CN113683304A - Scratch-resistant glass and testing device thereof - Google Patents
Scratch-resistant glass and testing device thereof Download PDFInfo
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- CN113683304A CN113683304A CN202111016998.0A CN202111016998A CN113683304A CN 113683304 A CN113683304 A CN 113683304A CN 202111016998 A CN202111016998 A CN 202111016998A CN 113683304 A CN113683304 A CN 113683304A
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- glass
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- resistant glass
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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
Abstract
The invention discloses a method for preparing scratch-resistant glass, which comprises the following steps: the method comprises the following steps: preparing a glass matrix, wherein the glass matrix comprises the following components in percentage by mass: SiO22：58‑63％，Al2O3：16‑21％，Na2O≤10，K2O≤2％，B2O3≤2％，ZnO≤1％，Li2O：2‑6％，P2O5Less than or equal to 2 percent; step two: and carrying out chemical strengthening treatment on the glass matrix to obtain the scratch-resistant glass. The invention discloses scratch-resistant glass and a device for testing the scratch resistance of the scratch-resistant glass. The invention discloses scratch-resistant glass and a preparation method thereof, wherein the glass with excellent scratch resistance is obtained by selecting a glass matrix with specific components and adopting a secondary chemical strengthening treatment mode, and a scratch-resistant glass testThe speed of the reciprocating movement of the base carrying platform along the longitudinal direction of the device is adjustable, the speed of the reciprocating movement of the glass placing platform along the transverse direction is adjustable, and the detection pressure of the pressurizing device is adjustable.
Description
Technical Field
The invention relates to a 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 phone or on-vehicle display screen, and along with the continuous advanced of glass performance these years, glass has defeated numerous materials such as plastics, metal, pottery, sapphire, has played the very important role in smart phone, on-vehicle display field now. The development of smart phones and vehicle-mounted display screens for decades also proves the innovation and the upgrade of the glass processing technology. The continuous upgrading of materials and processes is driven by the demands of consumers, and the smart phone screen or the vehicle-mounted display screen not only has the defects of appearance and feel after being frosted or scratched, but also is high in maintenance cost. Therefore, most consumers can stick a layer of protective film after purchasing to prevent the mobile phone screen from being scratched or rubbed, according to the data investigated by the consumers, the scratch resistance is a great consideration factor for purchasing the mobile phone by the consumers, and the consumers are willing to pay for improving the performance, and along with the expansion of the surface glass covering surface of the smart phone screen and the improvement of the aesthetic appearance, higher requirements are provided for the scratch resistance of the glass.
The market demand of the scratch-resistant glass is more and more increased, the quality requirement of the scratch-resistant glass is higher and higher, and the requirement on the scratch resistance of the glass is tighter and tighter. Scratch-resistant glass is required to be subjected to scratch resistance test before leaving a factory so as to ensure that the product quality meets the use requirement of the product quality.
Therefore, the preparation of the scratch-resistant glass, the improvement of the detection quality and efficiency of the scratch-resistant glass and the convenient and fast observation of the scratch-resistant result are increasingly important.
Disclosure of Invention
In order to solve the technical problems, the embodiment of the invention 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 invention discloses a method for preparing scratch-resistant glass, which comprises the following steps:
the method comprises the following steps: preparing a glass matrix, wherein the glass matrix comprises the following components in percentage by mass: SiO 2: 58 to 63 percent of Al2O3：16-21％，Na2O≤10，K2O≤2％，B2O3≤2％，ZnO≤1％，Li2O：2-6％，P2O5≤2％；
Step two: and carrying out chemical strengthening treatment on the glass matrix to obtain the scratch-resistant glass.
Further, in the second step, the chemical strengthening treatment is to heat the glass substrate and then soak the glass substrate in a salt solution.
Further, the chemically strengthening treatment of the glass substrate includes:
first chemical strengthening treatment: heating at 370-460 deg.C for 2-8h, and soaking in NaNO3A solution;
and (3) second chemical strengthening treatment: heating temperatureThe degree is 370-460 ℃, the strengthening time is 10-100 min, and the soak solution is KNO3And (3) solution.
The embodiment of the invention also discloses scratch-resistant glass which is prepared by adopting 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: SiO22：58-63％，Al2O3：16-21％，Na2O≤10，K2O≤2％，B2O3≤2％，ZnO≤1％，Li2O：2-6％，P2O5≤2％。
Further, the thickness of the scratch-resistant glass is 0.5mm-1 mm; the strengthening performance of the scratch-resistant glass 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 μm.
