CN110272217B - Vacuum glass sealing method - Google Patents
Vacuum glass sealing method Download PDFInfo
- Publication number
- CN110272217B CN110272217B CN201910452392.8A CN201910452392A CN110272217B CN 110272217 B CN110272217 B CN 110272217B CN 201910452392 A CN201910452392 A CN 201910452392A CN 110272217 B CN110272217 B CN 110272217B
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- China
- Prior art keywords
- sealing
- vacuum glass
- sealing sheet
- vacuum
- heating block
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- 238000007789 sealing Methods 0.000 title claims abstract description 110
- 239000011521 glass Substances 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000010438 heat treatment Methods 0.000 claims abstract description 45
- 229910000679 solder Inorganic materials 0.000 claims abstract description 21
- 238000003466 welding Methods 0.000 claims abstract description 14
- 230000004907 flux Effects 0.000 claims abstract description 13
- 238000002844 melting Methods 0.000 claims abstract description 11
- 230000008018 melting Effects 0.000 claims abstract description 11
- 238000000605 extraction Methods 0.000 claims abstract description 10
- 238000005086 pumping Methods 0.000 claims abstract description 9
- 239000000758 substrate Substances 0.000 claims description 29
- 239000003566 sealing material Substances 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 6
- 238000001465 metallisation Methods 0.000 claims description 5
- 229910017944 Ag—Cu Inorganic materials 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical group [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 229910020816 Sn Pb Inorganic materials 0.000 claims description 3
- 229910020836 Sn-Ag Inorganic materials 0.000 claims description 3
- 229910020830 Sn-Bi Inorganic materials 0.000 claims description 3
- 229910020888 Sn-Cu Inorganic materials 0.000 claims description 3
- 229910020922 Sn-Pb Inorganic materials 0.000 claims description 3
- 229910020935 Sn-Sb Inorganic materials 0.000 claims description 3
- 229910020994 Sn-Zn Inorganic materials 0.000 claims description 3
- 229910020988 Sn—Ag Inorganic materials 0.000 claims description 3
- 229910018731 Sn—Au Inorganic materials 0.000 claims description 3
- 229910018728 Sn—Bi Inorganic materials 0.000 claims description 3
- 229910019204 Sn—Cu Inorganic materials 0.000 claims description 3
- 229910008783 Sn—Pb Inorganic materials 0.000 claims description 3
- 229910008757 Sn—Sb Inorganic materials 0.000 claims description 3
- 229910009069 Sn—Zn Inorganic materials 0.000 claims description 3
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 3
- 229910052797 bismuth Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims description 3
- 229910016334 Bi—In Inorganic materials 0.000 claims description 2
- 229910001128 Sn alloy Inorganic materials 0.000 claims 1
- 239000000956 alloy Substances 0.000 claims 1
- 238000003825 pressing Methods 0.000 abstract 1
- 239000002002 slurry Substances 0.000 description 8
- 238000001816 cooling Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Images
Classifications
-
- 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
- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
- C03C27/06—Joining glass to glass by processes other than fusing
- C03C27/08—Joining glass to glass by processes other than fusing with the aid of intervening metal
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Joining Of Glass To Other Materials (AREA)
Abstract
The invention discloses a vacuum glass sealing method which specifically comprises the following steps: firstly, the method comprises the following steps: carrying out vacuum pumping operation on the vacuum glass; II, secondly: contacting the heating block with the sealing sheet, heating the sealing sheet to a first set temperature, keeping the first set time, and melting the solder; thirdly, the method comprises the following steps: moving away the heating block to separate the heating block and the sealing sheet for a second set time; fourthly, the method comprises the following steps: the heating block contacts the sealing sheet again, the sealing sheet is heated to a second set temperature, the third set time length is kept, and set pressure is applied to the sealing sheet in the heating process; fifthly; and removing the heating block to finish the secondary sealing of the vacuum glass. The invention provides a vacuum glass sealing method, which comprises the steps of heating a sealing sheet for sealing an air extraction opening of vacuum glass twice, and applying pressure to the sealing sheet in the second heating process to discharge bubbles in welding flux in the sealing process. The processing quality and the service life of the vacuum glass are ensured.
