CN111302661B - Metal brazing sandwich vacuum heat-insulating glass plate with protective frame rolling support - Google Patents
Metal brazing sandwich vacuum heat-insulating glass plate with protective frame rolling support Download PDFInfo
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- CN111302661B CN111302661B CN201811508414.XA CN201811508414A CN111302661B CN 111302661 B CN111302661 B CN 111302661B CN 201811508414 A CN201811508414 A CN 201811508414A CN 111302661 B CN111302661 B CN 111302661B
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- 239000011521 glass Substances 0.000 title claims abstract description 544
- 238000005219 brazing Methods 0.000 title claims abstract description 350
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 97
- 239000002184 metal Substances 0.000 title claims abstract description 97
- 238000005096 rolling process Methods 0.000 title claims abstract description 51
- 230000001681 protective effect Effects 0.000 title claims abstract description 37
- 239000010935 stainless steel Substances 0.000 claims abstract description 307
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 307
- 239000011229 interlayer Substances 0.000 claims abstract description 63
- 238000010438 heat treatment Methods 0.000 claims abstract description 46
- 238000000034 method Methods 0.000 claims abstract description 45
- 238000007789 sealing Methods 0.000 claims abstract description 38
- 238000005496 tempering Methods 0.000 claims abstract description 24
- 238000003466 welding Methods 0.000 claims abstract description 11
- 229910000833 kovar Inorganic materials 0.000 claims abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 197
- 229910052782 aluminium Inorganic materials 0.000 claims description 196
- 239000010410 layer Substances 0.000 claims description 87
- 229910000838 Al alloy Inorganic materials 0.000 claims description 86
- 229910001128 Sn alloy Inorganic materials 0.000 claims description 65
- 239000005357 flat glass Substances 0.000 claims description 56
- 239000006072 paste Substances 0.000 claims description 56
- 239000005341 toughened glass Substances 0.000 claims description 49
- 239000000463 material Substances 0.000 claims description 45
- 238000002955 isolation Methods 0.000 claims description 36
- 238000001816 cooling Methods 0.000 claims description 31
- 238000004519 manufacturing process Methods 0.000 claims description 29
- 239000005340 laminated glass Substances 0.000 claims description 28
- 229910000679 solder Inorganic materials 0.000 claims description 27
- 239000000945 filler Substances 0.000 claims description 23
- 238000004049 embossing Methods 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 15
- 238000005245 sintering Methods 0.000 claims description 15
- 238000003490 calendering Methods 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 10
- 238000005452 bending Methods 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 9
- 230000000295 complement effect Effects 0.000 claims description 8
- 238000007688 edging Methods 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 7
- 238000005485 electric heating Methods 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 238000004321 preservation Methods 0.000 claims description 7
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 6
- 230000008602 contraction Effects 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 239000004964 aerogel Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 238000011049 filling Methods 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 4
- 239000012774 insulation material Substances 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims description 4
- 238000007639 printing Methods 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 235000019353 potassium silicate Nutrition 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 229910017758 Cu-Si Inorganic materials 0.000 claims description 2
- 229910017931 Cu—Si Inorganic materials 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims description 2
- 239000005338 frosted glass Substances 0.000 claims description 2
- 210000001503 joint Anatomy 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims 3
- 239000004411 aluminium Substances 0.000 claims 2
- 230000004907 flux Effects 0.000 claims 1
- -1 support Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 230000007547 defect Effects 0.000 abstract 1
- 239000005336 safety glass Substances 0.000 abstract 1
- 239000002131 composite material Substances 0.000 description 26
- 230000008901 benefit Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 241001391944 Commicarpus scandens Species 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000012945 sealing adhesive Substances 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000000156 glass melt Substances 0.000 description 1
- MPOKJOWFCMDRKP-UHFFFAOYSA-N gold;hydrate Chemical compound O.[Au] MPOKJOWFCMDRKP-UHFFFAOYSA-N 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000005394 sealing glass Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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
- C03C27/04—Joining glass to metal by means of an interlayer
- C03C27/042—Joining glass to metal by means of an interlayer consisting of a combination of materials selected from glass, glass-ceramic or ceramic material with metals, metal oxides or metal salts
- C03C27/046—Joining glass to metal by means of an interlayer consisting of a combination of materials selected from glass, glass-ceramic or ceramic material with metals, metal oxides or metal salts of metals, metal oxides or metal salts only
-
- 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
- C03C27/04—Joining glass to metal by means of an interlayer
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
- Y02A30/249—Glazing, e.g. vacuum glazing
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
- Y02B80/22—Glazing, e.g. vaccum glazing
Abstract
The vacuum heat-insulating glass plate with the metal brazing interlayer and the rolling support of the protective frame organically combines the glass frame support lattice through the combined action of the metal brazing process and the stainless steel frame by utilizing the difference of metal conductivity, and realizes the vacuumizing between the glass plates by heating and vacuumizing in a vacuum furnace. Thereafter, the edges of the vacuum glass plate are sealed by brazing, and the vacuum glass plate is manufactured by deblocking the getter. The glass overcomes the defect that the prior vacuum glass realizes the vacuum brazing of metal to stainless steel and glass by using metal with kovar property in a brittle low-temperature glass welding mode. The invention solves the problems of the prior vacuum glass, and makes the vacuum glass manufactured into large-area vacuum glass on the premise of not losing the tempering, and the invention has simple process, good brazing sealing effect and long service life, is tempered safety glass, solves the problems of the prior vacuum glass, and is the development direction of the prior vacuum glass.
Description
Technical Field
The invention relates to a functional glass plate manufactured by utilizing a vacuum brazing technology to braze and seal glass and metal. Belonging to the field of glass building materials.
Background
Currently, the main stream of functional glass is hollow glass and vacuum glass.
The insulating performance of the hollow glass is not ideal, and two layers of glass are not mutually supported and can not mutually borrow force, so that the glass has weak wind pressure resistance and is easy to break due to glass resonance. Meanwhile, as the periphery of the hollow glass is not provided with a protective frame, the hollow glass is easy to break due to collision of glass corners in the transportation and installation processes.
The vacuum glass is made up by using two layers of glass plates as sandwich layer, and making them pass through the processes of sealing adhesive, bonding, vacuumizing and sealing. The vacuum glass is transparent functional glass with best energy-saving effect at present, has a series of advantages of light weight, thin thickness, small heat transfer coefficient, good sound insulation effect and the like, and is an ideal energy-saving building material. However, the high-rise building has not been applied on a large scale at present because of the expensive production cost and the fact that the safety requirements of the toughened glass required by the high-rise building cannot be met. Because the sealing adhesive on the periphery of the vacuum glass is bonded into low-temperature glass fusion seal, the manufacturing process, cost, yield, mechanical performance and dimension specification of the vacuum glass are greatly limited, and the tempering treatment of the glass plate is difficult to realize, so that the strength and safety performance of the glass are influenced. Once the glass-melt edge seal damages vacuum leakage due to stress and the like, the whole vacuum glass loses good sound insulation and heat preservation performance.
The above-mentioned disadvantages of the existing vacuum glass are caused by the design structure and the production process thereof. The prior vacuum glass is characterized in that two glass raw sheets are separated by a tiny support point array, the periphery of the glass raw sheets is sealed by a low-melting-point glass material in a melting way, and the vacuum glass is sealed after being exhausted by a glass exhaust tube, so that a vacuum layer with the thickness of only 0.1-0.2mm and the air pressure lower than 0.1Pa is formed. The production of vacuum glass must therefore be accomplished through a number of processes, including: 1) drilling a suction hole, 2) arranging a support, 3) coating glass brazing material, 4) glass lamination, 5) high-temperature edge sealing/suction hole brazing, 6) high-temperature air suction/sealing and 7) getter deblocking.
Applicant [ Liu Weijie ] applies for a low-cost tempered vacuum glass and a manufacturing method thereof, application number CN200910188347.2
The application provides vacuum glass and a manufacturing method thereof, which replace the existing stainless steel support laying process with a micro-convex point support integrated with a glass raw sheet, seal edges by using a low-temperature metal tin brazing technology which does not cause annealing of the tempered glass raw sheet, and integrate the traditional vacuum layer air extraction process and the sealing process into an air extraction and sealing integrated process.
Compared with the existing vacuum glass and the manufacturing process thereof, the application completes vacuumizing and braze welding sealing once, and the safety reaches the use standard of high-rise buildings. However, due to the fact that the sintering gold water needs to be coated, the tin brazing temperature is low, the heating temperature of a vacuum furnace is low, the air release of glass and tin brazing materials is insufficient, the vacuumizing effect is poor, the vacuum degree of a glass vacuum interlayer is low, and the like, the heat preservation and sound insulation performance of the vacuum glass are unsatisfactory.
According to the technical scheme of application number CN200910234678.5 of glass and metal vacuum brazing process of Nanjing university, electroless copper plating metal surface treatment is required to be carried out on the glass surface on the basis of the original process. After the heating system is started, the workpiece is heated to 550 ℃ along with the furnace, the temperature is kept until the vacuum degree in the furnace is 4 multiplied by 10 < -2 > Pa, the temperature of each part of the workpiece is uniform, the brazing furnace is continuously heated to the brazing temperature, the heating is stopped after the brazing furnace is kept for 10 to 30 minutes, the workpiece is slowly cooled along with the furnace, and the furnace discharging temperature of the vacuum glass is below 50 ℃.
The high-temperature edge sealing process is a main reason for the fact that the existing vacuum glass cannot meet the safety standard of high-rise buildings. Standards require that high-rise building glass components must be manufactured using tempered glass. However, because the melting temperature of the existing high-temperature edge sealing glass brazing material exceeds 550 ℃ and is greatly higher than the annealing temperature 388 ℃ of the conventional tempered glass, even if the tempered glass is used for manufacturing vacuum glass, the vacuum glass can be annealed into common glass in the edge sealing process.
Disclosure of Invention
The invention is under the background of the above-mentioned technological technology, through researching the basic theory and producing inspiration from practice, utilize the vacuum electric heat to braze the process to improve the quality of the welded surface of glass, and metal to braze, and guarantee the stainless steel protects the performance of the toughened glass in the frame unchanged. The invention adopts a brand new technical scheme, and two pieces of glass are provided with an isolation support, a closed-loop sealing support frame, a metal brazing profile and a stainless steel protection frame. The sealing is realized by glass, stainless steel frames and metal vacuum electric heating brazing.