The embodiment of the invention also discloses a device for testing the scratch resistance of the scratch-resistant glass, which comprises:
the glass placing table is fixedly provided with the scratch-resistant glass to be detected through a glass fixing piece;
a base stage on which the glass placing table is placed; the base carrying platform reciprocates along the longitudinal direction through a longitudinal driving mechanism; the glass placing table reciprocates on the base carrying table along the transverse direction through a transverse driving mechanism;
the scratch-resistant detection structure is arranged above the scratch-resistant glass and comprises 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 which reciprocates relative to the base platform 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 upright post is vertically arranged on the base platform;
an auxiliary support fixed to the vertical pillar and extending perpendicular to a height direction of the vertical pillar; the auxiliary support member includes a first end and a second end extending out of the vertical post;
wherein the scratch resistant detection structure is fixed on the first end of the auxiliary support, and an extending direction of the scratch resistant detection structure is perpendicular to an extending direction of the auxiliary support.
Further, the bracket further comprises:
an adjustment member that is provided on the vertical pillar and that extends perpendicular to a height direction of the vertical pillar;
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 also provided with an adjusting bolt, and the bottom of the adjusting bolt is contacted with the second end of the auxiliary supporting piece;
the relative position of the adjusting bolt and the adjusting piece is adjusted to enable the bottom of the adjusting bolt to push the second end of the auxiliary support piece to incline towards the direction of the base platform, so that the first end of the auxiliary support piece inclines away from the base platform;
when the first end of the auxiliary supporting piece inclines towards the direction far away from the base platform, the detection head of the scratch-resistant detection structure is not in contact with the scratch-resistant glass.
Further, the apparatus further comprises:
the console is stably placed on a horizontal plane; the base platform is fixedly placed on the control platform;
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 lateral speed adjusting knob controls a rate of reciprocating movement of the glass placing table in the lateral direction by controlling a lateral driving mechanism;
the longitudinal speed adjusting knob controls the speed of the reciprocating movement of the base carrier along the longitudinal direction by controlling the longitudinal driving mechanism.
Further, the detection head is mounted on the pressing device by a jig.
Further, the detection head is selected from one of a diamond pressure head, a scraping head with friction cloth and a diamond cutter wheel tool bit.
Furthermore, the pressure of the pressurizing device is adjusted through the pressure adjusting button, and the pressure range is 0-50N.
Further, the position between the first end and the second end of the auxiliary support is mounted on the vertical pillar by means of a bolt.
Further, the top end of the vertical upright post is provided with an adjusting piece.
Furthermore, 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 one-way button and a round-trip button are also arranged on the control console.
Further, two glass fixtures are respectively placed at edge positions of both sides of the scratch-resistant glass, and both end portions of the glass fixtures extend beyond the scratch-resistant glass, and both end portions of the glass fixtures are fixed to the glass placing table by bolts, so that the glass fixtures press the scratch-resistant glass to fix the scratch-resistant glass to the glass placing table.
Furthermore, the speed of the glass placing table is adjusted through a transverse speed adjusting button, the speed range is 0-100 mm/s, and the speed is directly displayed through a transverse speed display screen.
Furthermore, the speed of the base platform deck is adjusted through a longitudinal speed adjusting button, the speed range is 0-100 mm/s, and the speed is directly displayed through a longitudinal speed display screen.
By adopting the technical scheme, the invention at least has the following beneficial effects:
the invention discloses scratch-resistant glass and a preparation method thereof. The scratch-resistant glass performance is improved by matching the thickness of the glass with the compressive stress formed on the surface of the glass and the depth of a compressive stress layer. Compared with the common soda-lime-silica glass, the protective capability of the hand screen or the vehicle-mounted display screen is better, and the scratch and the frosting 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 invention has the following effects:
the scratch-resistant glass testing device is simple in structure and simple and practical to operate.
The speed of the reciprocating movement of the base carrying platform along the longitudinal direction is adjustable, the speed of the reciprocating movement of the glass placing platform 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, and the universality of the equipment is enhanced.
