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Mould core of moulded glass and method for removing protective layer of the mould core

A technology of protective layer and intermediate layer, applied in glass forming, glass pressing, glass manufacturing equipment, etc., can solve the problems of high plating cost and time-consuming processing, and achieve the effect of convenience, fast cost and long life.

Inactive Publication Date: 2010-11-03
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the thickness of the cutting layer reaches 15 μm in this method, the processing is time-consuming and the plating cost is high.

Method used

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  • Mould core of moulded glass and method for removing protective layer of the mould core
  • Mould core of moulded glass and method for removing protective layer of the mould core

Examples

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Comparison scheme
Effect test

example 1

[0026] Using tungsten carbide material as the substrate of the mold core, the surface of the substrate is ground and polished, and a silicon layer and an iridium-rhenium alloy layer are sequentially formed on the substrate to form the mold core. Then, under the control of nitrogen atmosphere, using L-BSL7 as the test glass, at a temperature of 580°C, the surface roughness of the glass molded by the test mold core changes with the change of the molding time. The results show that the glass surface roughness is less than 10nm within 315 hours of pressing time, which meets the requirements of molded glass surface roughness specifications. Moreover, the number of times of moulding is more than 14,000 times when the time of each compression moulding is 80 seconds.

example 2

[0028] Provide a mold core substrate with an average surface roughness Ra = 0.0045 μm and Rt = 0.0472 μm. Then, the film layer, the intermediate layer and the protective layer are sputtered sequentially on the substrate to form the mold core. Then, use 1:4 hydrofluoric acid (HF) and sulfuric acid (H 2 SO 4 ) Soak the mold with the mixture. After the film-removing layer, intermediate layer and protective layer on the mold core substrate are completely removed, the surface roughness of the mold core substrate is measured, and the measured average surface roughness of the mold core substrate Ra = 0.0045 μm, Rt = 0.0888 μm. This result shows that removing the film-removing layer, intermediate layer and protective layer with a mixture of hydrofluoric acid and sulfuric acid will not damage the surface roughness of the mold core substrate, and the surface accuracy still meets the specifications. Therefore, this method can be used to remove the protective layer of precious metals and...

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Abstract

The invention discloses a mould core of moulding glass, which contains substrate, wherein a layer of protective layer and a layer of striping layer are set on the substrate; the striping layer lies between substrate and protective layer; when the protective layer in the mould core is damaged, the stripping layer is etched to remove damaged protective layer.

Description

Technical field [0001] The present invention relates to a mold core and a method for removing the protective layer of the mold core, and in particular to a mold core for molding glass and a method for removing the protective layer of the mold core. Background technique [0002] In recent years, the market for optical products such as digital cameras has developed rapidly, and customers' requirements for image quality have gradually increased. More than 3 million pixels is a necessary demand, and it is expected that the requirements for pixels of mobile phone cameras will also increase to more than one million pixels. Generally, the optical lens shot by plastic cannot achieve the required image quality, and glass lens must be used. However, due to the development trend of products becoming lighter, thinner and shorter, the size requirements for the lenses are relatively small. For small aspheric glass lenses, it is not only difficult and slow to manufacture by polishing and grind...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B11/00C23F1/00
Inventor 陈勇星朱正炜林浪津姚宝顺李维中施铭洲魏朝沧
Owner IND TECH RES INST