The method for manufacturing the vacuum glass has the characteristics of simple operation, high glass strength, safety, low manufacturing cost, high yield, good heat preservation performance, strong functionality, low energy consumption, good perspective effect, convenience for large-scale production and the like, and solves the problems of the existing functional glass. The invention can obtain good metal glass brazing quality, solves the technical problem that the vacuum glass cannot be tempered for a long time, and obtains good economic benefit, environmental benefit and social benefit.
The technical scheme of the invention is realized as follows: the vacuum heat-insulating glass plate with the protective frame rolling support metal brazing interlayer comprises plate glass, a gap isolation support, an aluminum or aluminum alloy brazing frame and a stainless steel frame.
And (3) rolling out two pieces of flat glass with equal sizes and corresponding to each other by using a pressing roller, wherein the two pieces of flat glass are provided with lattice convex point gap isolation supports and frame gap isolation supports, and then the frame gap isolation supports of the two pieces of embossed glass are used for complementarily covering and combining sheets, so that a hollow isolation gap is formed between the two pieces of flat glass. The joint of the gap isolation support sealing surface of the plate glass frame is wrapped and inlaid with a closed-loop aluminum or aluminum alloy solder frame with a mountain-shaped section and at least provided with one joint. The two glass plates forming the interlayer cavity are mutually corresponding in outline shape and size, and annular closed glass plate rolling gap isolation supporting frames with the same height as the protruding points are arranged at the edges of the two glass plates.
Embossing the glass sheet is performed during the production phase of the raw glass sheet or during the tempering phase of the glass sheet.
A long-acting getter is arranged in the interlayer cavity between the two glass plates.
Wrapping the outer side of a closed-loop aluminum or aluminum alloy frame with a 'U' -shaped closed-loop corrugated stainless steel frame with a 'mountain' -shaped section, stretching and sleeving the outer side of the periphery of the hollow laminated glass plate body by utilizing the self elasticity of the closed-loop corrugated stainless steel frame with the 'U' -shaped section, and tightly attaching the outer side of the 'mountain' -shaped closed-loop aluminum or aluminum alloy frame with the 'U' -shaped section and the outer side of the periphery of the hollow laminated glass plate body by utilizing the self resilience of the closed-loop corrugated stainless steel frame. The hollow sandwich glass plate blank with the cross section of mountain shape and connected closed-loop aluminum or aluminum alloy frame and stainless steel closed-loop protection frame is wrapped and inlaid on the edges of the two glass plates.
Or the outer side of the mountain-shaped closed-loop aluminum or aluminum alloy frame outside the periphery of the hollow laminated glass plate body is wrapped with the closed-loop stainless steel frame with the L-shaped cross section and the inverted L-shaped cross section in a buckling sleeve manner, and the closed-loop stainless steel frame is tightly attached to the outer side of the mountain-shaped closed-loop aluminum or aluminum alloy frame with the cross section. The hollow sandwich glass plate blank with the cross section of mountain shape and connected closed-loop aluminum or aluminum alloy frame and stainless steel closed-loop protection frame is wrapped and inlaid on the edges of the two glass plates.
And then, feeding at least one glass plate blank into a vacuum furnace, heating and vacuumizing, and performing electric heating brazing to realize vacuum brazing of the stainless steel frame, aluminum or aluminum alloy and glass, and unsealing the long-acting getter. And (5) cooling the vacuum furnace by ventilation, and then opening the furnace to obtain the metal brazing interlayer vacuum heat-insulating glass plate with the protective frame rolling support.
The aluminum or aluminum alloy brazing filler metal includes Al and the brazing filler metal containing Al includes AI-Si system, al-Cu-Si system and Zn-AI system.
A method for manufacturing a vacuum heat-insulating glass plate with a protective frame, a rolling support metal brazing interlayer comprises a glass plate, an aluminum or aluminum alloy brazing profile, a stainless steel frame and a vacuum brazing furnace. The hollow interlayer is arranged between the two glass plates through the supporting frame, aluminum or aluminum alloy brazing sectional materials are arranged on the sealing covers and the surfaces of the two glass plates and the edges of the glass plates, and the stainless steel frame is wrapped on the aluminum alloy brazing sectional material frame to manufacture a hollow interlayer glass plate blank.
And then horizontally placing at least one hollow sandwich glass plate blank into a vacuum furnace provided with a supporting base, a fixed supporting clamp or a tray, connecting a pressing electric clamp on a stainless steel frame wrapped outside a joint of a mountain-shaped closed-loop aluminum or aluminum alloy frame with the cross section, and connecting another pressing electric clamp on another point at the equidistant position of the stainless steel frame to form two paths of conductive loops with equal resistance of the wrapped glass frame. Closing the vacuum furnace door, and heating and vacuumizing the hollow sandwich glass plate blank in the vacuum furnace. When the set heating temperature, the vacuum degree and the set vacuumizing time below the tempering temperature 388 ℃ of the tempered glass are reached, a low-voltage and high-current heating power supply is connected to the two pressing electric clamps on the blank of the hollow laminated glass plate.
Because the resistance of the aluminum or aluminum alloy frame in the stainless steel frame, the glass, the aluminum or aluminum alloy frame is minimum, the current in the aluminum or aluminum alloy frame is maximum, the aluminum or aluminum alloy frame rapidly heats, and the aluminum or aluminum alloy frame rapidly heats and uniformly melts. Under the capillary action of contact gaps between stainless steel and glass, between glass and between stainless steel and the action of self-cohesion of the solder after melting, the solder is melted, the soldered surface of the solder and the glass and the soldered surface of the stainless steel are fully immersed and wetted, and the soldering of aluminum or aluminum alloy on the glass surface and the stainless steel surface is realized. Meanwhile, the long-acting getter close to the edges of the two glass plates in the interlayer cavity between the two glass plates is unsealed.
In the process, aluminum rapidly heats to form liquid aluminum, and glass brazed with stainless steel aluminum is not fully softened due to poor heat conduction property. Whereas at 720 ℃, the main components Si02 and Al of the glass react chemically: 4a1+3sio02=2a1203+3si, i.e. the interface of glass and aluminum can be firmly bonded by chemical reaction. At the same time, at 720 ℃, the stainless steel is not softened, and the surface of the oxide layer of the stainless steel and aluminum are subjected to chemical reaction, namely, the interface of the stainless steel and aluminum is firmly combined due to the chemical reaction. However, the temperature of 720 ℃ is already the softening temperature of the common glass, so that if the brazing temperature is reduced, the glass is ensured not to be obviously softened, and the process requirement can be met. The aluminum alloy brazing material is selected for reducing the brazing temperature between the glass and the stainless steel frame, improving the brazing quality between the glass and the stainless steel and reducing the brazing process difficulty.
Although aluminum or aluminum alloy brazing materials have good kovar properties, given the large difference in linear expansion coefficients between glass and aluminum or aluminum alloy brazing materials, certain stresses are generated on the brazing surfaces due to inconsistent shrinkage during cooling. Therefore, the stainless steel frame is deformed as much as possible to absorb the stress generated by the expansion and contraction of aluminum or aluminum alloy brazing material, and the brazing quality between the stainless steel frame and glass is ensured.
Meanwhile, as the U-shaped closed-loop stainless steel frame groove with the cross section is deeper, the closed-loop aluminum or aluminum alloy frame corresponding to the groove is longer, and the formed brazing connection sealing layer is thicker, so that the brazing strength of aluminum or aluminum alloy, glass and stainless steel is high, and the airtight sealing performance is good.
After the aluminum or aluminum alloy frame is heated and melted uniformly, the resistance can suddenly become large, and the current can instantaneously become small. Therefore, the phenomenon can be utilized to automatically and intelligently control the electrifying and heating time, precisely control the brazing temperature and well realize the vacuum brazing of aluminum or aluminum alloy, plate glass and stainless steel frames.
After the brazing heating power supply is timely cut off, the aluminum or aluminum alloy brazing layer is cooled, a temperature field with the temperature being consistent with that of the glass and the stainless steel frame is gradually formed, good brazing connection is achieved, then water is directly sprayed to the vacuum furnace, the water is instantaneously evaporated and gasified to generate air pressure, the stainless steel frame is rapidly compacted and softened under the action of the air pressure, the aluminum or aluminum alloy brazing layer is enabled to be exothermic and solidified, rapid and large cooling of the vacuum furnace is achieved, and as the stainless steel, the aluminum or the aluminum alloy is a good conductor, the glass edge is wrapped by aluminum or aluminum alloy brazing material, glass in the stainless steel frame can be evenly and rapidly cooled in an exothermic mode, glass in the stainless steel frame is toughened, and then air is introduced, or a cooling device arranged in the vacuum furnace is started to cool the vacuum furnace.
Or after the brazing heating power supply is timely cut off, the aluminum or aluminum alloy brazing layer is cooled, a temperature field with the temperature being consistent with that of the glass and the stainless steel frame is gradually formed, good brazing connection is realized, then air is introduced into the vacuum furnace, the air absorbs heat, warms up and expands to generate pressure, the stainless steel frame rapidly compacts the aluminum or aluminum alloy brazing layer in a softened state under the action of air pressure, releases heat and solidifies the aluminum or aluminum alloy brazing layer, then water is sprayed to the vacuum furnace, the water absorbs air heat to cool the vacuum furnace, the glass in the stainless steel frame is moderately tempered, and then a cooling device arranged in the vacuum furnace is started to cool the vacuum furnace.
Or after the brazing heating power supply is timely disconnected, the aluminum or aluminum alloy brazing layer is cooled, a temperature field with the temperature being consistent with that of the glass and the stainless steel frame is gradually formed, good brazing connection is realized, then air is introduced into the vacuum furnace, the air absorbs heat, warms up and expands to generate pressure, the stainless steel frame rapidly compacts the aluminum or aluminum alloy brazing layer in a softened state under the action of air pressure, releases heat and solidifies the aluminum or aluminum alloy brazing layer, then the vacuum furnace is cooled by discharging hot air, and cold air is filled, or a cooling device arranged in the vacuum furnace is started to cool the vacuum furnace, and aluminum or aluminum alloy brazing material in the stainless steel frame can be naturally cooled and solidified, so that the glass in the stainless steel frame loses the toughening property.
Through the process, the brazing quality of glass and stainless steel through aluminum or aluminum alloy is improved, the characteristics of glass in the stainless steel frame of toughened glass are changed, the flat glass in the inner edge of the closed-loop stainless steel frame is still toughened glass, or the glass wrapped in the groove of the closed-loop stainless steel frame is moderately toughened, or the glass wrapped in the groove of the closed-loop stainless steel frame loses the toughening characteristics, and the glass plate with a vacuum interlayer is provided.
