CN107382036A - A kind of hot bending method of laminated glass on express locomotive - Google Patents
A kind of hot bending method of laminated glass on express locomotive Download PDFInfo
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- CN107382036A CN107382036A CN201710755468.5A CN201710755468A CN107382036A CN 107382036 A CN107382036 A CN 107382036A CN 201710755468 A CN201710755468 A CN 201710755468A CN 107382036 A CN107382036 A CN 107382036A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
- C03B23/025—Re-forming glass sheets by bending by gravity
- C03B23/0258—Gravity bending involving applying local or additional heating, cooling or insulating means
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- 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
- C03C27/10—Joining glass to glass by processes other than fusing with the aid of adhesive specially adapted for that purpose
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- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention relates to laminated glass technical field, the hot bending method of the laminated glass particularly on express locomotive, the specifically laminated glass on a kind of express locomotive.The hot bending method comprises the following steps：At least two pieces of glass substrates are placed on bending mould；At least one piece auxiliary heating cover plate is placed into topmost on one piece of glass substrate；Heated from top, at least two pieces of glass substrates is reached softening temperature and is fitted on bending mould；At least two pieces of glass substrates are cooled down, at least one piece auxiliary heating cover plate is then removed and obtains at least two pieces of bending glass sheets.The present invention can be on the express locomotive of requirement such as the big sphere of hot bending, hyperbolicity laminated glass, and heat radiation can be filtered and buffered, reduce and the direct heat of one piece of glass substrate topmost is impacted, avoid one piece of the top glass substrate when at least two pieces of glass substrates while hot bending that light distortion phenomenon occurs, ensure that the optical quality of glass substrate.
Description
Technical field：
The present invention relates to laminated glass technical field, the laminated glass particularly on express locomotive is specifically a kind of high
The hot bending method of laminated glass on fast locomotive.
Background technology：
With the fast development of China's locomotive industry, the EMUs speed of express locomotive such as China's independent development has reached
To 160,000 ms/h, 200,000 ms/h, 250,000 ms/h, 300,000 ms/h even 350,000 ms/h and more than,
Correspondingly, the particularly windshield of the glass pane on express locomotive needs higher security performance, and under prior art conditions,
Merely far can not also meet demand by the mechanical strength of reinforced glass substrate；Simultaneously as passenger to the outward appearance of glass pane,
The requirement more and more higher of visual effect and optical quality etc..According to the hot bending method of existing laminated glass, be by
Divided glass substrate, which is placed on mould, carries out hot bending, and the heat of heating is from the glass substrates of the superiors piecewise to the bottom
Glass substrate conducted heat, the glass substrates of the superiors receives heat radiation simultaneously and the mode of heat transfer heats, but down
Second layer glass substrate only by the superiors glass substrate heat transfer, then third layer glass substrate down is only by
The heat transfer of two layers of glass substrate, other glass substrates below are all the heat biographies for receiving its adjacent last layer glass substrate
Lead；In same equipment, the glass substrate of the superiors is easily heated to soften, and is used due to the laminated glass on express locomotive
Thickness of glass substrate is thicker to cause gross thickness more to thicken, and in order to ensure the hot bending of undermost glass substrate, often leads to
The glass substrate of the superiors softens in advance, and the silica flour set between glass substrate or the little particle debris do not cleaned out are just
It can cause the glass substrate local deformation of the superiors, so as to form light distortion, cause optics bad.
