Discussion: “Microstructural Alterations of Rolling—Bearing Steel Undergoing Cyclic Stressing” (Martin, J. A., Borgese, S. F., and Eberhardt, A. D., 1966, ASME J. Basic Eng., 88, pp. 555–565)

1966 ◽  
Vol 88 (3) ◽  
pp. 567-567
Author(s):  
J. L. O’Brien
Keyword(s):  
Rolling Bearing ◽  
Bearing Steel ◽  
Microstructural Alterations

Microstructural Alterations of Rolling—Bearing Steel Undergoing Cyclic Stressing

1966 ◽  
Vol 88 (3) ◽  
pp. 555-565 ◽  
Author(s):  
J. A. Martin ◽  
S. F. Borgese ◽  
A. D. Eberhardt
Keyword(s):  
Shear Stress ◽  
Fatigue Cracking ◽  
Rolling Bearing ◽  
Cyclic Stress ◽  
Bearing Steel ◽  
Rolling Contact ◽  
Microstructural Alterations ◽  
Transmission Electron ◽  
Aisi 52100 ◽  
A Cell

After prolonged cyclic stressing in rolling contact, AISI 52100 bearing steel parts develop extensive regions of microstructural alteration, designated as white etching areas. These are oriented in predictable directions relative to the rolling track. Lenticular carbides are always associated with these areas. Evidence is presented indicating that the boundaries of lenticular carbides constitute planes of weakness which may be preferred planes of fatigue cracking. In the transmission electron microscope the martensitic structure appears gradually transformed into a cell like structure by the action of cyclic stress. The size of crystallites is greatly reduced in this process. The density of microstructural change is found increased with cycling and is distributed in depth along a curve resembling that of the calculated maximum unidirectional shear stress with little or no visible change in the region of maximum orthogonal (alternating) shear stress.

Development of 5280 Rolling Bearing Steel for Improved Performance and Productivity

2009 ◽  
pp. 3-3-24
Author(s):  
PV Dimitry ◽  
PJ McDonough ◽  
G Beck ◽  
R Eberhard ◽  
HW Zock
Keyword(s):  
Rolling Bearing ◽  
Bearing Steel ◽  
Improved Performance

Study on Macro-Morphology of Hard Whirling Chips

2012 ◽  
Vol 499 ◽  
pp. 312-317
Author(s):  
Hong Yu Zhu ◽  
Ying Li
Keyword(s):  
High Efficiency ◽  
Online Monitoring ◽  
Rolling Bearing ◽  
Bearing Steel ◽  
Advanced Manufacturing Technology ◽  
Advanced Manufacturing ◽  
Machining Parameters ◽  
Essential Difference ◽  
Average Hardness ◽  
Micro Morphology

The technology of hard whirling is a kind of advanced manufacturing technology which integrates high efficiency, high precision and energy saving as a whole and attracts wide attention in machining field around home and abroad. Through studying on experiment of hard whirling machining on rolling bearing steel which has average hardness at 63.5HRC, this article focuses on different understanding of saw-tooth chips, illustrates the essential difference between macro- morphology and micro-morphology of saw-tooth chips, analyzes macro- morphology of saw-tooth chips with their corresponding machining parameters and finally raises a new solution to implement online monitoring on hard whirling machining.

Influence of Rolling Bearing Steel Ball Temperature Deformation on Radial Clearance

2013 ◽  
Vol 275-277 ◽  
pp. 51-55
Author(s):  
Xiao Zeng Wang ◽  
Jiu Hong Yang
Keyword(s):  
Linear Function ◽  
Radial Stress ◽  
Radial Displacement ◽  
Rolling Bearing ◽  
Bearing Steel ◽  
Steel Ball ◽  
Temperature Deformation ◽  
Radial Clearance ◽  
Transient Temperature ◽  
Working Temperature

According to theory of thermoelasticity, the paper deduces the formulas of the rolling bearing steel ball transient temperature, radial stress, tangential stress, radial displacement, and radial clearance, analyzes the influence of the temperature deformation on the radial clearance. The result shows that the radial displacement changes slowly on the surface, reaches the maximum when temperature becomes stable. The reduction value of the radial clearance is the linear function of the temperature and position. Fitness formula is adopted to calculate the radial clearance in the different temperature and radius. The error is less than 0.2% and 0.18%. The radial clearance formula is used to calculate the bearing’s maximum working temperature when the radial clearance reaches the standard radial clearance to ensure the reliable work of the bearing.

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