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Some effects of gamma radiation on commercial lubricants
VOL.
Friction of Steel Slabs on a Roller Table Under Varying Physical Conditions. S. K. Dean and M. X. Kilburn. Institulion of Mechanical Engineers, Proceedings, v. 169, no. 54, 1955, p. 1081-1089.
Flat-plate. Turbulent flow. Recuperation, friction, and Reynolds analogy coefficients. Boundary layer control and transition. Application to intercontinental airplanes. Influence of the Coefficient of Friction on the Magnitude of the Spread During Rolling Wedge-Like Specimens. (in Polish) Waclaw Leskiewicz and Stefan Kwiatkowski. .?rchiwum Hutnictwa, v. 2, no. 2, 1957, p. 167.
Friction
Load
I .3. Machine Parts and l%‘achznery Effect of Pipe Roughness on Fluid Meter Discharge Coefficient. Stanley Abramovitz. Power, Y. 101, Aug. 1957, I’. 75-77. Tests showed a significant increase in discharge coefficient caused by pipe roughness. 2.
I,UBRICATION
Functional bricants.
Testing
of Cold
Reduction
J F. Griffin. Journal of Metals, v. 9, Aug. 1’.
Lu1957,
lO~+2-1043.
The use of the torque test to evaluate the frictional properties of rolling oils under extreme pressures at speeds approaching zero. Effect of Physico-Chemical Lubricating Oils on Energy Transmission. K. I. Klimov
Properties
of
Loss in a Gear
(in Russian) and A. V. Vilenkin.
Khimiia i Teknologiia Topliva, i Masel. 1957, no. 7. July, 1’. 39-42. Losses do not depend on the chemical composition or the method of manufacturing the oil, but on the viscosity at a given temperature. Energy losses are determined from viscosity resistance. To keep losses low it is recommended that oils with low viscosity, and increasing only slowly with decreasing temperature be used. Theory of a Cylinder Rolling on a Plate Covered With Visco-Plastic Lubricant. (in Russian) I,. I. Kotova. Zhurnal Tekhlzicheskoi Fiziki,
v. 27, no. 7. July ‘957, p. ‘540-1557. Integration of the Shvedov Bingham equation applied to the case of a cylinder rolling on a plate covered with visco-plastic lubricant. A differential equation for the hydrodynamic pressure is obtained. 2.2. Materials
Radiation-Resistant Greases. J. G. Carroll, R. 0. Bolt, and B. W. Hotten.
Lubrication Engineering, v. 13, Mar. 1957, p. 136-140. Radiation altered consistency. Most greases softened initially but eventually became solid.
Wide-Range
Nomo-
Distribution
on Helical
v. 33,
Gear Teeth I.
M. D. Trbojevic. Elzgineer, v. 204, .4ug. 9, 1957, p. 187-190. Load distribution along lines of contact for various positions of the contact lines and for various helix angles. A method for determining partial loads acting on teeth simultaneousl? 1n contact. Conditions for most convenient load distribution. Position of least favorabl\loaded contact line. (To be concluded.)
(no abstracts)
2. I. General and Fundamentals
in Pipes-A
graph. Reagan Houston. Product Engixeeriflg, Aug. 19j7, p. 191-193.
192.
I .z. Materials
351
SYSTEMATIC ABSTRACTS
1 (1957/58)
AND
LUBRICANTS
Bearing life was reduced by 40 to 909;, and oxidation resistance was also severely impaired. Greases made from alkylaromatic fluids and selected gelling agents gave excellent results in standard tests and showed superior radiation resistance after 32 x 1o*r. Some Effects of Gamma mercial Lubricants.
Radiation
on Com-
J. G. Carroll and S. R. Calish, Jr. Lubricatiotz Engi?teering, v. 13, July 1957, p. 388-392. Several commercial oils and greases can be used in the presence of y radiation for dosages of at least 10%. In general, the end effect of radiation on lubricants is similar to severe oxidation. Wear properties and load carrying capacity of certain oils are enhanced. Grease Lubrication of Rolling Bearings. J. H. Harris. Met&working Production, v. IOI, July 5, 1957, p. 1157-1161. Iriew development based on Li 1z-hydroxystearate. Advantages are outstanding mechanical stability, wide temperature range, long shelf-life, and resistance to drying-out and hardening in service. The Effects of Nuclear Radiation on Lubricants. J. A. King and W. L. R. Rice. Lubrication Engineering, v. 13, May 1957, p. 279-283. Effects of y radiation on petroleum and synthetic-base hydraulic fluids, lubricants, and engine oils. Many of the materials tested appear satisfactory for use after exposure to 1 x IO* roentgens of y radiation. Bearing Characteristics of Nickel-Base Alloys. R. K. Kozlik. Machine Design, v. 29, Aug. 22,
‘957. p. I39 + 2 pages. A presentation of data on the characteristics of various alloys.
