CN109949871A - The preparation method of alumina silicate glass chemical strengthening expansion rate calculation method and alumina silicate glass product - Google Patents
The preparation method of alumina silicate glass chemical strengthening expansion rate calculation method and alumina silicate glass product Download PDFInfo
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Abstract
The present invention relates to a kind of alumina silicate glass chemical strengthening expansion rate test method and the preparation methods of alumina silicate glass product.A kind of alumina silicate glass chemical strengthening expansion rate test method, comprising the following steps: chemical strengthening is carried out to alumina silicate glass piece, tests the size and middle cardiac stress of the chemically reinforced glass piece obtained under the different chemical strengthening times respectively；The expansion rate of the chemically reinforced glass piece under the different chemical strengthening times is calculated according to the size of the size of the chemically reinforced glass piece and the alumina silicate glass piece；The expansion rate of the chemically reinforced glass piece under the different chemical strengthening times and middle cardiac stress are subjected to linear regression and obtain the general formula of alumina silicate glass chemical strengthening expansion rate K, K=a × CT+b, wherein, CT is the middle cardiac stress of chemically reinforced glass piece, and a and b are the constant that linear regression obtains.Above-mentioned alumina silicate glass chemical strengthening expansion rate test method is relatively simple.
Description
Technical field
The present invention relates to glass art, more particularly to a kind of alumina silicate glass chemical strengthening expansion rate calculation method and
The preparation method of alumina silicate glass product.
Background technique
In recent years, the equipment such as smart phone, tablet computer are constantly universal, and show slimming and light-weighted development
Trend.Slimming meeting one problem of bring is that the intensity of glass can decline with the reduction of thickness.Make in order to meet
It is required that, it is necessary to make the glass of display that still there is high intensity under small thickness.In order to reach this purpose, need pair
Glass is strengthened.
Currently, in the composition of alumina silicate glass used, in order to guarantee ion-exchange capacity and melting in view of glass
The content of the factors such as melting property, formability, devitrification resistance, alkali metal oxide is higher.When strengthening to alumina silicate glass, by
It is relatively thin in glass, it is not significant using the effect of physical strengthening, therefore it is typically chosen chemical strengthening method.
The predominantly alumina silicate glass through chemical strengthening as cover-plate glass, Al2O3Molar fraction be generally
8%~17%, frequently with ion-exchange temperature be 350 DEG C~430 DEG C, the time be 4~10h, bearing stress 400MPa
~800MPa, ion exchange depth are 20 μm~80 μm.
Alumina silicate glass outer dimension after chemical strengthening, which can expand, to become larger, this is just to the ruler of alumina silicate glass product
Very little design proposes higher requirement.Chemical strengthening degree is different, and alumina silicate glass outer dimension after chemical strengthening can expand
Rate is also different.As soon as often doing a cover board project or protector project in industry at present, an expansion rate test is carried out, is taken
The product of the good shape of 10-20 piece finishing impression, is measured size before reinforcing using Quadratic Finite Element, and it is strong that alumina silicate glass is carried out chemistry
Change, measured size after reinforcing using Quadratic Finite Element, size subtracts size before reinforcing after reinforcing, the reinforcing expansion under feature intensified condition
Size, thus come finishing impression size of identifying project.When changing intensified condition such as enhanced time etc., needs to retest, make
At a large amount of waste paper, waste of resource, and more inconvenience.
Summary of the invention
Based on this, it is necessary to provide a kind of relatively simple alumina silicate glass chemical strengthening expansion rate test method and aluminium
The preparation method of silicate glass product.
A kind of alumina silicate glass chemical strengthening expansion rate test method, comprising the following steps:
Chemical strengthening is carried out to alumina silicate glass piece, tests the chemical strengthening obtained under the different chemical strengthening times respectively
The size of sheet glass and middle cardiac stress；
It is strong that different chemistry are calculated according to the size of the chemically reinforced glass piece and the size of the alumina silicate glass piece
Change the expansion rate of the chemically reinforced glass piece under the time；
The expansion rate of the chemically reinforced glass piece under the different chemical strengthening times and middle cardiac stress are linearly returned
Return to obtain alumina silicate glass chemical strengthening expansion rate K, K=a × CT+b, wherein CT is that the center of chemically reinforced glass piece is answered
Power, a and b are the constant that linear regression obtains.
Above-mentioned alumina silicate glass chemical strengthening expansion rate test method passes through the institute tested under the different chemical strengthening times
The expansion rate and middle cardiac stress for stating chemically reinforced glass piece carry out linear regression and obtain alumina silicate glass chemical strengthening expansion rate K
General formula K=a × CT+b, the relationship of expansion rate Yu middle cardiac stress is obtained, to answer according to the center of alumina silicate glass product
Power can quickly calculate the expansion rate of strengthening process, more convenient, without being strengthened the test for carrying out expansion rate every time；Through
Test, this method are suitable for the expansion rate test of the alumina silicate glass of various components, and versatility is stronger；According to alumino-silicate glass
General formula K=a × CT+b of glass chemical strengthening expansion rate K, can instruct the control of chemical strengthening during finishing impression, be preset
The alumina silicate glass product of size.