Description
Technical Field
The application relates to the technical field of vacuum glass, in particular to a sealing method of vacuum glass.
Background
In the prior art, the vacuum glass shown in fig. 1 generally comprises: the glass substrate sealing structure comprises a first glass substrate 1, a second glass substrate 2, a sealing structure 3 and a step-type pumping hole 4 arranged on one glass substrate; wherein the first glass substrate 1, the second glass substrate plate 2 and the sealing material 3 enclose an inner cavity 5 of the vacuum glass. Air in the inner cavity 5 is exhausted through the air exhaust port 4, and after the vacuum degree of the inner cavity 5 of the vacuum glass reaches the set vacuum degree, the sealing sheet is used for sealing the step-type air exhaust port 4, and finally the vacuum glass is formed. The applicant has the following notice numbers: CN204824619U, the chinese utility model entitled "a vacuum glass sealing device", discloses a vacuum glass sealing device, which proposes to adopt heating block contact heating and apply a certain pressure in the patent to heat the sealing sheet uniformly, to realize uniform melting of the solder and complete sealing; because the welding flux is always in a melting state in the welding process, after the sealing heating block leaves, the sealing sheet can float on the melted welding flux, the sealing sheet can be unsmooth after cooling, and when the heating block rises, the sealing sheet is also easily taken up, so that sealing failure is caused. In addition, a small amount of gas enters the solder in the process of melting the vacuum glass to be cooled and solidified, the air holes continue to stay in the solder after cooling, and a small amount of gas in the air holes enters the inner cavity of the vacuum glass along with the passage of time, so that the vacuum degree of the inner cavity is adversely affected, and the service life of the vacuum glass is affected.
Disclosure of Invention
In order to solve the problem that in the sealing process of the vacuum glass in the prior art, the welding flux of the sealing extraction opening is always in a melting state, and the sealing sheet is in an uneven state after being cooled. In addition, a small amount of gas enters the molten solder during solidification, and then enters the inner cavity of the vacuum glass, so that the vacuum degree of the inner cavity is influenced. Aiming at the problems in the prior art, the invention provides a vacuum glass sealing method, which avoids the problems of unevenness of a sealing sheet after sealing, air holes in welding flux and the like by sealing an air exhaust port twice. The quality of the vacuum glass is greatly improved, and the service life of the vacuum glass is prolonged.
In order to solve the above problems, the technical scheme provided by the invention is as follows:
a vacuum glass sealing method is disclosed, wherein the vacuum glass comprises a first glass substrate, a second glass substrate and a sealing material arranged at the edge opposite position of the first glass substrate and the second glass substrate, an inner cavity is enclosed by the first glass substrate, the second glass substrate and the sealing material, and a step-shaped air suction opening and a sealing sheet for sealing the air suction opening are arranged on the first glass substrate or the second glass substrate; a metallization layer and a welding flux which are used for forming air sealing between the air extraction opening and the sealing sheet are sequentially arranged on the step surface of the step-shaped air extraction opening from bottom to top; the method is characterized in that: the sealing method specifically comprises the following steps:
the method comprises the following steps: carrying out vacuum pumping operation on the vacuum glass to enable the inner cavity of the vacuum glass to reach a set vacuum degree;
step two: contacting a heating block with the sealing sheet, heating the sealing sheet to a first set temperature, and keeping the first set time, wherein heat is transferred to the welding flux through the sealing sheet to melt the welding flux;
step three: moving away the heating block to separate the heating block from the sealing sheet, and keeping the second set time length;
step four: the heating block contacts the sealing sheet again, the sealing sheet is heated to a second set temperature, the third set time length is kept, and set pressure is applied to the sealing sheet in the heating process;
step five; and removing the heating block to finish the sealing of the vacuum glass.
Further, the first set temperature is 250-400 ℃; the first set time period is 5-60 seconds.
Further, the second set time period is 1-50 seconds.
Further, the second set temperature is 250-400 ℃, and the third set time is 5-20 seconds.
Further, the second set temperature is 100-250 ℃, and the third set time period is 3-40 seconds.