The scratch resistance result of the glass to be detected is visual and clear, and whether scratches exist on the glass can be observed in real time in the detection process.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of an apparatus for testing scratch resistance against a scratch resistant glass in accordance with one embodiment of the present invention;
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 ]
The device comprises a start-stop button 1, a pause button 2, a longitudinal speed adjusting button 3, a transverse speed adjusting button 4, a longitudinal speed display screen 5, a transverse speed display screen 6, a vertical upright post 7, a bolt 8, an auxiliary supporting piece 9, an adjusting piece 10, an adjusting bolt 11, a pressurizing device 12, a detection head 13, a diamond pressure head 13-1, a scraping head 13-2 with friction cloth, a diamond cutter wheel cutter head 13-3, glass 14, a glass fixing piece 15, a driving motor 16, a glass placing table 17, a base carrying platform 18, a base platform 19, a pressure display screen 20, a pressure adjusting button 21, a control panel 22, a one-way button 23 and a round-trip button 24.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments of the present invention are described in further detail with reference to the accompanying drawings.
Aiming at the scratch-resistant glass and the test thereof, the designed detection device can automatically and accurately scratch the glass, and the scratch resistance of the glass is judged by 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 protective capability of the obtained product on a mobile phone screen or a vehicle-mounted display screen is better than that of common soda-lime glass.
In one aspect, the present invention provides a method of preparing a scratch resistant glass, the method comprising the steps of:
the method comprises the following steps: preparing a glass matrix, wherein the glass matrix comprises the following components in percentage by mass: SiO22：58-63％，Al2O3：16-21％，Na2O≤10，K2O≤2％，B2O3≤2％，ZnO≤1％，Li2O：2-6％，P2O5≤2％；
Step two: and carrying out chemical strengthening treatment on the glass matrix 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 glass matrix is subjected to chemical strengthening treatment comprising:
first chemical strengthening treatment: heating at 370-460 deg.C for 2-8h, and soaking in NaNO3A solution;
and (3) second chemical strengthening treatment: the heating temperature is 370-460 ℃, the strengthening time is 10-100 min, and the soaking solution is KNO3And (3) solution.
The invention also provides the scratch-resistant glass prepared by the method, wherein the glass matrix of the scratch-resistant glass comprises the following components in percentage by mass: SiO22：58-63％，Al2O3：16-21％，Na2O≤10，K2O≤2％，B2O3≤2％，ZnO≤1％，Li2O：2-6％，P2O5≤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 700-1050 MPa; the depth of the compressive stress layer is 40 to 90 μm, preferably 60 to 80 μm.
Typically, the thickness of the scratch resistant glass used in the art is from 0.5mm to 1 mm.
The glass is more resistant to scratching when the numerical value of the compressive stress formed on the glass surface of the glass and the depth value of the compressive stress layer are not larger; if the value of the compressive stress formed on the surface of the glass and the depth value of the compressive stress layer are too large, the central tensile stress of the glass is too low, so that the glass can be broken when being subjected to certain pressure (for example, a scratch test by a detection head).
Therefore, in the embodiment, the component components of the substrate glass and the conditions of the secondary chemical strengthening treatment are controlled so as to control the relationship between the numerical value of the compressive stress formed on the surface of the glass and the depth value of the compressive stress layer, so that the numerical value of the compressive stress formed on the surface of the glass and the depth value of the compressive stress layer are kept in 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 optimal.
The components of the base glass are calculated by mass percent, and the components of the base glass comprise SiO by mass percent2：58-63％，Al2O3：16-21％，Na2O≤10％，K2O≤2％，B2O3≤2％，ZnO≤1％，Li2O：2-6％，P2O5≤2％。
The role and specific content of each component in the base glass are discussed below:
SiO2is a main component constituting a glass skeleton, and a three-dimensional silica skeleton is formed in glass. Such as SiO2The content is low, the conditions of increasing the thermal expansion coefficient of the glass, deteriorating the scratch resistance and the like can occur, and the chemical strengthening treatment effect at the later stage can be influenced; such as SiO2The content of the glass is 58 to 63 wt% based on the base glass of the present invention, which causes an increase in viscosity and difficulty in melting the glass.
Al2O3The introduction of the (B) can reduce the crystallization tendency of the glass and improve the mechanical strength and hardness of the glass; if Al is present2O3The mass fraction of (b) is too low, and the desired surface compressive stress S and stress layer thickness t cannot be obtained by ion exchange. But if Al is present2O3When the mass fraction of (b) is too high, the viscosity of the glass increases, the melting or forming of the glass becomes difficult, and the liquidus temperature increases to be easily devitrified, and the content thereof in the base glass of the present invention is 16 to 21 wt%.
