CN114315110B - Curved glass processing method - Google Patents
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- CN114315110B CN114315110B CN202111645453.6A CN202111645453A CN114315110B CN 114315110 B CN114315110 B CN 114315110B CN 202111645453 A CN202111645453 A CN 202111645453A CN 114315110 B CN114315110 B CN 114315110B
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- 239000011521 glass Substances 0.000 title claims abstract description 171
- 238000003672 processing method Methods 0.000 title abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 41
- 238000005452 bending Methods 0.000 claims abstract description 24
- 238000007664 blowing Methods 0.000 claims abstract description 18
- 239000005340 laminated glass Substances 0.000 claims abstract description 18
- 239000005341 toughened glass Substances 0.000 claims abstract description 18
- 238000005496 tempering Methods 0.000 claims abstract description 16
- 238000002360 preparation method Methods 0.000 claims abstract description 3
- 238000012545 processing Methods 0.000 claims description 21
- 230000008569 process Effects 0.000 claims description 15
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- 239000002313 adhesive film Substances 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 239000011229 interlayer Substances 0.000 abstract description 11
- 238000000265 homogenisation Methods 0.000 description 9
- 230000008859 change Effects 0.000 description 8
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- 241001122767 Theaceae Species 0.000 description 2
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- NCXOIRPOXSUZHL-UHFFFAOYSA-N [Si].[Ca].[Na] Chemical compound [Si].[Ca].[Na] NCXOIRPOXSUZHL-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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Abstract
The invention provides a curved glass processing method, which comprises the following steps: s1: tempering the glass, and controlling the glass to be bent upwards by using blowing balance; s2: the glass is subjected to stress bending according to the bending edge, and the glass is subjected to additional mechanical stress besides the self toughening stress; s3, placing the toughened glass with the bow in a homogenizing furnace for homogenizing treatment; s4: and (3) preparing laminated glass laminated sheets, bonding the two sheets of glass through a rubber sheet, and introducing the laminated glass sheets into an autoclave for treatment after bow tightening to finish the preparation of the curved laminated glass. The invention creates the curved glass processing method, and the tempering procedure obtains tempered glass with the arch height of 3mm corresponding to each meter of arc length; the homogenizing furnace obtains the bow height of 9-15mm/m, and the accumulated bow height reaches 12-18mm/m; the arch height of not higher than 10mm/m is obtained in the interlayer working procedure, and the maximum accumulated arch height can reach 28 mm/m.
Description
Technical Field
The invention belongs to the field of glass processing, and particularly relates to a curved glass processing method.
Background
The curved glass is glass with a curved surface which is finally manufactured by heating and softening common glass, and the glass lines are beautiful, can be manufactured into different shapes according to actual requirements, breaks through the singleness of the traditional planar glass, is more flexible and various in use, can be applied to fish tanks, counters, glass curtain walls and the like, and gives a more unique feeling to the appearance.
In the common furniture decoration, glass is generally used less, doors and windows in common use have fixed patterns, and tea tables and the like are also made of toughened glass and the like. In recent years, in some advanced decorations, the frequency of using bent glass is higher and higher, along with the continuous improvement of aesthetic level of people, the manufacture of the bent glass is also more and more rich in artistic smell, and the bent glass with radian is adopted as the outer curtain wall glass of some buildings. The bent glass for building is mainly used for decoration inside and outside the building, daylighting roof, sightseeing elevator, arched corridor and the like; bent glass for home use is mainly used as glass furniture, glass aquariums, glass wash bowls, glass counters, glass tea tables, glass decorations, and the like. The traditional planar glass inevitably generates sharp corners during bonding, bent glass is selected and bent at the corners, so that the original use is not affected, and unnecessary hanging damage can be reduced.
Along with the continuous promotion of building art level, curved arc glass uses the proportion also more and more, and many glass deep-processing enterprises have all increased curved toughened glass production facility and have satisfied market's demand, are also gradually developing tempering technologies such as bent tempering more, reverse bend simultaneously. At present, some glass deep processing enterprises can use hydraulic curved air grids to process large-radius curved steel, the transformation cost of the air grids is about 200-350 ten thousand, 22-35 meters can be processed, the arc length can reach 5 meters, but the utilization rate of the equipment is low, the production cost of the method is high, and the method comprises high equipment depreciation cost and high arc adjustment cost caused by low temperature rising cost of a tempering furnace and low utilization rate of the tempering furnace.
