Operating properties of water-lubricated composite bearings. Part II

Konchakovskii, V. A.; Miroshnikov, V. N.; Usanovich, L. Yu.; Fedorchenko, I. M.; Yampol'skii, I. D.

doi:10.1007/bf00790803

Cited by 4 publications

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“…These materials are layered: a layer of spherical bronze particles with pores being filled with fluoroplastic is sintered to the contact surface of a stainless-steel skeleton. If a friction unit is equipped with such bearings, they are lubricated with turbine vapor condensate [19,20]. Using bearings of such materials has permitted 25 to 30% reduction in the turbine weight and size since a complex system of oil supply to bearings was removed.…”

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Sintered antifriction materials

Косторнов

Фущич

2007

Powder Metall Met Ceram

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621.762Some classes of sintered antifriction materials that form the basis for the development of new materials are discussed. Metal-and nonmetal-based materials with high wear resistance, low friction coefficient, and maximum lifetime are described. They differ in composition, structure (microheterogeneous, macroheterogeneous, layered, fibrous), carrying capacity, and potential for operation under various loads, at sliding rates, and in various conditions (high and low temperatures, corrosive and aggressive media, i.e., in water, acids, alkalis, melted metals, burning-hot gases, with and without lubrication, under high vacuum), in different friction modes (light, medium, heavy, and extremely heavy). The above materials are intended for application in the aviation, motorcar, chemical, oil, metallurgical, transportation, nuclear, textile, and food industries, in cryogenic, rocket, missile, and turbine engineering.The general advance in mechanical engineering, transportation, communications, and other industries, associated with higher rates, pressure, power, operating temperatures of machines and mechanisms, and in space, nuclear, and cryogenic engineering are impossible without new materials. Of them, antifriction materials with high wear resistance, low friction coefficient, and maximum lifetime hold the lead. They are used to produce sliding bearings (cylindrical and ball bearings, thrust bearings, inserts, guides, end and side seals, etc.) for friction units of most contemporary machines and mechanisms.Along with conventional cast antifriction materials, sintered powder materials are taking a leading role since they are long-run, can be operated in various conditions, and their mechanical and tribotechnical properties and economic indicators often surpass those of cast alloys. The long-term experience of applying sintered antifriction materials in various engineering areas shows that they increase the wear resistance of friction units by a factor of 1.5 to 3.0 as compared with cast materials, lubricant supply being limited.Powder metallurgy methods make it possible to produce materials from components that have different melting temperatures or show liquid immiscibility, to obtain a homogenous material of desired porosity, to control the grain size by varying the reduction ratio of the initial components, and to develop composites by combining a high-strength component (which has high fracture toughness under friction and forms the load-bearing matrix of the material) and antifriction components (which form secondary structures on rubbing surfaces to prevent seizure). These methods result in sintered antifriction materials with ample solid and liquid lubricants of virtually any structure, composition, and

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confidence: 99%

Sintered antifriction materials

Косторнов

Фущич

2007

Powder Metall Met Ceram

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“…Water-lubricated thrust bearing uses water as lubricant and could save abundant oil; and water has the quantity of no-contaminate, abundantly available, energy conserving, security and hard to burn, which could reduce and lower abrasion, impulsion, noise, energy consumption with no contributions caused by movement of matching pairs. A water-lubricated thrust bearing has a visionary application prospect and has been used on hydraulic machines and ships [1][2][3][4].…”

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confidence: 99%

“…refers to the number of the thrust pad). Check if the load is convergence and if not, return to step(2) and revise the minimum water film thickness and iterate again; If it is, calculate friction loss, friction force and friction coefficient;(8) Output results. Structural parameters of thrust pad Structural parameters of the thrust pad are shown in Table1.Table1Structural parameters of thrust pad2) Physical properties of the material of thrust bearing The material of the thrust pad is a kind of non-metallic high polymer which has good self-lubrication function.…”

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Numerical Calculation Analysis of Structural Parameters of Water-Lubricated Thrust Bearing

2010

AMM

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The affect of the thrust pad inclination and ratio of length to breadth (L/B) on the lubricity of a water-lubricated thrust bearing is studied in numerical method. The research results indicate that when the elastic deformation is considered, the distribution of both water film thickness and pressure presents to be paraboloid. With the increase of thrust pad inclination, both maximum water-film pressure and the friction coefficient increase, and the minimum water-film thickness decreases first and then increases; when the L/B increases in the range of 1~2, both maximum water-film pressure and the friction coefficient increase, but the minimum water-film thickness decreases.

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Research on the Tribological Properties of SF Polymer Water-Lubricated Bearings

Fan²

2010

AMR

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In the paper, the SF polymer water lubricated bearings is taken as the research objects. Both material testing and bearing simulation testing are carried out to research the tribological properties of bearings including water swelling properties, friction coefficient, and wear-resistant properties mainly. The results show that the SF material, which is a new type of material used in water lubricated tail bearing, has the characteristics of low friction coefficient, high load capacity, good wear-resistance, excellent self-lubricating properties, and low water swelling, which has a broad application in the shipbuilding industry.

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Operating properties of water-lubricated composite bearings. Part II

Cited by 4 publications

References 0 publications

Sintered antifriction materials

Sintered antifriction materials

Numerical Calculation Analysis of Structural Parameters of Water-Lubricated Thrust Bearing

Research on the Tribological Properties of SF Polymer Water-Lubricated Bearings

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