scholarly journals Surface durability and surface failure of a thermally refined steel roller using a variable specific sliding type contact roller testing machine.

1989 ◽  
Vol 32 (1) ◽  
pp. 106-112
Author(s):  
Akira YOSHIDA ◽  
Komei FUJITA
Keyword(s):  
Testing Machine ◽  
Steel Roller ◽  
Surface Failure ◽  
Type Contact ◽  
Surface Durability ◽  
Contact Roller ◽  
Refined Steel ◽  
Specific Sliding

2306 Surface durability of thermal refined steel roller with a hardness around HV350

2010 ◽  
Vol 2010.10 (0) ◽  
pp. 205-206
Author(s):  
Masahiro FUJII ◽  
Masafumi AOBA ◽  
Noritada FUJIMURA ◽  
Kenzo MIURA
Keyword(s):  
Steel Roller ◽  
Surface Durability ◽  
Refined Steel

Surface Durability of Spur Gears at Hertzian Stresses Over Shakedown Limit

1974 ◽  
Vol 96 (2) ◽  
pp. 359-372 ◽  
Author(s):  
Akira Ishibashi ◽  
Taku Ueno ◽  
Shigetada Tanaka
Keyword(s):  
Fatigue Testing ◽  
Testing Machine ◽  
Carbon Steels ◽  
Rolling Contact ◽  
Hertzian Contact ◽  
Load Testing ◽  
Short Period ◽  
Hertzian Contact Stress ◽  
Surface Durability ◽  
Shakedown Limit

Using a new type of gear-load testing machine and a disk-type rolling fatigue testing machine designed and made by the authors, the upper limits of Hertzian contact stress allowable on rolling contact surfaces were investigated. It was shown conclusively that gears and rollers made of soft carbon steels could be rotated beyond 108 revolutions at Hertzian stresses over shakedown limit (≈ 0.4 HB). In the case of gears, pits having a pitting area ratio of 0.04 percent occurred during 1.16 × 108 rotations at a Hertzian stress of 0.50 HB. However, no pitting occurred on the roller rotated through 1.20 × 108 revolutions at a Hertzian stress of 0.71 HB, although appreciable changes in texture were observed at the subsurface. In order to rotate gears or rollers at Hertzian stresses over shakedown limit, their surface must either be very smooth initially or after a short period of running, and an oil film must be formed between contacting surfaces.

scholarly journals Surface Durability of Tufftrided Steel Roller

1982 ◽  
Vol 25 (199) ◽  
pp. 127-133
Author(s):  
Komei FUJITA ◽  
Akira YOSHIDA ◽  
Mikio TAKADA
Keyword(s):  
Steel Roller ◽  
Surface Durability
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