Li2O is an essential component for ion exchange of the glass for secondary strengthening to form surface compressive stress and improve the brittleness of the glass, and is contained in the base glass of the present invention in an amount of 2 to 6 wt%.
Na2O is a network exo-oxide, which is an essential component for ion exchange in the chemical strengthening process, and improves the meltability of the glass. Na (Na)2O content is small, it is difficult to form a desired surface compressive stress layer by ion exchange, and Na2Too high of O content, heat of glassThe chemical properties are remarkably lowered and the daily weatherability becomes low, and the content thereof in the base glass of the present invention is 10 wt% or less.
K2O is a network exo-oxide, which can improve the ion exchange speed, increase the transparency and luster of the glass and improve the melting of the glass. K2When the content of O is insufficient, the meltability of the glass and the ion exchange rate are remarkably reduced. K20 content is too high, weather resistance is lowered, and hardening speed becomes slow during glass forming, and its content in the base glass of the present invention is 2 wt% or less.
B2O3In some cases, the content may be higher in order to improve the meltability at high temperatures or the glass strength, and the glass may be difficult to form, and the content may be 2 wt% or less in the base glass of the present invention.
ZnO is a component having a significant effect of reducing the viscosity of the glass and inhibiting crystal precipitation, and is easily crystallized at a high content, and the content thereof in the base glass of the present invention is 1 wt% or less.
P2O5Optional ingredients which help to improve the low temperature melting properties of the glass, when present in high levels, cause the glass to phase separate and opacify, which is present in the base glass of the present invention at levels below 1 wt.%.
Another aspect of the present invention provides an apparatus for testing the scratch resistance of the above scratch resistant glass, as shown in fig. 1-3. In which 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 lateral direction described below.
An apparatus for testing the scratch resistance of a scratch resistant glass comprising:
the glass placing table 17 is fixedly provided with the scratch-resistant glass through a glass fixing piece 15; the scratch-resistant glass comprises a glass matrix and is characterized in that the glass matrix comprises the following components in percentage by mass: SiO22：58-63％，Al2O3：16-21％，Na2O≤10，K2O≤2％，B2O3≤2％，ZnO≤1％，Li2O：2-6％，P2O5≤2％；
A base stage 18 on which the glass placement table 17 is placed; the base stage 18 is reciprocated in the longitudinal direction by the longitudinal driving mechanism; the glass placing table 17 is reciprocated on the base stage 18 in the lateral direction by the lateral driving mechanism;
the scratch-resistant detection structure is arranged above the scratch-resistant glass and comprises a pressurizing device 12 and a replaceable detection head 13; the detection head 13 is arranged on the pressurizing device 12 and can be contacted with the scratch-resistant glass;
wherein the scratch-resistant detection structure does not move with the glass placement table 17 or the scratch-resistant detection structure when the glass placement table 17 or the scratch-resistant detection structure is moved.
A base platform 19 on which base stage 18 is placed and base stage 18 reciprocates in the longitudinal direction relative to base platform 19;
the support, the support is fixed to be set up on base platform 19 and scratch-resistant detection structure is fixed to the support.
The console 22, the console 22 is stably placed on the horizontal plane; the base platform 19 is fixedly placed on the console 22;
the control console 22 is provided with 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 the pressurizing device 12;
wherein the lateral speed adjusting knob 4 controls the rate of reciprocating 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 reciprocating movement 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 to 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 upright 7;
wherein the scratch resistant detection structure is fixed on a first end of the auxiliary support 9 and the extension direction of the scratch resistant detection structure is perpendicular to the extension direction of the auxiliary support 9.
An adjusting member 10, wherein the adjusting member 10 is arranged on the vertical upright 7, and the adjusting member 10 extends perpendicular to the height direction of the vertical upright 7;
wherein the auxiliary support 9 is arranged between the adjusting member 10 and the base platform 19; the adjusting member 10 is positioned right above the second end of the auxiliary support member 9;
the adjusting member 10 is further provided with an adjusting bolt 11, and the bottom of the adjusting bolt 11 contacts the second end of the auxiliary supporting member 9;
wherein, the relative position of the adjusting bolt 11 and the adjusting member 10 is adjusted to make the bottom of the adjusting bolt 11 push the second end of the auxiliary supporting member 9 to incline towards the direction of the base platform 19, so that the first end of the auxiliary supporting member 9 inclines away from the base platform 19;
when the first end of the auxiliary supporting member 9 is inclined to a direction away from the base platform 19, the detection head 13 of the scratch-resistant detection structure does not contact with the scratch-resistant glass.