As the proportion of curved glass used increases, the demand for special curved glass, such as large radius and large radian curved glass, increases. However, conventional tempering equipment does not have the processing capability, and needs to be modified at high cost to meet the requirements, but along with the shorter and shorter construction period of building projects, the time for modifying the tempering furnace in factories is not needed. Even if the transformation is carried out, the universality is not very strong, and the equipment conditions are difficult to meet the requirements of large radian and large radius at the same time.
Disclosure of Invention
Therefore, the invention aims to provide a curved glass processing method, which can produce large-radius and large-curved-edge glass on the basis of not changing the original equipment structure, digest a small amount of orders with high added value and improve the profitability.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
a method for processing curved glass comprises the following steps:
s1: tempering the glass, and controlling the glass to be bent upwards by using blowing balance;
s2: the glass is parallel to the bending edge for bending, and the glass is subjected to additional mechanical stress besides the self toughening stress;
s3: putting the toughened glass with the bow in a homogenizing furnace for homogenizing treatment;
s4: and (3) preparing laminated glass laminated sheets, bonding the two sheets of glass through a rubber sheet, and introducing the laminated glass sheets into an autoclave for treatment after bow tightening to finish the preparation of the curved laminated glass.
In the step S1, the glass is controlled to be bent upwards by using air blowing balance, and the control amplitude takes the short-side bending not exceeding the national standard or the internal control as a bottom line;
the air blowing balance of the lower surface of the glass is set to be 51-60%, so that the glass is bent upwards, and the bending degree is controlled within 3mm per meter arc length. The air blowing balance can adjust the cooling rate of the upper surface and the lower surface of the glass by adjusting the air blowing amount in the upper air grid and the lower air grid so as to control the bending degree of the glass. The air blowing balance of the lower surface of the glass is set to be 51-60%, so that the glass is bent upwards. This step is to obtain the bending direction of the glass base, but the bow height requirement of this approach does not reach the range of large radius bends, and other means are needed to be interposed to continue to obtain a larger bow height.
In the step S3, the homogenizing temperature and homogenizing time are set according to the thickness of the installed toughened glass, the heating time of the glass with the thickness of 6-19 mm is 30-270 min, the heat preservation time is 90-150 min, the cooling time is 15-135 min, the bow height value is increased by 9-15mm/m after homogenizing treatment, and the accumulated bow height reaches 12-18mm/m.
The bow tightening in the step S2 and the step S4 is to bind the bow tightening belt parallel to the curved edge of the glass, and the bow tightening belt is tensioned according to the required bow height, so that the glass is bent to obtain the required bow height;
the binding device with a tensioner is preferably used for binding, and when a plurality of bow tightening belts are used, the binding belts are uniformly distributed, and are tensioned through the tensioner, so that the glass obtains a certain bending arc.
The film in the step S4 is a PVB or SGP film.
The step S4 of preparing laminated glass laminated sheets comprises the following steps:
b1: combining two pieces of glass with a film, manufacturing a vacuum bag, putting the glass into the vacuum bag, and sealing;
b2: binding the bow tightening belt parallel to the curved edge, and tightening the bow of the glass by using the bow tightening belt;
b3: obtaining a target bow height, and performing pre-vacuumizing treatment on the vacuum bag at normal temperature;
b4: putting the pre-vacuumized laminated glass into an autoclave, and performing hot vacuumization operation;
b5: performing a kettle burning operation according to the autoclave curve;
b6: after autoclave treatment, the bow is relieved, the vacuum bag is removed, and finally the required product is obtained.
The bonding process of the glass in the step B1 is as follows: two pieces of glass with bow height close to that of bent steel are selected from the homogenized glass, a cut adhesive film is paved on the bottom glass, the other glass is put on the glass, a vacuum bag is sleeved on the glass, and the edge of the glass is sealed by the vacuum bag.
The time of vacuumizing in the step B3 is 10-30 min;
and B4, heating to 95-110 ℃ under the condition that the autoclave is not pressurized, and continuously pumping for 20min after reaching the temperature.
