CN107021613A - A kind of method for the chemical tempering cover-plate glass that can reduce fraction defective - Google Patents
A kind of method for the chemical tempering cover-plate glass that can reduce fraction defective Download PDFInfo
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- CN107021613A CN107021613A CN201710409207.8A CN201710409207A CN107021613A CN 107021613 A CN107021613 A CN 107021613A CN 201710409207 A CN201710409207 A CN 201710409207A CN 107021613 A CN107021613 A CN 107021613A
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- 239000005357 flat glass Substances 0.000 title claims abstract description 120
- 238000005496 tempering Methods 0.000 title claims abstract description 94
- 239000000126 substance Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000002950 deficient Effects 0.000 title claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 37
- 238000010791 quenching Methods 0.000 claims abstract description 33
- 230000000171 quenching effect Effects 0.000 claims abstract description 33
- 230000004087 circulation Effects 0.000 claims abstract description 30
- 150000003839 salts Chemical class 0.000 claims abstract description 29
- 238000010792 warming Methods 0.000 claims abstract description 17
- 239000011521 glass Substances 0.000 claims description 17
- 230000007547 defect Effects 0.000 claims description 9
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 8
- 238000000137 annealing Methods 0.000 claims description 7
- 238000007688 edging Methods 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 235000010333 potassium nitrate Nutrition 0.000 claims description 4
- 239000004323 potassium nitrate Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 5
- 230000000052 comparative effect Effects 0.000 description 11
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- JAWMENYCRQKKJY-UHFFFAOYSA-N [3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-ylmethyl)-1-oxa-2,8-diazaspiro[4.5]dec-2-en-8-yl]-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]methanone Chemical compound N1N=NC=2CN(CCC=21)CC1=NOC2(C1)CCN(CC2)C(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F JAWMENYCRQKKJY-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003223 protective agent Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/02—Tempering or quenching glass products using liquid
- C03B27/03—Tempering or quenching glass products using liquid the liquid being a molten metal or a molten salt
-
- 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 kind of method for the chemical tempering cover-plate glass that can reduce fraction defective, this method includes cover-plate glass being preheated to preheating temperature T2, then puts into tempering liquid fused salt；Wherein, the measuring method that this method is also included as follows, which is determined, obtains preheating temperature T2：(1) multiple samples of the cover-plate glass, are warming up to G DEG C, and constant temperature is kept 5 15 minutes in the temperature, by the cover-plate glass of constant temperature with L DEG C of quenching liquid quenching；(2), the G ' for circulating the cover-plate glass sample not burst after quenching with a new round substitutes the operation of the G circulating repetitions progress step (1) of last round of circulation；(3), circulation carries out step (2) until whole cover-plate glass samples are burst；Then calculate and obtain preheating temperature T2.Chemical tempering is carried out after the preheating of above-mentioned preheating temperature, percentage of damage during cover-plate glass tempering can be made to be less than 2%, fraction defective is significantly reduced, obtains more preferable productivity effect.
Description
Technical field
The present invention relates to glass tempering technology, in particular it relates to which a kind of can reduce the chemical tempering cover plate glass of fraction defective
The method of glass.
Background technology
The chemical tempering of cover-plate glass is put into glass in 400-500 DEG C of fused salt liquid, using in basic ion volume
Difference by ion exchange formation glass bearing stress, during chemical tempering, normal temperature put into fused salt glass, according to
According to the different percentages of damage of kind and size, edge treated more than 40%, cause tempering bad, and pass through the glass of preheating due to pre-
Hot temperature is improper cause to cause before and after tempering it is bad also 10% or so.
The content of the invention
It is an object of the invention to provide a kind of method for the chemical tempering cover-plate glass that can reduce fraction defective, cover-plate glass
Chemical tempering is carried out after being preheated under the preheating temperature determined by the method for the present invention, the percentage of damage of glass can be controlled to be less than
2%, tempering fraction defective is effectively reduced, productivity effect is improved.
