Method of processing chalcogenide glass

A technology of chalcogenide glass and asphalt, 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, improving surface quality, and avoiding the removal of white fog

Active Publication Date: 2021-03-19
安徽中飞科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • 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 comprises the following steps:

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

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

[0036] (3) Use the alumina polishing powder of asphalt mold and particle size W1.0 to carry out first fine polishing to the chalcogenide glass that step (2) obtains, wherein the asphalt of as...

Embodiment 2

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

[0041] (1) Grinding the chalcogenide glass (specification: D103mm*14.85mm spherical surface; composed of As40Se60) with a grinding disc made of cast iron and corundum with a particle size of W10 to remove defects such as knife marks and chipping, while ensuring that the thickness of the chalcogenide glass reaches requirements for the grinding step;

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

[0043] (3) Use the alumina polishing powder of asphalt mold and particle size W1.0 to carry out first fine polishing to the chalcogenide glass that step (2) obtains, w...

Embodiment 3

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

[0048] (1) Grinding the chalcogenide glass (specification: D25.4mm*4mm wedge; composed of Ge10As40Se50) with a grinding disc made of cast iron and corundum with a particle size of W7 to remove defects such as knife marks and chipping, while ensuring the chalcogenide glass The thickness meets the requirements of the grinding step;

[0049] (2) Use a polyurethane mold and alumina polishing powder with a particle size of W2.0 to roughly polish the chalcogenide glass obtained in step (1), with a pressure of 1kgf / cm 2 , the spindle speed is 95RPM, the pendulum shaft speed is 55RPM, and the time is 2h to remove sand holes;

[0050] (3) Use an asphalt mold and alumina polishing powder with a particle size of W1.0 to carry out the first fine polishing of the chalcogenide glass obtained in step (2), wherein the as...

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Abstract

The invention provides a method for processing chalcogenide glass, and belongs to the field of infrared optics. According to the method, the chalcogenide glass is sequentially subjected to grinding, rough polishing, fine polishing by using an asphalt mold and fine polishing by using damping cloth, wherein asphalt in the asphalt mold consists of 55 # asphalt and 64 # asphalt in a mass ratio of (0-1): 16, and the hardness of the asphalt is matched with that of the chalcogenide glass, so that the problem of disc scraping caused by over-softness or over-hardness of the asphalt mold can be solved,product surfaces are greatly prevented from being scratched, and the surface precision and the stability of a product are improved; and the damping cloth is adopted for fine polishing, so that the surface precision of the product can be improved, an ammonium dichromate solution is used in the fine polishing process, the surface of the chalcogenide glass can be prevented from becoming white or white fog on the surface of the chalcogenide glass can be removed, and the surface quality of the chalcogenide glass is improved. In addition, the method is simple in step, few in chemical types and safer.

Description

technical field [0001] The invention belongs to the field of infrared optics, and in particular 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 processing method is mostly used to process the chalcogenide glass. For example, the current process of processing chalcogenide glass by classical polishing method is to grind the chalcogenide glass first, use 280# sand and steel plate to rough-grind the surface, and then use silicon carbide grinding liquid and steel plate with particle size W28 and W10 respectively. Two fine grinding, wherein the second fine grinding needs to add NaOH solution with PH value = 9 as the polishing liquid, and the surface is trimmed to reduce the surface roughness; then the aluminum oxide polishing liquid and t...

Claims

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Application Information

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Patent Type & Authority Applications(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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