It is described in one of the embodiments, that chemical strengthening is carried out to alumina silicate glass piece, different chemistry are tested respectively
In the step of size and middle cardiac stress of the chemically reinforced glass piece obtained under enhanced time, the test chemical strengthening time is respectively
T1、T2、T3And T4Chemically reinforced glass piece size and middle cardiac stress.
The T in one of the embodiments,1、T2、T3And T4Respectively 2h, 4h, 5.5h, 8h.
A kind of alumina silicate glass chemical strengthening expansion rate test method, comprising the following steps:
Chemical strengthening is carried out to alumina silicate glass piece, tests the chemical strengthening obtained under the different chemical strengthening times respectively
Size, bearing stress and the stress layer depth of sheet glass；
Do not assimilated according to the size of the chemically reinforced glass piece and the calculating of the size of the alumina silicate glass piece
Learn the expansion rate of the chemically reinforced glass piece under enhanced time；
By the expansion rate of the chemically reinforced glass piece under the different chemical strengthening times, size, bearing stress and answer
Power layer depth carries out linear regression and obtains the general formula of alumina silicate glass chemical strengthening expansion rate K, K=a × CS × DOL/ (t-
2DOL)+b, wherein CS is the bearing stress of chemically reinforced glass piece, and DOL is the stress layer depth of chemically reinforced glass piece,
T is the thickness of chemically reinforced glass piece, and a and b are the constant that linear regression obtains.
It is described in one of the embodiments, that chemical strengthening is carried out to alumina silicate glass piece, different chemistry are tested respectively
In the step of size of the chemically reinforced glass piece obtained under enhanced time, bearing stress and stress layer depth, test respectively
The chemical strengthening time is T1、T2、T3And T4Chemically reinforced glass piece size, bearing stress and stress layer depth.
A kind of alumina silicate glass chemical strengthening expansion rate test method, comprising the following steps:
Chemical strengthening is carried out to alumina silicate glass piece and obtains chemically reinforced glass piece；
The middle cardiac stress of the chemically reinforced glass piece under at least two chemical strengthening times is tested, calculates at least two
The expansion rate of the chemically reinforced glass piece under the chemical strengthening time, and alumino-silicate glass is calculated according to expansion rate calculation formula
Glass chemical strengthening expansion rate,
The expansion rate calculation formula are as follows: K=a × CT+b, wherein CT is that the center of the chemically reinforced glass piece is answered
Power, a and b are the constant being calculated by the expansion rate calculation formula.
It is described in one of the embodiments, to calculate the chemically reinforced glass piece under at least two chemical strengthening times
In the step of expansion rate, the expansion rate for calculating the three-dimensional dimension of the chemically reinforced glass obtains average ratio as chemical strong
Change the expansion rate of sheet glass.
A kind of alumina silicate glass chemical strengthening expansion rate test method, comprising the following steps:
Chemical strengthening is carried out to alumina silicate glass piece and obtains chemically reinforced glass piece；
Test size, bearing stress and the stress of the chemically reinforced glass piece under at least two chemical strengthening times
Layer depth, calculates the expansion rate of the chemically reinforced glass piece under at least two chemical strengthening times, and is calculated according to expansion rate
Formula calculates the alumina silicate glass chemical strengthening expansion rate,
The expansion rate calculation formula are as follows: K=a × CS × DOL/ (t-2DOL)+b, wherein CS is chemically reinforced glass piece
Bearing stress, DOL is the stress layer depth of the chemically reinforced glass piece, and t is the thickness of chemically reinforced glass piece, a and b
For the constant being calculated by the expansion rate calculation formula.
It is described in one of the embodiments, to calculate the chemically reinforced glass piece under at least two chemical strengthening times
In the step of expansion rate, the expansion rate for calculating the three-dimensional dimension of the chemically reinforced glass piece obtains average ratio as chemistry
The expansion rate of strengthened glass piece.
A kind of preparation method of alumina silicate glass product, comprising the following steps:
The expansion rate for testing alumina silicate glass, obtains expansion rate calculation formula K=a × CT+b, wherein CT is chemistry
The middle cardiac stress of strengthened glass, a and b are constant；
According to the original size of alumina silicate glass product, design size and expansion rate calculation formula, aluminosilicate is calculated
Aluminosilicate is calculated according to expansion rate calculation formula and design expansion rate in the design expansion rate of the chemical strengthening of glass product
The default center stress of glass product；And
Chemical strengthening is carried out to alumina silicate glass product, and monitors the middle cardiac stress of alumina silicate glass, works as manosil AS
When the middle cardiac stress of salt glass is equal to the default center stress, stop chemical strengthening.
Specific embodiment
It to facilitate the understanding of the present invention, below will be to invention is more fully described.But the present invention can be to be permitted
Mostly different form is realized, however it is not limited to embodiment described herein.On the contrary, purpose of providing these embodiments is makes
It is more thorough and comprehensive to the understanding of the disclosure.
The alumina silicate glass chemical strengthening expansion rate test method of one embodiment, comprising the following steps:
Step S110, chemical strengthening is carried out to alumina silicate glass piece, tests under the different chemical strengthening times and obtains respectively
Chemically reinforced glass piece size and middle cardiac stress.