To achieve these goals, the present invention provides a kind of side for the chemical tempering cover-plate glass that can reduce fraction defective
Method, this method includes cover-plate glass being preheated to preheating temperature T2, then puts into tempering liquid fused salt；Wherein, this method is also wrapped
The measuring method included as follows, which is determined, obtains preheating temperature T2：(1), multiple samples of the cover-plate glass are warming up to
G DEG C, and keep constant temperature 5-15 minutes in the temperature, G span is 150-350 DEG C；By the cover-plate glass of constant temperature with L DEG C
Quenching liquid quenching, L span is 15-30 DEG C；(2), by the cover-plate glass sample not burst after quenching with a new round
The G ' of circulation substitutes the operation of the G circulating repetitions progress step (1) of last round of circulation, G '=G+ Δ G, and Δ G span is
8-12；(3), circulation carries out step (2) until whole cover-plate glass samples are burst；Cycle-index is designated as n, is carried out every time in circulation
The cover-plate glass piece sample number burst after quenching is designated as S1, S2, S3 successively ... and Sn, and G and L differences be successively in circulation every time
It is designated as Δ T1, Δ T2, Δ T3 ... and Δ Tn, T0 occurs the G, Tn in the circulation that bursts for multiple samples of cover-plate glass first
G in the circulation just all burst for multiple samples of cover-plate glass；Cover-plate glass is calculated by following formula 1 to formula 3
Learn preheating temperature T2 during tempering：
T1=[(S1 × Δ T1)+(S2 × Δ T2)+... (Sn × Δ Tn)] ÷ (S1+S2+ ... Sn) formula 1；
T3=T1- [(Tn-T0)/2] × 0.9 formula 2；
T2=T4-T3 formulas 3；
Wherein, T4 is the temperature of tempering liquid fused salt.
Alternatively, the sample of the cover-plate glass is carried in specimen holder, then will carries the cover-plate glass
The specimen holder of sample, which is put into baking oven, to be heated up and constant temperature.
Alternatively, the specimen holder separates bracket, the sample of the cover-plate glass for the perpendicular type or side type of stainless steel
Separated with setting or edge-on mode and be positioned in specimen holder.
Alternatively, the quenching liquid is water.
Alternatively, the sample of the cover-plate glass before step (1) operation is carried out has carried out edging, fallen successively
Angle and annealing.
Alternatively, the size of the sample of the multiple cover-plate glass before step (1) operation is carried out is identical with thickness.
Alternatively, the sample of the cover-plate glass before step (1) operation is carried out is without founding defect.
Alternatively, the defect of founding includes bubble and striped.
Alternatively, the tempering liquid fused salt is potassium nitrate liquid fused salt.
By above-mentioned technical proposal, heat resistance measurement can be carried out to the cover-plate glass of batch, and then obtain chemical tempering
When suitable preheating temperature numerical value, percentage of damage when can make cover-plate glass chemical tempering is less than 2%, significantly reduces bad
Rate, results in more preferable productivity effect.
Other features and advantages of the present invention will be described in detail in subsequent embodiment part.
Embodiment
The embodiment to the present invention is described in detail below.It should be appreciated that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to limit the invention.
The present invention provides a kind of method for the chemical tempering cover-plate glass that can reduce fraction defective, and this method is included cover plate
Then preheating glass is put into tempering liquid fused salt to preheating temperature T2；Wherein, this method also includes measurement as follows
Method determines and obtains preheating temperature T2：(1) multiple samples of the cover-plate glass, are warming up to G DEG C, and keep permanent in the temperature
Warm 5-15 minutes, G span is 150-350 DEG C；By the cover-plate glass of constant temperature L DEG C of quenching liquid quenching, L value model
Enclose for 15-30 DEG C；(2), the G ' for circulating the cover-plate glass sample not burst after quenching with a new round substitutes last round of follow
The G circulating repetitions of ring carry out the operation of step (1), and G '=G+ Δ G, Δ G span is 8-12；(3), circulation carries out step
(2) until whole cover-plate glass samples are burst；Cycle-index is designated as n, carries out the cover-plate glass burst after quenching in circulation every time
Piece sample number is designated as S1, S2, S3 successively ... and Sn, and G is designated as Δ T1, Δ T2, Δ successively with L differences in circulation every time
T3 ... and Δ Tn, T0 occur the G in the circulation that bursts for multiple samples of cover-plate glass first, and Tn is multiple for cover-plate glass
G in the circulation that sample is just all burst；Preheating temperature during cover-plate glass chemical tempering is calculated by following formula 1 to formula 3
Spend T2：
T1=[(S1 × Δ T1)+(S2 × Δ T2)+... (Sn × Δ Tn)] ÷ (S1+S2+ ... Sn) formula 1；
T3=T1- [(Tn-T0)/2] × 0.9 formula 2；
T2=T4-T3 formulas 3；
Wherein, T4 is the temperature of tempering liquid fused salt.
