Glass suitable for chemically tempering and chemical tempered glass

A chemical tempering glass and chemical tempering technology, applied in glass production, glass tempering, glass manufacturing equipment and other directions, can solve the problems of difficult manufacturing process, difficult to eliminate bubbles, increase glass viscosity, etc. The effect of reducing the production temperature and improving the yield

Active Publication Date: 2009-08-19
CDGM OPTICAL GLASS
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AI Technical Summary

Benefits of technology

This technology reduces difficulties during production by reducing factors like high-temperature processing steps or improving coolability for certain materials used while still maintaining their desired properties such as clarity, transparency, durable appearance, etc., resulting in improved quality products with lower costs compared to traditional methods that require longer periods before reaching full melted state.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the quality control of glass products made at very specific stages of their life cycle. Specifically, there may exist defects such as cracks caused by excessively strong internal pressure applied over an extended period without being able to recover them properly once they have been formed. These weakened areas lead to increased risk of failure upon breakage under external forces like impact loads. Chemical temperatures called hotter treatments were developed to address this issue. However, current methods require long periods before achieving desired results.

Method used

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  • Glass suitable for chemically tempering and chemical tempered glass

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Embodiment Construction

[0024] Components that may be contained in the glass of the present invention will be described below, and the content of each component is expressed in % by weight.

[0025] SiO 2 It is the main component to form the glass skeleton. The higher its content, the more it can improve the chemical durability and the mechanical strength of the glass. When the content is below 55%, the chemical stability of the glass is not good, but when the content exceeds 61.5%, the melting temperature is too high. high. Therefore, SiO 2 The content is 55-61.5%.

[0026] Al 2 o 3 In the glass composition, it provides performance for the ion exchange of the glass surface, and is also a necessary component to improve the chemical stability of the glass, reduce the crystallization tendency of the glass, and improve the hardness and mechanical strength of the glass. If Al 2 o 3 When the content is less than 5%, the exchange effect is not good, and the chemical stability of the glass is not good; w

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Abstract

The invention provides easily founded lithia-alumina-silica glass suitable for a low temperature type ion exchange process and chemical toughening. The lithia-alumina-silica glass comprises the following components in percentage by weight: 55 to 61.5 percent of SiO2, 5 to 13 percent of Al2O3, 13 to 20 percent of Na2O, 3.5 to 8 percent of K2O, 0 to 5 percent of ZnO, 0 to 8 percent of MgO, 0.5 to 5 percent of Li2O, and 0 to 1.5 percent of Sb2O. Through the reasonable setting of the components, the invention reduces the glass manufacturing difficulty, obviously decreases the glass founding temperature, and facilitates the energy consumption reduction and finished product yield improvement. Under the conditions of the toughening temperature of 380 to 500 DEG C and the toughening time of 4 to 12 hours, the surface bearing stress of the obtained glass reaches 340 to 700 MPa, the depth of the stressed layer reaches 20 to 60mu m, and the glass is reinforced and has high shock resistance.

Description

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Claims

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Application Information

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Owner CDGM OPTICAL GLASS
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