Glass lens processing method and mixed acid for processing glass lens

A technology of glass lenses and processing methods, applied in glass tempering, glass manufacturing equipment, manufacturing tools, etc., can solve the problems of self-explosion and difficulty in finding glass products

Inactive Publication Date: 2014-09-03
LENS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, due to the existence of V-shaped micro-cracks, glass products may even have the risk of self-explosion after strengthening
[0004] The acid treatment process has only limited application in the glass processing industry, because it is difficult to find an optimal process, which can effectively prevent scratches and corrosion water marks left on the position of the product contacting the fixture

Method used

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  • Glass lens processing method and mixed acid for processing glass lens
  • Glass lens processing method and mixed acid for processing glass lens
  • Glass lens processing method and mixed acid for processing glass lens

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Embodiment Construction

[0020] Such as figure 1 , figure 2 , image 3 As shown, the Corning 2317 glass produced by Corning Corporation is used as the object, and the embodiment of the present invention is further described in combination with the processing of the glass screen of the mobile phone.

[0021] The following process steps are adopted:

[0022] Coarse grinding: adopt 16B single-sided copper disc machine produced by Chuangji Company, the particle size of polishing powder is less than 1um, the grinding unit surface pressure is 50-60Kg / cm2, the grinding speed is 20 rpm / Min, and the temperature during grinding is controlled at 25±5°C. Single side removal 0.04mm;

[0023] Fine polishing: use the 16B grinding machine produced by Hongda Company, the skin grinding is white skin grinding produced by 3M Company, the grinding skin is grooved (groove depth 2mm, groove spacing 50mm×50mm), the particle size of the grinding powder is 1.2um, and the grinding The unit surface pressure is 20-30Kg / cm2, ...

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Abstract

The invention discloses a glass lens processing method which sequentially comprises the steps of coarse grinding, elaborate polishing, reinforcing, acid treatment and after-polishing, wherein in coarse grinding, a copper disc or tin disc jumping within 0.1mm is adopted for coarse grinding; in elaborate polishing, a polishing solution with a polishing powder diameter below 1 micron is adopted for polishing the product; in reinforcing, analytically-pure fused potassium nitrate is adopted for chemically reinforcing the product; in acid treatment, the lens is soaked in mixed acid of hydrofluoric acid, sulfuric acid and water at a ratio of 1:1:50 for 2.5-3.5 minutes at 34-37 DEG C while the solution is oscillated and circulated; in after-polishing, a polishing solution with a polishing powder diameter below 0.8 micron is adopted for polishing the product. In the method, SiO2 in the glass reacts with acid, thus the stress concentration is reduced or eliminated, the glass strength is enhanced, the scratch rate of the glass is reduced, and the light transmission and appearance beauty are improved.

Description

technical field [0001] The method relates to the processing field of glass lenses, in particular to a glass lens processing method and a mixed acid for processing glass lenses. Background technique [0002] With the continuous upgrading of mobile phones, MP3, MP4 and other electronic products, the products tend to be thinner and lighter. At the same time, the requirements for the strength and light transmittance of glass products used for windows are also getting higher and higher. In order to make thinner glass have greater impact resistance, extrusion resistance, and high light transmission capabilities, more and more glass lens polishing, grinding, and strengthening processes have emerged. [0003] During the cold working process of all glass, more or less, deep or shallow micro-cracks will be formed. These V-shaped micro-cracks are sharp and easy to break along the cracks under certain extrusion and impact forces. At the same time, due to the existence of V-shaped micro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B27/03C03C15/00
Inventor 周群飞饶桥兵赵军华
Owner LENS TECH
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