The Importance of Crankshaft Surface Texture to Bearing System Reliability

Crooks, C. S.; Parker, Derrick

doi:10.4271/960983

Cited by 5 publications

(1 citation statement)

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“…After that, a sliding bearing was randomly taken out to observe the metallographic structure under a metallographic microscope and the bonding status of the joint interface under a scanning electron microscope (SEM). Next, three test bearings were mounted on the sapphire fatigue test machine [16][17][18][19] in sequence and subjected to fatigue tests in accordance with the test procedure. Finally, the test results were analyzed in depth.…”

Section: Introductionmentioning

confidence: 99%

Study on fatigue strength of SnSb11Cu6 babbitt-steel bimetal sliding bearing material prepared by MIG brazing

Wang

Zhang

Chen³

2020

Mechanics & Industry

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The babbitt-steel bimetal sliding bearing material prepared by the MIG brazing has been applied in many fields. In the application, usually only the bonding force is tested, and the fatigue strength is not evaluated. For this reason, this study referred to the test method for the fatigue strength of bearing materials of internal combustion engines, used the sapphire test machine (Dana Glacier Vandervell Bearings, UK) to inspect the SnSb11Cu6 babbitt-steel bimetal material prepared by MIG brazing, and analyzed the test results in depth. The test results show that, the fatigue strength of the bimetal material is more than 40 MPa. In comparison, according to the same test method and conditions on the same sapphire test machine, the fatigue strength of the SnSb11Cu6 babbitt-steel bimetal bearing material obtained by the centrifugal casting method after optimizing process was usually around 35 MPa. Therefore, the MIG brazing could produce higher fatigue strength for SnSb11Cu6 babbitt-steel bimetal bearing material. In addition, in this study, the process of fatigue failure was usually that after the microcracks were generated on the surface, they expanded to the inside of the lining, thereby resulting in spalling. This study has guiding significance for engineering practice and scientific research.

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Section: Introductionmentioning

confidence: 99%