And after the temperature of the vacuum furnace is reduced to 50-55 ℃, opening the vacuum furnace door, and finally obtaining the vacuum heat-insulating glass plate by vacuum electric brazing of the glass plate and the stainless steel frame and aluminum or aluminum alloy.
The vacuum heat-insulating glass plate comprises plate glass, a gap isolation support, aluminum paste and a stainless steel frame. The method is characterized in that: the method comprises the steps of coating closed-loop aluminum paste brazing solder on a frame gap isolation support sealing surface of two pieces of flat glass with equal and mutually corresponding sizes, and then separating a hollow isolation gap between the two pieces of flat glass by using a complementary cover and a bonding piece of the frame gap isolation support of the two pieces of flat glass. The two glass plates forming the interlayer cavity are mutually corresponding in outline shape and size, and annular closed glass plate rolling gap isolation supporting frames with the same height as the protruding points are arranged at the edges of the two glass plates.
Embossing the glass sheet is performed during the production phase of the raw glass sheet or during the tempering phase of the glass sheet.
A long-acting getter is arranged in the interlayer cavity between the two glass plates.
The edges of the two pieces of flat glass are wrapped with a closed-loop aluminum paste brazing film layer coating wrapping edge with a U-shaped section. The joint height of the point support is provided with a support frame gap corresponding to the coating thickness of the U-shaped middle aluminum paste. Or the edge of at least one plate glass peripheral ring is subjected to concave stretching processing, so that the height of a supporting frame gap reserved by the butt joint height of the point support corresponds to the coating thickness of the U-shaped middle aluminum paste. And (3) connecting the two glass plates with the annular closed frame in a point contact manner and a surface contact manner to cover the two glass plates together.
Wrapping the U-shaped closed-loop corrugated stainless steel frame on the outer side of the U-shaped closed-loop aluminum paste brazing film layer. The grooves of the corrugated stainless steel frame are filled with aluminum paste. The self elasticity of the closed-loop corrugated stainless steel frame with the inverted U-shaped cross section is utilized to stretch and sleeve the closed-loop corrugated stainless steel frame with the outer side of the periphery of the hollow laminated glass plate body, and the closed-loop corrugated stainless steel frame with the inverted U-shaped cross section is utilized to be closely attached to the outer side of the U-shaped closed-loop aluminum paste brazing film layer on the outer side of the periphery of the hollow laminated glass plate body, so that the outer side of the periphery of the hollow heat-insulating laminated glass plate body is manufactured, the corrugated stainless steel frame with the inverted U-shaped cross section is wrapped, and the closed-loop corrugated stainless steel frame with the U-shaped cross section is tightly attached to the outer side of the closed-loop aluminum paste brazing film layer. And (3) manufacturing a hollow sandwich glass plate blank with a U-shaped section and embedded with a closed-loop aluminum paste brazing film layer and a stainless steel closed-loop protection frame, and drying the hollow sandwich glass plate blank.
Or the outer side of the U-shaped closed-loop aluminum paste brazing film layer outside the periphery of the hollow laminated glass plate body is wrapped with the closed-loop stainless steel frame with the L-shaped cross section and the inverted L-shaped cross section in a buckling sleeve manner, and the outer side of the U-shaped closed-loop aluminum paste brazing film layer is tightly attached together. And (3) manufacturing a hollow sandwich glass plate blank with a U-shaped section and embedded with a closed-loop aluminum paste brazing film layer and a stainless steel closed-loop protection frame, and drying the hollow sandwich glass plate blank.
And then, feeding at least one glass plate blank into a vacuum furnace, heating and vacuumizing, and performing electric heating brazing to realize vacuum brazing of the stainless steel frame, aluminum paste and glass, and unsealing the long-acting getter. And (3) cooling the vacuum furnace by ventilation, and then opening the furnace to obtain the regulating vacuum heat-preserving glass plate provided with the protective frame, the rolling support and the aluminum paste brazing interlayer.
The brazing aluminum paste comprises low-temperature glass aluminum paste, medium-temperature glass aluminum paste and high-temperature glass aluminum paste.
A method for manufacturing a vacuum heat-preserving glass plate with a protective frame, a rolling support aluminum paste brazing interlayer and regulation control comprises a glass plate, an aluminum paste brazing profile, a stainless steel frame and a vacuum brazing furnace. The method is characterized in that: the hollow interlayer is arranged between the two glass plates through the supporting frame, the aluminum paste brazing section is arranged on the sealing cover and the surface of the two glass plates and the edge of the glass plates, and the stainless steel frame is wrapped on the frame of the aluminum alloy brazing section to manufacture a hollow interlayer glass plate blank.
And then horizontally placing at least one hollow sandwich glass plate blank into a vacuum furnace provided with a supporting base, a fixed supporting clamp or a tray, connecting a pressing electric clamp on a stainless steel frame wrapped outside a U-shaped closed-loop aluminum paste brazing film layer with the cross section, and connecting another pressing electric clamp on another point at the equidistant position of the stainless steel frame to form two paths of conductive circuits with equal resistance of the wrapped glass frame. Closing the vacuum furnace door, and heating and vacuumizing the hollow sandwich glass plate blank in the vacuum furnace. When the set heating temperature, the vacuum degree and the set vacuumizing time below the tempering temperature 388 ℃ of the tempered glass are reached, a low-voltage and high-current heating power supply is connected to the two pressing electric clamps on the blank of the hollow laminated glass plate.
Because the resistance of the aluminum paste brazing film layer in the stainless steel frame, the glass and the aluminum paste brazing film layer is minimum, the current in the aluminum paste brazing film layer is maximum, and the aluminum paste brazing film layer rapidly heats and uniformly melts. Under the capillary action of contact gaps between stainless steel and glass, between glass and between stainless steel and the action of self-cohesion of the solder after melting, the solder is melted, the soldered surface of the solder and the glass and the soldered surface of the stainless steel are fully immersed and wetted, and the soldering of aluminum paste on the glass surface and the stainless steel surface is realized. Meanwhile, the long-acting getter close to the edges of the two glass plates in the interlayer cavity between the two glass plates is unsealed.
In the process, the aluminum paste solder rapidly heats to become liquid aluminum, and glass brazed with the stainless steel aluminum paste is not fully softened due to poor heat conduction performance. Whereas at 720 ℃, the main components Si02 and Al of the glass react chemically: 4a1+3sio02=2a1203+3si, i.e. the interface of glass and aluminum can be firmly bonded by chemical reaction. At the same time, at 720 ℃, the stainless steel is not softened, and the surface of the oxide layer of the stainless steel and aluminum are subjected to chemical reaction, namely, the interface of the stainless steel and aluminum is firmly combined due to the chemical reaction. However, the temperature of 720 ℃ is already the softening temperature of the common glass, so that if the brazing temperature is reduced, the glass is ensured not to be obviously softened, and the process requirement can be met. The aluminum alloy brazing material is selected for reducing the brazing temperature between the glass and the stainless steel frame, improving the brazing quality between the glass and the stainless steel and reducing the brazing process difficulty.
Although aluminum paste brazing materials have good kovar properties, given the large difference in linear expansion coefficients between glass and aluminum paste brazing materials, certain stresses are generated on the brazing surfaces due to inconsistent shrinkage during cooling. Therefore, the stainless steel frame is deformed as much as possible, the stress generated by the aluminum paste brazing material due to expansion and contraction is absorbed, and the brazing quality between the stainless steel frame and glass is ensured.
Meanwhile, the U-shaped closed-loop stainless steel frame groove with the cross section is deeper, so that the closed-loop aluminum paste frame corresponding to the U-shaped closed-loop stainless steel frame is longer, and therefore the formed brazing connection sealing layer is thicker, so that the brazing strength of the aluminum paste, glass and stainless steel is high, and the airtight sealing performance is good.
After the aluminum paste frame is heated and melted uniformly, the resistance can suddenly become large, and the current can instantaneously become small. Therefore, the phenomenon can be utilized to automatically and intelligently control the electrifying and heating time, precisely control the brazing temperature and well realize the vacuum brazing of aluminum paste, plate glass and stainless steel frames.
After the brazing heating power supply is timely cut off, the aluminum paste brazing layer is cooled, a temperature field with the temperature being consistent with that of the glass and the stainless steel frame is gradually formed, good brazing connection is achieved, then water is directly sprayed to the vacuum furnace, the water is instantly evaporated and gasified under the vacuum state to generate air pressure, the stainless steel frame is rapidly compacted and softened under the action of the air pressure, the aluminum paste brazing layer is enabled to be exothermic and solidified, rapid and large-scale cooling of the vacuum furnace is achieved, and as the stainless steel and the aluminum paste are both hot good conductors, the glass edges are wrapped by the aluminum paste brazing material, the glass in the stainless steel frame can be evenly and rapidly cooled in an exothermic mode, the glass in the stainless steel frame is toughened, and then air is introduced or a cooling device arranged in the vacuum furnace is started to cool the vacuum furnace.
Or when the brazing heating power supply is timely disconnected, the aluminum paste brazing layer is cooled, a temperature field with the temperature being consistent with that of the glass and the stainless steel frame is gradually formed, good brazing connection is realized, then air is introduced into the vacuum furnace, the air absorbs heat, warms up and expands to generate pressure, the stainless steel frame rapidly compacts the aluminum paste brazing layer in a softened state under the action of air pressure, releases heat and solidifies the aluminum paste brazing layer, then water is sprayed to the vacuum furnace, the water absorbs the air heat to cool the vacuum furnace, the glass in the stainless steel frame is moderately tempered, and then a cooling device arranged in the vacuum furnace is started to cool the vacuum furnace.
Or when the brazing heating power supply is timely disconnected, the aluminum paste brazing layer is cooled, a temperature field with the temperature being consistent with that of the glass and the stainless steel frame is gradually formed, good brazing connection is realized, then air is introduced into the vacuum furnace, the air absorbs heat, warms up and expands to generate pressure, the stainless steel frame rapidly compacts the aluminum paste brazing layer in a softened state under the action of air pressure, releases heat and solidifies the aluminum paste brazing layer, and then cooling the vacuum furnace by discharging hot air, or a cooling device arranged in the vacuum furnace is started to cool the vacuum furnace, and the aluminum paste brazing material in the stainless steel frame can be naturally cooled and solidified, so that the glass in the stainless steel frame loses the toughening property.
