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Pretreatment method before glass strengthening treatment and glass strengthening treatment method comprising same

A technology of glass strengthening and processing method, which can be used in glass tempering, glass manufacturing equipment, manufacturing tools, etc., and can solve problems such as unevenness

Active Publication Date: 2021-11-05
LENS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The first object of the present invention is to provide a pretreatment method before glass strengthening treatment, and the pretreatment method overcomes the glass once again under the premise of not affecting the comprehensive effect of the product with better DOL value and CS value. Defects such as watermarks and unevenness after strengthening enable glass products to have better bending and scratch resistance while effectively improving product appearance quality

Method used

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  • Pretreatment method before glass strengthening treatment and glass strengthening treatment method comprising same
  • Pretreatment method before glass strengthening treatment and glass strengthening treatment method comprising same
  • Pretreatment method before glass strengthening treatment and glass strengthening treatment method comprising same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0106] A glass tempering treatment, said glass tempering treatment comprising the steps of:

[0107] (A), a preheating: preheating the glass to be processed of 80min at 350 deg.] C;

[0108] (B), rinsing: Using potassium sodium salts of mixed glass furnace water after step (a) warm-rinsed once 3min;

[0109] Potassium sodium mixed salt of the boiler water temperature of 395 ℃, the content of potassium sodium mixed salt of sodium nitrate in water furnace 50wt%, the content of potassium nitrate is 50wt%;

[0110] (C), the first ion exchange: the glass was first rinsed in a mixed molten salt in an ion exchange 420 ℃ for 2.5 h;

[0111] Mixing the first mixed molten salt of sodium nitrate and potassium nitrate molten salt, the molten salt of sodium nitrate and mixed in an amount of 50wt%;

[0112] (d), multi-groove water: Soak the glass after the primary ion exchange process in turn, in the water of the first slot to the fifth slot, wherein:

[0113] The first groove is immersed in pu...

Embodiment 2

[0123] A glass tempering treatment, said glass tempering treatment comprising the steps of:

[0124] (A), in Example 1;

[0125] (B), rinsing: Using potassium sodium salts of mixed glass furnace water after step (a) warm-rinsed once 3min;

[0126] Potassium sodium mixed salt of the boiler water temperature of 380 ℃, the content of potassium sodium mixed salt of sodium nitrate in water furnace 38wt%, the content of potassium nitrate is 62wt%;

[0127] (C), ~ (g), the same as in Example 1.

Embodiment 3

[0129] A glass tempering treatment, said glass tempering treatment comprising the steps of:

[0130] (A), in Example 1;

[0131] (B), rinsing: Using potassium sodium salts of mixed glass furnace water after step (a) warm-rinsed once 5min;

[0132] Potassium sodium mixed salt of the boiler water temperature of 400 ℃, the content of potassium sodium mixed salt of sodium nitrate in water furnace 50wt%;

[0133] (C), ~ (g), the same as in Example 1.

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Abstract

The invention provides a pretreatment method before glass strengthening treatment and a glass strengthening treatment method comprising the pretreatment method, and relates to the technical field of glass strengthening. The pretreatment method before glass strengthening treatment comprises the following steps: firstly, providing glass to be treated, and then sequentially preheating and rinsing the glass to obtain pretreated glass; wherein the rinsing furnace water for rinsing is potassium-sodium mixed salt furnace water, and the content of sodium nitrate in the potassium-sodium mixed salt furnace water is 38-50 wt%. According to the pretreatment method, the dirt on the surface of the product before strengthening is cleaned and oxidized by utilizing the characteristics of high temperature and strong oxidation of the potassium-sodium mixed salt furnace water, and the residual molten salt on the surface of the product after rinsing and before strengthening is deposited on the surface, so that the surface cleanliness of the glass before entering the furnace is ensured. Therefore, the pretreatment method before glass strengthening treatment overcomes the defects of watermarks, unevenness and the like of the glass after primary reinforcement on the premise of not influencing the comprehensive effect of better DOL value and CS value of the product.

Description

Technical field [0001] The present invention relates to the field of glass strengthening treatment, in particular, to a pretreatment method before glass reinforcing treatment and a glass reinforcing treatment method comprising therethrough. Background technique [0002] Chemical strengthening glass products are widely used in electronic fields such as mobile phones, watches, computers, and touch panels due to their characteristics of good light transmittance, touch and feel. As the reinforcing glass of the reinforced glass is constantly improving, the reinforcing process of glass is gradually complex. At present, the glass processing industry generally needs to strengthen the glass products with high DOL values ​​(depth oflayers: stress layer depth values) and high CS values ​​(Compressive Stress: surface tensile stress), and once a strengthening is generally unable to meet these two values. Therefore, the user's demand for product performance cannot be met. In order to further i...

Claims

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Application Information

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IPC IPC(8): C03B27/03C03C21/00C03C23/00
CPCC03B27/03C03C21/002C03C23/007C03C23/0095C03C23/0075Y02P40/57
Inventor 肖泽辉
Owner LENS TECH
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