CN1157268A - Method and mould for forming special-shaped microcrystalline glass product - Google Patents
Method and mould for forming special-shaped microcrystalline glass product Download PDFInfo
- Publication number
- CN1157268A CN1157268A CN 96116551 CN96116551A CN1157268A CN 1157268 A CN1157268 A CN 1157268A CN 96116551 CN96116551 CN 96116551 CN 96116551 A CN96116551 A CN 96116551A CN 1157268 A CN1157268 A CN 1157268A
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- China
- Prior art keywords
- mould
- temperature
- blanket
- shaped product
- bed die
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000011521 glass Substances 0.000 title claims abstract description 19
- 229910008556 Li2O—Al2O3—SiO2 Inorganic materials 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 230000005484 gravity Effects 0.000 claims abstract description 3
- 238000002425 crystallisation Methods 0.000 claims description 13
- 230000008025 crystallization Effects 0.000 claims description 13
- 238000009413 insulation Methods 0.000 claims description 8
- 238000000137 annealing Methods 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 6
- 238000010899 nucleation Methods 0.000 claims description 4
- 230000006911 nucleation Effects 0.000 claims description 4
- 238000003672 processing method Methods 0.000 claims 2
- 238000000465 moulding Methods 0.000 abstract description 12
- 238000007731 hot pressing Methods 0.000 abstract 1
- 239000002241 glass-ceramic Substances 0.000 description 6
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004455 differential thermal analysis Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000006124 Pilkington process Methods 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
The invention relates to a microcrystalline glass product, in particular to Li2O-AL2O3-SiO2A molding process method and a mold for a system special-shaped product of microcrystalline glass. The method comprises the steps of putting a flat uncrystallized blank plate with a certain thickness into a mold, feeding the blank plate into a heating furnace to be heated according to a set temperature schedule, and carrying out hot-pressing secondary molding on the blank plate in the mold by virtue of the gravity of a die head while the blank plate is heated and crystallized. The microcrystalline glass product formed by the invention has uniform and consistent thickness, smooth appearance, accurate size and stable and reliable forming quality.
Description
The present invention relates to crystallized glass article, particularly Li
2O-AL
2O
3-SiO
2A kind of moulding technique and the mould thereof of system glass ceramics special-shaped product.
The forming method of general simple glass goods has float glass process, horizontal sheet process, vertical drawing process, continuous calendering method or the like, and optimum is made dull and stereotyped, also has blowing process, casting and pressing etc., the special-shaped products that suitable moulding is complicated.Yet it is complicated for some shape, dimensional precision is high, and the goods thickness requires the moulding of the crystallized glass article of uniformity, if it is not too suitable to continue to use blowing, cast and the compacting rule of above-mentioned routine, because devitrified glass basis feed liquid material is short, viscosity is big, causes following defective then can make quality product after the aforesaid method moulding crystallization: one, goods gage distortion; Easily produce non-homogeneousization coarse-grain when two, being shaped; Three, be out of shape during crystallization; Four, molded dimension is inaccurate.
The objective of the invention is to be that comparatively complicated, the whole thickness of crystallized glass article, particularly shape requires the Li of uniformity
2O-AL
2O
3-SiO
2The system glass ceramics goods provide that a kind of compact dimensions is accurate, steady quality is reliable, the uniform moulding technique of crystallization and supporting die apparatus.
Have defective in view of above-mentioned with devitrified glass feed liquid straight forming goods, design philosophy of the present invention is to adopt certain thickness smooth non-crystallized devitrified glass blanket, with this blanket heating crystallization, carries out the mold pressing post forming in heating crystallization.Its technical scheme is:
Production technique: A, get Li
2O-AL
2O
3-SiO
2The flat blanket that system is non-crystallized cuts blanket by the goods requirement and to make certain size, puts into mould; B, the mould that will lay blanket are sent into process furnace according to certain temperature schedule heating, in blanket intensification crystallization, make blanket hot-forming in mould by the gravity of die head; C, annealing are come out of the stove.
Two-part is adopted in the preferable moulding crystallization temperature system suggestion in process furnace of above-mentioned devitrified glass blanket, and promptly first temperature rise rate with 3～10 ℃/minute rises to and is higher than 20～40 ℃ of nucleation temperatures; Insulation is 1-4 hour under this temperature; Rise to crystallization temperature with 2～4 ℃/minute speed then, and insulation 1-4 hour under this temperature; With 4～7 ℃/minute rate of temperature fall furnace temperature being reduced to annealing below 60 ℃ subsequently comes out of the stove.
