Effects of Rolling on Load Bearing Capacity of Sintered Metal Gears

2007 ◽  
Author(s):  
Takao Koide ◽  
Takatoshi Maemori ◽  
Teruie Takemasu ◽  
Kouitsu Miyachika ◽  
Chiaki Namba
Keyword(s):  
Bearing Capacity ◽  
Surface Properties ◽  
Contact Fatigue ◽  
Fatigue Tests ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Bending Fatigue ◽  
Gear Teeth ◽  
Sintered Metal

This paper describes the effects of surface rolling on the load bearing capacity of sintered metal gears. Sintered metal gears and rollers were surface-rolled under various amounts of rolling. The effects of rolling on the surface properties were examined by measuring the porosities and hardness near the surfaces of the rolled gear teeth and rollers. Bending fatigue tests for the surface-rolled sintered metal gears and contact fatigue tests for the rollers were carried out. The effects of the amount of rolling on the load bearing capacity of sintered metal gears and rollers were determined, and these results were compared with the results for as-sintered and wrought steel gears and rollers.

Load Bearing Capacity of Surface-Rolled Sintered Metal Gears

2008 ◽  
Vol 2 (5) ◽  
pp. 334-340 ◽  
Author(s):  
Takao Koide ◽  
◽  
Ichiro Ishizuka ◽  
Teruie Takemasu ◽  
Kouitsu Miyachika ◽  
...  
Keyword(s):  
Bearing Capacity ◽  
Surface Properties ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Gear Teeth ◽  
Sintered Metal ◽  
Heat Treated ◽  
Effect Of Surface

The load bearing capacity of surface-rolled sintered metal gears were investigated. Sintered metal gears were made using hobs with different tooth profiles and surface-rolled to different degrees using two different rolling machines and heat-treated. The effect of surface-rolling on surface properties were examined by measuring porosity and hardness near rolled gear teeth surfaces. Run tests for test gears were conducted. The effects of surface-rolling on the load bearing capacity of sintered metal gears were determined, and the results were compared to the results for wrought steel gears.

Load Bearing Capacity of Super-Carburized Gears

2003 ◽  
Author(s):  
Takao Koide ◽  
Koji Tsubokura ◽  
Satoshi Oda ◽  
Chiaki Namba
Keyword(s):  
Bearing Capacity ◽  
Failure Modes ◽  
Contact Fatigue ◽  
Case Depth ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Bending Fatigue ◽  
Surface Durability ◽  
Carburized Gear ◽  
The Impact

This paper describes a study on the load bearing capacity of super-carburized gears. Test gears and rollers of MAC14 and SCM415 steels were super or eutectoid-carburized under different carburizing conditions. The impact and bending fatigue tests for test gears and the contact fatigue test for test rollers were carried out. The effects of case depths on the impact and bending fatigue strengths of gears and the surface durability of rollers were determined. The impact breaking limit energy of super-carburized gears was found to be larger by about 15% than that of eutectoid-carburized gears irrespective of case depth. The bending fatigue strength of the super-carburized gear was found to be almost equal to that of the eutectoid-carburized gear. The surface durability of the super-carburized roller becomes larger with an increase of case depth and is larger than that of eutectoid-carburized rollers in the case of larger case depth. The surface failure modes for super and eutectoid-carburized rollers were spalling. The load bearing capacity of super and eutectoid-carburized gears was found to become larger by shot-peening.

Load Bearing Capacity of Surface-Rolled Sintered Metal Gears without Grinding

2018 ◽  
Vol 2018.56 (0) ◽  
pp. 515
Author(s):  
Syunsuke FUJIYAMA ◽  
Takao KOIDE ◽  
Junichi HONGU ◽  
Atsutaka TAMURA ◽  
Teruie TAKEMASU ◽  
...  
Keyword(s):  
Bearing Capacity ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Sintered Metal

scholarly journals 107 Load bearing Capacity of Newly Developed High Density Sintered Metal Gears

2007 ◽  
Vol 2007 (0) ◽  
pp. 47-50
Author(s):  
Takao KOIDE ◽  
Ichiro ISHIZUKA ◽  
Teruie TAKEMASU ◽  
Kouitsu MIYACHIKA ◽  
Chiaki NAMBA
Keyword(s):  
Bearing Capacity ◽  
High Density ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Sintered Metal

915 Effect of Surface-Rolling on Load Bearing Capacity of High Density Sintered Metal Gears

2009 ◽  
Vol 2009.47 (0) ◽  
pp. 317-318
Author(s):  
Takao KOIDE ◽  
Yasuhiro FUKAI ◽  
Ichiro ISHIZUKA ◽  
Teruie TAKEMASU ◽  
Kouitsu MIYACHIKA
Keyword(s):  
Bearing Capacity ◽  
High Density ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Sintered Metal ◽  
Effect Of Surface

3125 Load Bearing Capacity of Newly Developed High Density Sintered Metal Gears

2008 ◽  
Vol 2008.4 (0) ◽  
pp. 47-48
Author(s):  
Takao KOIDE ◽  
Ichiro ISHIZUKA ◽  
Teruie TAKEMASU ◽  
Kouitsu MIYACHIKA
Keyword(s):  
Bearing Capacity ◽  
High Density ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Sintered Metal
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