Ceramic Mold for Curved Optical Glass Sagging Process
| Autor: | AO, CHIN WA, 歐展華 |
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| Rok vydání: | 2017 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 106 The demand in making curved optical glasses is increasing for 3C products. The possible processes for manufacturing these glasses are grinding and polishing, glass molding and glass sagging. The researcher in our lab had used Stavaxesr stainless steel as the mold material for glass sagging process, but the experimental product suffered from low surface quality. In order to process a high surface quality curved optical glasses, e.g. curved cover glasses on the smart band, this study replaces stainless steel with ceramic mold materials to improve glass sagging process. With SiC mold for glass sagging, experimental results showed that good anti-sticking property can be obtained if DLC was coated on SiC surface and the working temperature of mold was kept at 485 ℃. With the other mold material, a specific ceramic material provided by supplier with unknown specifications, experimental result showed this specific ceramic mold had very good anti-sticking property even without any coating. The specific ceramics have relatively low heat transfer coefficient, therefore, lower heating rate |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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