Mould: comprise patrix and bed die, patrix is connected and fixed by template and die head and is integral, and the bed die periphery is equipped with the location column.
Accompanying drawing 1 is the overall structure synoptic diagram of this mould.
When accompanying drawing 2,3 stacks continuously for this mould, two adjacent bed die two dimensional structure synoptic diagram.
As shown in drawings, top plate 1 closely is connected to become patrix with die head 4 by screw 3, also offers the connection screw 2 of mould unloading shadoof on the top plate 1; Base plate 8 has two kinds, and its size shape structure is consistent, and the gap slot of just being offered on the two periphery 10 and screw 11 be mutual dislocation just in time; Location column 5 plays position-limiting action to patrix on the one hand, the aspect plays the connection supporting role when mould stacks in addition, its lower end is shaped on screw thread 7, can be connected with the screw 11 on lower floor's bed die in stacking, 6 of the bayonet joint of upper end insert in the gap slot 10 of upper strata bed die, external phase is folded successively to rely on location column 5 to make mould like this, to make full use of the volume of process furnace burner hearth.
The moulding of the special-shaped glass-ceramic panel of embodiment 1. electromagnetic stoves.
The bed die 8 of mould is placed on the special-purpose flat bogie, then the smooth qualified Li of tailoring
2O-AL
2O
3-SiO
2System glass ceramics blanket 9 (this devitrified glass differential thermal analysis, its nucleation temperature is 640 ℃, crystallization temperature is 800 ℃) be positioned on the bed die 8, patrix then is positioned on the blanket 9, notes making the gap of respectively locating between the column 5 on blanket and patrix and the bed die to keep evenly during placement as far as possible; Thereafter, in each column 5 upper end, location, cooperating of the gap slot 10 by bayonet joint 6 and bed die installed and placed second layer bed die, blanket and patrix, and like this one overlap installation folds mutually, until the height that reaches the burner hearth permission; Push away dolly and enter burner hearth, fasten fire door, temperature schedule is in accordance with regulations heat-treated.Concrete heat-processed is: elder generation rises to 680 ℃ with 3 ℃/minute temperature rise rate, and insulation is 2.5 hours under this temperature; Rise to 800 ℃ with 2 ℃/minute speed then, and insulation 1.5 hours under this temperature; With 4 ℃/minute rate of temperature fall furnace temperature being reduced to annealing below 60 ℃ subsequently comes out of the stove.With the screw 2 of mould unloading shadoof screw-in top plate, take down patrix, take out moulding product.
After testing, accurate, the thickness uniformity of finished product size; Outward appearance is bright and clean; Linear expansivity is 16 * 10
-7/ ℃, heatproof vibration (not ftractureing) is 400 ℃, folding strength 〉=140N/m
2
Adopt Li
2O-AL
2O
3-SiO
2The system glass ceramics blanket, its nucleation temperature of differential thermal analysis is 720 ℃, crystallization temperature is 850 ℃.Molding process is identical with embodiment 1, and its concrete heat-processed is: elder generation rises to 760 ℃ with 10 ℃/minute temperature rise rate; Insulation is 2 hours under this temperature; Heat up 850 ℃ with 4 ℃/minute speed then, and insulation 2 hours under this temperature, with 7 ℃/minute rate of temperature fall furnace temperature is reduced to annealing below 60 ℃ subsequently and come out of the stove.
After testing, the finished product size is accurate, the thickness uniformity, the outward appearance clear transparent, and linear expansivity is 8 * 10
-7/ ℃, heatproof vibration (not ftractureing) is 600 ℃.
Claims (5)
1, a kind of processing method of nucleated glass special-shaped product shaping is characterized in that:
A, get Li
2O-AL
2O
3-SiO
2The flat blanket that system is non-crystallized is tailored into certain size to blanket by the goods requirement, puts into mould;
B, the mould that will lay blanket are sent into process furnace according to certain temperature schedule heating, in blanket intensification crystallization, make blanket hot-forming in mould by the gravity of die head;
C, annealing are come out of the stove.
2, press the processing method of the described nucleated glass special-shaped product shaping of claim 1, it is characterized in that blanket crystallization and hot-forming concrete heat-processed in process furnace are: rise to 3～10 ℃/minute temperature rise rate earlier and be higher than 20～40 ℃ of nucleation temperatures, insulation is 1-4 hour under this temperature; Rise to crystallization temperature with 2～4 ℃/minute speed then, and insulation 1-4 hour under this temperature; With 4～7 ℃/minute rate of temperature fall furnace temperature being reduced to annealing below 60 ℃ subsequently comes out of the stove.