B2, setting a plurality of tightening bows at the straight edge of the glass exceeding 1 m;
in order to prevent W-shaped tightening marks on the straight line edges caused by the tightening of the step S2 and the step S4, a plurality of tightening bands can be arranged on the straight line edges of the glass exceeding 1m, and 1 tightening band is preferably arranged every 0.8 m.
The bow tightening strap is a binding strap, cotton rope or steel belt, and preferably a binding strap with a tensioner is used.
The bow tightening belt or the steel belt is used for binding parallel to the curved edge of the glass, the bow tightening belt or the steel belt is tensioned according to the required bow height, the glass is enabled to obtain the bending of the required bow height, and the binding is preferably carried out by a binding device with a tensioner, so that the bow height can be adjusted conveniently and the glass can be reused. In order to make the stress even, when a plurality of bow tightening belts are used, the binding belts are tensioned through a tensioner from even distribution, so that the glass obtains a certain bending arc.
In the step S4, the homogenizing temperature and homogenizing time are set according to the thickness of the installed toughened glass, the heating time of the glass with the thickness of 6-19 mm is 30-270 min, the heat preservation time is 90-150 min, the cooling time is 15-135 min, the bow height value is increased by 9-15mm/m after homogenizing treatment, and the accumulated bow height reaches 12-18mm/m. This process completes the slight movement of the particles, creating a new steady state. However, it is known that the homogenization temperature is generally within the range of (290.+ -. 10) ℃ and must not exceed 320 ℃ but is not lower than 280 ℃, the particle movement is very limited, and the stress value of the glass is reduced by the long-term high-temperature homogenization. Therefore, we can only obtain the level of relative movement, and cannot get the stable state which is finally obtained in one step.
The film in the step S1 is a PVB or SGP film. The film itself has a certain adhesive strength and its own anti-yielding strength. The glass bending is influenced by the anti-yield strength of the film, so that the aim of realizing large-radius production is fulfilled. The film in step S1 is an SGP film.
The key point in the process is that the glass must be placed in a vacuum bag for bowing, and then the glass must be subjected to vacuum. Meanwhile, the bow cannot be drawn after rolling because of the lower bow height, and if the bow is drawn after rolling, larger rebound occurs. Meanwhile, because the glass has a certain external mechanical force, heat extraction is needed, otherwise, heat resistance is reduced. Because the bow heights of the homogenized glass cannot be completely consistent, the glass with the bow height close to that of the homogenized glass is selected for interlayer processing, and the interlayer quality is ensured.
The scheme uses a flat steel method, and the glass with large arc length and large radius is processed by a tempering-homogenizing-interlayer 3 procedure relay method. Firstly, the glass is blown and bent in a very cold blowing balance mode in the tempering process, and at the moment, the glass is controlled according to the upper limit of 3mm of the bow height per meter, and the requirements of national standard bow degree of 0.3% are referred. Secondly, continuing to draw the bow by using a homogenizing treatment method, obtaining the bow height of 9-15mm/m, wherein the maximum accumulated bow height is 12-18mm/m, and taking 3m arc length glass as an example, the maximum bow height after homogenizing treatment is 56.1mm.
Accounting according to the waiting radius at this time, the radius is already in the range of approximately 18 m. Finally, a laminated glass product with the radius larger than 10m can be obtained by using a guarantee of 10mm per meter in a laminated bow tightening mode to form a planned bow Gao Wan arc glass product.
Compared with the prior art, the curved glass processing method has the following beneficial effects:
1. according to the invention, the processing of the large-arc-length and large-radius laminated glass is realized by the three procedures of tempering, homogenizing treatment and continuous bending of the laminated glass, and firstly, the tempering procedure uses an extremely cold blowing balance mode to blow and bend the glass. And homogenizing after the bow is drawn, and finally obtaining the large-bending-arc large-radius toughened laminated glass product by using the laminated bow.
2. The tempering procedure obtains tempered glass with the bow height of 3mm corresponding to each meter of arc length; the homogenizing furnace obtains the bow height of 9-15mm/m, and the accumulated bow height reaches 12-18mm/m.