Through the process, the quality of brazing glass and stainless steel through aluminum paste is improved, the characteristics of glass in the stainless steel frame of the toughened glass are changed, the flat glass in the inner edge of the closed-loop stainless steel frame is still toughened glass, or the glass wrapped in the groove of the closed-loop stainless steel frame is moderately toughened, or the glass wrapped in the groove of the closed-loop stainless steel frame loses the toughening characteristics, and the glass plate with a vacuum interlayer is provided.
And after the temperature of the vacuum furnace is reduced to 50-55 ℃, opening a vacuum furnace door, and finally obtaining the vacuum heat-insulating glass plate by vacuum electric brazing of the glass plates and the stainless steel frame and the aluminum paste.
The vacuum-adjusting heat-preserving glass plate with the protective frame rolling and supporting tin alloy brazing interlayer comprises a glass plate, tin alloy brazing material, a support and a stainless steel frame. The method is characterized in that: two pieces of flat glass with equal and mutually corresponding sizes are rolled by a pressing roller, wherein the two pieces of flat glass are distributed with lattice convex point gap isolation supports and frame gap isolation supports, and tin alloy closed-loop brazing filler metal is compounded on the frame gap isolation support sealing surface of the flat glass. And then, the frames of the two embossed glass plates are separated and supported by the complementary cover and the combining piece, so that a hollow separation gap is formed between the two flat glass plates. The two glass plates forming the interlayer cavity are mutually corresponding in outline shape and size, and annular closed glass plate rolling gap isolation supporting frames with the same height as the protruding points are arranged at the edges of the two glass plates.
Embossing the glass sheet is performed during the production phase of the raw glass sheet or during the tempering phase of the glass sheet.
A long-acting getter is arranged in the interlayer cavity between the two glass plates.
The two pieces of embossed glass plates and flat glass, or the embossed glass plates and the embossed glass plates, with at least one of which is provided with convex points, are mutually corresponding in shape and size. The glass plate edge stretching support frame is provided with a closed loop tin alloy brazing sheet, and the interlocking cover is closed by the closing sheet. And then wrapping a closed-loop corrugated stainless steel frame with a U-shaped section on the outer side of the periphery of the hollow laminated glass plate body. And tin alloy brazing solder is filled in the groove of the corrugated stainless steel frame. The elasticity of the U-shaped closed-loop corrugated stainless steel frame with the cross section is utilized, the closed-loop tin alloy brazing sheet is tightly connected and sleeved on the glass plate edge stretching support frame, the U-shaped closed-loop corrugated stainless steel frame with the cross section is tightly attached to the two glass edges of the two glass plates which are wrapped and inlaid with the closed-loop tin alloy brazing sheet by utilizing self rebound of the closed-loop corrugated stainless steel frame, and a hollow laminated glass plate blank with the cross section of the U-shaped corrugated stainless steel frame is wrapped outside the closed-loop tin alloy brazing sheet.
Or the outer side of the closed loop tin alloy brazing sheet of the hollow laminated glass plate body is wrapped with a closed loop stainless steel frame with the upper section of L and the reverse L, and the closed loop stainless steel frame is buckled and sleeved with a gap between the glass edge and the glass, is filled with tin alloy, and is tightly attached to the closed loop tin alloy brazing sheet. And (3) manufacturing a hollow sandwich glass plate blank with two glass edges wrapped and inlaid with closed-loop tin alloy brazing sheets and tightly attached to a stainless steel closed-loop protection frame.
And then, at least one glass plate blank is sent into a vacuum furnace, heated and vacuumized, and vacuum brazing of the stainless steel frame, the tin alloy and the glass is realized through electric heating brazing, and the long-acting getter is unsealed. And (3) cooling the vacuum furnace by ventilation, and then opening the furnace to obtain the tin alloy brazing interlayer vacuum-adjusting heat-preserving glass plate with the protective frame rolling support.
The tin alloy brazing material comprises Sn-9Zn tin alloy.
A method for manufacturing a tin alloy brazing interlayer vacuum-adjusting heat-insulating glass plate with a protective frame rolling support comprises a glass plate, an isolation support, a tin alloy brazing material, a stainless steel frame and a vacuum brazing furnace. The method is characterized in that: and a hollow interlayer is arranged between the two glass plates through an isolation support and a support frame, tin alloy brazing solder is arranged on the sealing covers and the surfaces of the two glass plates and the edges of the glass plates, and the stainless steel frame is wrapped on the tin alloy brazing solder frame to prepare a hollow interlayer glass plate blank.
And then horizontally placing at least one hollow laminated glass plate blank into a vacuum furnace provided with a supporting base, a fixed supporting clamp or a tray. Closing the vacuum furnace door, heating and vacuumizing the hollow sandwich glass plate blank in the vacuum furnace, and setting vacuumizing time after the heating temperature and the vacuum degree are reached.
The tin alloy brazing sheet is uniformly melted when the temperature is raised to 300 ℃. Under the capillary action of contact gaps between stainless steel and glass, between glass and between stainless steel and the action of self-cohesion after the brazing filler metal is melted, the brazing filler metal is fully immersed and wetted on the brazing surface of the glass and the brazing surface of the stainless steel, and the brazing of tin alloy to glass and stainless steel frames is realized. Meanwhile, the long-acting getter close to the edges of the two glass plates in the interlayer cavity between the two glass plates is unsealed.
Although the tin alloy brazing material has good kovar characteristics, given the large difference in linear expansion coefficients between glass and tin alloy brazing material, a certain stress is generated on the brazing surface due to inconsistent shrinkage during cooling. Therefore, the stainless steel frame is deformed as much as possible, the stress generated by the tin alloy brazing material due to thermal expansion and cold contraction is absorbed, and the brazing quality between the stainless steel frame and glass is ensured.
Meanwhile, the U-shaped closed loop stainless steel frame groove with the cross section is deeper, so that the closed loop tin alloy frame corresponding to the U-shaped closed loop stainless steel frame is longer, and the formed brazing connection sealing layer is thicker, so that the tin alloy, glass and stainless steel have high brazing strength and good airtight sealing performance.
Introducing air into the vacuum furnace, heating the air to expand to generate pressure, rapidly compacting the softened tin alloy brazing layer by the stainless steel frame under the action of air pressure, enabling the softened tin alloy brazing layer to emit heat and solidify, and then, or starting a cooling device arranged in the vacuum furnace to cool the vacuum furnace.
Or air is introduced into the vacuum furnace, the air absorbs heat and heats up to expand to generate pressure, the stainless steel frame is rapidly compacted and softened with the action of air pressure, the softened tin alloy brazing layer is enabled to release heat and solidify, and then the vacuum furnace is cooled by discharging hot air and filling cold air, or a cooling device arranged in the vacuum furnace is started to cool the vacuum furnace, so that tin alloy brazing material in the stainless steel frame can be naturally cooled and solidified.
Through the process, the quality of brazing the glass and the stainless steel through the tin alloy is improved, and the flat glass is still toughened glass. And after the temperature of the vacuum furnace is reduced to 50-55 ℃, opening a vacuum furnace door, and finally obtaining the vacuum heat-insulating glass plate by vacuum brazing of the glass plates and the stainless steel frame and the tin alloy.
The vacuum heat-insulating glass plate with the protective frame rolling support metal brazing interlayer comprises a glass raw sheet, toughened glass, cloth-grain glass, embossed glass, halogenated glass, frosted glass and coated glass, wherein functional films of the coated glass comprise an antireflection film, a metal film and a decorative film. When the surface of the glass panel is compounded with a coating film, the coating film must be removed from the brazing surface of the glass panel.
The embossing glass plate is produced by calendaring glass salient points on a proper temperature position in a glass tin bath by a glass calendaring machine. The surface of one rolling roller of the glass rolling machine is carved with a series of pits which are uniform in shape and size and are arranged according to the dot matrix of the convex point support. The convex point embossed glass plate is subjected to cutting, edging and tempering treatment.
Or after edging and shaping the embossed glass plate which is a flat glass raw sheet, heating the flat glass raw sheet by a toughening furnace, calendaring the salient points by a glass calendaring machine, bending the supporting frame, and performing toughening treatment after shaping. The surface of one rolling roller of the glass rolling machine is carved with a series of pits which are uniform in shape and size and are arranged according to the dot matrix of the convex point support.
Or convex hull glass plate or corrugated glass plate is formed by calendaring glass pits in a glass calendaring machine at a proper temperature position in a glass tin bath when producing a flat glass raw sheet. The surface of one rolling roller of the glass rolling machine is carved with a series of convex points which are uniform in shape and size and are arranged according to the lattice of the concave point supports. The concave point embossed glass plate is subjected to cutting, edging and tempering treatment.
Or after edging and shaping the convex hull glass plate or the corrugated glass plate, heating the convex hull glass plate or the corrugated glass plate by a toughening furnace, stretching the convex points by a glass die, bending the supporting frame, and carrying out toughening treatment after shaping.
Or the bump glass plate is a glass raw sheet, and is manufactured by printing glass powder paste and then sintering. Printing low-temperature glass powder paste on a piece of flat glass according to the bump support object point array pattern, then sending the flat glass into a tempering sintering furnace, heating to a proper temperature of the melting point of the glass powder paste, converting a glass powder paste stack into glass bumps fused with the surface of the flat glass, bending a support frame, and performing tempering treatment.
Or the support is a support with at least one end coated with an adhesive, and comprises a high-hardness glass support, a high-hardness metal support and a high-hardness ceramic support which are equal to or close to the height of the closed-loop support sealing frame, and the columnar or spherical or annular supports are arranged in a lattice shape. Or the support is a support heat insulation material pad with aerogel heat insulation pads adhered on the end support surface, and the surfaces of the aerogel heat insulation pads at the two ends of the support heat insulation material pad are coated with inorganic glue comprising water glass glue.
Cutting the plate glass with proper thickness according to the designed size, edging, tempering and using the tempered glass panel as raw material. The surface of the glass brazing is required to be deoiled, cleaned and dried.
The vacuum heat-insulating glass plate is provided with a protective frame, a rolling support metal brazing interlayer and a closed-loop corrugated stainless steel frame with an inverted U-shaped section, wherein the outer side of the periphery of the middle laminated glass plate body is wrapped. The U-shaped corrugated stainless steel groove section is formed by stamping and stretching a stainless steel plate strip through a die, or the U-shaped corrugated stainless steel groove section is formed by rolling a stainless steel plate strip through a rolling mill. The closed-loop corrugated stainless steel frame is a U-shaped corrugated stainless steel groove profile, and is made by bending and welding or cutting and welding.
