What should be paid attention to when processing quartz optical glass slices?

When processing quartz optical glass slices, attention should be paid to cutting equipment, cutting parameters, operating specifications and other aspects to ensure the quality and processing efficiency of the slices. The specific matters are as follows:

Cutting equipment and tools

Equipment selection: High-precision cutting equipment specially used for optical glass cutting, such as a cutting machine with diamond cutting wheel, should be selected, which can provide stable cutting power and accurate cutting path control to ensure cutting accuracy and quality.

Matching of cutting wheel: according to the hardness and thickness of quartz optical glass, choose a diamond cutting wheel with appropriate granularity and material. Generally speaking, to cut hard quartz optical glass, it is necessary to use a cutting wheel with finer granularity and higher diamond content to ensure the cutting effect and efficiency. At the same time, it is necessary to regularly check the wear of the cutting wheel and replace the seriously worn cutting wheel in time so as not to affect the cutting quality.

Auxiliary device: Ensure that the cutting equipment is equipped with accurate positioning and clamping devices, which can firmly fix the quartz optical glass blank in the cutting position, so as to prevent displacement during cutting and affect the cutting accuracy. At the same time, a good cooling and lubrication system can effectively reduce the temperature during cutting, reduce the fracture and deformation of glass caused by thermal stress, and improve the service life of cutting wheel.

Cutting parameter setting

Cutting speed: the cutting speed should not be too fast, otherwise it will easily lead to the increase of friction between the cutting wheel and the glass, generate too much heat, and make the glass overheat locally, thus causing cracks or even cracks. For quartz optical glass, the cutting speed is generally controlled at 100-300 mm per minute, and the specific speed needs to be adjusted according to the thickness and hardness of the glass.

Feed: the feed refers to the distance that the cutting wheel advances every revolution in the cutting process. Appropriate feed rate can ensure cutting efficiency and quality. If the feed rate is too large, the cutting force will increase and the glass edge will easily crack. If the feed is too small, the cutting efficiency will be reduced. Generally, the feed rate can be controlled between 0.05 and 0.2 mm per revolution.

Cutting depth: The cutting depth should be determined according to the thickness of quartz optical glass. Generally, the cutting depth should not exceed 1/3 of the glass thickness each time, so as to reduce stress concentration during cutting and avoid glass breakage. When cutting thick glass, multiple cuts can be used to gradually reach the required cutting depth.

Operating specifications and safety

Material preparation: before cutting, the quartz optical glass blank should be inspected to ensure that there are no obvious defects on its surface, such as cracks and bubbles. At the same time, clean the blank to remove dust and impurities on the surface, so as not to affect the cutting quality.

Operating posture: The operator should keep the correct operating posture, ensure the body is stable, and accurately control the operating handle of the cutting equipment with both hands. In the process of cutting, we should concentrate our attention and operate in strict accordance with the operating procedures to avoid safety accidents or cutting quality problems caused by operational errors.

Safety protection: You must wear corresponding personal protective equipment, such as goggles and gloves, to prevent glass chips generated during cutting from splashing and injuring people. At the same time, it is necessary to ensure that the cutting work area is clean and tidy, and there is no debris accumulation to prevent safety accidents caused by tripping or collision.

environmental conditions

Temperature and humidity: The cutting of quartz optical glass requires certain ambient temperature and humidity. Generally, the temperature should be controlled at 20℃-25℃ and the relative humidity should be 40%-60%. Too high or too low temperature and humidity may affect the physical properties of glass, increase the difficulty of cutting, and even lead to cracks or deformation of glass.

Cleanliness: the cutting environment should be kept clean to reduce the influence of dust and impurities. Impurities such as dust may enter the cutting gap, affecting the cutting accuracy, and may also scratch the glass surface and reduce the optical properties of the glass.

Slice post-processing

Edge treatment: the edge of the cut quartz optical glass slice may have defects such as burr and edge collapse, so edge treatment is needed. Grinding, polishing and other processes can be used to make the edge of the slice smooth and flat to meet the requirements of subsequent processing and use.

Cleaning and inspection: clean the slice to remove cutting fluid, debris and other impurities on the surface. Then, the dimensional accuracy, flatness, verticality and other indicators of the slice are detected by optical detection equipment to ensure that the quality of the slice meets the requirements.