Further, the set pressure value range is 10-60N.
Further, the sealing material is a metal sealing material.
Further, the metallization layer is formed from a metal paste by sintering.
Further, the metal slurry is silver slurry, silver-clad copper slurry or silver-clad nickel slurry.
Further, the solder is a low melting point tin-containing solder.
Further, the low melting point tin-containing solder is Sn-Ag-Cu, Sn-Au, Sn-Pb, Sn-Ag, Sn-Cu, Sn-Zn, Sn-Bi, Sn-Sb, Sn-Ag-Cu-Bi, Sn-Ag-Bi-In-Ti, Sn-Ag-Bi-In, Sn-Ag-Cu-In-Ti or Sn-Ag-Bi-Cu-In-Ti alloy.
The invention provides a vacuum glass sealing method, which heats a sealing sheet for sealing an air extraction opening of vacuum glass twice, applies pressure to the sealing sheet in the second heating process, discharges bubbles in welding flux in the sealing process, and ensures that the sealing sheet keeps flat after the welding flux is solidified. The problems that the sealing sheet is taken up when the heating block is lifted, the sealing fails and the like are also avoided. The processing quality and the service life of the vacuum glass are ensured.
Drawings
FIG. 1 is a schematic view of a vacuum glass structure before sealing in the present invention.
FIG. 2 is a schematic view of a vacuum glass structure in the first sealing process of the present invention.
FIG. 3 is a schematic view of the structure of the vacuum glass after the first sealing.
FIG. 4 is a schematic view of a vacuum glass structure in the second sealing process according to the present invention.
FIG. 5 is a schematic view of the vacuum glass structure after the second sealing.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention. The upper and lower limits hereinafter are defined as orientations shown in the drawings.
As shown in fig. 1, the vacuum glass of the present invention comprises: the glass sealing device comprises a first glass substrate 1, a second glass substrate 2, a sealing material 3, an air suction port 4 arranged on one glass substrate and a sealing sheet 8. The sealing material 3 is disposed between the first glass substrate 1 and the second glass substrate plate 2 at a position opposite to the edges thereof. The airtight sealing structure enclosed by the first glass substrate 1, the second glass substrate 2 and the sealing material 3 is an inner cavity 5 of vacuum glass.
As shown in fig. 2, the air pumping port 4 is a step-shaped air pumping port, the step-shaped air pumping port is composed of two concentric circular holes with different radiuses, the radius of the lower circular hole is smaller than that of the upper circular hole, and the whole air pumping port is of an inverted convex structure. The step surface of the air extraction opening 4 is sequentially provided with a metallization layer 6 and a solder 7 from bottom to top. The vacuum device gradually exhausts the air in the inner cavity 5 from the air exhaust port 4, when the vacuum degree of the inner cavity 5 reaches the set vacuum degree, the sealing sheet 8 is used for covering the air exhaust port 4, the sealing sheet 8 is used for sealing the air exhaust port 4, and finally the vacuum glass is formed.
The sealing method used in the invention comprises two sealing steps: a first seal and a second seal. As shown in fig. 2 and 3, the first sealing includes the following steps:
firstly, vacuum-pumping operation is carried out on the vacuum glass, so that the inner cavity of the vacuum glass reaches a set vacuum degree.
And secondly, heating the sealing sheet 8 by using the heating block 10, and keeping the heating block 10 to heat the sealing sheet 8 for a first set time after the first set temperature is reached. The heat of the heating block 10 will be transferred to the solder 7 through the sealing sheet 8 and melt it. Preferably, the first set temperature is 270-; the first set time period is 25-40 seconds.
And thirdly, moving the heating block 10 away, and stopping heating the sealing sheet 8 for a second set time period, wherein the second set time period is preferably 8-20 seconds. At this time, the solder 7 is lowered in temperature and partially solidified.