Preferably, the detection head 13 is mounted on the pressing device 12 by means of a jig.
Preferably, the sensing head 13 is selected from one of a diamond indenter 13-1, a scraping head 13-2 with rubbing cloth, and a glass cutting head 13-3 of a diamond cutter wheel.
Preferably, the pressurizing device 12 adjusts the pressure by the pressure adjusting knob 21, and the pressure is in the range of 0-50N.
Preferably, the auxiliary support 9 is mounted on the vertical upright 7 at a position between the first and second ends thereof by means of bolts 8.
Preferably, an adjusting member 10 is mounted on the top end of the vertical post 7.
Preferably, the console 22 is further 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 may pause the test process; the lateral speed display screen 6 displays the lateral moving speed of the glass placing table 17 at this time; the longitudinal speed display screen 5 displays the longitudinal moving speed of the base platform 18 at this time; the one-way button 23 controls the detection head 13 to move only once, for example, in the longitudinal direction, without returning; the shuttle button 24 is, for example, shuttled once in the longitudinal direction.
Preferably, two glass fixtures 15 are placed at edge positions of both sides of the scratch-resistant glass, respectively, and both end portions of the glass fixtures 15 extend beyond the scratch-resistant glass, and both end portions of the glass fixtures 15 are fixed to the glass placing table 17 by bolts so that the glass fixtures 15 press the scratch-resistant glass to fix the scratch-resistant glass to the glass placing table 17.
Preferably, the glass placing table 17 is adjusted in speed by the lateral speed adjusting knob 4, the speed range is 0-100 mm/s, and the speed is directly displayed by the lateral speed display screen 6.
Preferably, the speed of the base carrier 18 is adjusted by the longitudinal speed adjusting knob 3, the speed range is 0-100 mm/s, and the speed is directly displayed by the longitudinal speed display screen 5.
Preferably, one side of the glass placing table 17 in the moving direction thereof is provided with a driving motor 16, as shown in fig. 1 and 3. The driving motor 16 drives the glass placing table 17 to move along the transverse direction, and the specific driving mode adopts a conventional driving mode in the field, for example, a mode that a motor capable of rotating forward and backward is additionally provided with a driving screw rod; the motor rotates forwards to push the glass placing table 17 to move forwards, and the motor rotates backwards to make the glass placing table 17 move backwards. More preferably, in order to make the glass placement table 17 move on the base stage 18 better, a rail sliding connection may be formed between the glass placement table 17 and the base stage 18.
Preferably, the base stage 18 is provided with another drive motor (not shown) on one side in its direction of movement. The structure and driving principle of the driving motor are the same as those of the driving motor 16, and the description thereof is omitted. More preferably, to allow for better movement of base stage 18 on base platform 19, a rail-sliding connection may be formed between base stage 18 and base platform 19.
Alternatively, the holder, the glass mount 15, the glass placement table 17, the base stage 18, and the base platform 19 are made of a hard aluminum alloy material. The longitudinal speed display screen 5, the transverse speed display screen 6 and the pressure display screen 20 adopt digital display tables. The longitudinal speed adjusting button 3, the transverse speed adjusting button 4 and the pressure adjusting button 21 adopt a knob mode.
In 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 member 1515, the detection head 13 is selected for detection, the detection head 13 can be replaced by different detection heads according to the detection requirement, and the detection head can be selected or customized according to the actual requirement.
Example a, the scoring instrument uses a diamond indenter 13-1, a pressure adjustment knob 21 to select different pressures, and a single pass of scratch test in either the lateral or longitudinal direction, with the longitudinal speed adjustment knob 3 or the lateral speed adjustment knob 4 selecting the appropriate speed. Such as: adopting a Rockwell diamond pressure head with HRC-3 specification, a cone angle (120 +/-0.35) °, a one-way single-way speed of 5mm/s, a stroke of 50mm (which means that the travel distance of a detection head is 50mm), the interval of each scoring position is not less than 5mm, and the pressure is gradually increased from 0N to the generation of a scoring mark, so that the scoring threshold value of the glass 14 to be detected is obtained.
