CN113683304B - Scratch-resistant glass and testing device thereof - Google Patents
Scratch-resistant glass and testing device thereof Download PDFInfo
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- CN113683304B CN113683304B CN202111016998.0A CN202111016998A CN113683304B CN 113683304 B CN113683304 B CN 113683304B CN 202111016998 A CN202111016998 A CN 202111016998A CN 113683304 B CN113683304 B CN 113683304B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/097—Glass compositions containing silica with 40% to 90% silica, by weight containing phosphorus, niobium or tantalum
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
- C03C21/001—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions
- C03C21/002—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions to perform ion-exchange between alkali ions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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Abstract
The application discloses a method for preparing scratch-resistant glass, which comprises the following steps: step one: preparing a glass matrix, wherein the glass matrix comprises the following components in percentage by mass: siO (SiO) 2 ：58‑63％，Al 2 O 3 ：16‑21％，Na 2 O≤10％，K 2 O≤2％，B 2 O 3 ≤2％，ZnO≤1％，Li 2 O：2‑6％，P 2 O 5 Less than or equal to 2 percent; step two: the scratch-resistant glass is obtained after the glass matrix is subjected to chemical strengthening treatment. The application discloses a scratch-resistant glass and a device for testing the scratch-resistant performance of the scratch-resistant glass. According to the scratch-resistant glass and the preparation method thereof, the glass substrate with specific components is selected, the glass with excellent scratch resistance is obtained by adopting a secondary chemical strengthening treatment mode, the speed of the base carrying platform of the scratch-resistant glass testing device moving back and forth along the longitudinal direction is adjustable, the speed of the glass placing platform moving back and forth along the transverse direction is adjustable, and the detection pressure of the pressurizing device is adjustable.
Description
Technical Field
The application relates to glass production and detection technology, in particular to scratch-resistant glass and a testing device thereof.
Background
Glass is the most mainstream appearance material of smart mobile phone or on-vehicle display screen, along with the continuous advance of glass performance for these years, when glass has beaten numerous materials such as plastics, metal, pottery, sapphire down, plays important role in smart mobile phone, on-vehicle display field. The development of smart phones and vehicle-mounted display screens for decades has witnessed innovation and upgrading of glass processing technology. The continuous upgrading of materials and processes is driven by consumer demands, and the smart phone screen or the vehicle-mounted display screen not only brings the defects of appearance after being ground or scratched, but also has high maintenance cost. Therefore, most consumers can attach a protective film after buying to prevent the mobile phone screen from being scratched or ground, the scratch resistance is a larger consideration factor for purchasing the mobile phone according to the research data of the consumers, and more willing to pay for improving the scratch resistance, and along with the expansion of the surface glass coverage of the smart phone screen and the improvement of the attractive appearance, the scratch resistance of the glass is more required.
The scratch-resistant glass has larger market demand, the quality requirement is higher, and the scratch-resistant performance of the glass is also more stringent. Scratch-resistant glass is required to be subjected to scratch-resistant performance test before leaving factories so as to ensure that the product quality meets the use requirement of the product quality.
Therefore, it is increasingly important to prepare a scratch-resistant glass, and to improve the detection quality and efficiency of the scratch-resistant glass, so as to conveniently and rapidly observe the scratch-resistant result.
Disclosure of Invention
In order to solve the technical problems, the embodiment of the application provides scratch-resistant glass, a preparation method thereof and a device for testing the scratch resistance of the scratch-resistant glass.
The embodiment of the application discloses a method for preparing scratch-resistant glass, which comprises the following steps:
step one: preparing a glass matrix, wherein the glass matrix comprises the following components in percentage by mass: siO2:58-63%, al 2 O 3 ：16-21％，Na 2 O≤10％，K 2 O≤2％，B 2 O 3 ≤2％，ZnO≤1％，Li 2 O：2-6％，P 2 O 5 ≤2％；
Step two: the scratch-resistant glass is obtained after the glass matrix is subjected to chemical strengthening treatment.
In the second step, the glass substrate is heated and then soaked in a salt solution.