The temperature value T1 calculated by above-mentioned formula 1 represents the heat resistance of cover-plate glass sample, can by above-mentioned formula 2
To calculate difference during chemical tempering between suitable preheating temperature and tempering temperature, i.e. temperature T3, chemistry is often carried out
Tempering temperature during tempering is known, therefore, is subtracted each other by tempering temperature and temperature T3 when can calculate chemical tempering
Suitable preheating temperature value T2.
According to the present invention it is possible to which the sample of the cover-plate glass is carried in specimen holder, the lid then will be carried
The specimen holder of the sample of glass sheet, which is put into baking oven, to be heated up and constant temperature；In quenching, the cover plate glass can will be carried
The specimen holder of glass sample, which is put into quenching liquid, carries out quenching.
The specimen holder can be from the good material of stereotyped, heat resistance.
According to the present invention, the specimen holder can separate bracket, the cover plate glass for the perpendicular type or side type of stainless steel
The sample of glass can be separated with setting or edge-on mode to be positioned in specimen holder.
The specimen holder of stainless steel is stereotyped, there is preferable heat resistance, and perpendicular type or side type, which separate bracket, can make cover plate
Glass specimen is to erect or edge-on mode separates and is positioned in specimen holder, and such modes of emplacement makes together to be put into baking oven progress
The cover-plate glass sample of heating can be independently heated, and during quenching, every cover-plate glass can contact quenching simultaneously
The cover-plate glass piece sample number burst in liquid, and then each circulation of accurate acquisition after quenching, and obtain accurate T1 temperature number
Value, and then preheating temperature value T2 when accurate cover-plate glass sample carries out chemical tempering can be obtained.
According to the present invention, the quenching liquid can be water.
According to the present invention, the sample of the cover-plate glass before step (1) operation is carried out can be carried out successively
Edging, chamfering and annealing.
Cover-plate glass is often that have passed through to carry out chemical tempering after above-mentioned edging, chamfering and annealing again, therefore right
Before the chemical tempering preheating temperature of cover-plate glass sample is measured, edging, chamfering and annealing are carried out to cover-plate glass,
Then the measurement of preheating temperature is carried out again, can to measure, calculate the change that obtained preheating temperature is more suitable for cover-plate glass
Learn tempering.
In accordance with the present invention it is preferred that, the size of the sample of the multiple cover-plate glass before step (1) operation is carried out
It is identical with thickness.
In accordance with the present invention it is preferred that, the sample of the cover-plate glass before step (1) operation is carried out is scarce without founding
Fall into.
According to the present invention, the defect of founding can include bubble and striped.The defect of founding can also include other
Cover-plate glass in the defect kind that can exist.
In accordance with the present invention it is preferred that, the quantity of the sample of cover-plate glass described in step (1) is more than 50.
According to the present invention, the tempering liquid fused salt can be potassium nitrate liquid fused salt, while can contain a small amount of catalyst
Or protective agent.Constant temperature in the Muffle furnace heated up in advance is may remain in after cover-plate glass chemical tempering and drips salt, then with Muffle furnace
Cooling, and then can effectively keep the tempering performance of cover-plate glass.
Preheating temperature when obtaining T1, T3 by method measurement, the calculating of the present invention and then obtaining chemical tempering, then makes
Cover-plate glass carries out chemical tempering after preheating temperature preheating, can effectively reduce tempering fraction defective, reduce pre- thermal energy consumption, and
And tempering efficiency can be improved.