3. In the interlayer process, an interlayer bow tightening mode is used for processing, wherein the change of the corresponding bow height of each meter of arc length is not higher than 10mm; the bow tightening belt used in the homogenizing treatment and interlayer process can be strapping belts, cotton ropes or steel belts, and the strapping belts are preferred; in the interlayer process, after the glass is placed into a vacuum bag, the bow is firstly drawn, and then the vacuum is pumped; in order to prevent W-shaped tightening marks on the straight line edge caused by tightening the bows, a plurality of tightening bows are arranged on the straight line edge of the glass exceeding 1 m.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute an undue limitation on the invention. In the drawings:
FIG. 1 is a process flow diagram of a curved glass processing method of the present invention;
FIG. 2 is a graph showing the viscosity change of the conventional annealed glass after soda lime silica glass fiber reinforced plastic of example 1 of the present invention;
FIG. 3 is a graph showing the homogenization treatment in example 2 of the present invention;
FIG. 4 is a graph showing the actual measurement of the stress curve observed for the glass in example 2 of the present invention;
FIG. 5 is a graph showing stress curves before glass processing in example 2 of the present invention;
FIG. 6 is a graph showing stress curves after glass processing in example 2 of the present invention;
Detailed Description
Unless defined otherwise, technical terms used in the following examples have the same meaning as commonly understood by one of ordinary skill in the art to which the inventive concepts pertain. The test reagents used in the following examples, unless otherwise specified, are all conventional biochemical reagents; the experimental methods are conventional methods unless otherwise specified.
The invention will be described in detail with reference to the following examples and drawings.
Example 1
The viscosity eta is not only a function of temperature, but also is related to the heat history, the sodium-calcium-silicon glass reinforced plastic and the conventional annealed glass are insulated at the same temperature, the phenomena of increasing and decreasing with the increase of time respectively appear, and finally the balance value is also tended, as shown in figure 2.
As can be seen from the above FIG. 2, the viscosity of the quenched tempered glass changes from low to high over a range, which also allows us to change glass surface particles at relatively low ambient temperatures. Our conventional lower temperature heat treatment environment is a homogeneous treatment process. The homogenization treatment is also called hot dipping treatment and commonly called "detonation". The homogenizing treatment is to heat the toughened glass to 290+/-10 ℃ and keep the temperature for a certain time, so that the nickel sulfide can rapidly finish crystal phase conversion and glass particle movement in the toughened glass, a certain bending arc is obtained, the toughened glass which is possibly self-exploded after being originally used is artificially broken in a hot dip furnace of a factory in advance, and the self-explosion of the toughened glass in use after installation is reduced.
According to the research on the principle, an experimental scheme of glass particle movement is formulated, the main idea is that glass is bent by external force and put into a homogenizing treatment furnace for homogenizing treatment, and the change value of bending bow height is checked after the homogenizing treatment is finished, so that the feasibility of the technical route is measured.
Example 2
Tempering the glass, and controlling the glass to a bending-up level by using blowing balance. The air blowing balance can adjust the cooling rate of the upper surface and the lower surface of the glass by adjusting the air blowing amount in the upper air grid and the lower air grid so as to control the bending degree of the glass. The air blowing balance of the lower surface of the glass is set to be 51-60%, as shown in table 1, so that the glass is bent upwards, and the bending degree is controlled within 3mm per meter arc length. This step is to obtain the bending direction of the glass base, but the bow height requirement of this approach does not reach the range of large radius bends, and other means are needed to be interposed to continue to obtain a larger bow height.
TABLE 1 relationship between glass length and the balance of blowing up and down
The glass is forced to be arched according to the bent arc edge, and at the moment, the glass can be subjected to additional mechanical stress besides the self toughening stress. At the macroscopic level, the stress counteracts part of the compressive stress by relaxing the outside of the bow, and the extrusion of the inside of the bow increases part of the compressive stress. At the appearance level, the outer side of the bow would tend to stretch against the shrink dot and the inner side would tend to squeeze. By utilizing the characteristic that toughened glass has relatively low viscosity in a certain temperature range, the particle theory has the possibility of tiny movement under the condition of low relative viscosity. In addition, the device is driven by external force to move to a new stable state, and finally the target effect of expansion of the bow height is obtained.