Further, subjecting the glass substrate to a chemical strengthening treatment includes:
first chemical strengthening treatment: heating at 370-460 deg.c for 2-8 hr to obtain soaking liquid NaNO 3 A solution;
and (3) performing a second chemical strengthening treatment: heating at 370-460 deg.c for 10-100 min to obtain KNO soaking liquid 3 A solution.
The embodiment of the application also discloses scratch-resistant glass, which is prepared by the method for preparing the scratch-resistant glass, wherein the glass matrix of the scratch-resistant glass comprises the following components in percentage by mass: siO (SiO) 2 ：58-63％，Al 2 O 3 ：16-21％，Na 2 O≤10％，K 2 O≤2％，B 2 O 3 ≤2％，ZnO≤1％，Li 2 O：2-6％，P 2 O 5 ≤2％。
Further, the thickness of the scratch-resistant glass is 0.5mm-1mm; the scratch-resistant glass has the reinforcing performance that: the compressive stress formed on the surface of the glass is 500-1050MPa, and the depth of the compressive stress layer is 40-90 mu m.
The embodiment of the application also discloses a device for testing the scratch resistance of the scratch-resistant glass, which comprises:
the glass placing table is fixedly provided with scratch-resistant glass to be detected through a glass fixing piece;
a base stage on which the glass placement stage is placed; the base carrying platform moves back and forth along the longitudinal direction through the longitudinal driving mechanism; the glass placing table moves back and forth on the base carrying table along the transverse direction through a transverse driving mechanism;
a scratch resistant detection structure disposed above the scratch resistant glass, and comprising a pressurizing device and a replaceable detection head; the detection head is arranged on the pressurizing device and can be contacted with the scratch-resistant glass;
when the glass placing table or the scratch-resistant detection structure moves, the scratch-resistant detection structure does not move along with the glass placing table or the scratch-resistant detection structure.
Further, the apparatus further comprises:
a base platform on which the base stage is placed and relative to which the base stage reciprocates along a longitudinal direction;
the support is fixedly arranged on the base platform, and the scratch-resistant detection structure is fixed to the support.
Further, the bracket includes:
the vertical stand column is vertically arranged on the base platform;
an auxiliary support fixed on the vertical column, and extending perpendicular to a height direction of the vertical column; the auxiliary support comprises a first end and a second end extending out of the vertical column;
wherein the scratch-resistant detection structure is fixed on the first end of the auxiliary support, and the extending direction of the scratch-resistant detection structure is perpendicular to the extending direction of the auxiliary support.
Further, the bracket further comprises:
the adjusting piece is arranged on the vertical upright post and extends perpendicular to the height direction of the vertical upright post;
wherein the auxiliary support is disposed between the adjustment member and the base platform; the adjusting piece is positioned right above the second end of the auxiliary supporting piece;
the adjusting piece is further provided with an adjusting bolt, and the bottom of the adjusting bolt contacts the second end of the auxiliary supporting piece;
the bottom of the adjusting bolt pushes the second end of the auxiliary support to incline towards the direction of the base platform by adjusting the relative position of the adjusting bolt and the adjusting piece, so that the first end of the auxiliary support inclines towards the direction away from the base platform;
when the first end of the auxiliary supporting piece inclines towards the direction away from the base platform, the detection head of the scratch-resistant detection structure is not contacted with the scratch-resistant glass.
Further, the apparatus further comprises:
the control console is stably placed on a horizontal plane; the base platform is fixedly arranged on the control console;
the control console is provided with a start-stop button, a transverse speed adjusting button for controlling the transverse driving mechanism, a longitudinal speed adjusting button for controlling the longitudinal driving mechanism and a pressure adjusting button for controlling the pressurizing device;
wherein the transverse speed adjusting knob controls the speed of the reciprocating movement of the glass placing table along the transverse direction by controlling the transverse driving mechanism;
the longitudinal speed adjusting knob controls the speed of the reciprocating movement of the base stage along the longitudinal direction by controlling the longitudinal driving mechanism.
Further, the detection head is mounted on the pressurizing device by a jig.