In the prior art, patent of invention CN101155762A discloses a kind of method by least one piece glass bending, should
Method comprises the steps：These glass are placed on the transfer gantry of first row dolly, the dolly is in loading area and transfer
Run between area, during these glass are transported into transition range, heat them to flexure temperature and make their bendings or prebuckling,
And these glass are transferred on the transfer gantry of secondary series dolly, transfer gantry (T2) is different from the first transfer gantry
, secondary series dolly is run between transition range and last cooling zone；Obviously, this method is only applicable to heating bending glass of automobile
Glass, it is impossible to the laminated glass on hot bending express locomotive；And to disclose a kind of bullet train special by patent of invention CN103553306A
The preparation method of high-strength armoured-glass, it comprises the following steps：(1) ordinary plate glass is cut, edging, be put into hot bending into
Hot bending is carried out in type stove corresponding mould；(2) sylvite, sodium salt and cesium salt are mixed to form mixture, first preheated, then heated up,
It is sufficiently stirred, required fused salt is made；(3) glass after shaping is put into stove of exchanging fused salt groove, carries out ion exchange, completed
Chemical tempering；(4) glass after chemical tempering is put into heating furnace and heated, placed into quick cooling furnace and carry out at chilling
Reason, Xu's cold treatment is carried out subsequently into secondary cooling stove, finally obtains the monolithic curved glass of high intensity；(5) by outside to inside dividing
Not by the monolithic curved glass of outer layer, glass conductive heating film, the monolithic curved glass of nexine and anti-splashing film form high intensity,
Four interlayer bullet train Special high-strength safety glass of effective demisting defrosting；Wherein outer layer monolithic curved glass and nexine monolithic
Curved glass is the monolithic curved glass for the high intensity that step (4) obtains, and shape size is identical；This method uses first hot bending
The mode of chemical tempering is molded again, and is only capable of manufacture to include the sandwiched product of two sheet glass, step is complicated, it is impossible to meets energy-conservation
The requirement of environmental protection.
The content of the invention：
The technical problems to be solved by the invention are to be directed to interlayer of the above-mentioned prior art on hot bending express locomotive
Form light distortion in the presence of easy during glass and cause that optics is bad, processing step complicated difficult is to meet three and with top glass substrate
A kind of the shortcomings of hot bending, there is provided the hot bending method of the laminated glass on express locomotive.
The technical scheme adopted by the invention to solve the technical problem is that：A kind of hot bending of laminated glass on express locomotive
Forming method, the laminated glass on the express locomotive include at least two pieces of bending glass sheets, it is characterised in that：The hot bending
Method comprises the following steps,
Step 1：Prepare at least two pieces of glass substrates, and they are placed on bending mould；
Step 2：Prepare at least one piece auxiliary heating cover plate, and be placed into topmost on one piece of glass substrate, it is described
The size of auxiliary heating cover plate is consistent with the size of one piece of glass substrate topmost；
Step 3：From top at least one piece auxiliary heating cover plate and at least two pieces of glass substrates on bending mould
Heated, at least two pieces of glass substrates is reached softening temperature and is fitted under gravity on bending mould；
Step 4：At least two pieces of glass substrates for completing hot bending are cooled down, at least one piece auxiliary is then removed and adds
Hot cover plate obtains at least two pieces of bending glass sheets.
Further, in step 1 before glass substrate is placed on bending mould, to adjacent two pieces of glass bases
High temperature resistant silica flour is sprayed between plate.
Further, one piece of glass substrate most thick at least in two pieces of glass substrates contacts with bending mould.
Further, the outline of the glass substrate contacted with the bending mould is more than the outer of bending mould
Profile.
Further, at least two pieces of glass substrates are the thickness of chemically toughened glass and/or at least two pieces glass substrates
It is at least 3mm.
Further, the material of the auxiliary heating cover plate is selected from least one of glass, fiber, metal and alloy.
Further, the softening temperature of the auxiliary heating cover plate is more than or equal to the softening temperature of glass substrate.
Further, the thermal conductivity factor of the auxiliary heating cover plate is more than or equal to the thermal conductivity factor of glass substrate.
Further, auxiliary heating cover plate softens or than topmost one simultaneously with one piece of glass substrate topmost in step 3
The more late softening of block glass substrate.
Further, heating process also includes holding stage in step 3.
Further, also include in step 3 from below at least one piece on bending mould auxiliary heating cover plate and
At least two pieces of glass substrates are heated.
Further, at least one piece auxiliary heating is set up between bending mould and bottom one piece of glass substrate
Cover plate.