When the U-shaped closed-loop corrugated stainless steel frame groove is used, deoiling, cleaning and drying are needed.
The protective frame is provided with a protective frame rolling support metal brazing sandwich vacuum heat-insulating glass plate, and the outer side of the periphery of the hollow sandwich glass plate body is wrapped with a hollow sandwich glass plate structure protective frame formed by buckling and sleeving closed-loop stainless steel frames with L-shaped sections and reverse L-shaped sections. The L-shaped stainless steel section is a stainless steel strip, and is formed by stamping and stretching through a die, or the L-shaped stainless steel section is a stainless steel strip, and is formed by rolling through a rolling mill. The closed loop L-shaped stainless steel frame is made of L-shaped stainless steel sections through bending welding or cutting welding.
The L-shaped stainless steel section is required to be deoiled, cleaned and dried when in use.
The vacuum heat-insulating glass plate with the metal brazing interlayer is provided with a protective frame for rolling and supporting, and an ultrasonic transducer for improving the brazing quality of glass and glass, glass and metal is arranged on a glass tray of a brazing furnace.
The beneficial effects of the invention are as follows:
the vacuum glass manufactured by the invention can obtain good metal glass brazing quality, and solves the problem of tempering failure of the vacuum glass, thereby solving the safety problem of the vacuum glass. Moreover, compared with the existing vacuum glass, the vacuum glass manufactured by the process method has better heat preservation and sound insulation effects and top-level light transmittance. The toughened glass can be widely applied to materials, the manufacturing cost is greatly reduced, the structural form is diversified, the glass has the characteristics of high strength, safety, long service life, large size, low manufacturing cost, high yield, good heat insulation and sound insulation performance, strong functionality, low energy consumption, good perspective effect, convenience for mass production and the like, and the problems of the existing functional glass are solved. Thereby the vacuum glass is maximally applied to facility agriculture and high-rise buildings, and the energy-saving effect of the buildings is maximally achieved. Therefore, the invention has good economic benefit, environmental benefit and social benefit.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a cross-sectional view of a glass plate composite sheet with glass stretching supporting frames, lattice sintering supporting salient points distributed on two sides in a composite manner, and a U-shaped corrugated stainless steel groove profile frame metal brazing vacuum glass plate;
FIG. 2 is a cross-sectional view of a glass plate combination sheet provided with glass stretching supporting frames and two sides of which are compositely distributed with lattice stretching supporting convex points and a U-shaped corrugated stainless steel groove profile frame metal brazing vacuum glass plate;
FIG. 3 is a cross-sectional view of a glass plate composite sheet with glass stretching supporting frames, lattice stretching embossing supporting salient points distributed on two sides in a composite manner, and a U-shaped corrugated stainless steel groove profile frame metal brazing vacuum glass plate;
FIG. 4 is a cross-sectional view of a glass plate combination sheet with glass stretching supporting frames and lattice sintering supporting salient points distributed on two sides in a combined mode, and a vacuum glass plate in metal brazing with the frame of the buckled L-shaped stainless steel groove profile;
FIG. 5 is a cross-sectional view of a glass plate combination sheet with glass stretching supporting frames and lattice stretching supporting convex points distributed on two sides in a composite manner, and a vacuum glass plate in metal brazing with the frame of an L-shaped stainless steel groove profile in a buckling manner;
FIG. 6 is a cross-sectional view of a glass plate combination sheet with glass stretching supporting frames, lattice stretching embossing supporting salient points distributed on two sides in a composite mode, and a vacuum glass plate in metal brazing mode with the frame of the buckled L-shaped stainless steel groove profile;
FIG. 7 is a cross-sectional view of a glass plate with glass stretching support frames, double-sided composite distributed lattice embossing support salient points, and a U-shaped corrugated stainless steel groove profile frame metal brazing vacuum glass plate for stacking Luo Gaige;
FIG. 8 is a cross-sectional view of a glass plate with glass stretching supporting frames, lattice stretching supporting convex points distributed on two sides in a composite mode, for stacking Luo Gaige, and a U-shaped corrugated stainless steel groove profile frame metal brazing vacuum glass plate;
FIG. 9 is a cross-sectional view of a glass plate with glass stretching support frames, double-sided composite distributed lattice drawing sintering support salient points, for stacking Luo Gaige and brazing with U-shaped corrugated stainless steel groove profile frame metal vacuum glass plates;
FIG. 10 is a cross-sectional view of a glass plate with glass stretching supporting frames, lattice embossing supporting salient points distributed on two sides in a composite mode, for stacking Luo Gaige, and metal brazing vacuum glass plates with L-shaped stainless steel groove profile frames in a buckling mode;
FIG. 11 is a cross-sectional view of a glass plate with glass stretching supporting frames, lattice stretching supporting convex points distributed on two sides in a composite mode, for stacking Luo Gaige, and metal brazing vacuum glass plates with L-shaped stainless steel groove profile frames in a buckling mode;
FIG. 12 is a cross-sectional view of a glass plate with glass stretching supporting frames, lattice sintering supporting salient points distributed on two sides in a composite mode, and a vacuum glass plate in metal brazing mode for stacking Luo Gaige and buckling an L-shaped stainless steel groove profile frame.
In the figure: 1"U ' shaped stainless steel corrugated protective frame, 2 metal brazing layer, 3 lower side tempered plate glass, 4 vacuum interlayer, 5 upper side tempered plate glass, 6 sintering supporting convex points, 7 water glass, 8 stretching glass supporting frame, 9 stretching supporting convex points, 10 embossing supporting convex points, 11 outer side ' L ' shaped stainless steel protective frame, 12 inner side ' L ' shaped stainless steel protective frame.
Description of the embodiments
As shown in fig. 1: the stretched glass supporting frame 9 of the toughened glass 5 on the upper side of the lattice sintering supporting convex points 6 and the toughened glass 3 on the lower side of the lattice sintering supporting convex points 6 are distributed, and the vacuum interlayer 4 is formed by mutually corresponding, complementary buckling and interval of the outline shape and the size. The glass plate frame supporting complementary buckling metal brazing stainless steel frame vacuum glass plate is manufactured through the braze welding sealing of the closed loop U-shaped stainless steel corrugated protection frame 1 and the metal brazing layer 2.
As shown in fig. 2: lattice stretching supporting convex points 9 are distributed on the upper side toughened glass 5 and the lower side toughened glass 3, and the other is identical to the drawing of fig. 1.
As shown in fig. 3: lattice embossing supporting convex points 10 are distributed on the upper side toughened glass 5 and the lower side toughened glass 3, and the other is identical to the figure 1.
As shown in fig. 4: the stretched glass supporting frame 9 of the upper toughened glass 5 and the lower toughened glass 3 distributed with the lattice sintering supporting salient points 6 are mutually corresponding in outline shape and size, are complementarily buckled, and form the vacuum interlayer 4 at intervals. The glass plate frame supporting complementary buckling metal brazing stainless steel frame vacuum glass plate is manufactured through the buckling L-shaped stainless steel protective frame formed by the inner side L-shaped stainless steel protective frame 12 and the outer side L-shaped stainless steel protective frame 11 and the brazing seal of the metal brazing layer 2.
As shown in fig. 5: lattice stretching supporting convex points 9 are distributed on the upper side toughened glass 5 and the lower side toughened glass 3, and the other is identical to the drawing of fig. 4.
As shown in fig. 6: lattice embossing supporting convex points 10 are distributed on the upper side toughened glass 5 and the lower side toughened glass 3, and the other is identical to the figure 4.
As shown in fig. 7: the glass plate composite metal brazing filler metal with lattice embossing supporting convex points 10 distributed on the upper side toughened glass 5 and the lower side toughened glass 3 is laminated for a stack Luo Gaige, and the glass plate composite metal brazing filler metal is otherwise identical to the glass plate composite metal brazing filler metal shown in figure 1.
As shown in fig. 8: the glass plate composite metal brazing filler metal with lattice stretching supporting convex points 9 compositely distributed on the upper side toughened glass 5 and the lower side toughened glass 3 is laminated for a stack Luo Gaige, and the glass plate composite metal brazing filler metal is otherwise identical to the glass plate composite metal brazing filler metal shown in fig. 2.
As shown in fig. 9: the glass plate composite metal brazing filler metal with lattice sintering supporting convex points 6 compositely distributed on the upper side toughened glass 5 and the lower side toughened glass 3 is laminated for a stack Luo Gaige, and the glass plate composite metal brazing filler metal is otherwise identical to the glass plate composite metal brazing filler metal in FIG. 3.
As shown in fig. 10: the glass plate composite metal brazing filler metals with lattice embossing supporting convex points 10 distributed on the upper side toughened glass 5 and the lower side toughened glass 3 are laminated for the stack Luo Gaige, and are otherwise identical to those in fig. 4.
As shown in fig. 11: the glass plate composite metal brazing filler metal with lattice stretching supporting convex points 9 compositely distributed on the upper side toughened glass 5 and the lower side toughened glass 3 is laminated for a stack Luo Gaige, and the glass plate composite metal brazing filler metal is otherwise identical to the glass plate composite metal brazing filler metal in FIG. 5.
As shown in fig. 12: the glass plate composite metal brazing filler metals with lattice sintering supporting convex points 6 compositely distributed on the upper side toughened glass 5 and the lower side toughened glass 3 are laminated for a stack Luo Gaige, and are otherwise identical to those in FIG. 6.