The bow tightening belt is used for binding in parallel with the curved edge of the glass, the bow tightening belt is tensioned according to the required bow height, the glass is enabled to obtain the bending of the required bow height, and the bow tightening belt is preferably a binding device with a tensioner, so that the bow height can be adjusted conveniently and the glass can be reused. In order to make the stress even, when a plurality of bow tightening belts are used, the binding belts are tensioned through a tensioner from even distribution, so that the glass obtains a certain bending arc.
And (5) placing the toughened glass with the bow in a homogenizing furnace for homogenizing treatment. This process completes the slight movement of the particles, creating a new steady state. However, it is known that the homogenization temperature is generally within the range of (290.+ -. 10) ℃ and must not exceed 320 ℃ but is not lower than 280 ℃, the particle movement is very limited, and the stress value of the glass is reduced by the long-term high-temperature homogenization. Therefore, we can only obtain the level of relative movement, and cannot get the stable state which is finally obtained in one step. The hot dipping temperature and the hot dipping time are set according to the thickness of the toughened glass, the heating time of the glass with the thickness of 6-19 mm is 30-270 min, the heat preservation time is 90-150 min (generally 120 min), the cooling time is 15-135 min, the thinner the glass, the shorter the time, and the treatment process is shown in a homogenizing treatment graph 3. After homogenization treatment, the bow height value is increased by 9-15mm/m.
Specific examples are shown in Table 2.
TABLE 2 variation in arch height before and after homogenization/mm
As is clear from table 2, the bow height was changed to a certain extent in the homogeneous treatment environment. It is shown that the particles are indeed displaced, and the degree of displacement and the value of the bow height after the bow is drawn are changed in a trend, but a new steady state is not achieved.
As shown in fig. 4, the stress curves were observed before and after the comparative glass was treated in this manner, and as shown in fig. 5 and 6, the curves were found to slightly change, but the change range was extremely small, and the change in the measured stress value was reduced by 3MPa.
At this time, after the homogenization treatment was completed, the bow was loosened, and the glass was found to have springback, but not to the original level. And through parallel experimental data analysis, the rebound has a relation with the depth when the bow is drawn, but no specific linear relation exists, and only a trend relation exists.
Therefore, through the experimental study, it was found that the homogenized glass did change the glass bending value, but there was also a large rebound, the target radius could not be accurately obtained, and the trend could be increased. This approach can be used as an intermediate step.
Example 3
The glass must be placed in a vacuum bag for bowing, and the bow must be trimmed and then evacuated. Meanwhile, the bow cannot be drawn after rolling because of the lower bow height, and if the bow is drawn after rolling, larger rebound occurs. Meanwhile, because the glass has a certain external mechanical force, heat extraction is needed, otherwise, heat resistance is reduced. Because the bow heights of the homogenized glass cannot be completely consistent, the glass with the bow height close to that of the homogenized glass is selected for interlayer processing, and the interlayer quality is ensured.
Table 3: large span (arch height difference is larger than 15 mm/m) arch tightening experimental result
Experiments at this stage show that, as shown in table 3, the laminated glass bow made in this way has high accuracy, and the deviation can meet national standard and internal control mark, but the glass tension is too large because the laminated bow is too large. And (3) carrying out homogenizing treatment for 2 hours at 100 ℃ in a homogenizing furnace for heat resistance test, wherein the side part is provided with glue spreading in the testing process, and the glue spreading depth exceeds 12mm and reaches the range of 20mm at maximum. Therefore, the processing method is not suitable for processing the curved glass with the curved radius smaller than 11m, so that the sample wafer is prepared again for testing after the height of the bow is reduced.
Table 4 results of small span arch tightening experiments
As shown in the graph 4, the radius span is not too large through the small radius test, and an empirical formula is found according to the 3m glass test, wherein the variation value of the bowing per meter of arc length is preferably smaller than 10mm, otherwise, the heat resistance is poorer. Meanwhile, the edge of the sandwich glass of SGP has fewer bubbles, is nearly circular, and has better heat-resistant effect than PVB glass.