Further, the detection head is selected from one of a diamond pressing head, a scraping head with rubbing cloth and a diamond cutter wheel tool bit.
Further, the pressurizing device adjusts the pressure through the pressure adjusting button, and the pressure is in the range of 0-50N.
Further, the auxiliary support is mounted on the vertical column by bolts at a position between the first end and the second end.
Further, an adjusting piece is installed at the top end of the vertical column.
Further, a pause button, a transverse speed display screen, a longitudinal speed display screen, a pressure display screen for displaying the pressure of the pressure device, a single-way button and a back-and-forth button are also arranged on the control console.
Further, two glass fixing members are placed on edge positions of both sides of the scratch-resistant glass, respectively, and both end portions of the glass fixing members extend beyond the scratch-resistant glass, both end portions of the glass fixing members are fixed to the glass placing table by bolts, so that the glass fixing members press the scratch-resistant glass to fix the scratch-resistant glass to the glass placing table.
Further, the speed of the glass placing table is adjusted by the transverse speed adjusting button, the speed range is 0-100 mm/s, and the glass placing table is directly displayed by the transverse speed display screen.
Further, the speed of the base carrier is adjusted by the longitudinal speed adjusting button, the speed range is 0-100 mm/s, and the speed is directly displayed by the longitudinal speed display screen.
By adopting the technical scheme, the application has at least the following beneficial effects:
according to the scratch-resistant glass and the preparation method thereof, the glass with excellent scratch resistance is obtained by selecting a glass matrix with specific components and adopting a secondary chemical strengthening treatment mode. The scratch-resistant glass performance is improved by the combination of the thickness of the glass and the depth of a compressive stress layer formed on the surface of the glass. The protection capability of the adversary screen or the vehicle-mounted display screen is better than that of the common soda-lime-silica glass, and the scratch and the grinding of the mobile phone screen or the vehicle-mounted display screen can be effectively prevented.
The device for testing the scratch resistance of the scratch resistant glass disclosed by the application has the following effects:
the scratch-resistant glass testing device is simple in structure and simple and practical to operate.
The speed of the base carrying platform moving back and forth along the longitudinal direction is adjustable, the speed of the glass placing platform moving back and forth along the transverse direction is adjustable, and the detection pressure of the pressurizing device is adjustable.
The detection head can be replaced according to different detection requirements, so that the universality of the equipment is enhanced.
The scratch resistance result of the glass to be detected shows that whether the glass has scratches or not can be observed in real time in the detection process.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an apparatus for testing scratch resistance of a scratch resistant glass in accordance with an embodiment of the present application;
FIG. 2 is a schematic top view of the apparatus for testing scratch resistance of FIG. 1;
FIG. 3 is a partial schematic view of the apparatus for testing scratch resistance of FIG. 1.
[ list of reference numerals ]
Start-stop button 1, pause button 2, longitudinal speed adjusting button 3, transverse speed adjusting button 4, longitudinal speed display 5, transverse speed display 6, vertical column 7, bolt 8, auxiliary support 9, adjusting piece 10, adjusting bolt 11, pressurizing device 12, detecting head 13, diamond pressing head 13-1, rubbing head with rubbing cloth 13-2, diamond cutter wheel bit 13-3, glass 14, glass fixing piece 15, driving motor 16, glass placing table 17, base carrier 18, base platform 19, pressure display 20, pressure adjusting button 21, control table 22, single-way button 23, back-and-forth button 24.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the following embodiments of the present application will be described in further detail with reference to the accompanying drawings.
The designed detection device can automatically and accurately scratch the glass aiming at scratch-resistant glass and test thereof, and the scratch-resistant performance of the glass can be judged through the pressure applied to the scratch and the scratch size. Specifically, on the basis of obtaining flat glass by using a float glass production process, the scratch-resistant glass and the preparation method thereof are provided, and the obtained product has better protection capability on a mobile phone screen or a vehicle-mounted display screen than common soda-lime glass.
