the surface of which is not crushed by machining, to hydrostatic journal bearings for incompressible fluid. The equations derived to calculate the bearing performance are effective for bearing types of both with ...
Nakashima, Katuhiro, Takafuji, Kazuki
openaire   +2 more sources

Externally pressurized thrust oil bearing with porous material. (On the bearing with land surface).

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 1988
As a working medium of the externally pressurized porous bearing, air is generally used. The reason why liquid is not adopted is due to the high flow resistance of usual porous materials for the bearing. Lately, a new porous metal made by pressure casting has been developed.
NAKASHIMA, Katuhiro, TAKAFUJI, Kazuk, NAGAT, Sumio   +2 more
openaire   +2 more sources

Influence of reservoir lithology on porous flow resistance of gas-bearing tight oil reservoirs and production forecast [PDF]

Journal of Petroleum Exploration and Production Technology, 2021
AbstractThe release of dissolved gas during the development of gas-bearing tight oil reservoirs has a great influence on the effect of development. In this article, the high-pressure mercury intrusion experiment was carried out in cores from different regions and lithologies of the Ordos Basin and the Sichuan Basin.
Yuan Rao, Zhengming Yang, Lijing Chang, Yapu Zhang, Zhenkai Wu, Haibo Li   +5 more
openaire   +1 more source

Increasing oil absorption in bearings as a result of ultrasonic exposure to ultrafine particles [PDF]

E3S Web of Conferences
The article proposes an approach that ensures an increase in oil absorption by bearings as a result of ultrasonic exposure to ultrafine particles. The approach is based on the method of thermodynamics and kinetics of the formation of inorganic ultrafine ...
Siddikova Sadokat, Sirojidinov Shamilidin, Bakhriddinova Nasiba, Zaripova Mokhira, Juraeva Malokhat   +4 more
doaj   +1 more source

Experimental Study on Mechanism of Lubrication in Porous Journal Bearings : Oil Film Formed in Bearing Clearance

JSME international journal. Ser. C, Dynamics, control, robotics, design and manufacturing, 1994
An oil film formed in a bearing clearance is experimentally investigated to explicate the mechanism of lubrication in porous journal bearings. To visualize the oil film, a porous bronze bearing impregnated with a fluorescent-dyed oil is used for the test bearing, and the oil film is rendered visible by a pair of ultraviolet lamps.
Kaneko, Satoru, Inoue, Hiroyuki, Ushio, Kazuhiro   +2 more
openaire   +2 more sources

Research and Experimental Verification of the Static and Dynamic Pressure Characteristics of Aerospace Porous Media Gas Bearings

Aerospace
Porous media gas bearings utilize gas as a lubricating medium to achieve non-contact support technology. Compared with traditional liquid-lubricated bearings or rolling bearings, they are more efficient and environmentally friendly.
Xiangbo Zhang, Yi Tu, Nan Jiang, Wei Jin, Yongsheng Liang, Xiao Guo, Xuefei Liu, Zheng Xu, Longtao Shao   +8 more
doaj   +1 more source

Enabling Ultra-Stable Bearing Performance: Design of a Self-Lubricating PI Composite Retainer

Lubricants
To address challenges such as temperature rise, operational instability, and premature failure in rolling bearings caused by retainer friction, this study designed and developed a high-performance polyimide (PI)-based composite self-lubricating retainer ...
Zhining Jia, Caizhe Hao
doaj   +1 more source