In the example B, the scraping appliance adopts the scraping head 13-2 with different replaceable friction cloths, the pressure adjusting button 21 selects proper pressure, the scraping test is carried out by reciprocating motion in the transverse direction and the longitudinal direction, and the longitudinal speed adjusting button 3 and the transverse speed adjusting button 4 select proper speed. Such as: a0000 # steel wool scraping head is adopted, the bidirectional speed of 5mm/s (the traveling speed in the transverse direction and the longitudinal direction is 5mm/s), the stroke is 30mm, the reciprocating motion is 1 circle, the pressure is 1-10N, and the threshold value of the friction scratch generated on the surface of the glass 14 is detected. In this example, the path of travel of the wiping head 13-2 is wave-like.
In example C, the diamond cutter wheel tool 13-3 uses the glass cutter head of the diamond cutter wheel, the pressure adjusting button 21 selects proper pressure, the scraping test is performed in one single pass in one transverse or longitudinal direction, and the longitudinal speed adjusting button 3 and the transverse speed adjusting button 4 select proper speeds. Such as: the single-way speed of 2mm/s of the diamond glass cutter head with the SQD of 125 degrees, the stroke of 50mm and the pressure of 1-10N are adopted, and the scoring width of the cutter wheel of the glass 14 is accurately measured through a microscope.
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
Examples 1-5 are shown in Table 1 below, and comparative examples are shown in Table 2.
As shown in tables 1 and 2, SiO, which is a glass raw material, was selected2、A12O3、Na2O、K2O、B2O3、P2O5ZnO and Li2O was weighed so that the total content of the glass raw materials in percentage by mass was 100% by weight under the composition conditions shown in the tables. And putting the uniformly mixed raw materials into a platinum crucible, melting the raw materials in a lifting sample melting furnace with the temperature of 1500-1800 ℃ to melt and clarify the raw materials, pouring the raw materials into a mold with the size of 150 x 70 x 20mm preheated to about 500 ℃, transferring the mold into an annealing furnace, preserving the temperature for 30min at about 630 ℃, and annealing at the speed of about 2 ℃/min to obtain the glass block. The glass block was cut and polished under the condition of a specification of 100X 50X 0.7mm, and finally both surfaces were polished to a mirror surface to obtain a sheet glass. These glasses were then heated to 180 ℃ to 400 ℃ followed by NaNO at 425 ℃3Soaking in salt solution for 5 hr, and performing primary chemical strengthening treatment. For the secondary strengthening conditions, the glass is heated to 400 ℃ at 250 ℃, and the secondary strengthening temperature and time are 390 ℃/40 minutes respectively.
TABLE 1
TABLE 2
For comparative examples 1 to 3 in which the glass components do not satisfy the requirements of the technical scheme of the present application, the result of the scratch resistance test is significantly poor, the content of each component in the glass composition satisfies examples 1 to 5 within the range of the present application, and the scratch resistance test performed under the same conditions of the scratching device as in comparative examples 1 to 3 produces a better scratch resistance effect.
It follows that, given the content of the various components of the glass composition, falling within the scope of the present application, it is possible to produce unexpected technical effects in terms of the value of the compressive stress of the glass surface, the depth of the stress layer, the resistance to scratching, etc.
The longitudinal direction and the transverse direction in this embodiment are perpendicular to each other.
It should be particularly noted that the various components or steps in the above embodiments can be mutually intersected, replaced, added or deleted, and therefore, the combination formed by the reasonable permutation and combination conversion shall also belong to the protection scope of the present invention, and the protection scope of the present invention shall not be limited to the embodiments.
The above is an exemplary embodiment of the present disclosure, and the order of disclosure of the above embodiment of the present disclosure is only for description and does not represent the merits of the embodiment. It should be noted that the discussion of any embodiment above is exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, of embodiments of the invention is limited to those examples, and that various changes and modifications may be made without departing from the scope, 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 of the invention 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 understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, of embodiments of the invention is limited to these examples; within the idea of an embodiment of the invention, also technical features in the above embodiment or in different embodiments may be combined and there are many other variations of the different aspects of an embodiment of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of the embodiments of the present invention are intended to be included within the scope of the embodiments of the present invention.