Claims (10)
1. Be equipped with protection frame roll extrusion and support metal brazing intermediate layer vacuum heat preservation glass board, including flat glass, clearance isolation support, aluminium or aluminum alloy brazing frame, stainless steel frame, characterized by:
Two pieces of flat glass with the same size and corresponding to each other are pressed by a pressing roller to form a gap isolation support with dot matrix raised points, and then the frame gaps of the two embossed glass plates are isolated to support the complementary cover and the closing piece, so that a hollow isolation gap is formed between the two pieces of flat glass; the joint of the gap isolation support sealing surface of the plate glass frame is wrapped and embedded with a closed-loop aluminum or aluminum alloy solder frame with a mountain-shaped section and at least provided with one joint; the two glass plates forming the interlayer cavity are mutually corresponding in outline shape and size, and annular closed glass plate rolling gap isolation supporting frames with the same height as the protruding points are arranged at the edges of the two glass plates;
embossing the glass plate is carried out in the production stage of the glass raw sheet or in the tempering stage of the glass plate;
a long-acting getter is arranged in the interlayer cavity between the two glass plates;
wrapping the outer side of a closed-loop aluminum or aluminum alloy frame with a 'U' -shaped closed-loop corrugated stainless steel frame with a 'mountain' -shaped cross section, stretching and sleeving the outer side of the periphery of the hollow laminated glass plate body by utilizing the self elasticity of the closed-loop corrugated stainless steel frame with an inverted 'U' -shaped cross section, and tightly attaching the outer side of the 'mountain' -shaped closed-loop aluminum or aluminum alloy frame with the 'U' -shaped cross section with the outer side of the periphery of the hollow laminated glass plate body by utilizing the self resilience of the closed-loop corrugated stainless steel frame; two glass edges are wrapped and embedded with hollow sandwich glass plate blanks with cross sections of mountain-shaped, closed-loop aluminum or aluminum alloy frames and stainless steel closed-loop protection frames;
Or the outer side of the mountain-shaped closed-loop aluminum or aluminum alloy frame outside the periphery of the hollow sandwich glass plate body is wrapped with the closed-loop stainless steel frame with the L-shaped cross section and the inverted L-shaped cross section, and the closed-loop stainless steel frame is buckled and sleeved with the outer side of the mountain-shaped closed-loop aluminum or aluminum alloy frame with the cross section and tightly attached together; two glass edges are wrapped and embedded with hollow sandwich glass plate blanks with cross sections of mountain-shaped, closed-loop aluminum or aluminum alloy frames and stainless steel closed-loop protection frames;
then, at least one glass plate blank is sent into a vacuum furnace, heated and vacuumized, and vacuum brazing of a stainless steel frame, aluminum or aluminum alloy and glass is realized through electric heating brazing, and the long-acting getter is unsealed; ventilating and cooling the vacuum furnace, and then opening the furnace to obtain the metal brazing interlayer vacuum heat-insulating glass plate with the protective frame rolling support;
the aluminum or aluminum alloy brazing filler metal includes Al and the brazing filler metal containing Al includes AI-Si system, al-Cu-Si system and Zn-AI system.
2. The vacuum heat-preserving glass plate with the protective frame rolling support metal brazing interlayer, which is provided with the protective frame rolling support metal brazing interlayer and comprises a glass plate, an aluminum or aluminum alloy brazing profile, a stainless steel frame and a vacuum brazing furnace, and is characterized in that: a hollow interlayer is arranged between two glass plates through a supporting frame, aluminum or aluminum alloy brazing sectional materials are arranged on the sealing covers and the surfaces of the two glass plates and the edges of the glass plates, and stainless steel frames are wrapped on the aluminum alloy brazing sectional material frames to prepare hollow interlayer glass plate blanks;
Then, horizontally placing at least one hollow sandwich glass plate blank into a vacuum furnace provided with a supporting base, a fixed supporting clamp or a tray, connecting a pressing electric clamp on a stainless steel frame wrapped outside a joint of a mountain-shaped closed-loop aluminum or aluminum alloy frame with a cross section, and connecting another pressing electric clamp on another point at the equidistant position of the stainless steel frame to form two paths of conductive loops with equal resistance of the wrapped glass frame; closing a vacuum furnace door, and heating and vacuumizing a hollow sandwich glass plate blank in the vacuum furnace; when the set heating temperature, the vacuum degree and the set vacuumizing time below the tempering temperature 388 ℃ of the tempered glass are reached, a low-voltage and high-current heating power supply is connected to the two pressing electric clamps on the blank of the hollow laminated glass plate;
because the resistance of the aluminum or aluminum alloy frame in the stainless steel frame, the glass, the aluminum or aluminum alloy frame is minimum, the current in the aluminum or aluminum alloy frame is maximum, the aluminum or aluminum alloy frame rapidly heats, and the aluminum or aluminum alloy frame rapidly heats and uniformly melts; under the capillary action of contact gaps between stainless steel and glass, between glass and between stainless steel and the action of self-cohesion of the solder after the solder is melted, the surface of the glass solder and the surface of the stainless steel solder are fully immersed and wetted, and the brazing of aluminum or aluminum alloy to the surface of the glass and the surface of the stainless steel is realized; meanwhile, unsealing the long-acting getter close to the edges of the two glass plates in the interlayer cavity between the two glass plates;
In the process, aluminum rapidly heats to form liquid aluminum, and glass brazed with stainless steel aluminum is not fully softened due to poor heat conduction property; whereas at 720 ℃, the main components Si02 and Al of the glass react chemically: 4a1+3sio02=2a1203+3si, i.e., the interface of glass and aluminum may be firmly bonded by chemical reaction; meanwhile, at 720 ℃, the stainless steel is not softened, and the surface of an oxide layer of the stainless steel and aluminum are subjected to chemical reaction, namely, the interface of the stainless steel and the aluminum is firmly combined due to the chemical reaction; however, the temperature of 720 ℃ is the softening temperature of the common glass after all, so that if the brazing temperature is reduced, the glass is ensured not to be obviously softened, and the process requirement can be met; the aluminum alloy brazing material is selected for reducing the brazing temperature between the glass and the stainless steel frame, improving the brazing quality between the glass and the stainless steel and reducing the brazing process difficulty;
although aluminum or aluminum alloy brazing material has good kovar characteristics, given that the coefficients of linear expansion of glass and aluminum or aluminum alloy brazing material are very different, certain stress can be generated on a brazing surface due to inconsistent shrinkage in the cooling process; therefore, the stainless steel frame is deformed as much as possible, the stress generated by the expansion and contraction of aluminum or aluminum alloy brazing material is absorbed, and the brazing quality between the stainless steel frame and glass is ensured;
Meanwhile, as the groove of the closed-loop stainless steel frame with the U-shaped section is designed deeper, the corresponding closed-loop aluminum or aluminum alloy frame is longer, so that the formed brazing connection sealing layer is thicker, the brazing strength of aluminum or aluminum alloy, glass and stainless steel is high, and the airtight sealing performance is good;
after the aluminum or aluminum alloy frame is heated and melted uniformly, the resistance can suddenly become large, and the current can instantaneously become small; therefore, the phenomenon can be utilized to automatically and intelligently control the electrifying and heating time, precisely control the brazing temperature and well realize the vacuum brazing of aluminum or aluminum alloy, plate glass and stainless steel frames;
after the brazing heating power supply is timely cut off, the aluminum or aluminum alloy brazing layer is cooled, a temperature field with the temperature being consistent with that of the glass and the stainless steel frame is gradually formed, good brazing connection is realized, then water is directly sprayed to the vacuum furnace, the water is instantaneously evaporated and gasified under the vacuum state to generate air pressure, the stainless steel frame rapidly compacts the aluminum or aluminum alloy brazing layer in a softened state under the action of the air pressure, the aluminum or aluminum alloy brazing layer is enabled to emit heat and solidify, and the vacuum furnace is rapidly cooled greatly;
Or when the brazing heating power supply is timely cut off, the aluminum or aluminum alloy brazing layer is cooled, a temperature field with the temperature being approximately consistent with that of the glass and the stainless steel frame is gradually formed, good brazing connection is realized, then air is introduced into the vacuum furnace, the air absorbs heat, warms up and expands to generate pressure, the stainless steel frame rapidly compacts the aluminum or aluminum alloy brazing layer in a softened state under the action of air pressure, releases heat and solidifies the aluminum or aluminum alloy brazing layer, then water is sprayed to the vacuum furnace, the water absorbs air heat to cool the vacuum furnace, the glass in the stainless steel frame is moderately tempered, and then a cooling device arranged in the vacuum furnace is started to cool the vacuum furnace;
or when the brazing heating power supply is timely cut off, the aluminum or aluminum alloy brazing layer is cooled, a temperature field with the temperature being consistent with that of the glass and the stainless steel frame is gradually formed, good brazing connection is realized, then air is introduced into the vacuum furnace, the air absorbs heat, heats up and expands to generate pressure, the stainless steel frame rapidly compacts the aluminum or aluminum alloy brazing layer in a softened state under the action of air pressure, releases heat and solidifies the aluminum or aluminum alloy brazing layer, and then the vacuum furnace is cooled by discharging hot air, filling cold air, or a cooling device arranged in the vacuum furnace is started to cool the vacuum furnace, and aluminum or aluminum alloy brazing material in the stainless steel frame can be naturally cooled and solidified, so that the glass in the stainless steel frame loses the toughening property;
Through the process, the brazing quality of glass and stainless steel through aluminum or aluminum alloy is improved, the characteristics of glass in the stainless steel frame of the tempered glass are changed, the flat glass in the inner edge of the closed-loop stainless steel frame is still tempered glass, or the glass wrapped in the groove of the closed-loop stainless steel frame is moderately tempered, or the glass wrapped in the groove of the closed-loop stainless steel frame loses the tempering characteristics, and the glass plate with a vacuum interlayer is provided with the glass plate;
and after the temperature of the vacuum furnace is reduced to 50-55 ℃, opening the vacuum furnace door, and finally obtaining the vacuum heat-insulating glass plate by vacuum electric brazing of the glass plate and the stainless steel frame and aluminum or aluminum alloy.