3, a kind of nucleated glass special-shaped product shaping mould has patrix, bed die, it is characterized in that patrix is connected with die head (4) by template (1) to be combined into one, and the bed die periphery is equipped with location column (5).
4,, it is characterized in that offering on the patrix template (1) the connection screw (2) of mould unloading shadoof by the described nucleated glass special-shaped product shaping mould of claim 3.
5, by claim 3 or 4 described nucleated glass special-shaped product shaping moulds, it is characterized in that it is to stack mould continuously, its column (5) lower end, location is shaped on screw thread (7), with stack in lower floor's bed die on screw (11) be connected, the bayonet joint of upper end (6) then inserts in the gap slot (10) of upper strata bed die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96116551 CN1157268A (en) | 1996-10-20 | 1996-10-20 | Method and mould for forming special-shaped microcrystalline glass product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96116551 CN1157268A (en) | 1996-10-20 | 1996-10-20 | Method and mould for forming special-shaped microcrystalline glass product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1157268A true CN1157268A (en) | 1997-08-20 |
Family
ID=5123650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96116551 Pending CN1157268A (en) | 1996-10-20 | 1996-10-20 | Method and mould for forming special-shaped microcrystalline glass product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1157268A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100344560C (en) * | 2004-12-15 | 2007-10-24 | 亚洲光学股份有限公司 | Continuous glass molding system |
| CN101462820B (en) * | 2009-01-08 | 2011-02-02 | 广东科迪微晶玻璃实业有限公司 | Low-expansion glass-ceramics moulding method for lithium-aluminum-silicon system |
| CN102515474A (en) * | 2011-11-22 | 2012-06-27 | 常熟市精工模具制造有限公司 | Mould of glassware cover |
| CN102883856A (en) * | 2010-05-03 | 2013-01-16 | 康宁股份有限公司 | Method for making a 3D glass article |
| CN104097441A (en) * | 2014-08-04 | 2014-10-15 | 廖展伦 | Glass decoration material, processing method and processing device |
| CN107814478A (en) * | 2016-09-14 | 2018-03-20 | 旭硝子株式会社 | The manufacture method and curved glass article of curved glass article |
| CN112041279A (en) * | 2018-11-05 | 2020-12-04 | 康宁公司 | Method for manufacturing three-dimensional glass ceramic product |
-
1996
- 1996-10-20 CN CN 96116551 patent/CN1157268A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100344560C (en) * | 2004-12-15 | 2007-10-24 | 亚洲光学股份有限公司 | Continuous glass molding system |
| CN101462820B (en) * | 2009-01-08 | 2011-02-02 | 广东科迪微晶玻璃实业有限公司 | Low-expansion glass-ceramics moulding method for lithium-aluminum-silicon system |
| CN102883856A (en) * | 2010-05-03 | 2013-01-16 | 康宁股份有限公司 | Method for making a 3D glass article |
| CN102883856B (en) * | 2010-05-03 | 2016-05-25 | 康宁股份有限公司 | Manufacture the method for 3D glassware |
| CN102515474A (en) * | 2011-11-22 | 2012-06-27 | 常熟市精工模具制造有限公司 | Mould of glassware cover |
| CN102515474B (en) * | 2011-11-22 | 2014-02-19 | 常熟市精工模具制造有限公司 | Mould of glassware cover |
| CN104097441A (en) * | 2014-08-04 | 2014-10-15 | 廖展伦 | Glass decoration material, processing method and processing device |
| WO2016019828A1 (en) * | 2014-08-04 | 2016-02-11 | 廖展伦 | Glass decoration material, machining method and machining device |
| CN104097441B (en) * | 2014-08-04 | 2017-05-17 | 廖展伦 | Glass decoration material, processing method and processing device |
| CN107814478A (en) * | 2016-09-14 | 2018-03-20 | 旭硝子株式会社 | The manufacture method and curved glass article of curved glass article |
| CN112041279A (en) * | 2018-11-05 | 2020-12-04 | 康宁公司 | Method for manufacturing three-dimensional glass ceramic product |
| US11554976B2 (en) | 2018-11-05 | 2023-01-17 | Corning Incorporated | Methods of making three dimensional glass ceramic articles |
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |