Aspherical optical lenses are widely used in the field of image acquisition systems such as cell phone lenses, digital cameras and missile windows. Given the advantages of high efficiency, high molding accuracy and low lens damage, mold hot bending manufacturing (moldmaking) has become an ideal manufacturing method. During the molding process, the performance of the hot bending mold is central to the quality of the lens. Traditional graphite molds are limited by low hardness, oxidation resistance, and high-temperature strength, making it difficult to meet the demands of continuous manufacturing. Currently, tungsten carbide, which is the most commonly used alternative material in the industry, is also difficult to meet the high efficiency and high quality manufacturing of curved glass due to its poor fracture toughness and oxidation resistance. Based on this background, the project intends to develop a new generation of high-entropy tungsten carbide ceramic hot bending mold materials with high hardness and high toughness, wear-resistant, oxidation-resistant and compression-resistant, and to achieve mastery of the key technologies for efficient manufacturing of new hot bending molds, so as to gradually realize the substitution of the existing mold materials, and to improve the manufacturing efficiency and precision of aspheric lenses as a whole.