As shown in fig. 4 and 5, the second sealing includes the following steps:
fourthly, the heating block 10 contacts the sealing sheet 8 again and heats the sealing sheet 8, and after the second set temperature is reached, the heating block 10 keeps heating the sealing sheet 8 for a third set time. Meanwhile, a set pressure is applied to the sealing sheet 8 through a heating block 10 or other devices; preferably, the second set temperature is 150-200 ℃, the third set time is 10-25 seconds or the second heating temperature is 270-290 ℃, the heating time is 8-10 seconds, and the set pressure is 20-40N.
And fifthly, removing the heating block to finish the secondary sealing of the vacuum glass.
In the second sealing process, the heating block 10 does not completely melt the solder 7 at the temperature of heating the sealing sheet 8, and only softens the solder 7, and meanwhile, the sealing sheet 8 is pressurized in the heating process, so that the air entering the sealing sheet 7 when the solder 7 is melted can be discharged, and air bubbles are prevented from existing inside the sealing sheet after the solder 7 is solidified.
In the present invention, the sealing member 3 is a metal sealing member. The metallization layer 6 is formed from a metal paste by sintering. The metal slurry is silver slurry, silver-clad copper slurry or silver-clad nickel slurry. The solder 7 is a low melting point tin-containing solder. Preferably, the low melting point tin-containing solder is Sn-Ag-Cu, Sn-Au, Sn-Pb, Sn-Ag, Sn-Cu, Sn-Zn, Sn-Bi, Sn-Sb, Sn-Ag-Cu-Bi, Sn-Ag-Bi-In-Ti, Sn-Ag-Bi-In-In, Sn-Ag-Cu-In-Ti or Sn-Ag-Bi-Cu-In-Ti alloy.
The foregoing is a preferred embodiment of the present invention, and it should be noted that it would be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the principles of the invention, and such modifications and enhancements are also considered to be within the scope of the invention.
Claims (8)
1. A vacuum glass sealing method is disclosed, wherein the vacuum glass comprises a first glass substrate, a second glass substrate, a sealing material arranged at the edge opposite position of the first glass substrate and the second glass substrate, an inner cavity enclosed by the first glass substrate, the second glass substrate and the sealing material, a step-shaped air extraction opening arranged on the first glass substrate or the second glass substrate and a sealing sheet for sealing the air extraction opening; a metallization layer and a welding flux which are used for forming air sealing between the air extraction opening and the sealing sheet are sequentially arranged on the step surface of the step-shaped air extraction opening from bottom to top; the method is characterized in that: the sealing method specifically comprises the following steps:
the method comprises the following steps: carrying out vacuum pumping operation on the vacuum glass to be sealed to enable the inner cavity of the vacuum glass to be sealed to reach a set vacuum degree;
step two: contacting a heating block with the sealing sheet, heating the sealing sheet to a first set temperature, and keeping the first set time, wherein heat is transferred to the welding flux through the sealing sheet to melt the welding flux; the first set temperature is 250-400 ℃; the first set time is 5-60 seconds;
step three: moving away the heating block to separate the heating block from the sealing sheet, and keeping the second set time length; the second set time is 1-50 seconds;
step four: the heating block contacts the sealing sheet again, the sealing sheet is heated to a second set temperature, the third set time length is kept, and set pressure is applied to the sealing sheet in the heating process; the third set time is 5-20 seconds when the second set temperature is 250-400 ℃; or when the second set temperature is 100-250 ℃, the third set time is 3-40 seconds;
step five; and removing the heating block to finish the sealing of the vacuum glass.
2. The vacuum glass sealing method according to claim 1, wherein the set pressure is 10N to 60N.
3. The vacuum glass sealing method according to claim 1, wherein the sealing material is a metal sealing material.
4. A method of sealing vacuum glass according to claim 3, wherein the metallic sealing material is: a tin alloy material.
5. A vacuum glass sealing method according to claim 1, wherein the metallized layer is formed from a metal paste by sintering.
6. The vacuum glass sealing method according to claim 5, wherein the metal paste is silver paste, silver-clad copper paste or silver-clad nickel paste.
7. The vacuum glass sealing method according to claim 1, wherein the solder is a low melting point tin-containing solder.
