Channeling behavior of lubricating greases in rolling bearings: Identification and characterization
| Autor: | Piet M. Lugt, Sathwik Chatra K R |
|---|---|
| Přispěvatelé: | Surface Technology and Tribology |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
02 engineering and technology Churning law.invention Grease channeling 0203 mechanical engineering law Phase (matter) Temperature profile Grease Composite material Bearing (mechanical) Grease micro structure Mechanical Engineering Structural integrity Surfaces and Interfaces 021001 nanoscience & nanotechnology Microstructure n/a OA procedure Surfaces Coatings and Films Characterization (materials science) 020303 mechanical engineering & transports Mechanics of Materials 0210 nano-technology Early phase |
| Zdroj: | Tribology international, 143:106061. Elsevier |
| ISSN: | 0301-679X |
| Popis: | The churning phase, i.e., the early phase in bearing operation, ends when the grease has been migrated from in-between the rolling elements to the unswept area. This process is often called “channeling or clearing”. In the present study, early stage temperature profiles of running bearings are used to identify the length of this phase using different greases. It is shown that grease undergoes a microstructural change during the channeling/churning phase. Good (“peak type”) channeling greases maintain their structural integrity and undergo only a very short period of churning, whereas for poor (“plateau type”) channeling greases a significant microstructure degradation occurs. This is ascribed to the longer churning phase. The channeling properties may be attributed to the microstructural flexibility of greases. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect