Magnetic Field Assisted Finishing of Ceramics—Part I: Thermal Model
- 1 October 1998
- journal article
- Published by ASME International in Journal of Tribology
- Vol. 120 (4), 645-651
- https://doi.org/10.1115/1.2833761
Abstract
A thermal model for magnetic field assisted polishing of ceramic balls/rollers is presented. The heat source at the area of contact between the balls and the abrasives where material removal takes place is approximated to a disk. The disk heat source is considered as a combination of a series of concentric circular ring heat sources with different radii. Each ring in turn is considered as a combination of a series of infinitely small arc segments and each arc segment as a point heat source. Jaeger’s classical moving heat source theory (Jaeger, 1942; Carslaw and Jaeger, 1959) is used in the development of the model, starting from an instantaneous point heat source, to obtain the general solution (transient and steady-state) of the moving circular ring heat source problem and finally the moving disc heat source problem. Due to the formation of fine scratches during polishing (on the order of a few micrometers long), the conditions are found to be largely transient in nature. Calculation of the minimum flash temperatures and minimum flash times during polishing enables the determination if adequate temperatures can be generated for chemo-mechanical polishing or not. This model is applied in Part II for magnetic float polishing (MFP) of ceramic balls and in Part III for magnetic abrasive finishing (MAF) of ceramic rollers.Keywords
This publication has 13 references indexed in Scilit:
- Magnetic Field Assisted Finishing of Ceramics—Part III: On the Thermal Aspects of Magnetic Abrasive Finishing (MAF) of Ceramic RollersJournal of Tribology, 1998
- Frictional Heating of Tribological ContactsJournal of Tribology, 1995
- Maximum and Average Flash Temperatures in Sliding ContactsJournal of Tribology, 1994
- An interpolation formula for flash temperaturesWear, 1991
- Flash temperatures due to friction and Joule heat at asperity contactsWear, 1985
- Transient Temperatures in the Vicinity of an Asperity ContactJournal of Tribology, 1985
- Interfacial Temperature Distribution Within a Sliding Hertzian ContactA S L E Transactions, 1971
- Distribution of Heat between Sliding SurfacesJournal of Mechanical Engineering Science, 1967
- Surface Temperatures in Sliding ContactA S L E Transactions, 1964
- The temperature of rubbing surfacesWear, 1959