Experimental investigation of cutting mechanism of KDP crystal

C. H. An; P. Q. Fu; F. H. Zhang; Q. Xu; J. F. Zhang

doi:10.1117/12.867229

6 October 2010 Experimental investigation of cutting mechanism of KDP crystal

C. H. An, P. Q. Fu, F. H. Zhang, Q. Xu, J. F. Zhang

Proceedings Volume 7655, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 76551W (2010) https://doi.org/10.1117/12.867229
Event: 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies, 2010, Dalian, China

Abstract

The Potassium Dihydrogen Phosphate(KDP) crystal is used as key non-linear optical material in Inertial Confinement Fusion(ICF). Traditional photoprocessing methods such as grinding and polishing are not suitable and Single Point Diamond Fly Cutting is adopted because of its special physicochemical characteristics. A method of observing KDP chips to study cutting mechanics has been presented in this paper. The KDP crystal was processed by a mono diamond tool with arc-nose, and plastic deformation can be found in the inside chip by optical microscope, also apparent transition of brittle fracture to plastic deformation can be found along the width direction of chips. By this method, chips in different cutting parameters were compared to study the relationship between critical thickness of ductile removal and cutting parameters like cutting depth and feedrate. Cutting experiments along different direction on different crystal planes were operated to research anisotropic characteristic of KDP crystal.

Citation Download Citation

C. H. An, P. Q. Fu, F. H. Zhang, Q. Xu, and J. F. Zhang "Experimental investigation of cutting mechanism of KDP crystal", Proc. SPIE 7655, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 76551W (6 October 2010); https://doi.org/10.1117/12.867229

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