Device for testing actual state of cover plate glass after internal tensile stress fragmentation and using method thereof
A cover glass, the actual state of the technology, applied in the measurement device, the use of a stable tension/pressure test material strength, instruments and other directions, can solve the problem of no observation glass and so on
Inactive Publication Date: 2021-07-16
CAIHONG GRP SHAOYANG SPECIAL GLASS CO LTD
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Problems solved by technology
At present, there is no device to observe the actual state corresponding to the broken glass with different CT values
Method used
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[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. the embodiment. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0029] like figure 1 As shown, as a specific embodiment of the present invention, the actual state test device after the internal tensile stress of the cover glass is broken includes a sample placement table 1, and a number of concentric circular marking lines 2 are arranged on the upper end surface of the sample placement table 1. The diameter of the innermost circle of the circula...
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Abstract
The invention discloses a device for testing the actual state of cover plate glass after internal tensile stress fragmentation and a using method thereof, wherein the device comprises a sample placing table, the upper end face of the sample placing table is provided with a plurality of concentric circle marking lines, a loading device is arranged above the sample placing table, and the lower part of the loading device is connected with a pressing rod; one end, far away from the loading device, of the pressing rod is connected with a pressing head, the axis of the pressing head coincides with the axis of the pressing rod, and the axis of the pressing head is perpendicular to the sample placing table and penetrates through the circle center of the concentric circle marking line. The specific state of glass after breaking and the number of fragments can be observed, so the specific relation between the size of the tensile stress digital value in the glass and the actual fracture number can be visually reflected.
Description
technical field [0001] The invention belongs to the technical field of cover glass processing, and in particular relates to an actual state test device and a use method after the internal tensile stress of the cover glass is broken. Background technique [0002] High-end cover glass substrates for touch display protection are typically made of aluminosilicate glass. This kind of cover glass usually needs to be chemically toughened before it can be installed on mobile terminals such as mobile phones, tablet computers, and vehicle displays for use. Chemical toughening actually uses potassium ions in the chemical liquid to exchange with sodium ions inside the glass. Since the potassium ion radius is larger than the sodium ion radius, a stress layer will be formed on the glass surface after exchange, resulting in three control values, namely CS (surface compressive stress - unit Mpa), DOL (actual ion exchange depth - unit μm ) and CT (internal tensile stress - unit Mpa), the la...
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IPC IPC(8): G01N3/12G01N3/06G01N3/04
CPCG01N3/12G01N3/04G01N3/06G01N2203/0019G01N2203/0044G01N2203/0067
Inventor 闵博文仵小曦刘仲军
Owner CAIHONG GRP SHAOYANG SPECIAL GLASS CO LTD