A method of processing chalcogenide glass

A technology of chalcogenide glass and particle size, which is applied in the field of infrared optics, can solve problems such as product surface scratches, achieve the effect of improving surface accuracy and stability, simple steps, and improving surface quality

Active Publication Date: 2022-07-08
安徽中飞科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a method for processing chalcogenide glass, which can not only solve the problem of scratches on the surface of the product caused by scratches during the processing of asphalt molds, but also the steps Simple, fewer chemicals, safer

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  • A method of processing chalcogenide glass

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Effect test

Embodiment 1

[0033] This embodiment provides a method for processing chalcogenide glass. The method for processing chalcogenide glass in this embodiment includes the following steps:

[0034] (1) The chalcogenide glass (specification: D40mm*2.4mm spherical surface; composed of As40Se60) is ground with a brass grinding disc and emery with a particle size of W10 to remove knife marks, chipping and other defects, while ensuring the thickness of the chalcogenide glass meet the requirements of the grinding step;

[0035] (2) rough polishing the chalcogenide glass obtained in step (1) with a polyurethane mold and alumina polishing powder with a particle size of W3.0, and the pressure is 2kgf / cm 2 , the spindle speed is 100RPM, the swing shaft speed is 60RPM, and the duration is 2h to remove trachoma;

[0036] (3) The chalcogenide glass obtained in step (2) is subjected to the first fine polishing using an asphalt mold and alumina polishing powder with a particle size of W1.0, wherein the aspha...

Embodiment 2

[0040] This embodiment provides a method for processing chalcogenide glass. The method for processing chalcogenide glass in this embodiment includes the following steps:

[0041] (1) The chalcogenide glass (specification: D103mm*14.85mm spherical surface; composed of As40Se60) is ground with a cast iron grinding disc and emery with a grain size of W10 to remove defects such as knife marks and chipping, and at the same time ensure that the thickness of the chalcogenide glass reaches Requirements for the grinding step;

[0042] (2) rough polishing the chalcogenide glass obtained in step (1) with a polyurethane mold and alumina polishing powder with a particle size of W3.0, and the pressure is 2kgf / cm 2 , the spindle speed is 100RPM, the swing shaft speed is 55RPM, and the duration is 2.5h to remove trachoma;

[0043] (3) The chalcogenide glass obtained in step (2) is subjected to the first fine polishing using an asphalt mold and alumina polishing powder with a particle size o...

Embodiment 3

[0047] This embodiment provides a method for processing chalcogenide glass. The method for processing chalcogenide glass in this embodiment includes the following steps:

[0048] (1) The chalcogenide glass (specification: D25.4mm*4mm wedge-shaped piece; composed of Ge10As40Se50) is ground with a cast iron grinding disc and emery with a particle size of W7 to remove defects such as knife marks and chipping, and at the same time ensure the chalcogenide glass. The thickness meets the requirements of the grinding step;

[0049] (2) rough polishing the chalcogenide glass obtained in step (1) with a polyurethane mold and alumina polishing powder with a particle size of W2.0, and the pressure is 1kgf / cm 2 , the spindle speed is 95RPM, the swing shaft speed is 55RPM, and the duration is 2h to remove trachoma;

[0050] (3) The first fine polishing of the chalcogenide glass obtained in step (2) is carried out using an asphalt mold and alumina polishing powder with a particle size of W...

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Abstract

The invention provides a method for processing chalcogenide glass, which belongs to the field of infrared optics. In the present invention, the chalcogenide glass is ground, coarsely polished, finely polished with an asphalt mold and finely polished with a damping cloth. The soft hardness matches the hardness of the chalcogenide glass, which can solve the scraping problem caused by the too soft or too hard asphalt mold, greatly avoid scratches on the surface of the product, and improve the surface accuracy and stability of the product; damping cloth is used for Fine polishing can improve the surface accuracy of the product. The use of ammonium dichromate solution in the fine polishing process can avoid whitening of the surface of the chalcogenide glass or remove the white fog on the surface of the chalcogenide glass, and improve the surface quality of the chalcogenide glass. In addition, the present invention has simple steps, fewer types of chemicals, and is safer.

Description

technical field [0001] The invention belongs to the field of infrared optics, and particularly relates to a method for processing chalcogenide glass. Background technique [0002] Chalcogenide glass has the advantages of high transmittance, high chemical stability, simple preparation and easy molding, so it is a popular infrared material with excellent performance. At present, the cold working method is mostly used to process the chalcogenide glass. For example, the current process of processing chalcogenide glass using the classical polishing method is to first grind the chalcogenide glass, use 280# sand and a steel disc to roughly grind the surface shape, and then use the silicon carbide grinding fluid with the particle size W28 and W10 and the steel disc respectively. Two fine grinding, in which the second fine grinding needs to add NaOH solution with PH value = 9 as polishing liquid to trim the surface shape to reduce the surface roughness; then use the alumina polishin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B37/00B24B7/24C09G1/02
CPCB24B37/00B24B7/241C09G1/02Y02P40/57
Inventor 尹士平黄跃华王艺娜张玉红
Owner 安徽中飞科技有限公司
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