In one aspect, the present application provides a method of making a scratch resistant glass comprising the steps of:
step one: preparing a glass matrix, wherein the glass matrix comprises the following components in percentage by mass: siO (SiO) 2 ：58-63％，Al 2 O 3 ：16-21％，Na 2 O≤10％，K 2 O≤2％，B 2 O 3 ≤2％，ZnO≤1％，Li 2 O：2-6％，P 2 O 5 ≤2％；
Step two: the glass matrix is subjected to chemical strengthening treatment to obtain the scratch-resistant glass. The chemical strengthening treatment is to heat the glass matrix and then soak the glass matrix in a salt solution.
The chemical strengthening treatment of the glass substrate comprises:
first chemical strengthening treatment: heating at 370-460 deg.c for 2-8 hr to obtain soaking liquid NaNO 3 A solution;
and (3) performing a second chemical strengthening treatment: heating at 370-460 deg.c for 10-100 min to obtain KNO soaking liquid 3 A solution.
Another aspect of the application provides a scratch-resistant glass prepared by the method, and a glass substrate of the scratch-resistant glassThe components of the (C) are as follows in percentage by mass: siO (SiO) 2 ：58-63％，Al 2 O 3 ：16-21％，Na 2 O≤10％，K 2 O≤2％，B 2 O 3 ≤2％，ZnO≤1％，Li 2 O：2-6％，P 2 O 5 ≤2％。
The scratch-resistant glass can form a layer of compressive stress on the surface through chemical strengthening and has a certain depth.
The strengthening performance of the scratch-resistant glass is as follows: the compressive stress formed on the surface of the glass is 500-1050MPa, preferably 700-1050MPa; the depth of the compressive stress layer is 40 to 90. Mu.m, preferably 60 to 80. Mu.m.
The thickness of the scratch-resistant glass generally used in the art is from 0.5mm to 1mm.
It should be noted that the value of compressive stress and the depth of layer of compressive stress formed on the glass surface of the glass are not the larger the glass, the more scratch resistant the glass is; if the value of the compressive stress formed on the surface of the glass and the depth of the layer of the compressive stress are too large, the central tensile stress of the glass is too low, so that the glass is broken when being subjected to a certain pressure (for example, a scratch test is performed by a detection head).
Therefore, the present embodiment controls the composition of the substrate glass and the conditions of the secondary chemical strengthening treatment so as to control the relationship between the compressive stress value and the depth of layer of compressive stress formed on the surface of the glass, so that the compressive stress value and the depth of layer of compressive stress formed on the surface of the glass are kept within a proper range under the condition that the central tensile stress of the glass is not too low, and the scratch resistance of the glass is optimized.
The base glass comprises the following components in percentage by mass 2 ：58-63％，Al 2 O 3 ：16-21％，Na 2 O≤10％，K 2 O≤2％，B 2 O 3 ≤2％，ZnO≤1％，Li 2 O：2-6％，P 2 O 5 ≤2％。
The action and specific content of each component in the base glass are discussed below:
SiO 2 is a constituent glassThe main component of the framework is a three-dimensional framework of silicon and oxygen in glass. Such as SiO 2 The content is low, the conditions of the glass such as the increase of the thermal expansion coefficient, the deterioration of scratch resistance and the like can occur, and the later chemical strengthening treatment effect can be influenced; such as SiO 2 The content of the glass in the base glass of the present application is 58 to 63wt% in the case where the viscosity is increased and the glass is hardly melted.
Al 2 O 3 The introduction of the glass can reduce the crystallization tendency of the glass and improve the mechanical strength and hardness of the glass; if Al is 2 O 3 The mass fraction of (c) is too low to obtain the desired surface compressive stress S, stress layer thickness t by ion exchange. But if Al 2 O 3 If the mass fraction of (b) is too high, the viscosity of the glass increases, melting or molding of the glass becomes difficult, and the liquid phase temperature increases to easily devitrify, and the content thereof in the base glass of the present application is 16 to 21wt%.
Li 2 O is an essential component for ion exchange to form surface compressive stress and improve glass fragility, and the content of O in the base glass of the application is 2-6wt%.
