Wear And Sliding Friction Properties Of Nickel Alloys Suited For Cages Of High Temperature Rolling Contact Bearings

Author : Robert L. Johnson
Publisher : Unknown
Page : 754 pages
File Size : 48,8 Mb
Release : 1952
Category : Bearings (Machinery)
ISBN : STANFORD:36105024831401

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Wear and Sliding Friction Properties of Nickel Alloys Suited for Cages of High-temperature Rolling-contact Bearings by Robert L. Johnson Pdf

Wear and sliding friction properties of a number of nickel alloys operating against hardened SAE 52100 steel were studied. The alloys were cast beryllium nickel, heat-treated beryllium nickel, cast Inconel, Nimonic 80, Inconel X, Refractalloy 26, and Discaloy. Some of the allows studied may be useful as material for cages of rolling-contact bearings that operate at high speeds with temperatures above 600 degrees F in projected aircraft turbine engines or for bearings that operate in corrosive mediums. Desirable operating properties and the absence of extreme mass welding of all the materials could be associated with the development of the sliding surfaces of a naturally formed film of nickel oxide. On the basis of wear and friction properties, cast Inconel performed very well in these experiments and compares favorably with nodular iron. Nimonic 80 also showed promise as a possible cage material.

Author : United States. National Advisory Committee for Aeronautics
Publisher : Unknown
Page : 886 pages
File Size : 46,9 Mb
Release : 1955
Category : Aeronautics
ISBN : RUTGERS:39030037542752

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Technical Note - National Advisory Committee for Aeronautics by United States. National Advisory Committee for Aeronautics Pdf

Author : United States. National Advisory Committee for Aeronautics
Publisher : Unknown
Page : 568 pages
File Size : 42,7 Mb
Release : 1951
Category : Aeronautics
ISBN : IND:30000088900174

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Research Abstracts by United States. National Advisory Committee for Aeronautics Pdf

Author : Anonim
Publisher : Unknown
Page : 500 pages
File Size : 45,7 Mb
Release : 1952
Category : Science
ISBN : OSU:32435022153761

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Bibliography of Technical Reports by Anonim Pdf

Author : Edmond E. Bisson
Publisher : Unknown
Page : 72 pages
File Size : 47,8 Mb
Release : 1955
Category : Aeronautics
ISBN : UOM:39015086496372

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Friction, Wear, and Surface Damage of Metals as Affected by Solid Surface Films by Edmond E. Bisson Pdf

As predicted by friction theory, experiments showed that friction and surface damage of metals can be reduced by solid surface films. The ability of materials to form surface films that prevent welding was a very important factor in wear studies of dry and boundary lubricated surfaces. Films of graphitic carbon on cast irons, NiO on nickel alloys, and FeO and Fe3O4 on ferrous materials were found to be beneficial. Abrasive films such as Fe2O3 on MoO3 were definitely detrimental. It appears that the importance of oxide films to friction and wear processes has not been fully appreciated.

Author : William J. Anderson
Publisher : Unknown
Page : 30 pages
File Size : 42,9 Mb
Release : 1953
Category : Bronze
ISBN : UOM:39015086496117

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Effect of Bronze and Nodular Iron Cage Materials on Cage Slip and Other Performance Characteristics of 75-millimeter-bore Cylindrical-roller Bearings at DN Values of 2,000,000 by William J. Anderson Pdf

An experimental investigation to determine the relative merits of bronze and nodular iron as cage materials for cylindrical-roller bearings was conducted using four identical 75-millimeter-bore outer-race-riding cage-type cylindrical-roller bearings (tow with bronze cages and two with nodular iron cages). The test bearings were operated over a range of DN values (product of bearing bore in mm and shaft speed in rpm) from 300,00 to 2,100,000, oil flows from 2 to 8 pounds per minute, and loads from 7 to 1613 pounds.