In the step, the multi-disc alumina silicate glass piece for choosing consistency of thickness is carried out respectively at the chemical strengthening of different time
Reason obtains chemically reinforced glass piece.Preferably, it selects and is tested with a thickness of the alumina silicate glass piece of 0.55mm.
For the objectivity of data, the chemical intensification treatment of different time is carried out respectively using multiple groups alumina silicate glass piece
Obtain chemically reinforced glass piece.Every group includes multi-disc alumina silicate glass piece, and every group of alumina silicate glass piece repeat
It tests, obtains average value after test size and middle cardiac stress.Certainly, it carries out repeating to test just for the sake of guaranteeing that data are more objective
It sees.
Alumina silicate glass piece is divided into four groups in one of the embodiments, every group 15, is changed at 420 DEG C
It learns and strengthens, the time of chemical strengthening is respectively 2h, 4h, 5.5h, 8h, after test size and middle cardiac stress, calculates average value conduct
The middle cardiac stress and size of every group of alumina silicate glass.
In one of the embodiments, alumina silicate glass piece by percentage to the quality, including SiO255.0~
68.0%；Al2O35.0~20.0%；CaO 0~5.0%；MgO 0~10.0%；K2O 1.0~8.0%；Na2O 10.0~
17.0%.
In some embodiments, alumina silicate glass piece first carries out blank, finishing impression and cleaning before carrying out chemical strengthening.Essence
The size of alumina silicate glass piece is 75mm × 145mm × 0.55mm after carving.
The test chemical strengthening time is T respectively in one of the embodiments,1、T2、T3And T4Chemically reinforced glass piece
Size and middle cardiac stress.Preferably, T1、T2、T3And T4Respectively 2h, 4h, 5.5h, 8h.
Chemical strengthening temperature is 420 DEG C in one of the embodiments, the bath salt that chemical strengthening uses be containing 0~
The potassium nitrate fuse salt of 10% (mass percentage) sodium nitrate.
Step S120, it is calculated not according to the size of the chemically reinforced glass piece and the size of the alumina silicate glass piece
With the expansion rate of the chemically reinforced glass piece under chemistry enhanced time.
The expansion rate for calculating the three-dimensional dimension of chemically reinforced glass piece in one of the embodiments, obtains average ratio
Expansion rate as chemically reinforced glass piece.
The expansion rate for calculating the length and width of chemically reinforced glass piece in one of the embodiments, obtains average expansion
Expansion rate of the rate as chemically reinforced glass piece.
Step S130, the expansion rate of the chemically reinforced glass piece under the different chemical strengthening times and middle cardiac stress are subjected to line
Property return to obtain alumina silicate glass chemical strengthening expansion rate K, K=a × CT+b, wherein CT be chemically reinforced glass piece in
Cardiac stress, a and b are the constant that linear regression obtains.
In the expression formula of above-mentioned silicate glass chemical strengthening expansion rate K, the unit of CT is MPa.
Above-mentioned alumina silicate glass chemical strengthening expansion rate test method passes through the institute tested under the different chemical strengthening times
The expansion rate and middle cardiac stress for stating chemically reinforced glass piece carry out linear regression and obtain alumina silicate glass chemical strengthening expansion rate K
General formula K=a × CT+b, the relationship of expansion rate Yu middle cardiac stress is obtained, to answer according to the center of alumina silicate glass product
Power can quickly calculate the expansion rate of strengthening process, more convenient, without being strengthened the test for carrying out expansion rate every time；Through
Test, this method are suitable for the expansion rate test of the alumina silicate glass of various components, and versatility is stronger；According to alumino-silicate glass
General formula K=a × CT+b of glass chemical strengthening expansion rate K, can instruct the control of chemical strengthening during finishing impression, be preset
The alumina silicate glass product of size.
The alumina silicate glass chemical strengthening expansion rate test method of another embodiment, comprising the following steps:
Step S210, chemical strengthening is carried out to alumina silicate glass piece, tests under the different chemical strengthening times and obtains respectively
Chemically reinforced glass piece size, bearing stress and stress layer depth.
In the step, the multi-disc alumina silicate glass piece for choosing consistency of thickness is carried out respectively at the chemical strengthening of different time
Reason obtains chemically reinforced glass piece.Preferably, it selects and is tested with a thickness of the alumina silicate glass piece of 0.55mm.
For the objectivity of data, the chemical intensification treatment of different time is carried out respectively using multiple groups alumina silicate glass piece
Obtain chemically reinforced glass piece.Every group includes multi-disc alumina silicate glass piece, and every group of alumina silicate glass piece repeat
It tests, obtains average value after test size, bearing stress (CS) and stress layer depth (DOL).Certainly, it carries out repeating test
Just for the sake of guaranteeing that data are more objective.
Alumina silicate glass piece is divided into four groups in one of the embodiments, every group 15, is changed at 420 DEG C
It learns and strengthens, the time of chemical strengthening is respectively 2h, 4h, 5.5h, 8h, after test size, bearing stress and stress layer depth, meter
Calculate middle cardiac stress and size of the average value as every group of alumina silicate glass.