Meanwhile the present invention can also provide a kind of hot bending method of the laminated glass on express locomotive, the high speed
Laminated glass on locomotive includes at least two pieces of bending glass sheets, it is characterised in that：The hot bending method comprises the following steps,
Step 1：Prepare at least two pieces of glass substrates, and they are placed on bending mould；
Step 2：Prepare high temperature resistant white powder, and it is uniformly sprayed onto topmost on one piece of glass substrate, it is described resistance to
The fusing point of high temperature white powder is more than the fusing point of glass substrate；
Step 3：At least two pieces of glass substrates on bending mould are heated from top, make at least two blocks of glass
Substrate reaches softening temperature and fitted under gravity on bending mould；
Step 4：At least two pieces of glass substrates for completing hot bending are cooled down, then remove high temperature resistant white powder
Obtain at least two pieces of bending glass sheets.
Further, in step 1 before glass substrate is placed on bending mould, to adjacent two pieces of glass bases
High temperature resistant silica flour is sprayed between plate.
Further, one piece of glass substrate most thick at least in two pieces of glass substrates contacts with bending mould.
Further, the outline of the glass substrate contacted with the bending mould is more than the outer of bending mould
Profile.
Further, at least two pieces of glass substrates are the thickness of chemically toughened glass and/or at least two pieces glass substrates
It is at least 3mm.
Further, the high temperature resistant white powder is selected from least one of silica flour and talcum powder.
Further, the sprinkling thickness of high temperature resistant white powder is at least 0.5mm in step 2.
Further, heating process also includes holding stage in step 3.
Due to taking above-mentioned technical proposal, it has the advantages that the present invention：
The hot bending method of laminated glass on express locomotive of the present invention, being capable of the big sphere of hot bending, double
Laminated glass on the express locomotive of the requirements such as curvature, and aid in heating cover plate or sprinkling high temperature resistant white powder by setting
End, heat radiation can be filtered and buffered, reduced and the direct heat of one piece of glass substrate topmost is impacted, so as to keep away
Topmost light distortion phenomenon occurs for one piece of glass substrate when exempting from least two pieces of glass substrates while hot bending, and then ensure that glass
The optical quality of glass substrate.
Brief description of the drawings：
Fig. 1 is the schematic diagram that three pieces of glass substrates are placed with bending mould of the present invention；
Fig. 2 is the schematic diagram of the three pieces of bending glass sheets finally given on bending mould of the present invention.
Embodiment：
Present disclosure is described further below in conjunction with accompanying drawing.
As depicted in figs. 1 and 2, the laminated glass on express locomotive of the present invention includes at least two pieces of bending glass sheets
And the thermoplastic polymer film being folded between adjacent two pieces of bending glass sheets and at least a piece of anti-splashing film；Although in Fig. 2
Three pieces of bending glass sheets are respectively illustrated, i.e., upper bending glass sheet 1, intermediate bent glass shape 2 and lower bending glass sheet 3, by Fig. 2
In three pieces of bending glass sheets and necessary amount thermoplastic polymer film and anti-splashing film it is i.e. available by subsequent production
Laminated glass on express locomotive, but it is understood that, hot bending method of the present invention is readily applicable to include
Laminated glass on the express locomotive of two pieces of bending glass sheets；The hot bending method of laminated glass on the express locomotive includes
Following steps：
Step 1：Prepare at least two pieces of glass substrates, and they are placed on bending mould 4；
, it is necessary to be carried out clearly to the surface of every piece of glass substrate before glass substrate is placed on bending mould 4
It is clean, and check and whether there is impurity on glass substrate, and confirm that the outward appearance of glass substrate can not be defective；
Wherein, the bending mould 4 includes forming ring, and the forming ring is supported on the surrounding edge of glass substrate,
And there is the curvature consistent with the bending glass sheet of final hot bending, at least two pieces of glass substrates are placed to hot bending mould
After on tool 4, with being heated to soften, at least two pieces of glass substrates from gravity by being molded, the glass that is contacted with the forming ring
The final surrounding edge of glass substrate is fitted on the forming ring, obtains the bending glass sheet of final hot bending；
After having checked, to high temperature resistant silica flour is sprayed between adjacent two pieces of glass substrates, pay attention to occurring during dusting
The non-uniform phenomenons such as caking, drawing lines；After the completion of dusting, each piece of glass substrate is placed into bending mould successively as requested
On 4, wherein one piece of most thick glass substrate contacts with bending mould 4；Meanwhile the folded difference between each piece of glass substrate is necessary
Meet the requirements.
