Preparation method of abrasive wheel for cutting of blue glass infrared cut-off optical filter

Abstract

The invention belongs to a preparation method of an abrasive wheel for cutting of a blue glass infrared cut-off optical filter. Ultrafine-grain-size powder is adopted as raw materials of a metallic bond, better holding force on diamonds is achieved, the service life of the abrasive wheel can be prolonged, and the cutting speed of the abrasive wheel can be increased. By means of the composite mixing process adopting a three-dimensional mixer for premixing and ultrasonic wet mixing, the quality stability of the abrasive wheel and consistency of the cutting performance of the abrasive wheel are guaranteed. A certain amount of boron carbide and a certain amount of titanium diboride are added into the bond, do not participate in sintering and can fall off from the bond in time in the cutting process, and therefore keenness of the abrasive wheel is improved, the stable cutting capacity of the abrasive wheel is improved, and tool repair is avoided in the cutting process; and meanwhile due to the fact that the hardness of the two kinds of matter is high, the cutting assisting effect is achieved, and the cutting capacity of the diamond abrasive wheel is improved. The re-pressing process is adopted, an abrasive wheel blank obtained through hot-pressing sintering is strengthened, and therefore the density, rigidity and strength of the abrasive wheel are improved, and the mechanical performance of the abrasive wheel is further guaranteed.

Description

technical field [0001] The invention belongs to the technical field of superhard materials, and in particular relates to a preparation method of a blue glass infrared cut-off filter cutting grinding wheel. Background technique [0002] With the continuous improvement of the photographic quality requirements of electronic products such as smartphones, photographic tablets, and digital cameras, the lens pixels are getting higher and higher. At present, high-end lenses with 800M pixels or even more than 1500M pixels have become the mainstream of the market. It is estimated that by 2016, the shipment of smartphones with more than 8 million pixels will reach 750 million, accounting for more than 70% of the total shipments of smartphones. [0003] As the core component of high-end lens modules with pixels above 800M, the blue glass infrared cut filter is located behind the optical prism in the camera and before the CMOS sensor. Target surface virtual image and color distortion ca...

AI Technical Summary

Problems solved by technology

However, due to the flake shape of graphite, it is not easy to be uniformly dispersed and easily agglomerated, resulting in poor uniformity of the grinding wheel structure, and there is a risk of block shedding and fracture during cutting. In addition, graphite itself has no grinding ability and cannot improve the grinding performance of fine-grained diamond grinding wheels. Therefore, Not suitable for use in metal bond blue glass IR cut filter cut-off wheels