In one of the embodiments, alumina silicate glass piece by percentage to the quality, including SiO255.0~
68.0%；Al2O35.0~20.0%；CaO 0~5.0%；MgO 0~10.0%；K2O 1.0~8.0%； Na2O 10.0
~17.0%.
In some embodiments, alumina silicate glass piece first carries out blank, finishing impression and cleaning before carrying out chemical strengthening.Essence
The size of alumina silicate glass piece is 75mm × 145mm × 0.55mm after carving.
The test chemical strengthening time is T respectively in one of the embodiments,1、T2、T3And T4Chemically reinforced glass piece
Size, bearing stress and stress layer depth.Preferably, T1、T2、T3And T4Respectively 2h, 4h, 5.5h, 8h.
Chemical strengthening temperature is 420 DEG C in one of the embodiments, the bath salt that chemical strengthening uses be containing 0~
The potassium nitrate fuse salt of 10% (mass percentage) sodium nitrate.
Step S220, different chemistry are calculated by force according to the size of chemically reinforced glass piece and the size of alumina silicate glass piece
Change the expansion rate of the chemically reinforced glass piece under the time.
Size * 100% before expansion rate=(size before size-reinforcing after reinforcing)/reinforcing.The expansion rate being related to below is equal
It calculates in this way.
The expansion rate for calculating the three-dimensional dimension of chemically reinforced glass piece in one of the embodiments, obtains average ratio
Expansion rate as chemically reinforced glass piece.
The expansion rate for calculating the length and width of chemically reinforced glass piece in one of the embodiments, obtains average expansion
Expansion rate of the rate as chemically reinforced glass piece.
Step S230, the expansion rate, size, surface of the chemically reinforced glass piece under the different chemical strengthening times are pressed
Stress and stress layer depth carry out linear regression and obtain alumina silicate glass chemical strengthening expansion rate K, K=a × CS × DOL/
(t-2DOL)+b, wherein CS is the bearing stress of chemically reinforced glass piece, and DOL is the stress layer depth of chemically reinforced glass piece
Degree, t are the thickness of chemically reinforced glass piece, and a and b are the constant that linear regression obtains.
In the expression formula of above-mentioned silicate glass chemical strengthening expansion rate K, the unit of CS is MPa, and the unit of DOL is μm,
The unit of t is μm.
Since CT=CS × DOL/ (T-2DOL) is contained in expansion rate relational expression so CT contains stress and thickness
The variation of stress and thickness.
Above-mentioned alumina silicate glass chemical strengthening expansion rate test method passes through the institute tested under the different chemical strengthening times
Expansion rate, bearing stress and the stress layer depth for stating chemically reinforced glass piece carry out linear regression and obtain alumina silicate glass
The general formula for strengthening expansion rate K is learned, the relationship of expansion rate and bearing stress and stress layer depth is obtained, thus according to aluminosilicate
The bearing stress and stress layer depth of glass product can quickly calculate the expansion rate of strengthening process, more convenient, without every
It is secondary to be strengthened the test for carrying out expansion rate；After tested, this method is suitable for the expansion of the alumina silicate glass of various components
Rate test, versatility are stronger；According to the general formula of alumina silicate glass chemical strengthening expansion rate K, can change during finishing impression
The control strengthened is learned, the alumina silicate glass product of pre-set dimension is obtained.
The alumina silicate glass chemical strengthening expansion rate test method of one embodiment, comprising the following steps:
Step S310, chemical strengthening is carried out to alumina silicate glass piece and obtains chemically reinforced glass piece.
In the step, the multi-disc alumina silicate glass piece for choosing consistency of thickness is carried out respectively at the chemical strengthening of different time
Reason obtains chemically reinforced glass piece.Preferably, it selects and is tested with a thickness of the alumina silicate glass piece of 0.55mm.
For the objectivity of data, the chemical strengthening of different time is carried out respectively using at least two groups alumina silicate glass piece
Processing obtains chemically reinforced glass piece.Every group includes multi-disc alumina silicate glass piece, the progress of every group of alumina silicate glass piece
It repeats to test, obtains average value after test size and middle cardiac stress.Certainly, carry out repeat test just for the sake of guarantee data compared with
It is objective.
In one of the embodiments, alumina silicate glass piece by percentage to the quality, including SiO255.0~
68.0%；Al2O35.0~20.0%；CaO 0~5.0%；MgO 0~10.0%；K2O 1.0~8.0%； Na2O 10.0
~17.0%.
In some embodiments, alumina silicate glass piece first carries out blank, finishing impression and cleaning before carrying out chemical strengthening.Essence
The size of alumina silicate glass piece is 75mm × 145mm × 0.55mm after carving.
Chemical strengthening temperature is 420 DEG C in one of the embodiments, the bath salt that chemical strengthening uses be containing 0~
The potassium nitrate fuse salt of 10% (mass percentage) sodium nitrate.