The present invention is further described by the following examples.
The cover-plate glass size used in embodiment and comparative example is 70 × 70 × 0.7mm, and tempering temperature during tempering is equal
For 430 DEG C, the tempering time is 2 hours, and tempering liquid is potassium nitrate liquid fused salt.
Embodiment 1
(1), by size it is identical with thickness, without founding defect and have passed through the cover plate glass of edging, chamfering and annealing
84 samples of glass are carried in perpendicular type stainless steel specimen holder, and cover-plate glass, which is separated with to erect mode, to be positioned on specimen holder, so
The specimen holder for carrying the cover-plate glass sample is put into baking oven afterwards and is warming up to 240 DEG C, and constant temperature 10 is kept in the temperature
Minute；The cover-plate glass of constant temperature is cold with 25 DEG C of water quenching；
(2) the cover-plate glass sample not burst after quenching, is warming up to 248 DEG C, and constant temperature 10 is kept in the temperature
Minute；
(3), the cover-plate glass sample not burst after quenching is warming up to higher than 8 DEG C of last time thermostat temperature again, followed
Ring carries out step (2) until whole cover-plate glass samples are burst, and the temperature heated up every time is above 8 DEG C of last time thermostat temperature；
Cycle-index is designated as 6, carried out every time in circulation the cover-plate glass piece sample number that bursts after quenching be designated as successively S1,
S2, S3 ... and S6, the temperature of constant temperature is designated as Δ T1, Δ T2, Δ T3 ... and Δ T6 successively with 25 DEG C of differences in circulation every time,
T0 occurs the thermostat temperature in the circulation that bursts for multiple samples of cover-plate glass first, and T6 is firm for multiple samples of cover-plate glass
Thermostat temperature in the good circulation all burst；
Preheating temperature T2 during cover-plate glass chemical tempering is calculated by following formula 1 to formula 3：
T1=[(S1 × Δ T1)+(S2 × Δ T2)+... (S6 × Δ T6)] ÷ (S1+S2+ ... S6) formula 1；
T3=T1- [(T6-T0)/2] × 0.9 formula 2；
T2=T4-T3 formulas 3；
Wherein, T4 is the temperature of tempering liquid fused salt, 430 DEG C.
100 cover-plate glass are preheated to T2 DEG C, then put into temperature to carry out chemistry in 430 DEG C of tempering liquid fused salt
Tempering, the quantity of broken cover-plate glass during statistics tempering.
The data such as the numerical value of the S1-S6 in the present embodiment, T1, T3 and the T2 calculated are shown in Table 1.The lid crushed during tempering
The data such as the quantity of glass sheet are shown in Table 3.
Embodiment 2
(1), by size it is identical with thickness, without founding defect and have passed through the cover plate glass of edging, chamfering and annealing
100 samples of glass are carried on side type stainless steel and separated in bracket, and cover-plate glass is separated in edge-on mode to be positioned on specimen holder,
Then the specimen holder for carrying the cover-plate glass sample is put into baking oven and is warming up to 180 DEG C, and constant temperature is kept in the temperature
15 minutes；The cover-plate glass of constant temperature is cold with 28 DEG C of water quenching；
(2) the cover-plate glass sample not burst after quenching, is warming up to 190 DEG C, and constant temperature 15 is kept in the temperature
Minute；
(3), the cover-plate glass sample not burst after quenching is warming up to higher than 10 DEG C of last time thermostat temperature again, followed
Ring carries out step (2) until whole cover-plate glass samples are burst, and the temperature heated up every time is above 10 DEG C of last time thermostat temperature；
The significant cyclic number for having cover-plate glass to burst after quenching is designated as 6, is burst after carrying out quenching in circulation every time
Cover-plate glass piece sample number be designated as S1, S2, S3 successively ... and S6, every time in circulation the temperature of constant temperature and 28 DEG C of differences according to
Secondary to be designated as Δ T1, Δ T2, Δ T3 ... and Δ T6, T0 occurs the perseverance in the circulation that bursts for multiple samples of cover-plate glass first
Temperature, the thermostat temperature in the circulation that T6 just all bursts for multiple samples of cover-plate glass；
Preheating temperature T2 during cover-plate glass chemical tempering is calculated by following formula 1 to formula 3：
T1=[(S1 × Δ T1)+(S2 × Δ T2)+... (S6 × Δ T6)] ÷ (S1+S2+ ... S6) formula 1；
T3=T1- [(T6-T0)/2] × 0.9 formula 2；
T2=T4-T3 formulas 3；
Wherein, T4 is the temperature of tempering liquid fused salt, 430 DEG C.
