Proceedings of the
9th International Conference of Nanomanufacturing (nanoMan2024)
December 1 – 4, 2024, Singapore
Study on the Surface/Interface Modification and Manufacturing of Tungsten Carbide Mold Material
Department of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
ABSTRACT
Fly eye arrays can realize light beam modulation and light spot homogenization. It has significant application requirements in high-performance optoelectronic systems, such as detection guidance, high-definition imaging, and laser weapons. Precision glass molding (PGM) is an effective method to achieve precise and efficient manufacturing of fly eye array micro-optics. The entire PGM process includes four stages: heating and insulation, high temperature and pressure, reduced pressure annealing, and cooling and demolding. It has high processing accuracy, good consistency, and high efficiency, and is suitable for mass manufacturing of micro optical devices. While it also poses higher requirements on the performance of the mold material, including high temperature resistance, high hardness, high strength, and long service life; In addition, during this process, the mold and optical lens structure are completely complementary, and the accuracy of the mold directly determines the shape accuracy of the lens, as shown in Fig 1. The selection and manufacturing of mold materials are particularly important.
Keywords: Tungsten Carbide; Surface/Interface Modification; Mold manufacturing;.