Na 2 O is an external oxide of a network, is an essential component for ion exchange in a chemical strengthening process, and can improve the meltability of glass. Na (Na) 2 The O content is low, and the required surface compressive stress layer is difficult to form by ion exchange, na 2 When the O content is too high, the thermal properties of the glass are remarkably lowered, the solar weather resistance becomes low, and the content thereof in the base glass of the present application is 10% by weight or less.
K 2 O is an external oxide of a network, so that the ion exchange speed can be improved, the transparency and the luster of the glass are improved, and the melting of the glass is improved. K (K) 2 When the O content is insufficient, the glass meltability and the ion exchange rate are significantly reduced. K (K) 2 The 0 content is too high, the weather resistance is lowered, and the hardening speed is lowered during the glass forming, and the content thereof in the base glass of the present application is 2wt% or less.
B 2 O 3 In some cases, a high content may make it difficult to mold glass in order to improve the meltability at high temperature or the strength of glass, whichThe content in the base glass of the present application is 2wt% or less.
ZnO is a component having an obvious effect of reducing the viscosity of glass and suppressing crystallization, and is highly crystalline and easily crystallized, and the content of ZnO in the base glass of the present application is 1wt% or less.
P 2 O 5 Optional ingredients that help to improve the low temperature meltability of the glass, when present in high amounts, will cause the glass to phase and create an emulsion, which is present in the base glass of the present application at less than 1% by weight.
In another aspect, the present application provides an apparatus for testing the scratch resistance of the above scratch resistant glass, the apparatus being shown in FIGS. 1-3. The arrow direction X shown in fig. 2 to 3 is a longitudinal direction described below, and the arrow direction Y shown in fig. 2 to 3 is a transverse direction described below.
The device for testing the scratch resistance of scratch-resistant glass comprises:
a glass placing table 17, wherein scratch-resistant glass is fixedly placed on the glass placing table 17 through a glass fixing piece 15; wherein the glass matrix of the scratch-resistant glass comprises the following components in percentage by mass: siO (SiO) 2 ：58-63％，Al 2 O 3 ：16-21％，Na 2 O≤10％，K 2 O≤2％，B 2 O 3 ≤2％，ZnO≤1％，Li 2 O：2-6％，P 2 O 5 ≤2％；
A base stage 18, on which the glass placement stage 17 is placed on the base stage 18; the base stage 18 is reciprocally moved in the longitudinal direction by a longitudinal driving mechanism; the glass placing table 17 is reciprocally moved on the base stage 18 in the lateral direction by a lateral driving mechanism;
a scratch-resistant detection structure disposed above the scratch-resistant glass, and comprising a pressurizing device 12 and a replaceable detection head 13; the detection head 13 is provided on the pressurizing device 12 and can be in contact with the scratch-resistant glass;
wherein, when the glass placing table 17 or the scratch-resistant detecting structure moves, the scratch-resistant detecting structure does not move along with the glass placing table 17 or the scratch-resistant detecting structure.
A base platform 19, the base stage 18 being placed on the base platform 19 and the base stage 18 being reciprocally movable in the longitudinal direction with respect to the base platform 19;
a bracket fixedly arranged on the base platform 19 and to which the scratch resistant detection structure is fixed.
A console 22, the console 22 being stably placed on a horizontal plane; the base platform 19 is fixedly placed on the console 22;
a start-stop button 1, a transverse speed adjusting button 4 for controlling a transverse driving mechanism, a longitudinal speed adjusting button 3 for controlling a longitudinal driving mechanism and a pressure adjusting button 21 for controlling a pressurizing device 12 are arranged on the console 22;
wherein the lateral speed adjusting knob 4 controls the rate of reciprocal movement of the glass placing table 17 in the lateral direction by controlling the lateral driving mechanism;
the longitudinal speed adjusting knob 3 controls the rate of reciprocation of the base stage 18 in the longitudinal direction by controlling the longitudinal driving mechanism.
The support includes:
the vertical upright post 7 is vertically arranged on the base platform 19;
an auxiliary support 9, the auxiliary support 9 being fixed on the vertical column 7, and the auxiliary support 9 extending perpendicular to the height direction of the vertical column 7; the auxiliary support 9 comprises a first end and a second end extending out of the vertical column 7;
wherein the scratch resistant detection structure is fixed on the first end of the auxiliary support 9 and the extending direction of the scratch resistant detection structure is perpendicular to the extending direction of the auxiliary support 9.