8. The vacuum glass sealing method according to claim 7, wherein the low melting point tin-containing solder is Sn-Ag-Cu, Sn-Au, Sn-Pb, Sn-Ag, Sn-Cu, Sn-Zn, Sn-Bi, Sn-Sb, Sn-Ag-Cu-Bi, Sn-Ag-Bi-In-Ti, Sn-Ag-Bi-In, Sn-Ag-Cu-In-Ti, or Sn-Ag-Bi-Cu-In-Ti alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910452392.8A CN110272217B (en) | 2019-05-28 | 2019-05-28 | Vacuum glass sealing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910452392.8A CN110272217B (en) | 2019-05-28 | 2019-05-28 | Vacuum glass sealing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110272217A CN110272217A (en) | 2019-09-24 |
| CN110272217B true CN110272217B (en) | 2021-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910452392.8A Active CN110272217B (en) | 2019-05-28 | 2019-05-28 | Vacuum glass sealing method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002187743A (en) * | 2000-12-21 | 2002-07-05 | Nippon Sheet Glass Co Ltd | Method of sealing glass hole |
| CN1676481A (en) * | 2004-04-01 | 2005-10-05 | 唐健正 | vacuum glass edge heating method and vacuum glass made thereby |
| CN102079620A (en) * | 2009-11-27 | 2011-06-01 | 洛阳兰迪玻璃机器有限公司 | Closing method, closing structure and closing device for vacuum glass pumping hole |
| CN104003628A (en) * | 2013-02-26 | 2014-08-27 | 中国建材检验认证集团股份有限公司 | Vacuum glass with metal edge-sealing structure and making method thereof |
| CN204298258U (en) * | 2014-12-19 | 2015-04-29 | 洛阳兰迪玻璃机器股份有限公司 | The sealing structure of vacuum glass pumping hole |
| CN204824619U (en) * | 2015-06-12 | 2015-12-02 | 洛阳兰迪玻璃机器股份有限公司 | Vacuum glass closing device |
-
2019
- 2019-05-28 CN CN201910452392.8A patent/CN110272217B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002187743A (en) * | 2000-12-21 | 2002-07-05 | Nippon Sheet Glass Co Ltd | Method of sealing glass hole |
| CN1676481A (en) * | 2004-04-01 | 2005-10-05 | 唐健正 | vacuum glass edge heating method and vacuum glass made thereby |
| CN102079620A (en) * | 2009-11-27 | 2011-06-01 | 洛阳兰迪玻璃机器有限公司 | Closing method, closing structure and closing device for vacuum glass pumping hole |
| CN104003628A (en) * | 2013-02-26 | 2014-08-27 | 中国建材检验认证集团股份有限公司 | Vacuum glass with metal edge-sealing structure and making method thereof |
| CN204298258U (en) * | 2014-12-19 | 2015-04-29 | 洛阳兰迪玻璃机器股份有限公司 | The sealing structure of vacuum glass pumping hole |
| CN204824619U (en) * | 2015-06-12 | 2015-12-02 | 洛阳兰迪玻璃机器股份有限公司 | Vacuum glass closing device |
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| Publication number | Publication date |
|---|---|
| CN110272217A (en) | 2019-09-24 |
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Effective date of registration: 20230403 Address after: 471000 Building 1, northwest corner of the intersection of Keji Avenue and Zhuge Avenue, Yibin District, Luoyang City, Henan Province Patentee after: Luoyang Landi Vacuum Glass Technology Co.,Ltd. Address before: 471000 north of the intersection of Keji Avenue and Zhuge Avenue, Yibin District, Luoyang City, Henan Province Patentee before: LUOYANG LANDGLASS TECHNOLOGY Co.,Ltd. |
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Address after: 471000 Building 1, northwest corner of the intersection of Keji Avenue and Zhuge Avenue, Yibin District, Luoyang City, Henan Province Patentee after: Luoyang Landi Titanium Metal Vacuum Glass Co.,Ltd. Country or region after: China Address before: 471000 Building 1, northwest corner of the intersection of Keji Avenue and Zhuge Avenue, Yibin District, Luoyang City, Henan Province Patentee before: Luoyang Landi Vacuum Glass Technology Co.,Ltd. Country or region before: China |
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