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High aluminum strengthened cover glass composition and manufacturing technology thereof

A technology of glass composition and cover glass, which is applied in glass manufacturing equipment, manufacturing tools, glass tempering, etc., to achieve the effects of improving quality, prolonging service life, and increasing surface compressive stress

Inactive Publication Date: 2015-07-29
SICHUAN XUHONG OPTOELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Although the exchange speed is slower than the high-temperature type, it has practical value because the glass does not deform during tempering

Method used

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Embodiment

[0025] A high-alumina strengthened cover glass composition of the present invention and its manufacturing process are formulated according to the component ratios in Table 1, different components are obtained for testing, and a batching system is used to complete raw material weighing, iron removal, Mixing, conveying and other processes provide high-quality and qualified batch materials for the furnace. Various powder materials are accurately weighed by "decrement method" and "increment method" electronic scales according to the proportion, and the raw materials are layered after weighing. Discharged on the weighing belt conveyor in an orderly manner, and transported into the mixer by the weighing belt conveyor for mixing. The mixed raw materials are put into a high-temperature kiln for melting to form a glass liquid, and the glass is formed by the tin bath float method.

[0026] Table 1: 12 kinds of components of this embodiment and the composition of 6 kinds of existing glas...

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Abstract

The invention discloses a high aluminum strengthened cover glass composition which includes the following components in percentage by mole: SiO2: 49-75%, Al2O3: 1-25%, Na2O: 5-18%, K2O: 0-16%, MgO: 2-16%, CaO: 0-6%, BaO: 0-1%, SrO: 0-3%, ZrO2: 0-5%. According to the modified high aluminum strengthened cover glass provided by the invention, the surface pressure stress is at least 700 MPa, the thickness of the pressure stress layer is 36 micrometers or above, and a ring-on-ring (ROR) pressure resistant value of 500 MPa or above is obtained; compared with the strengthened cover glass in the prior art, the high aluminum strengthened cover glass provided by the invention has the advantages that the surface pressure stress is greatly improved, and the ROR pressure resistant value is increased from 2500 MPa to 5000 MPa, so that the quality of the glass is greatly improved, and the service life of the glass is prolonged.

Description

technical field [0001] The invention relates to the technical field of electronic flat glass manufacturing and processing, in particular to a high-alumina strengthened cover glass composition and a manufacturing process thereof. Background technique [0002] Since entering the era of touch intelligence, the demand for protective glass for display devices used in mobile terminal human-computer interaction devices such as mobile phones, tablets, and touch notebooks has increased day by day. As people rely on touch technology, whether the screen is easy to break has gradually become an important indicator to measure the quality of electronic products. Ordinary soda-lime glass is used as the protective glass for the display screen. Due to its low surface strength, it is prone to scratches, cracks, blurred display, and broken screens after long-term use. High-alumina reinforced cover glass has gradually become the mainstream of cover glass due to its high light transmittance and...

Claims

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Application Information

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IPC IPC(8): C03C3/085C03C3/087C03B18/02C03B27/03
Inventor 宫汝华展贵鑫沈子涵胡正宜
Owner SICHUAN XUHONG OPTOELECTRONICS TECH
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