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Single Point Diamond Turning of Quartz

         

Project Time Frame: May 2007 – April 2008 

Material:Synthesized Fused Silica (Spectrosil 2000)

Project Aim: * Improve the surface roughness of the material without causing any                                                                                                      ................surface/subsurface damage

                  * Maximize on material removal rate by varying the depth of cut, feed rate and  
                cutting speed
             * Minimize diamond tool wear
Project Description: The main goal of this experiment is to establish a production-level process condition for quartz mirror fabrication via ductile mode machining. A 6” diameter Spectrosil 2000 round disk (0.250” thick) was used to carry out the experiments. The very first task was to see if this material can be diamond turned at all with the current setup for SPDT (similar to setup used for the 6” TWS CVD-SiC). If ductile mode machining is possible, then SPDT of quartz will be attempted to improve the surface roughness (Ra < 50nm) and monitor the tool wear. These results obtained will be used to predict machining and tool wear data for a 14” diameter round quartz disk which will be used as a nose cover for a high power Airborne Laser (ABL) device (the machining of the 14” diameter disk will not be carried out at Western Michigan University).








Project in Detail: View

Related Publications:
  1. "Single Point Diamond Turning Effects on Surface Quality and Subsurface Damage in Ceramics", ASME-MSEC, West Lafayette, Indian, USA, 2009. View
Related Presentations:
  1. "Single Point Diamond Turning Effects on Surface Quality and Subsurface Damage in Ceramics", ASME-MSEC, West Lafayette, Indian, USA, 2009. View

Material Data Sheet: View

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