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1 Archives of Materials Science and Engineering

1 2014

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Investigation of alumina pellets for optical glass grinding

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Bouzid D. , Belkhir N.

2014

tom Vol. 67, nr 1

14--17

Purpose: is investigation of alumina pellets for optical glass grinding from a mixture made of an abrasive powder of high purity α alumina and of a binding vitreous material. Design/methodology/approach: The different manufacturing tests on the pellets tools made it possible to optimize certain parameters. This remains, however, insufficient to obtain a tool with optimal efficiency. It is in fact; difficult to simultaneously take into account all of the manufacturing parameters. Findings: The sizes of the grains, the densification loading and the firing duration have an influence on the quality of the ground surface, on the amount of material removed and on the porosity of the pellets, a characteristic, that determines their lifetime. Researches limitations/implications: The weak resistance to wear of the coarse and fine tools can be explained by the grains becoming detached from the binding matrix during the grinding process. The used grains are blunted during the grinding process. Originality/value: An optimal combination of grinding process parameters was found for each phase of the glass grinding (coarse, medium and fine grinding).