The adjusting piece 10, the adjusting piece 10 is set up on the vertical column 7, and the adjusting piece 10 extends perpendicular to the height direction of the vertical column 7;
wherein the auxiliary support 9 is arranged between the adjustment member 10 and the base platform 19; the adjusting member 10 is located directly above the second end of the auxiliary support member 9;
the adjusting member 10 is further provided with an adjusting bolt 11, the bottom of the adjusting bolt 11 contacting the second end of the auxiliary support member 9;
wherein, the second end of the auxiliary supporting piece 9 is pushed to incline towards the direction of the base platform 19 by adjusting the relative position of the adjusting bolt 11 and the adjusting piece 10 so that the first end of the auxiliary supporting piece 9 inclines towards the direction away from the base platform 19;
when the first end of the auxiliary support 9 is tilted away from the base platform 19, the detection head 13 of the scratch-resistant detection structure is not in contact with the scratch-resistant glass.
Preferably, the detection head 13 is mounted on the pressurizing device 12 by a jig.
Preferably, the detecting head 13 is selected from one of a diamond indenter 13-1, a scraping head 13-2 with rubbing cloth, and a glass cutter head 13-3 of a diamond cutter wheel.
Preferably, the pressurizing means 12 adjusts the pressure by the pressure adjusting knob 21 in the range of 0 to 50N.
Preferably, the auxiliary support 9 is mounted on the vertical column 7 by means of bolts 8 at a position between the first and second ends.
Preferably, the top end of the vertical column 7 is fitted with an adjuster 10.
Preferably, the console 22 is also provided with a pause button 2, a lateral speed display 6, a longitudinal speed display 5, a pressure display 20 for displaying the pressure of the pressure device, a one-way button 23, and a shuttle button 24.
Pause button 2 can pause the test procedure; the lateral speed display screen 6 displays the lateral movement speed of the glass placing table 17 at this time; the longitudinal speed display 5 displays the longitudinal movement speed of the base stage 18 at this time; the single pass button 23 controls the detection head 13 to move only once in, for example, the longitudinal direction without returning; the shuttle button 24 is for example shuttle once in the longitudinal direction.
Preferably, two glass fixing pieces 15 are placed on edge positions of both sides of the scratch-resistant glass, respectively, and both end portions of the glass fixing pieces 15 extend beyond the scratch-resistant glass, and both end portions of the glass fixing pieces 15 are fixed to the glass placing table 17 by bolts, so that the glass fixing pieces 15 press the scratch-resistant glass to fix the scratch-resistant glass to the glass placing table 17.
Preferably, the glass placing table 17 adjusts the speed by the transverse speed adjusting button 4, the speed range is 0-100 mm/s, and the speed range is directly displayed by the transverse speed display screen 6.
Preferably, the speed of the base carrier 18 is adjusted by the longitudinal speed adjusting button 3, the speed range is 0-100 mm/s, and the speed range is directly displayed by the longitudinal speed display screen 5.
Preferably, the glass placing table 17 is provided with a driving motor 16 on one side thereof in the moving direction thereof, as shown in fig. 1 and 3. The glass placing table 17 is driven by the driving motor 16 to move along the transverse direction, and a specific driving mode adopts a driving mode which is conventional in the art, for example, a mode of adding a driving screw to a motor capable of rotating positively and negatively; the motor rotates forward to push the glass placing table 17 to advance, and rotates reversely to enable the glass placing table 17 to retreat. More preferably, in order to allow better movement of the glass placing stage 17 on the base stage 18, a rail sliding connection may be formed between the glass placing stage 17 and the base stage 18.
Preferably, one side of the base stage 18 in the direction of movement thereof is provided with another drive motor (not shown). This drive motor is identical to the drive motor 16 in construction and drive principle and will not be described in detail here. More preferably, in order to provide for better movement of the base stage 18 over the base platform 19, a rail sliding connection may be formed between the base stage 18 and the base platform 19.