Step S320, the middle cardiac stress for testing the chemically reinforced glass piece under at least two chemical strengthening times, calculates extremely
The expansion rate of chemically reinforced glass piece under few two chemical strengthening times, and aluminosilicate is calculated according to expansion rate calculation formula
Chemically enhancing glass expansion rate,
Expansion rate calculation formula are as follows: K=a × CT+b, wherein CT is the middle cardiac stress of chemically reinforced glass piece, and a and b are
The constant being calculated by expansion rate calculation formula.
In the step, alumina silicate glass chemical strengthening expansion rate is calculated according to expansion rate calculation formula, refer to by
Cardiac stress and expansion rate data bring in expansion rate calculation formula K=a × CT+b the numerical value that constant a and b is calculated into two groups,
To obtain general formula K=a × CT+b.
The expansion rate of chemically reinforced glass piece under at least two chemical strengthening times is calculated in one of the embodiments,
In step, the expansion rate for calculating the three-dimensional dimension of chemically reinforced glass obtains average ratio as the swollen of chemically reinforced glass piece
Swollen rate.Preferably, the expansion rate for calculating the length and width of chemically reinforced glass piece obtains average ratio as chemical strengthening
The expansion rate of sheet glass.
Theoretically, expansion is brought by the expansion rate and center stress of chemically reinforced glass piece under two chemical strengthening times
Rate calculation formula K=a × CT+b, can be calculated the numerical value of constant a and b, certainly, can be by more in order to more accurate
Group data carry out linear regression and obtain general formula K=a × CT+b of alumina silicate glass chemical strengthening expansion rate K, obtain expansion rate
With the relationship of middle cardiac stress.The test chemical strengthening time is T respectively in one of the embodiments,1、T2、T3And T4Chemistry it is strong
Change the size and middle cardiac stress of sheet glass.Preferably, T1、T2、T3And T4Respectively 2h, 4h, 5.5h, 8h.
In the expression formula of above-mentioned silicate glass chemical strengthening expansion rate K, the unit of CT is MPa.
Above-mentioned alumina silicate glass chemical strengthening expansion rate test method passes through the institute tested under the different chemical strengthening times
The expansion rate and middle cardiac stress for stating chemically reinforced glass piece carry out linear regression and obtain alumina silicate glass chemical strengthening expansion rate K
General formula K=a × CT+b, the relationship of expansion rate Yu middle cardiac stress is obtained, to answer according to the center of alumina silicate glass product
Power can quickly calculate the expansion rate of strengthening process, more convenient, without being strengthened the test for carrying out expansion rate every time；Through
Test, this method are suitable for the expansion rate test of the alumina silicate glass of various components, and versatility is stronger；According to alumino-silicate glass
General formula K=a × CT+b of glass chemical strengthening expansion rate K, can instruct the control of chemical strengthening during finishing impression, be preset
The alumina silicate glass product of size.
The alumina silicate glass chemical strengthening expansion rate test method of another embodiment, comprising the following steps:
Step S410, chemical strengthening is carried out to alumina silicate glass piece and obtains chemically reinforced glass piece.
In the step, the multi-disc alumina silicate glass piece for choosing consistency of thickness is carried out respectively at the chemical strengthening of different time
Reason obtains chemically reinforced glass piece.Preferably, it selects and is tested with a thickness of the alumina silicate glass piece of 0.55mm.
For the objectivity of data, the chemical strengthening of different time is carried out respectively using at least two groups alumina silicate glass piece
Processing obtains chemically reinforced glass piece.Every group includes multi-disc alumina silicate glass piece, the progress of every group of alumina silicate glass piece
It repeats to test, to obtain average value after test size and bearing stress and stress layer depth.Certainly, it carries out repeating to test only
It is to guarantee that data are more objective.
In one of the embodiments, alumina silicate glass piece by percentage to the quality, including SiO255.0~
68.0%；Al2O35.0~20.0%；CaO 0~5.0%；MgO 0~10.0%；K2O 1.0~8.0%； Na2O 10.0
~17.0%.
In some embodiments, alumina silicate glass piece first carries out blank, finishing impression and cleaning before carrying out chemical strengthening.Essence
The size of alumina silicate glass piece is 75mm × 145mm × 0.55mm after carving.
Chemical strengthening temperature is 420 DEG C in one of the embodiments, the bath salt that chemical strengthening uses be containing 0~
The potassium nitrate fuse salt of 10% (mass percentage) sodium nitrate.
Step S420, size, the bearing stress of the chemically reinforced glass piece under at least two chemical strengthening times are tested
And stress layer depth, the expansion rate of chemically reinforced glass piece under at least two chemical strengthening times is calculated, and according to expansion rate meter
It calculates formula and calculates alumina silicate glass chemical strengthening expansion rate,
Expansion rate calculation formula are as follows: K=a × CS × DOL/ (t-2DOL)+b, wherein CS is the table of chemically reinforced glass piece
Face pressure stress, DOL are the stress layer depth of chemically reinforced glass piece, and t is the thickness of chemically reinforced glass piece, and a and b are constant.