Friction of Steel Slabs on a Roller Table Under Varying Physical Conditions. S. K. Dean and M. X. Kilburn. Institulion of Mechanical Engineers, Proceedings, v. 169, no. 54, 1955, p. 1081-1089.
Flat-plate. Turbulent flow. Recuperation, friction, and Reynolds analogy coefficients. Boundary layer control and transition. Application to intercontinental airplanes. Influence of the Coefficient of Friction on the Magnitude of the Spread During Rolling Wedge-Like Specimens. (in Polish) Waclaw Leskiewicz and Stefan Kwiatkowski. .?rchiwum Hutnictwa, v. 2, no. 2, 1957, p. 167.
Friction
Load
I .3. Machine Parts and l%‘achznery Effect of Pipe Roughness on Fluid Meter Discharge Coefficient. Stanley Abramovitz. Power, Y. 101, Aug. 1957, I’. 75-77. Tests showed a significant increase in discharge coefficient caused by pipe roughness. 2.
I,UBRICATION
Functional bricants.
Testing
of Cold
Reduction
J F. Griffin. Journal of Metals, v. 9, Aug. 1’.
Lu1957,
lO~+2-1043.
The use of the torque test to evaluate the frictional properties of rolling oils under extreme pressures at speeds approaching zero. Effect of Physico-Chemical Lubricating Oils on Energy Transmission. K. I. Klimov
Properties
of
Loss in a Gear
(in Russian) and A. V. Vilenkin.
Khimiia i Teknologiia Topliva, i Masel. 1957, no. 7. July, 1’. 39-42. Losses do not depend on the chemical composition or the method of manufacturing the oil, but on the viscosity at a given temperature. Energy losses are determined from viscosity resistance. To keep losses low it is recommended that oils with low viscosity, and increasing only slowly with decreasing temperature be used. Theory of a Cylinder Rolling on a Plate Covered With Visco-Plastic Lubricant. (in Russian) I,. I. Kotova. Zhurnal Tekhlzicheskoi Fiziki,
v. 27, no. 7. July ‘957, p. ‘540-1557. Integration of the Shvedov Bingham equation applied to the case of a cylinder rolling on a plate covered with visco-plastic lubricant. A differential equation for the hydrodynamic pressure is obtained. 2.2. Materials
Radiation-Resistant Greases. J. G. Carroll, R. 0. Bolt, and B. W. Hotten.
Lubrication Engineering, v. 13, Mar. 1957, p. 136-140. Radiation altered consistency. Most greases softened initially but eventually became solid.
Wide-Range
Nomo-
Distribution
on Helical
v. 33,
Gear Teeth I.
M. D. Trbojevic. Elzgineer, v. 204, .4ug. 9, 1957, p. 187-190. Load distribution along lines of contact for various positions of the contact lines and for various helix angles. A method for determining partial loads acting on teeth simultaneousl? 1n contact. Conditions for most convenient load distribution. Position of least favorabl\loaded contact line. (To be concluded.)
(no abstracts)
2. I. General and Fundamentals
in Pipes-A
graph. Reagan Houston. Product Engixeeriflg, Aug. 19j7, p. 191-193.
192.
I .z. Materials
351
SYSTEMATIC ABSTRACTS
1 (1957/58)
AND
LUBRICANTS
Bearing life was reduced by 40 to 909;, and oxidation resistance was also severely impaired. Greases made from alkylaromatic fluids and selected gelling agents gave excellent results in standard tests and showed superior radiation resistance after 32 x 1o*r. Some Effects of Gamma mercial Lubricants.
Radiation
on Com-
J. G. Carroll and S. R. Calish, Jr. Lubricatiotz Engi?teering, v. 13, July 1957, p. 388-392. Several commercial oils and greases can be used in the presence of y radiation for dosages of at least 10%. In general, the end effect of radiation on lubricants is similar to severe oxidation. Wear properties and load carrying capacity of certain oils are enhanced. Grease Lubrication of Rolling Bearings. J. H. Harris. Met&working Production, v. IOI, July 5, 1957, p. 1157-1161. Iriew development based on Li 1z-hydroxystearate. Advantages are outstanding mechanical stability, wide temperature range, long shelf-life, and resistance to drying-out and hardening in service. The Effects of Nuclear Radiation on Lubricants. J. A. King and W. L. R. Rice. Lubrication Engineering, v. 13, May 1957, p. 279-283. Effects of y radiation on petroleum and synthetic-base hydraulic fluids, lubricants, and engine oils. Many of the materials tested appear satisfactory for use after exposure to 1 x IO* roentgens of y radiation. Bearing Characteristics of Nickel-Base Alloys. R. K. Kozlik. Machine Design, v. 29, Aug. 22,
‘957. p. I39 + 2 pages. A presentation of data on the characteristics of various alloys.