Metallic bond and abrasive wheel used for cutting of white glass infrared cut-off optical filter and manufactured through metallic bond

Abstract

The invention relates to a metallic bond and an abrasive wheel used for cutting of a white glass infrared cut-off optical filter and manufactured through the metallic bond. A high tin and molybdenum formula is adopted in the metallic bond, so that the brittleness of the bond is improved, and the abrasive wheel can be subjected to micro-breaking more easily so as to be subjected to self-sharpening during use. Molybdenum disulfide has the good lubricity and anti-attrition function, the keenness of the abrasive wheel is further improved by means of adding of molybdenum disulfide powder with coarse granularity being 200 / 270 meshes, and therefore the abrasive wheel can achieve the aim that finishing is avoided in the cutting process of the infrared cut-off optical filter. By means of adding of a silver component with thermal conductivity reaching up to 420 W / mK, heat radiation of the abrasive wheel is greatly improved, and the cutting speed of the abrasive wheel is increased easily. Vanadium carbide has high hardness, and a certain amount of vanadium carbide is added into the bond, so that the service life of the abrasive wheel is prolonged. A green body of the abrasive wheel is high in forming and firing pressure, the high density of the abrasive wheel is guaranteed, the rigidity of the abrasive wheel is improved, and then the product quality and cutting straightness of the abrasive wheel are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of superhard materials, and in particular relates to a metal bond and a white glass infrared cut-off filter cutting wheel made of the same. Background technique [0002] The white glass infrared cut-off filter uses precision optical coating technology to alternately coat several layers of high and low refractive index optical films on the optical ultra-white glass substrate to achieve high transparency in the visible light region (400nm~630nm) and near infrared (700nm~1100nm) ) Cut-off high-end optical components, mainly used in digital imaging fields such as camera lenses, mobile phone cameras, and car cameras, to eliminate the influence of infrared light on CCD / CMOS imaging, improve the effective resolution and color reproduction of CCD / CMOS image sensors, Make the image clearer and more stable. [0003] The white glass infrared cut filter has many manufacturing processes, including optical substrate grin...

AI Technical Summary

Problems solved by technology

However, this type of grinding wheel has the problems of weak diamond holding force, poor thermal conductivity and heat resistance, resulting in slower cutting speed (≤5mm / s); at the same time, limited by the characteristics of the resin bond itself, the resin bonded grinding wheel wears quickly and the life of the grinding wheel Very short (cutting length ≤ 300m), frequent tool changes affect production efficiency and increase costs

In addition, the resin-bonded grinding wheel has low strength, and it is easy to break the knife during cutting, which has certain safety hazards

[0006] Relevant manufacturers at home and abroad have also tried to introduce some metal-bonded diamond grinding wheels for cutting white glass infrared cut-off filters. The coating on the light sheet falls off, the self-sharpening of the grinding wheel is poor, and the knife needs to be repaired frequently during use, etc., which cannot fully meet the cutting requirements of white glass infrared cut-off filters.