The scheme uses a flat steel method, and the glass with large arc length and large radius is processed by a tempering-homogenizing-interlayer 3 procedure relay method. Firstly, the glass is blown and bent in a very cold blowing balance mode in the tempering process, and at the moment, the glass is controlled according to the upper limit of 3mm of the bow height per meter, and the requirements of national standard bow degree of 0.3% are referred. Secondly, continuing to draw the bow by using a homogenizing treatment method, obtaining the bow height of 9-15mm/m, wherein the maximum accumulated bow height is 12-18mm/m, and taking 3m arc length glass as an example, the maximum bow height after homogenizing treatment is 56.1mm.
Accounting according to the waiting radius at this time, the radius is already in the range of approximately 18 m. Finally, a laminated glass product with the radius larger than 10m can be obtained by using a guarantee of 10mm per meter in a laminated bow tightening mode to form a planned bow Gao Wan arc glass product.
The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A method for processing curved glass is characterized in that: the method comprises the following steps:
s1: tempering the glass, and controlling the glass to be bent upwards by using blowing balance;
s2: the glass is parallel to the bending edge for bending, and the glass is subjected to additional mechanical stress besides the self toughening stress;
s3, placing the toughened glass with the bow in a homogenizing furnace for homogenizing treatment;
s4: preparing laminated glass laminated sheets, bonding two sheets of glass through a rubber sheet, and introducing the bonded two sheets of glass into an autoclave for treatment after bow tightening to finish the preparation of the curved laminated glass;
in the step S1, the glass is controlled to be bent up to a horizontal degree by using air blowing balance;
the air blowing balance of the lower surface of the glass is set to be 51-60%, so that the glass is bent upwards and horizontally, and the bending degree is controlled within 3mm per meter arc length;
the bow tightening in the step S2 and the step S4 is to bind the bow tightening belt parallel to the curved edge of the glass, and the bow tightening belt is tensioned according to the required bow height, so that the glass is bent to obtain the required bow height;
after homogenizing treatment, the arch height is increased by 9-15mm/m, and the accumulated arch height reaches 12-18mm/m;
the step S4 of preparing laminated glass laminated sheets comprises the following steps:
b1: combining two pieces of glass with a film, manufacturing a vacuum bag, putting the glass into the vacuum bag, and sealing;
b2: binding the bow tightening belt parallel to the curved edge, and tightening the bow of the glass by using the bow tightening belt;
b3: obtaining a target bow height, and performing pre-vacuumizing treatment on the vacuum bag at normal temperature;
b4: putting the pre-vacuumized laminated glass into an autoclave, and performing hot vacuumization operation;
b5: performing a kettle burning operation according to the autoclave curve;
b6: after autoclave treatment, the bow is relieved, the vacuum bag is removed, and finally the required product is obtained.
2. The method for processing curved glass according to claim 1, wherein: in the step S3, the homogenizing temperature and homogenizing time are set according to the thickness of the installed toughened glass, the temperature rise time of the 6-19 mm glass is 30-270 min, the heat preservation time is 90-150 min, and the cooling time is 15-135 min.
3. The method for processing curved glass according to claim 1, wherein: the film in the step S4 is a PVB or SGP film.
4. The method for processing curved glass according to claim 1, wherein: the bonding process of the glass in the step B1 is as follows: two pieces of glass with bow height close to that of bent steel are selected from the homogenized glass, a cut adhesive film is paved on the bottom glass, the other glass is put on the glass, a vacuum bag is sleeved on the glass, and the edge of the glass is sealed by the vacuum bag.
5. The method for processing curved glass according to claim 1, wherein: the time of vacuumizing in the step B3 is 10-30 min;
and B4, heating to 95-110 ℃ under the condition that the autoclave is not pressurized, and continuously pumping for 20min after reaching the temperature.
6. The method for processing curved glass according to claim 1, wherein: and in the step S2 and the step S4, a plurality of tightening bows are arranged at the straight line edges of the glass exceeding 1 m.
7. The method for processing curved glass according to claim 6, wherein: the straight edge of the glass exceeds 1m, and 1 arch tightening belt is arranged every 0.8 m.
8. The method for processing curved glass according to claim 6, wherein: the bow tightening belt is a binding belt, a cotton rope or a steel belt.
9. The method for processing curved glass according to claim 6, wherein: the bow tightening strap uses a strapping strap with a tensioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111645453.6A CN114315110B (en) | 2021-12-29 | 2021-12-29 | Curved glass processing method |
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