3. Be equipped with protection frame roll extrusion and support metal brazing intermediate layer vacuum heat preservation glass board, including flat glass, clearance isolation support, aluminium thick liquid, stainless steel frame, characterized by: two pieces of flat glass with equal and corresponding sizes are rolled out by a press roll and distributed with lattice convex point gap isolation supports, closed-loop aluminum paste brazing flux is coated on a sealing surface of the flat glass frame gap isolation supports, and then a frame gap isolation support complementary cover and a bonding piece of two embossed glass plates are used for separating a hollow isolation gap between the two pieces of flat glass; the two glass plates forming the interlayer cavity are mutually corresponding in outline shape and size, and annular closed glass plate rolling gap isolation supporting frames with the same height as the protruding points are arranged at the edges of the two glass plates;
Embossing the glass plate is carried out in the production stage of the glass raw sheet or in the tempering stage of the glass plate;
a long-acting getter is arranged in the interlayer cavity between the two glass plates;
the edges of the two pieces of flat glass are wrapped with a closed-loop aluminum paste brazing film layer coating wrapping edge with a U-shaped section; the joint height of the point support is provided with a support frame gap corresponding to the coating thickness of the U-shaped middle aluminum paste; or the edge of at least one plate glass peripheral ring is subjected to concave stretching processing, so that the gap height of the support frame reserved by the butt joint height of the point support corresponds to the coating thickness of the U-shaped middle aluminum paste; the two glass plates and the annular closed frame are in point contact and surface contact with each other to form a cover piece;
wrapping the outer side of a closed-loop aluminum paste brazing film layer with a U-shaped section with a U-shaped closed-loop corrugated stainless steel frame; aluminum paste is filled in the groove of the corrugated stainless steel frame; stretching and sleeving the outer side of the periphery of the hollow laminated glass plate body by utilizing the self elasticity of a closed-loop corrugated stainless steel frame with the inverted U-shaped cross section, and tightly attaching the closed-loop corrugated stainless steel frame with the inverted U-shaped cross section to the outer side of a closed-loop aluminum paste brazing film layer on the outer side of the periphery of the hollow laminated glass plate body by utilizing the self resilience of the closed-loop corrugated stainless steel frame, so that the outer side of the periphery of the hollow laminated glass plate body is provided with the hollow heat-insulating laminated glass plate body, the corrugated stainless steel frame with the inverted U-shaped cross section is wrapped, and the closed-loop corrugated stainless steel frame with the U-shaped cross section is tightly attached to the outer side of the closed-loop aluminum paste brazing film layer; two glass edges are respectively wrapped with a hollow sandwich glass plate blank embedded with a closed-loop aluminum paste brazing film layer and a stainless steel closed-loop protection frame, and the hollow sandwich glass plate blank is dried;
Or the outer side of the U-shaped closed-loop aluminum paste brazing film layer outside the periphery of the hollow laminated glass plate body is wrapped with a closed-loop stainless steel frame with the cross section of L and the reverse L in a buckling manner, and the closed-loop stainless steel frame is tightly attached to the outer side of the U-shaped closed-loop aluminum paste brazing film layer; two glass edges are respectively wrapped with a hollow sandwich glass plate blank embedded with a closed-loop aluminum paste brazing film layer and a stainless steel closed-loop protection frame, and the hollow sandwich glass plate blank is dried;
then, at least one glass plate blank is sent into a vacuum furnace, heated and vacuumized, and vacuum brazing of a stainless steel frame, aluminum paste and glass is realized through electric heating brazing, and the long-acting getter is unsealed; ventilating and cooling the vacuum furnace, and then opening the furnace to obtain the regulating vacuum heat-preserving glass plate provided with the protective frame rolling support aluminum paste brazing interlayer;
the brazing aluminum paste comprises low-temperature glass aluminum paste, medium-temperature glass aluminum paste and high-temperature glass aluminum paste.
4. The vacuum heat-preserving glass plate with the protective frame rolling support metal brazing interlayer, which is provided with the protective frame rolling support metal brazing interlayer and comprises a glass plate, an aluminum paste brazing profile, a stainless steel frame and a vacuum brazing furnace, and is characterized in that: a hollow interlayer is arranged between two glass plates through a supporting frame, aluminum paste brazing profiles are arranged on the sealing covers and the surfaces of the two glass plates and the edges of the glass plates, and stainless steel frames are wrapped on the frames of the aluminum alloy brazing profiles to prepare hollow interlayer glass plate blanks;
Then, horizontally placing at least one hollow sandwich glass plate blank into a vacuum furnace provided with a supporting base, a fixed supporting clamp or a tray, connecting a pressing electric clamp on a stainless steel frame wrapped outside a U-shaped closed-loop aluminum paste brazing film layer with a cross section, and connecting another pressing electric clamp on another point at the equidistant position of the stainless steel frame to form two paths of conductive loops with equal resistance of the wrapped glass frame; closing a vacuum furnace door, and heating and vacuumizing a hollow sandwich glass plate blank in the vacuum furnace; when the set heating temperature, the vacuum degree and the set vacuumizing time below the tempering temperature 388 ℃ of the tempered glass are reached, a low-voltage and high-current heating power supply is connected to the two pressing electric clamps on the blank of the hollow laminated glass plate;
because the resistance of the aluminum paste brazing film layer in the stainless steel frame, the glass and the aluminum paste brazing film layer is the smallest, the current in the aluminum paste brazing film layer is the largest, the aluminum paste brazing film layer rapidly heats and uniformly melts, and the temperature of the aluminum paste brazing film layer rapidly rises; under the capillary action of contact gaps between stainless steel and glass, between glass and between stainless steel and the action of self-cohesion of the solder after the solder is melted, the solder and the glass brazing surface and the stainless steel brazing surface are fully immersed and wetted, so that the brazing of aluminum paste to the glass surface and the stainless steel surface is realized; meanwhile, unsealing the long-acting getter close to the edges of the two glass plates in the interlayer cavity between the two glass plates;
In the process, the aluminum paste solder rapidly heats to become liquid aluminum, and glass brazed with the stainless steel aluminum paste is poor in heat conduction performance, and the heating time is short and is not completely softened; whereas at 720 ℃, the main components Si02 and Al of the glass react chemically: 4a1+3sio02=2a1203+3si, i.e., the interface of glass and aluminum may be firmly bonded by chemical reaction; meanwhile, at 720 ℃, the stainless steel is not softened, and the surface of an oxide layer of the stainless steel and aluminum are subjected to chemical reaction, namely, the interface of the stainless steel and the aluminum is firmly combined due to the chemical reaction; however, the temperature of 720 ℃ is the softening temperature of the common glass after all, so that if the brazing temperature is reduced, the glass is ensured not to be obviously softened, and the process requirement can be met; the aluminum alloy brazing material is selected for reducing the brazing temperature between the glass and the stainless steel frame, improving the brazing quality between the glass and the stainless steel and reducing the brazing process difficulty;
although the aluminum paste brazing material has good kovar property, given that the linear expansion coefficients of glass and the aluminum paste brazing material are greatly different, certain stress can be generated on a brazing surface due to inconsistent shrinkage in the cooling process; therefore, the stainless steel frame is deformed as much as possible, the stress generated by the aluminum paste brazing material due to expansion caused by heat and contraction caused by cold is absorbed, and the brazing quality between the stainless steel frame and glass is ensured;
Meanwhile, as the groove of the closed-loop stainless steel frame with the U-shaped section is designed deeper, the closed-loop aluminum paste frame corresponding to the groove is longer, so that the formed brazing connection sealing layer is thicker, the brazing strength of the aluminum paste, glass and stainless steel is high, and the airtight sealing performance is good;
after the aluminum paste frame is heated and melted uniformly, the resistance can suddenly become large, and the current can instantaneously become small; therefore, the phenomenon can be utilized to automatically and intelligently control the electrifying and heating time, precisely control the brazing temperature and well realize the vacuum brazing of aluminum paste, plate glass and stainless steel frames;
after the brazing heating power supply is timely cut off, the aluminum paste brazing layer is cooled, a temperature field with the temperature being consistent with that of the glass and the stainless steel frame is gradually formed, good brazing connection is realized, then water is directly sprayed to the vacuum furnace, the water is instantaneously evaporated and gasified under the vacuum state to generate air pressure, the stainless steel frame rapidly compacts the aluminum paste brazing layer in a softened state under the action of the air pressure, the aluminum paste brazing layer is enabled to emit heat and solidify, and rapid and large cooling of the vacuum furnace is realized, and as the stainless steel and the aluminum paste are both good heat conductors, the glass edges are wrapped by the aluminum paste brazing material, the glass in the stainless steel frame can be uniformly and rapidly cooled in a heat release mode, the glass in the stainless steel frame is toughened, and then air is introduced or a cooling device arranged in the vacuum furnace is started to cool the vacuum furnace;
Or when the brazing heating power supply is timely cut off, the aluminum paste brazing layer is cooled, a temperature field with the temperature being approximately consistent with that of the glass and the stainless steel frame is gradually formed, good brazing connection is realized, then air is introduced into the vacuum furnace, the air absorbs heat and is heated up to expand to generate pressure, the stainless steel frame rapidly compacts the aluminum paste brazing layer in a softened state under the action of air pressure, and releases heat to solidify, then water is sprayed to the vacuum furnace, so that the water absorbs the air heat to cool the vacuum furnace, the glass in the stainless steel frame is moderately tempered, and then a cooling device arranged in the vacuum furnace is started to cool the vacuum furnace;
or when the brazing heating power supply is timely cut off, the aluminum paste brazing layer is cooled, a temperature field with the temperature being close to the same is gradually formed with the glass and the stainless steel frame, good brazing connection is realized, then air is introduced into the vacuum furnace, the air absorbs heat, warms up and expands to generate pressure, the stainless steel frame rapidly compacts the aluminum paste brazing layer in a softened state under the action of air pressure, releases heat and solidifies the aluminum paste brazing layer, and then the vacuum furnace is cooled by discharging hot air and filling cold air, or a cooling device arranged in the vacuum furnace is started to cool the vacuum furnace, and aluminum paste brazing material in the stainless steel frame can be naturally cooled and solidified, so that the glass in the stainless steel frame loses the toughening property;
Through the process, the quality of brazing glass and stainless steel through aluminum paste is improved, the characteristics of glass in the stainless steel frame of the tempered glass are changed, so that the flat glass in the inner edge of the closed-loop stainless steel frame is still tempered glass, or the glass wrapped in the groove of the closed-loop stainless steel frame is moderately tempered, or the glass wrapped in the groove of the closed-loop stainless steel frame loses the tempering characteristics, and the glass plate with a vacuum interlayer is provided;
and after the temperature of the vacuum furnace is reduced to 50-55 ℃, opening a vacuum furnace door, and finally obtaining the vacuum heat-insulating glass plate by vacuum electric brazing of the glass plates and the stainless steel frame and the aluminum paste.
