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Methods of cutting and chamfering tempered glass

A technology of tempering glass and chamfering, applied in glass cutting devices, glass manufacturing equipment, book binding, etc., can solve the problems of prolonged processing time and increased cost, and achieve the effect of improved strength, low cost, and high strength

Active Publication Date: 2019-04-26
DONGWOO FINE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method using the cup wheel is a mechanical chamfering method, and requires repeated processes for the desired flat state, which results in prolonged processing time and increased cost

Method used

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  • Methods of cutting and chamfering tempered glass
  • Methods of cutting and chamfering tempered glass
  • Methods of cutting and chamfering tempered glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0039] The present invention provides a method for cutting strengthened glass, the method comprising: adding water (H 2 O) spraying at a spraying pressure of 100 to 800 bar together with cutting particles having a mesh size of 120 to 600 to cut the strengthened glass at a cutting speed of 1500 mm / min or less.

[0040] The water jet method is a method that has been widely used to cut conventional glass rather than strengthened glass, and is considered to be an economical and precise method of cutting glass.

[0041] However, there is no precedent for applying the water jet method to toughened glass that is difficult to cut. In consideration of such circumstances, the present inventors discovered specific conditions of the water jet method capable of cutting strengthened glass, and completed the method of the present invention, which can economically and accurately cut strengthened glass.

[0042] The tempered glass to which the cutting method of the present invention can be ap...

Embodiment 1 to 10 and comparative example 1 to 11

[0086] In tempered glass (depth of strengthened layer: 20 to 25μm, Vickers hardness: 649kgf / mm 2 , Young's modulus: 71.5 GPa) After forming a protective resin film on the surface, the strengthened glass was cut by spraying a water jet under the conditions shown in Table 1 below. Then, it was observed whether the strengthened glass was cut, and the results are shown in Table 1 below.

[0087] [Table 1]

[0088]

[0089]

[0090] Referring to Table 1, in Examples 1 to 10 in which the injection pressure and cutting speed are within the range of the present invention, the strengthened glass can be cut, but in Comparative Examples 1 to 11 outside the preferred range of the present invention, the Strengthened glass cannot be cut or broken during cutting.

Embodiment 11 to 16 and comparative example 12 to 15

[0092] In tempered glass (depth of strengthened layer: 20 to 25μm, Vickers hardness: 649kgf / mm 2 , Young's modulus: 71.5 GPa) After forming a protective resin film on the surface, the strengthened glass was cut by spraying a water jet under the conditions shown in Table 2 below. Then, a chamfering process was performed by bringing a heat source into contact with the cut plane under the conditions shown in Table 2 below, and it was observed whether the strengthened glass was cut and elongation was measured. The observed and measured results are shown in Table 2 below. Here, the elongation is determined by an average value of 50 or more tempered glasses.

[0093] Elongation is an index capable of evaluating the strength of the strengthened glass, and is measured by arranging two separate support arches on opposite sides of the center below the window substrate of the strengthened glass, and passing through the upper center of the window substrate. While applying a load to the ...

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Abstract

The present invention relates to a method for cutting and chamfering tempered glass, and more specifically, to a method for quickly cutting and chamfering tempered glass without causing defects, by spraying water (H2O) at an injection pressure of 100 to 800 bar, together with 120 to 600 mesh cutting particles, and keeping the cutting speed at or below 1500mm / min.

Description

technical field [0001] The present invention relates to a method of cutting and chamfering strengthened glass, and more particularly, to a method of cutting strengthened glass for touch screen panels without damaging it while having high strength, and cutting of strengthened glass cut by the above-mentioned strengthened glass cutting method Chamfer method for planes. Background technique [0002] Glass products are treated as integral components in a wide range of technologies and industries such as video and optical equipment such as monitors, cameras, VTRs, mobile phones, etc., transportation equipment such as automobiles, various utensils, building installations, etc. Therefore, currently, glasses having various properties are produced and used according to the characteristics of each industrial field. [0003] Among these, touch screens have most strongly attracted public attention as key components of video equipment. A touch screen is a combination of a display and a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B33/02B42C5/02
CPCB24C1/045
Inventor 李汉培孙同镇李东宪朴大出
Owner DONGWOO FINE CHEM CO LTD
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