Accession Number : ADA316562
Title : Ceramic Bearing Technology Program, Volume 2. Apendices.
Descriptive Note : Final rept. 1 Aug 92-1 Jul 95,
Corporate Author : OKLAHOMA STATE UNIV STILLWATER
Personal Author(s) : Komanduri, R.
PDF Url : ADA316562
Report Date : JUL 1995
Pagination or Media Count : 217
Abstract : This project deals with the development of advanced manufacturing technologies for finishing silicon nitride balls and rollers for bearing applications. Magnetic field assisted polishing was used for finishing the balls and magnetic abrasive finishing for finishing rollers. By applying low levels of controlled force (1 N/ball or less) the damage on the finished surface is expected to be minimal. Also chemo-mechanical polishing was used to minimize the brittle fracture. Using these techniques the polishing time was reduced from some 10-20 weeks to about 20 hours. The finish obtained was about 5-10 nm and the sphericity in the range of 0.5 -1 micrometer. In this report various technical papers dealing with various aspects of the finishing of silicon nitride balls and rollers prepared on this contract are included as appendices. They include the technology of polishing, optimum polishing conditions, the thermal model of the spot temperature generated in polishing, and finally the material removal mechanisms in polishing.
Descriptors : *SURFACE FINISHING, *ROLLER BEARINGS, *SILICON NITRIDES, *BALL BEARINGS, THERMAL PROPERTIES, MAGNETIC FIELDS, OPTIMIZATION, HOT PRESSING, FRACTURE(MECHANICS), CERAMIC MATERIALS, BRITTLENESS, THERMAL ANALYSIS, SILICON CARBIDES, GRINDING, POLISHING, CHROMIUM COMPOUNDS, ABRASIVE BLASTING.
Subject Categories : Ceramics, Refractories and Glass
Coatings, Colorants and Finishes
Machinery and Tools
Distribution Statement : APPROVED FOR PUBLIC RELEASE