In the step, alumina silicate glass chemical strengthening expansion rate is calculated according to expansion rate calculation formula, refers to leading to
Cross the expansion rate, size of chemically reinforced glass piece, bearing stress and stressor layers depth under two groups of chemical strengthening times bring into it is swollen
Swollen rate calculation formula K=a × CS × DOL/ (t-2DOL)+b, can be calculated the numerical value of constant a and b, to obtain general formula K
=a × CS × DOL/ (t-2DOL)+b.
The expansion rate of chemically reinforced glass piece under at least two chemical strengthening times is calculated in one of the embodiments,
In step, the expansion rate for calculating the three-dimensional dimension of chemically reinforced glass obtains average ratio as the swollen of chemically reinforced glass piece
Swollen rate.Preferably, the expansion rate for calculating the length and width of chemically reinforced glass piece obtains average ratio as chemical strengthening
The expansion rate of sheet glass.
Theoretically, by the expansion rate, size of chemically reinforced glass piece under two chemical strengthening times, bearing stress and
Stressor layers depth brings expansion rate calculation formula K=a × CS × DOL/ (t-2DOL)+b into, and the number of constant a and b can be calculated
Value in order to more accurate, linear regression can be carried out by multi-group data and obtains alumina silicate glass chemical strengthening expansion certainly
General formula K=a × CS × DOL/ (t-2DOL)+b of rate, obtains the pass of expansion rate Yu size, bearing stress and stress layer depth
System.The test chemical strengthening time is T respectively in one of the embodiments,1、T2、T3And T4Chemically reinforced glass piece ruler
Very little, bearing stress and stress layer depth.Preferably, T1、T2、T3And T4Respectively 2h, 4h, 5.5h, 8h.
In the expression formula of above-mentioned silicate glass chemical strengthening expansion rate K, the unit of CT is MPa, and the unit of DOL is μm,
The unit of t is μm.
Above-mentioned alumina silicate glass chemical strengthening expansion rate test method passes through the institute tested under the different chemical strengthening times
Expansion rate, bearing stress and the stress layer depth for stating chemically reinforced glass piece carry out linear regression and obtain alumina silicate glass
The general formula for strengthening expansion rate K is learned, the relationship of expansion rate and bearing stress and stress layer depth is obtained, thus according to aluminosilicate
The bearing stress and stress layer depth of glass product can quickly calculate the expansion rate of strengthening process, more convenient, without every
It is secondary to be strengthened the test for carrying out expansion rate；After tested, this method is suitable for the expansion of the alumina silicate glass of various components
Rate test, versatility are stronger；According to the general formula of alumina silicate glass chemical strengthening expansion rate K, can change during finishing impression
The control strengthened is learned, the alumina silicate glass product of pre-set dimension is obtained.
The preparation method of the alumina silicate glass product of one embodiment, comprising the following steps:
Step S510, the expansion rate for testing alumina silicate glass, obtains expansion rate calculation formula K=a × CT+b, wherein
CT is the middle cardiac stress of chemically reinforced glass, and a and b are constant.
In one embodiment, expansion rate calculation formula K=a × CT+b passes through above-mentioned alumina silicate glass chemical strengthening
Step S110~step S130 of expansion rate test method is obtained.
In a wherein embodiment, expansion rate calculation formula K=a × CT+b passes through above-mentioned alumina silicate glass chemistry
Step S310~step the S320 for strengthening expansion rate test method is obtained.
Step S520, it according to the original size of alumina silicate glass product, design size and expansion rate calculation formula, calculates
The design expansion rate of the chemical strengthening of alumina silicate glass product is calculated according to expansion rate calculation formula and design expansion rate
The default center stress of alumina silicate glass product.
The original size of alumina silicate glass product refers to the size of the aluminosilicate glass article without chemical strengthening.
Design size refers to the size of the preset alumina silicate glass product after strengthening.Design expansion rate passes through design size
It is calculated with original size.
The theoretical value that CT can be calculated in K=a × CT+b is brought into according to the expansion rate that is related to being calculated, that is, in advance
If middle cardiac stress.
Step S530, chemical strengthening is carried out to alumina silicate glass product, and monitors the middle cardiac stress of alumina silicate glass,
When the middle cardiac stress of alumina silicate glass is equal to the default center stress, stop chemical strengthening.
In the step, during carrying out chemical strengthening to alumina silicate glass product, silicate glass is monitored in real time
Middle cardiac stress, once so that the middle cardiac stress of alumina silicate glass, which is equal to default center stress, can stop chemical strengthening.
The preparation method of above-mentioned alumina silicate glass product, the middle cardiac stress by monitoring alumina silicate glass reach accurate
The purpose for controlling alumina silicate glass product can be reduced defective products generation.
It is described in detail below in conjunction with specific embodiment.
Examples 1 to 5
Examples 1 to 5 selects healthy and free from worry 2319 respectively, healthy and free from worry 2320, Electric Glass Co T2X-1, Xiao Te Xensation and south
The alumina silicate glass of five kinds of models of glass NBO-A is tested.
The alumina silicate glass piece that the alumina silicate glass of Examples 1 to 5 is obtained through blank, finishing impression and cleaning.Each reality
It applies example and is arranged 5 groups, every group 5, carry out chemical strengthening at 420 DEG C, the time of chemical strengthening is respectively 2h, 4h, 5.5h, 8h,
After testing chemical strengthening size and middle cardiac stress CT, middle cardiac stress of every group of the average value as every group of alumina silicate glass is calculated
(CT), surface stress (CS), ion exchange depth (DOL) and size, the test of the alumina silicate glass of acetonideexample 1~5
As a result respectively as shown in table 1~5.Wherein, middle cardiac stress (CT) is calculated by CT=CS × DOL/ (T-2DOL), and surface is answered
Power (CS) is tested by FSM-6000 (stress gauge), and ion exchange depth (DOL) is tested by FSM-6000, and size passes through three
Tie up size instrument test.Numerical value in 1~table of table 5 is the average value of every group of 5 alumina silicate glass pieces.
Table 1
By the expansion rate data and middle cardiac stress (CT), surface stress after chemical strengthening 0h, 2h, 4h, 5.5h, 8h in table 1
(CS), ion exchange depth (DOL) and t Value Data carry out linear regression fit, obtain expansion rate calculation formula K=
0.0000091 × CT-0.0000545 and K=0.0000091 × CS × DOL/ (t-2DOL) -0.0000545.
By middle cardiac stress (CT), surface stress (CS), ion exchange depth (DOL) and the t value number after chemical strengthening 10h
According to above-mentioned two formula is brought into, calculating expansion rate K is respectively 0.094122% and 0.094122%,
It is compared with expansion rate 0.09357% actually measured in table 1, it is almost the same.
Table 2
By the expansion rate data and middle cardiac stress (CT), surface stress after chemical strengthening 0h, 2h, 4h, 5.5h, 8h in table 2
(CS), ion exchange depth (DOL) and t Value Data carry out linear regression fit, obtain expansion rate calculation formula K=0.000007
× CT+0.000088 and K=0.000007 × CS × DOL/ (t-2DOL)+0.000088.
By middle cardiac stress (CT), surface stress (CS), ion exchange depth (DOL) and the t value number after chemical strengthening 10h
According to above-mentioned two formula is brought into, calculating expansion rate K is respectively expansion rate actually measured in 0.088% and 0.088% and table 2
0.07863% comparison, it is almost the same.
Table 3
By the expansion rate data and middle cardiac stress (CT), surface stress after chemical strengthening 0h, 2h, 4h, 5.5h, 8h in table 3
(CS), ion exchange depth (DOL) and t Value Data carry out linear regression fit, obtain expansion rate calculation formula K=0.000009
× CT-0.000072 and K=0.000009 × CS × DOL/ (t-2DOL) -0.000072.
By middle cardiac stress (CT), surface stress (CS), ion exchange depth (DOL) and the t value number after chemical strengthening 10h
According to above-mentioned two formula is brought into, it is respectively actually measured in 0.103446% and 0.103446% and table 3 for calculating expansion rate K
Expansion rate 0.10272% compares, almost the same.
Table 4
By the expansion rate data and middle cardiac stress (CT), surface stress after chemical strengthening 0h, 2h, 4h, 5.5h, 8h in table 4
(CS), ion exchange depth (DOL) and t Value Data carry out linear regression fit, obtain expansion rate calculation formula K=0.000011
× CT-0.000096 and K=0.000011 × CS × DOL/ (t-2DOL) -0.000096.
By middle cardiac stress (CT), surface stress (CS), ion exchange depth (DOL) and the t value number after chemical strengthening 10h
According to above-mentioned two formula is brought into, it is respectively actually measured in 0.117857% and 0.117857% and table 4 for calculating expansion rate K
Expansion rate 0.11866% compares, almost the same.
Table 5
By the expansion rate data and middle cardiac stress (CT), surface stress after chemical strengthening 0h, 2h, 4h, 5.5h, 8h in table 5
(CS), ion exchange depth (DOL) and t Value Data carry out linear regression fit, obtain expansion rate calculation formula K=
0.0000069 × CT+0.0000003 and K=0.0000069 × CS × DOL/ (t-2DOL)+0.0000003.
By middle cardiac stress (CT), surface stress (CS), ion exchange depth (DOL) and the t value number after chemical strengthening 10h
According to above-mentioned two formula is brought into, calculating expansion rate K is respectively expansion rate actually measured in 0.072% and 0.072% and table 5
0.07356% comparison, it is almost the same.
From above-described embodiment 1~5 as can be seen that the calculation formula of the expansion rate obtained using this method be it is reliable, it is non-
Normal closing to reality situation.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of alumina silicate glass chemical strengthening expansion rate test method, which comprises the following steps:
Chemical strengthening is carried out to alumina silicate glass piece, tests the chemically reinforced glass obtained under the different chemical strengthening times respectively
The size of piece and middle cardiac stress；
When calculating different chemical strengthenings according to the size of the chemically reinforced glass piece and the size of the alumina silicate glass piece
Between under the chemically reinforced glass piece expansion rate；
The expansion rate of the chemically reinforced glass piece under the different chemical strengthening times and middle cardiac stress are carried out linear regression to obtain
To the general formula of alumina silicate glass chemical strengthening expansion rate K, K=a × CT+b, wherein CT is the center of chemically reinforced glass piece
Stress, a and b are the constant that linear regression obtains.
2. alumina silicate glass chemical strengthening expansion rate test method according to claim 1, which is characterized in that described right
Alumina silicate glass piece carries out chemical strengthening, tests the ruler of the chemically reinforced glass piece obtained under the different chemical strengthening times respectively
In the step of very little and middle cardiac stress, testing the chemical strengthening time respectively is T1、T2、T3And T4Chemically reinforced glass piece size
And middle cardiac stress.
3. alumina silicate glass chemical strengthening expansion rate test method according to claim 1, which is characterized in that the T1、
T2、T3And T4Respectively 2h, 4h, 5.5h, 8h.
4. a kind of alumina silicate glass chemical strengthening expansion rate test method, which comprises the following steps:
Chemical strengthening is carried out to alumina silicate glass piece, tests the chemically reinforced glass obtained under the different chemical strengthening times respectively
Size, bearing stress and the stress layer depth of piece；
It is strong that different chemistry are calculated according to the size of the chemically reinforced glass piece and the size of the alumina silicate glass piece
Change the expansion rate of the chemically reinforced glass piece under the time；
By expansion rate, size, bearing stress and the stressor layers of the chemically reinforced glass piece under the different chemical strengthening times
Depth carries out linear regression and obtains the general formula of alumina silicate glass chemical strengthening expansion rate K, and K=a × CS × DOL/ (t-2DOL)+
B, wherein CS is the bearing stress of chemically reinforced glass piece, and DOL is the stress layer depth of chemically reinforced glass piece, and t is chemistry
The thickness of strengthened glass piece, a and b are the constant that linear regression obtains.
5. alumina silicate glass chemical strengthening expansion rate test method according to claim 4, which is characterized in that described right
Alumina silicate glass piece carries out chemical strengthening, tests the ruler of the chemically reinforced glass piece obtained under the different chemical strengthening times respectively
In the step of very little, bearing stress and stress layer depth, testing the chemical strengthening time respectively is T1、T2、T3And T4Chemical strengthening
Size, bearing stress and the stress layer depth of sheet glass.
6. a kind of alumina silicate glass chemical strengthening expansion rate test method, which comprises the following steps:
Chemical strengthening is carried out to alumina silicate glass piece and obtains chemically reinforced glass piece；
The middle cardiac stress of the chemically reinforced glass piece under at least two chemical strengthening times is tested, at least two chemistry are calculated
The expansion rate of the chemically reinforced glass piece under enhanced time, and alumina silicate glass is calculated according to expansion rate calculation formula
It learns and strengthens expansion rate,
The expansion rate calculation formula are as follows: K=a × CT+b, wherein CT be the chemically reinforced glass piece middle cardiac stress, a and
B is the constant being calculated by the expansion rate calculation formula.
7. alumina silicate glass chemical strengthening expansion rate test method according to claim 6, which is characterized in that the meter
In the step of calculating the expansion rate of the chemically reinforced glass piece under at least two chemical strengthening times, the chemical strengthening glass is calculated
The expansion rate of the three-dimensional dimension of glass obtains expansion rate of the average ratio as chemically reinforced glass piece.
8. a kind of alumina silicate glass chemical strengthening expansion rate test method, which comprises the following steps:
Chemical strengthening is carried out to alumina silicate glass piece and obtains chemically reinforced glass piece；
Test size, bearing stress and the stress layer depth of the chemically reinforced glass piece under at least two chemical strengthening times
Degree calculates the expansion rate of the chemically reinforced glass piece under at least two chemical strengthening times, and according to expansion rate calculation formula
The alumina silicate glass chemical strengthening expansion rate is calculated,
The expansion rate calculation formula are as follows: K=a × CS × DOL/ (t-2DOL)+b, wherein CS is the table of chemically reinforced glass piece
Face pressure stress, DOL are the stress layer depth of the chemically reinforced glass piece, and t is the thickness of chemically reinforced glass piece, and a and b are logical
Cross the constant that the expansion rate calculation formula is calculated.
9. alumina silicate glass chemical strengthening expansion rate test method according to claim 8, which is characterized in that the meter
In the step of calculating the expansion rate of the chemically reinforced glass piece under at least two chemical strengthening times, the chemical strengthening glass is calculated
The expansion rate of the three-dimensional dimension of glass piece obtains expansion rate of the average ratio as chemically reinforced glass piece.
10. a kind of preparation method of alumina silicate glass product, which comprises the following steps:
The expansion rate for testing alumina silicate glass, obtains expansion rate calculation formula K=a × CT+b, wherein CT is chemical strengthening glass
The middle cardiac stress of glass, a and b are constant；
According to the original size of alumina silicate glass product, design size and expansion rate calculation formula, alumina silicate glass is calculated
Alumina silicate glass is calculated according to expansion rate calculation formula and design expansion rate in the design expansion rate of the chemical strengthening of product
The default center stress of product；And
Chemical strengthening is carried out to alumina silicate glass product, and monitors the middle cardiac stress of alumina silicate glass, works as alumino-silicate glass
When the middle cardiac stress of glass is equal to the default center stress, stop chemical strengthening.
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