Optionally, the bracket, the glass fixing member 15, the glass placing table 17, the base carrying table 18 and the base platform 19 are made of hard aluminum alloy materials. The longitudinal speed display 5, the transverse speed display 6 and the pressure display 20 adopt digital display meters. The longitudinal speed adjusting knob 3, the transverse speed adjusting knob 4 and the pressure adjusting knob 21 adopt a knob mode.
In the specific implementation (as shown in fig. 2), the glass 14 to be detected is mounted on the glass placing table 17 through the glass fixing piece 1515, the detection head 13 is selected for detection, and different detection heads can be replaced according to the detection requirement of the detection head 13, and can be selected or customized according to actual requirements.
In example A, the scoring device uses a diamond indenter 13-1, the pressure adjusting knob 21 selects different pressures, one pass of the transverse direction or the longitudinal direction is selected for scraping test, and the longitudinal speed adjusting knob 3 or the transverse speed adjusting knob 4 selects proper speed. Such as: the method comprises the steps of adopting a Rockwell diamond press head of HRC-3 specification, adopting a unidirectional single-pass speed with a cone angle (120+/-0.35) DEG and 5mm/s, and adopting a travel distance of 50mm (which means that the travel distance of a detection head is 50 mm), wherein the interval of each scribing position is not less than 5mm, and increasing the pressure from 0N to the generation of a scribing mark so as to obtain a threshold value for generating a scribing of the glass 14 to be detected.
Example B the scraping tool employs a scraping head 13-2 with a replaceable different friction cloth, the pressure adjusting knob 21 selects the appropriate pressure, the reciprocal movement in both the lateral and longitudinal directions is selected for the scraping test, and the longitudinal speed adjusting knob 3 and the lateral speed adjusting knob 4 select the appropriate speed. Such as: the 0000# steel wool scraping head is adopted, the bidirectional speed of 5mm/s (the travelling speed in the transverse direction and the travelling speed in the longitudinal direction are both 5 mm/s), the stroke of 30mm is reciprocated for 1 circle, the pressure is 1-10N, and the threshold value of friction scratch generated on the surface of the glass 14 is detected. In this example, the path of travel of the scraping head 13-2 is wave-like.
Example C the diamond wheel tool 13-3 used a glass cutter of a diamond wheel, the pressure adjustment knob 21 selected the appropriate pressure, the scraping test was performed in a single pass in either the transverse or longitudinal direction, and the longitudinal speed adjustment knob 3 and the transverse speed adjustment knob 4 selected the appropriate speed. Such as: the cutter wheel notch width of the glass 14 is accurately measured by a microscope by adopting a one-way single-pass speed of 2mm/s, a travel of 50mm and a pressure of 1-10N of the diamond glass cutter head with the SQD-125 degrees.
The application will now be described in further detail with reference to specific examples, which are intended to illustrate, but not to limit the application.
Examples 1-5 are shown in Table 1 below and comparative examples are shown in Table 2.
As described in tables 1 and 2, siO as a glass raw material was selected 2 、A1 2 O 3 、Na 2 O、K 2 O、B 2 O 3 、P 2 O 5 ZnO and Li 2 O was weighed so that the sum of the mass percentages of the glass raw materials was 100% by weight, based on the composition conditions expressed as mass percentages shown in the table.The uniformly mixed raw materials are put into a platinum crucible, melted in a lifting sample melting furnace with the temperature of 1500-1800 ℃ to melt and clarify the raw materials, poured into a mold with the temperature of 150 multiplied by 70 multiplied by 20mm which is preheated to about 500 ℃, then transferred into an annealing furnace, kept at the temperature of about 630 ℃ for 30min, and annealed at the speed of about 2 ℃/min to obtain glass blocks. The glass block was cut and polished under the conditions of a specification of 100X 50X 0.7mm, and finally both surfaces were polished to mirror surfaces to obtain sheet glass. These glasses were then heated to 180-400 ℃ followed by NaNO at 425 ℃ 3 Soaking in salt solution for 5 hours, and performing primary chemical strengthening treatment. And heating the glass to 250-400 ℃ under the secondary strengthening condition, wherein the secondary strengthening temperature and time are respectively 390 ℃/40 minutes.