Author : William J. Anderson,E. Fred Macks,Zolton N. Nemeth
Publisher : Unknown
Page : 36 pages
File Size : 40,5 Mb
Release : 1953
Category : Loads (Mechanics)
ISBN : UOM:39015086496109

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Comparison of Operating Characteristics of Four Experimental and Two Conventional 75-millimeter-bore Cylindrical-roller Bearings at High Speeds by William J. Anderson,E. Fred Macks,Zolton N. Nemeth Pdf

An investigation of four experimental and two conventional 75-millimeter-bore (size 215) cylindrical-roller bearings was conducted over a range of DN values (product of bearing bore in mm and shaft speed in rpm) from 300,000 to 2,300,000, radial loads from 7 to 1613 pounds, and oil flows from 2 to 8 pounds per minute with a single-jet circulatory oil feed. The four experimental bearings were equipped with outer-race-riding cages and inner-race-guided rollers. One conventional bearing was equipped with an outer-race-riding cage and outer-race-guided rollers, while the second conventional bearings was equipped with an inner-race-riding cage and inner-race-guided rollers. Each of the six test bearings was equipped with a different design cage made of nodular iron.

Author : United States. National Advisory Committee for Aeronautics
Publisher : Unknown
Page : 274 pages
File Size : 49,9 Mb
Release : 1953
Category : Aeronautics
ISBN : STANFORD:36105024165636

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Index of NACA Technical Publications by United States. National Advisory Committee for Aeronautics Pdf

Author : Anonim
Publisher : Unknown
Page : 622 pages
File Size : 44,5 Mb
Release : 1953
Category : Mechanics, Applied
ISBN : STANFORD:36105013125781

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Applied Mechanics Reviews by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 750 pages
File Size : 52,5 Mb
Release : 1949
Category : Aeronautics
ISBN : UVA:X004173285

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A Selected Listing of NASA Scientific and Technical Reports for ... by Anonim Pdf

Author : United States. National Advisory Committee for Aeronautics
Publisher : Unknown
Page : 30 pages
File Size : 45,9 Mb
Release : 1956
Category : Aeronautics
ISBN : STANFORD:36105024791944

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Report by United States. National Advisory Committee for Aeronautics Pdf

Author : E. E. Bisson,William J. Anderson
Publisher : Unknown
Page : 524 pages
File Size : 41,6 Mb
Release : 1964
Category : Bearings (Machinery)
ISBN : UIUC:30112000417961

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Advanced Bearing Technology by E. E. Bisson,William J. Anderson Pdf

Author : Albert E. Von Doenhoff,Albert L. Braslow,Milton A. Schwartzberg
Publisher : Unknown
Page : 668 pages
File Size : 51,9 Mb
Release : 1953
Category : Dichlorodifluoromethane
ISBN : STANFORD:36105024831708

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Studies of the Use of Freon-12 as a Wind-tunnel Testing Medium by Albert E. Von Doenhoff,Albert L. Braslow,Milton A. Schwartzberg Pdf

A number of studies relating to the use of Freon-12 as a substitute medium for air in aerodynamic testing have been made. The use of Freon-12 instead of air makes possible large savings in wind-tunnel drive power. Because of the fact that the ratio of specific heats is approximately 1.13 for Freon-12 as compared with 1.4 for air, some differences exist between data obtained in Freon-12 and air. Methods for predicting aerodynamic characteristics of bodies in air from data obtained in Freon-12, however, have been developed from the concept of similarity of the streamline pattern. These methods, derived from consideration of two-dimensional flows, provide substantial agreement in all cases for which comparative data are available. These data consist of measurements throughout a range of Mach number from approximately 0.4 to 1.2 of pressure distributions and hinge moments on swept and unswept wings having aspect ratios ranging from 4.0 to 9.0, including cases where a substantial part of the wing was stalled.

Author : Anonim
Publisher : Unknown
Page : 520 pages
File Size : 48,8 Mb
Release : 1952
Category : Aeronautics
ISBN : UIUC:30112008554294

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Technical Note by Anonim Pdf

Author : United States. National Advisory Committee for Aeronautics
Publisher : Unknown
Page : 462 pages
File Size : 44,9 Mb
Release : 1954
Category : Aerodynamics
ISBN : UCBK:C032405596

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NACA-University Conference on Aerodynamics, Construction, and Propulsion by United States. National Advisory Committee for Aeronautics Pdf