Claims (10)
1. A method of making a scratch resistant glass comprising the steps of:
the method comprises the following steps: preparing a glass matrix, wherein the glass matrix comprises the following components in percentage by mass: SiO22：58-63％，Al2O3：16-21％，Na2O≤10，K2O≤2％，B2O3≤2％，ZnO≤1％，Li2O：2-6％，P2O5≤2％；
Step two: and carrying out chemical strengthening treatment on the glass matrix to obtain the scratch-resistant glass.
2. The method for preparing scratch resistant glass according to claim 1, wherein in the second step, the chemical strengthening treatment is soaking the glass substrate in a salt solution after heating.
3. The method of producing a scratch resistant glass according to claim 2, wherein subjecting a glass substrate to a chemical strengthening treatment comprises:
first chemical strengthening treatment: heating at 370-460 deg.C for 2-8h, and soaking in NaNO3A solution;
and (3) second chemical strengthening treatment: the heating temperature is 370-460 ℃, the strengthening time is 10-100 min, and the soaking solution is KNO3And (3) solution.
4. A scratch-resistant glass, characterized by being produced by the method for producing a scratch-resistant glass according to any one of claims 1 to 3, wherein the components of the glass matrix of the scratch-resistant glass are, in mass percent: SiO22：58-63％，Al2O3：16-21％，Na2O≤10，K2O≤2％，B2O3≤2％，ZnO≤1％，Li2O：2-6％，P2O5≤2％。
5. The scratch resistant glass of claim 4, wherein the strengthening properties of the scratch resistant glass are: the compressive stress formed on the surface of the glass is 500-1050MPa, and the depth of the compressive stress layer is 40-90 μm.
6. An apparatus for testing the scratch-resistant property of the scratch-resistant glass according to any one of claims 4 to 5, comprising:
the glass placing table is fixedly provided with the scratch-resistant glass through a glass fixing piece; the scratch-resistant glass comprises a glass matrix and is characterized in that the scratch-resistant glass comprises the following components in percentage by mass: SiO22：58-63％，Al2O3：16-21％，Na2O≤10，K2O≤2％，B2O3≤2％，ZnO≤1％，Li2O：2-6％，P2O5≤2％；
A base stage on which the glass placing table is placed; the base carrying platform reciprocates along the longitudinal direction through a longitudinal driving mechanism; the glass placing table reciprocates on the base carrying table along the transverse direction through a transverse driving mechanism;
the scratch-resistant detection structure is arranged above the scratch-resistant glass and comprises 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.
7. The apparatus of claim 6, further comprising:
a base platform on which the base stage is placed and which reciprocates relative to the base platform along a longitudinal direction;
the support is fixedly arranged on the base platform, and the scratch-resistant detection structure is fixed to the support.
8. The apparatus of claim 7, wherein the bracket comprises:
the vertical upright post is vertically arranged on the base platform;
an auxiliary support fixed to the vertical pillar and extending perpendicular to a height direction of the vertical pillar; the auxiliary support member includes a first end and a second end extending out of the vertical post;
wherein the scratch resistant detection structure is fixed on the first end of the auxiliary support, and an extending direction of the scratch resistant detection structure is perpendicular to an extending direction of the auxiliary support.
9. The apparatus of claim 8, wherein the cradle further comprises:
an adjustment member that is provided on the vertical pillar and that extends perpendicular to a height direction of the vertical pillar;
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 also provided with an adjusting bolt, and the bottom of the adjusting bolt is contacted with the second end of the auxiliary supporting piece;
the relative position of the adjusting bolt and the adjusting piece is adjusted to enable the bottom of the adjusting bolt to push the second end of the auxiliary support piece to incline towards the direction of the base platform, so that the first end of the auxiliary support piece inclines away from the base platform;
when the first end of the auxiliary supporting piece inclines towards the direction far away from the base platform, the detection head of the scratch-resistant detection structure is not in contact with the scratch-resistant glass.
10. The apparatus of claim 7, further comprising:
the console is stably placed on a horizontal plane; the base platform is fixedly placed on the control platform;
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 lateral speed adjusting knob controls a rate of reciprocating movement of the glass placing table in the lateral direction by controlling a lateral driving mechanism;
the longitudinal speed adjusting knob controls the speed of the reciprocating movement of the base carrier along the longitudinal direction by controlling the longitudinal driving mechanism.
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