TABLE 1
TABLE 2
For comparative examples 1-3, in which the glass composition does not meet the requirements of the technical scheme of the application, the scratch resistance test results are obviously poor, and the content of each component in the glass composition meets the requirements of examples 1-5 within the scope of the application, which produce better scratch resistance under the same scoring device conditions as comparative examples 1-3.
It can be seen that, in the case where the content of each component in the glass composition is determined, it falls within the scope of the present application, unexpected technical effects are produced in terms of the compressive stress value of the glass surface, the depth of stress layer, scratch resistance, and the like.
The longitudinal direction and the transverse direction in this embodiment are perpendicular to each other.
It should be noted that, each component or step in each embodiment may be intersected, replaced, added, and deleted, and therefore, the combination formed by these reasonable permutation and combination transformations shall also belong to the protection scope of the present application, and shall not limit the protection scope of the present application to the embodiments.
The foregoing is an exemplary embodiment of the present disclosure, and the order in which the embodiments of the present disclosure are disclosed is merely for the purpose of description and does not represent the advantages or disadvantages of the embodiments. It should be noted that the above discussion of any of the embodiments is merely exemplary and is not intended to suggest that the scope of the disclosure of embodiments of the application (including the claims) is limited to these examples and that various changes and modifications may be made without departing from the scope of the application as defined in the claims. The functions, steps and/or actions of the method claims in accordance with the disclosed embodiments described herein need not be performed in any particular order. Furthermore, although elements of the disclosed embodiments may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.
Those of ordinary skill in the art will appreciate that: the above discussion of any embodiment is merely exemplary and is not intended to imply that the scope of the disclosure of embodiments of the application, including the claims, is limited to such examples; combinations of features of the above embodiments or in different embodiments are also possible within the idea of an embodiment of the application, and there are many other variations of the different aspects of the embodiments of the application as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, equivalent substitutions, improvements, and the like, which are made within the spirit and principles of the embodiments of the application, are included within the scope of the embodiments of the application.
Claims (4)
1. A method of making a scratch resistant glass comprising the steps of:
step one: preparing a glass matrix, wherein the glass matrix comprises the following components in percentage by mass: siO (SiO) 2 ：58-63％，Al 2 O 3 ：16-21％，Na 2 O≤10％，K 2 O≤2％，B 2 O 3 ≤2％，ZnO≤1％，Li 2 O：2-6％，P 2 O 5 ≤2％；
Step two: will beThe scratch-resistant glass is obtained after the glass matrix is subjected to chemical strengthening treatment; wherein the chemically strengthening treatment of the glass substrate comprises: first chemical strengthening treatment: heating at 370-460 deg.c for 2-8 hr to obtain soaking liquid NaNO 3 A solution; and (3) performing a second chemical strengthening treatment: heating at 370-460 deg.c for 10-100 min to obtain KNO soaking liquid 3 A solution;
the strengthening performance of the scratch-resistant glass after the chemical strengthening treatment is as follows: the compressive stress formed on the surface of the glass is 500-1050MPa, and the depth of the compressive stress layer is 40-90 mu m.
2. The method of producing a scratch-resistant glass according to claim 1, wherein in the second step, the chemical strengthening treatment is immersing the glass substrate in a salt solution after heating.
3. A scratch-resistant glass, characterized in that it is produced by the method for producing a scratch-resistant glass according to any one of claims 1 to 2, wherein the glass matrix of the scratch-resistant glass comprises the following components in mass percent: siO (SiO) 2 ：58-63％，Al 2 O 3 ：16-21％，Na 2 O≤10％，K 2 O≤2％，B 2 O 3 ≤2％，ZnO≤1％，Li 2 O：2-6％，P 2 O 5 ≤2％。
4. A scratch resistant glass according to claim 3, wherein the scratch resistant glass has strengthening properties of: the compressive stress formed on the surface of the glass is 500-1050MPa, and the depth of the compressive stress layer is 40-90 mu m.
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