100 cover-plate glass are preheated to T2 DEG C, then put into temperature to carry out chemistry in 430 DEG C of tempering liquid fused salt
Tempering, the quantity of broken cover-plate glass during statistics tempering.
The data such as S1-S6 numerical value in the present embodiment, T1, T3 and the T2 calculated are shown in Table 2.The cover plate crushed during tempering
The data such as the quantity of glass are shown in Table 3.
Comparative example 1
28 DEG C of 100 cover-plate glass of room temperature are direct plungeed into chemical tempering is carried out in 430 DEG C of tempering liquid fused salt, counted
The quantity of the cover-plate glass crushed during tempering, is shown in Table 3,
Comparative example 2
100 cover-plate glass are warming up in the tempering liquid fused salt for put into after 100 DEG C 430 DEG C and carry out chemical tempering, counted
The quantity of the cover-plate glass crushed during tempering, is shown in Table 3
Comparative example 3
100 cover-plate glass are warming up in the tempering liquid fused salt for put into after 150 DEG C 430 DEG C and carry out chemical tempering, counted
The quantity of the cover-plate glass crushed during tempering, is shown in Table 3
Comparative example 4
100 cover-plate glass are warming up in the tempering liquid fused salt for put into after 190 DEG C 430 DEG C and carry out chemical tempering, counted
The quantity of the cover-plate glass crushed during tempering, is shown in Table 3
Comparative example 5
100 cover-plate glass are warming up in the tempering liquid fused salt for put into after 200 DEG C 430 DEG C and carry out chemical tempering, counted
The quantity of the cover-plate glass crushed during tempering, is shown in Table 3
Comparative example 6
100 cover-plate glass are warming up in the tempering liquid fused salt for put into after 220 DEG C 430 DEG C and carry out chemical tempering, counted
The quantity of the cover-plate glass crushed during tempering, is shown in Table 3
Comparative example 7
100 cover-plate glass are warming up in the tempering liquid fused salt for put into after 240 DEG C 430 DEG C and carry out chemical tempering, counted
The quantity of the cover-plate glass crushed during tempering, is shown in Table 3
Comparative example 8
100 cover-plate glass are warming up in the tempering liquid fused salt for put into after 260 DEG C 430 DEG C and carry out chemical tempering, counted
The quantity of the cover-plate glass crushed during tempering, is shown in Table 3
The data of the embodiment 1 of table 1
The data of the embodiment 2 of table 2
Chemical tempering back shroud glass breaking number in the embodiment 1,2 of table 3 and comparative example 1-8
The temperature difference that can be seen that preheating temperature and tempering temperature by the data of table 1 and table 3 is controlled in embodiment 1,2
When the T3 values calculated are following, percentage of damage is relatively low after chemical tempering, less than 2%, and temperature difference is in the broken of more than the T3
Rate is larger, and percentage of damage is raised with the reduction of preheating temperature, and in 28 DEG C of direct tempering of room temperature, breakage rate is up to
41%.Simultaneously as can be seen that preheating temperature is not that simply the higher the better, embodiment 1 and embodiment 2 have reached breakage rate
Not higher than 2%, too high preheating temperature does not cause tempering effect to improve it can be seen from comparative example 6,7,8, can cause on the contrary
High energy consumption and preheating time are long, therefore, by contrast, and the preheating temperature determined by the method for the present invention can make chemical steel
Change and more preferable tempering effect is obtained with relatively low energy consumption.
