PROCESSING OF CERAMICS - SURFACE FINISHING STUDIES.
Abstract
An experimental grinding facility was established so that a systematic study can be made of the effects of grinding variables on the strength of ceramics. The equipment employed is a high precision universal cylindrical grinding machine incorporating several features which make it particularly suitable for this work. The material on which the effect of grinding variables is being evaluated is a 99.5% alumina body whose mechanical properties are well documented from previous studies. The strength of test specimens, which is the main criterion for the evaluation of the effects of grinding, is measured by the expanded ring test method developed at Stanford Research Institute. In machining test specimens three basic grinding steps are involved: facing, external cylindrical grinding, and internal cylindrical grinding. All machining is done with diamond wheels and the individual variables under study are related to the rate of material removal and the quality of the surface of the finished piece. Necessary skills have been developed, the performance of the equipment has been evaluated, a number of work procedures have been established, and several special fixtures and accessories have been designed and built. The equipment in its present state is capable of producing a wide range of grinding conditions in a highly controllable and reproducible manner. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1967
- Accession Number
- AD0654209
Entities
People
- E. P. Farley
- R. Sedlacek
Organizations
- SRI International