scholarly journals Inclusion Rating by Statistics of Extreme for Electron Beam Remelted Super Clean Bearing Steel and Its Application to Fatigue Strength Prediction

1995 ◽  
Vol 81 (10) ◽  
pp. 1019-1024 ◽  
Author(s):  
Toshiyuki TORIYAMA ◽  
Yukitaka MURAKAMI ◽  
Teruo YAMASHITA ◽  
Kazuichi TSUBOTA ◽  
Kyozaburo FURUMURA
Keyword(s):  
Electron Beam ◽  
Fatigue Strength ◽  
Bearing Steel ◽  
Strength Prediction

An Initial Appraisal of the Contact Fatigue Strength of Electron Beam Melted Bearing Steel

1972 ◽  
Vol 94 (2) ◽  
pp. 174-178 ◽  
Author(s):  
R. L. Widner
Keyword(s):  
Electron Beam ◽  
Fatigue Strength ◽  
Contact Fatigue ◽  
Bearing Steel ◽  
Mineral Oils ◽  
Contact Fatigue Strength ◽  
Bearing Life ◽  
Life Tests ◽  
Tapered Roller ◽  
Tapered Roller Bearings

Three test groups of 2.75 in. bore tapered roller bearings were manufactured from pilot heats of cold hearth electron beam remelted modified 4620 steel, a heat of standard consumable electrode vacuum remelted (CV) 4620 steel and from conventionally melted modified 4620 bearing steel. Bearing life tests were performed in a synthetic fluid and two mineral oils of different viscosity to determine the contact fatigue strength of the electron beam melted steel as compared to the CV steel and conventional steel. The electron beam and the consumable vacuum melted steel had equivalent contact fatigue strength in this initial appraisal. The CV steel had contact fatigue strength 4.5 to 9.8 times better than the conventional bearing steel.

Effect of Repeated Quenching on the Rotating Bending Strength of SAE52100 Bearing Steel

2012 ◽  
Vol 457-458 ◽  
pp. 1025-1031 ◽  
Author(s):  
Koshiro Mizobe ◽  
Edson Costa Santos ◽  
Takashi Honda ◽  
Hitonobu Koike ◽  
Katsuyuki Kida ◽  
...  
Keyword(s):  
Fatigue Strength ◽  
Bending Strength ◽  
High Strength ◽  
Bearing Steel ◽  
Rolling Contact ◽  
High Wear Resistance ◽  
High Carbon ◽  
Austenite Grain ◽  
High Fatigue ◽  
Rotating Bending

Martensitic high carbon high strength SAE 52100 bearing steel is one of the main alloys used for rolling contact applications where high wear resistance are required. Due to its high fatigue strength, SAE 52100 is recently being used not only for the production of bearings but also shafts. Refining of prior austenite grain through repeated quenching is a procedure that can be used to enhance the material’s strength. In this work, the microstructure of repeatedly quenched SAE 52100 steel and its fatigue strength under rotating bending were investigated. It was found that repeated furnace heating and quenching effectively refined the martensitic structure and increased the retained austenite content. Repeated quenching was found to improve the fatigue strength of SAE 52100.

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