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Mobile용 Camera Window의 공정 개선에 관한 연구
안해원(Hae Won Ahn),신기훈(Ki Hoon Shin),오재호(Jae Ho Oh),김학철(Hak Chul Kim),권수근(Soo Kun Kwon),최성대(Seong Dae Choi) 한국기계가공학회 2015 한국기계가공학회지 Vol.14 No.5
The glass used for Mobile Camera Window is required to have high strength. Cell type manufacturing by means of CNC is widely used for camera window. Individual loading and unloading is needed for each process, such as painting and PVD, in cell type manufacturing. The purpose of this study is to search the enhanced manufacturing process with sheet type throughout bulk unit production in painting and PVD. This study includes sheet type manufacturing processes such as laser cutting, wet etching, 2nd tempering, printing, and AF/AR coating.
PTCR을 이용한 3-D Glass 열성형 금형의 내부 온도 측정에 관한 연구
이호순(Ho-Soon Lee),안해원(Hae-Won Ahn),김시균(Si-Gyun Kim),김기만(Gi-Man Kim),최성대(Seong-Dae Choi) 한국기계가공학회 2017 한국기계가공학회지 Vol.16 No.6
In order to make 3-D glass from 2-D glass for mobile device windows, a mold is used for heat forming. In this process, the temperature of the glass is very important. However, measuring the temperature of the glass inside the mold is very difficult owing to the mold structure and the high temperature. The purpose of this study is to measure the temperature inside the mold by using Process Temperature Control Rings (PTCR) and to compensate for temperature differences in the heat forming machine and inside the mold. The measuring method uses the ceramic material’s shrinkage characteristics, which makes it possible to measure the temperature inside the mold at various locations.