5. Be equipped with protection frame roll extrusion and support metal brazing sandwich vacuum heat preservation glass board, including glass board, tin alloy brazing filler metal, support, stainless steel frame, characterized by: two pieces of flat glass with equal and mutually corresponding sizes are rolled out by a press roller, and are distributed with lattice convex point gap isolation supports, and tin alloy closed-loop brazing filler metal is compounded on a sealing surface of the gap isolation supports of the frame of the flat glass; then, the frame gaps of the two embossed glass plates are isolated and supported to complement the cover and the closing piece, so that a hollow isolation gap is formed between the two flat glass plates; the two glass plates forming the interlayer cavity are mutually corresponding in outline shape and size, and annular closed glass plate rolling gap isolation supporting frames with the same height as the protruding points are arranged at the edges of the two glass plates;
Embossing the glass plate is carried out in the production stage of the glass raw sheet or in the tempering stage of the glass plate;
a long-acting getter is arranged in the interlayer cavity between the two glass plates;
the two pieces of embossed glass plates and flat glass, or the embossed glass plates and the embossed glass plates, with at least one of which is provided with convex points, are mutually corresponding in shape and size; the glass plate edge stretching support frame is provided with a closed loop tin alloy brazing sheet, and the interlocking cover is closed by the closing sheet; then wrapping a closed-loop corrugated stainless steel frame with a U-shaped section on the outer side of the periphery of the hollow sandwich glass plate body; tin alloy brazing solder is filled in the groove of the corrugated stainless steel frame; the elasticity of a U-shaped closed-loop corrugated stainless steel frame with the cross section is utilized to be closely connected and sleeved with a closed-loop tin alloy brazing sheet arranged on a glass plate edge stretching support frame, and the self rebound of the closed-loop corrugated stainless steel frame is utilized to enable the U-shaped closed-loop corrugated stainless steel frame with the cross section to be closely attached to the edges of two pieces of glass which are wrapped and inlaid with the closed-loop tin alloy brazing sheet to manufacture a hollow laminated glass plate blank with the U-shaped corrugated stainless steel frame wrapped on the outer side of the closed-loop tin alloy brazing sheet;
Or the outer side of the closed loop tin alloy brazing sheet of the hollow laminated glass plate body is wrapped with a closed loop stainless steel frame with the upper section of L and reverse L, and is buckled and sleeved with a gap between the glass edge and the closed loop stainless steel frame, and tin alloy is filled in the gap between the glass edge and the closed loop stainless steel frame and is tightly attached to the closed loop tin alloy brazing sheet; manufacturing a hollow sandwich glass plate blank with two glass edges wrapped and inlaid with closed-loop tin alloy brazing sheets and tightly attached to a stainless steel closed-loop protection frame;
then, at least one glass plate blank is sent into a vacuum furnace, heated and vacuumized, and vacuum brazing of a stainless steel frame, tin alloy and glass is realized through electric heating brazing, and the long-acting getter is unsealed; ventilating and cooling the vacuum furnace, and then opening the furnace to obtain the tin alloy brazing interlayer vacuum-adjusting heat-preserving glass plate with the protective frame rolling support;
the tin alloy brazing material comprises Sn-9Zn tin alloy.
6. The vacuum heat-preserving glass plate with the protective frame rolling support metal brazing interlayer, which is provided with the protective frame rolling support metal brazing interlayer and comprises a glass plate, an isolation support, tin alloy brazing material, a stainless steel frame and a vacuum brazing furnace, and is characterized in that: a hollow interlayer is arranged between the two glass plates through an isolation support and a support frame, tin alloy brazing solder is arranged on the sealing cover and the surface of the two glass plates and the edges of the glass plates, and a stainless steel frame is wrapped on the tin alloy brazing solder frame to prepare a hollow interlayer glass plate blank;
Then, horizontally placing at least one blank of the hollow laminated glass plate into a vacuum furnace provided with a supporting base, a fixed supporting clamp or a tray; closing a vacuum furnace door, heating and vacuumizing a hollow sandwich glass plate blank in the vacuum furnace, and setting vacuumizing time after the heating temperature and the vacuum degree are reached;
the tin alloy brazing sheet is uniformly melted when the temperature is raised to 300 ℃; under the capillary action of contact gaps between stainless steel and glass, between glass and between stainless steel and the action of self-cohesion of the solder after melting, the solder is melted, the brazing surface of the solder and the glass and the brazing surface of the stainless steel are fully immersed and wetted, and the brazing of tin alloy to the glass and the stainless steel frame is realized; meanwhile, unsealing the long-acting getter close to the edges of the two glass plates in the interlayer cavity between the two glass plates;
although the tin alloy brazing material has good kovar property, given that the linear expansion coefficients of glass and the tin alloy brazing material are greatly different, certain stress can be generated on a brazing surface due to inconsistent shrinkage in the cooling process; therefore, the stainless steel frame is deformed as much as possible, the stress generated by the tin alloy brazing material due to expansion caused by heat and contraction caused by cold is absorbed, and the brazing quality between the stainless steel frame and glass is ensured;
Meanwhile, as the U-shaped closed-loop stainless steel frame groove with the cross section is designed deeper, the closed-loop tin alloy frame corresponding to the groove is longer, and the formed brazing connection sealing layer is thicker, so that the brazing strength of the tin alloy, glass and stainless steel is high, and the airtight sealing performance is good;
introducing air into the vacuum furnace, heating the air to expand to generate pressure, rapidly compacting the softened tin alloy brazing layer by the stainless steel frame under the action of air pressure, and enabling the softened tin alloy brazing layer to emit heat and solidify, and then, or starting a cooling device arranged in the vacuum furnace to cool the vacuum furnace;
or air is introduced into the vacuum furnace, the air absorbs heat and heats up to expand to generate pressure, the stainless steel frame rapidly compacts the softened tin alloy brazing layer under the action of air pressure, and the softened tin alloy brazing layer releases heat to solidify, and then the vacuum furnace is cooled by discharging hot air and filling cold air, or a cooling device arranged in the vacuum furnace is started to cool the vacuum furnace, so that tin alloy brazing material in the stainless steel frame can be naturally cooled and solidified;
through the process, the quality of brazing the glass and the stainless steel through the tin alloy is improved, and the flat glass is still toughened glass; and after the temperature of the vacuum furnace is reduced to 50-55 ℃, opening a vacuum furnace door, and finally obtaining the vacuum heat-insulating glass plate by vacuum brazing of the glass plates and the stainless steel frame and the tin alloy.
7. The vacuum insulated glass panel with protective frame rolling supported metal braze interlayer of any of claims 1 to 6, characterized in that: the glass plate comprises a glass raw sheet, toughened glass, cloth-grain glass, embossed glass, halogenated glass, frosted glass and coated glass, and functional films of the coated glass comprise an antireflection film, a metal film and a decorative film; the surface of the glass panel is compounded with a coating film, so that the coating film must be removed from the brazing surface of the glass panel;
the embossing glass plate is formed by rolling glass salient points on a proper temperature position in a glass tin bath through a glass rolling machine when a flat glass raw sheet is produced; a series of pits which are uniform in shape and size and are arranged according to the convex point support point array are engraved on the surface of one calendaring roller of the glass calendaring machine; cutting, edging and tempering the convex point embossed glass plate;
or the salient point embossed glass plate is formed by edging and shaping a flat glass raw sheet, heating the flat glass raw sheet by a toughening furnace, calendaring salient points by a glass calendaring machine, bending a supporting frame, and performing toughening treatment after shaping; a series of pits which are uniform in shape and size and are arranged according to the convex point support point array are engraved on the surface of one calendaring roller of the glass calendaring machine;
Or the bump glass plate is a glass raw sheet, and is manufactured by printing glass powder paste and then using a sintering method; printing low-temperature glass powder paste on a piece of flat glass according to the bump support object point array pattern, then sending the flat glass into a tempering sintering furnace, heating to a certain proper temperature of the melting point of the glass powder paste, converting a glass powder paste stack into glass bumps fused with the surface of the flat glass, and bending a support frame to perform tempering treatment;
or the support is a support with at least one end coated with an adhesive, and comprises a high-hardness glass support, a high-hardness metal support and a high-hardness ceramic support which are equal or close to the height of the closed-loop support sealing frame, and the columnar or spherical or annular supports are arrayed in a lattice shape; or the support is a support heat insulation material pad with aerogel heat insulation pads adhered to the end support surface, and the surfaces of the aerogel heat insulation pads at the two ends of the support heat insulation material pad are coated with inorganic glue comprising water glass glue;
cutting the plate glass with proper thickness according to the designed size, edging, tempering and using the tempered glass panel as raw material; the surface of the glass brazing is required to be deoiled, cleaned and dried.
8. The vacuum insulated glass panel with protective frame rolling supported metal braze interlayer of any of claims 1 to 6, characterized in that: the outer side of the periphery of the hollow sandwich glass plate body is wrapped with a closed-loop corrugated stainless steel frame with an inverted U-shaped section; the U-shaped corrugated stainless steel groove section is formed by stamping and stretching a stainless steel plate strip through a die, or the U-shaped corrugated stainless steel groove section is formed by rolling a stainless steel plate strip through a rolling mill; the closed-loop corrugated stainless steel frame is a U-shaped corrugated stainless steel groove profile, and is made into an elastically contracted closed-loop corrugated stainless steel frame by bending and welding or cutting and welding;
when the U-shaped closed-loop corrugated stainless steel frame groove is used, deoiling, cleaning and drying are needed.
9. The vacuum insulated glass panel with protective frame rolling supported metal braze interlayer of any of claims 1 to 6, characterized in that: the outer side of the periphery of the hollow laminated glass plate body is wrapped with a hollow laminated glass plate structure protection frame formed by buckling and sleeving closed-loop stainless steel frames with L-shaped sections and reverse L-shaped sections; the L-shaped stainless steel section is a stainless steel strip, and is formed by stamping and stretching through a die, or the L-shaped stainless steel section is a stainless steel strip, and is formed by rolling through a rolling mill; the closed loop L-shaped stainless steel frame is made of L-shaped stainless steel sections through bending welding or cutting welding;
The L-shaped stainless steel section is required to be deoiled, cleaned and dried when in use.
10. The vacuum insulated glass panel with protective frame rolling supported metal braze interlayer of any of claims 1 to 6, characterized in that: the glass tray of the brazing furnace is provided with an ultrasonic transducer for improving the brazing quality of glass and glass, glass and metal.
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| PCT/CN2018/121139 WO2020118663A1 (en) | 2018-12-11 | 2018-12-14 | Adjustable vacuum heat insulation glass plate provided with metal brazed sandwich rolling supported by protective frame |
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- 2018-12-14 WO PCT/CN2018/121139 patent/WO2020118663A1/en active Application Filing
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| CN102121284A (en) * | 2010-01-05 | 2011-07-13 | 北京环能海臣科技有限公司 | Laminated sheet glass curtain wall for regulating cavity vacuum degree for thermal insulation |
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| Publication number | Publication date |
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| WO2020118663A1 (en) | 2020-06-18 |
| CN111302661A (en) | 2020-06-19 |
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