The preferred embodiment of the present invention described in detail above, still, the present invention are not limited in above-mentioned embodiment
Detail, in the range of the technology design of the present invention, a variety of simple variants can be carried out to technical scheme, this
A little simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (9)
1. a kind of method for the chemical tempering cover-plate glass that can reduce fraction defective, it is characterised in that this method is included cover plate
Then preheating glass is put into tempering liquid fused salt to preheating temperature T2；Wherein, this method also includes measurement as follows
Method determines and obtains preheating temperature T2：
(1) multiple samples of the cover-plate glass, are warming up to G DEG C, and constant temperature is kept 5-15 minutes in the temperature, G value
Scope is 150-350 DEG C；By the cover-plate glass of constant temperature with L DEG C of quenching liquid quenching, L span is 15-30 DEG C；
(2), the G ' for circulating the cover-plate glass sample not burst after quenching with a new round substitutes the G circulations of last round of circulation
Repeat the operation of step (1), G '=G+ Δ G, Δ G span is 8-12；
(3), circulation carries out step (2) until whole cover-plate glass samples are burst；
Cycle-index is designated as n, carried out every time in circulation the cover-plate glass piece sample number that bursts after quenching be designated as successively S1, S2,
S3 ... and Sn, it is cover-plate glass that G is designated as Δ T1, Δ T2, Δ T3 ... and Δ Tn, T0 successively with L differences in circulation every time
There is the G in the circulation that bursts first in multiple samples, in the circulation that Tn just all bursts for multiple samples of cover-plate glass
G；
Preheating temperature T2 during cover-plate glass chemical tempering is calculated by following formula 1 to formula 3：
T1=[(S1 × Δ T1)+(S2 × Δ T2)+... (Sn × Δ Tn)] ÷ (S1+S2+ ... Sn) formula 1；
T3=T1- [(Tn-T0)/2] × 0.9 formula 2；
T2=T4-T3 formulas 3；
Wherein, T4 is the temperature of tempering liquid fused salt.
2. according to the method described in claim 1, wherein, the sample of the cover-plate glass is carried in specimen holder, then will
The specimen holder for carrying the sample of the cover-plate glass is put into baking oven and heated up and constant temperature.
3. method according to claim 2, wherein, the specimen holder separates support for the perpendicular type or side type of stainless steel
Frame, the sample of the cover-plate glass is to erect or edge-on mode separates and is positioned in specimen holder.
4. according to the method described in claim 1, wherein, the quenching liquid be water.
5. according to the method described in claim 1, wherein, carry out step (1) operation before the cover-plate glass sample
Edging, chamfering and annealing have been carried out successively.
6. method according to claim 5, wherein, carrying out the multiple cover-plate glass before step (1) is operated
The size of sample is identical with thickness.
7. method according to claim 5, wherein, the sample of the cover-plate glass before step (1) operation is carried out
Nothing founds defect.
8. method according to claim 7, wherein, the defect of founding includes bubble and striped.
9. according to the method described in claim 1, wherein, the tempering liquid fused salt be potassium nitrate liquid fused salt.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109502992A (en) * | 2019-01-09 | 2019-03-22 | 江苏铁锚玻璃股份有限公司 | The novel reinforced technique of high lead glass |
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| CN102690049A (en) * | 2011-03-24 | 2012-09-26 | 旭硝子株式会社 | Process for producing chemically strengthened glass substrate for display device |
| CN103588388A (en) * | 2013-11-05 | 2014-02-19 | 中国航空工业集团公司北京航空材料研究院 | Method for reducing chemically strengthened glass strength dispersity through temperature modulation |
| CN104163567A (en) * | 2014-07-31 | 2014-11-26 | 东莞劲胜精密组件股份有限公司 | Production method of tempered glass |
| KR101626282B1 (en) * | 2015-03-27 | 2016-06-02 | 주식회사 도우인시스 | Apparatus for Heat Treatment Before Chemical Strengthening of Glass and Heat Treatment Method Thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109502992A (en) * | 2019-01-09 | 2019-03-22 | 江苏铁锚玻璃股份有限公司 | The novel reinforced technique of high lead glass |
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