In order to prevent to fall during hot bending mould phenomenon, i.e., glass substrate size be less than die size and from hot bending
Dropped on mould, the outline of the glass substrate preferably contacted with the bending mould 4 is more than bending mould 4
Outline, specifically more than bending mould 4 forming ring outline.
In the present invention, the express locomotive typically refers to more than 160,000 ms/h of train, such as 200 kms/small
When, 250,000 ms/h, 300,000 ms/h, the high-speed train of 350,000 ms/h and the above.
Wherein, at least two pieces of glass substrates are chemically toughened glass, and on express locomotive preferably at least two during use
The thickness of block glass substrate is at least 3mm, and one piece of particularly wherein most thick glass substrate is arranged on the outside of express locomotive.
In Fig. 1, three pieces of glass substrates, i.e. top glass substrate 11, intermediate glass substrate are placed with bending mould 4
12 and lower glass substrate 13.
Step 2：Prepare at least one piece auxiliary heating cover plate 5, and they are placed into topmost on one piece of glass substrate, institute
The size for stating auxiliary heating cover plate 5 is consistent with the size of one piece of glass substrate topmost；
By setting at least one piece auxiliary heating cover plate 5, when can avoid at least two pieces of glass substrates while hot bending
Topmost light distortion phenomenon occurs for one piece of glass substrate, because at least one piece auxiliary heating cover plate 5 can be to heating furnace silk 6
Heat radiation filtered and buffered, reduce and the direct heat of one piece of glass substrate topmost impacted, so as to ensure that to
The optical quality of few two pieces of glass substrates；Preferably, the material of the auxiliary heating cover plate is selected from glass, fiber, metal and conjunction
At least one of gold；Likewise it is preferred that the softening temperature of the auxiliary heating cover plate is more than or equal to the softening temperature of glass substrate
Degree, the thermal conductivity factor of the auxiliary heating cover plate are more than or equal to the thermal conductivity factor of glass substrate.
Step 3：From top at least one piece auxiliary heating cover plate 5 and at least two pieces of glass bases on bending mould 4
Plate is heated, and at least two pieces of glass substrates is reached softening temperature and is fitted under gravity on bending mould 4；
In order to ensure that auxiliary heating cover plate 5 does not have an impact to the hot bending process of glass substrate, the auxiliary heating
Cover plate 5 softens with one piece of glass substrate topmost or than one piece of more late softening of glass substrate topmost simultaneously.
In order to prevent the generation of glass substrate splitting, preferably heating process also includes holding stage, so since can also
Prevent bulge phenomenon from causing optics bright band.
Preferably, can also be from below at least one piece auxiliary heating cover plate 5 on bending mould 4 and at least two pieces
Glass substrate is heated, can also be in bending mould 4 and bottom one piece of glass substrate when also including lower section heating
Between set up at least one piece auxiliary heating cover plate 5.
Step 4：At least two pieces of glass substrates for completing hot bending are cooled down, at least one piece auxiliary is then removed and adds
Hot cover plate 5 obtains at least two pieces of bending glass sheets；
Meanwhile in order to be filtered and be buffered to heat radiation, so as to reduce the direct heat to one piece of glass substrate topmost
Stroke, except directly can also can on the glass substrate spray one by least one piece auxiliary heating cover plate 5 of above-mentioned setting
Determine the high temperature resistant white powder of thickness, it is specific as follows：
The present invention can also provide a kind of hot bending method of the laminated glass on express locomotive, on the express locomotive
Laminated glass include at least two pieces of bending glass sheets, it is characterised in that：The hot bending method comprises the following steps,
Step 1：Prepare at least two pieces of glass substrates, and they are placed on bending mould；
, it is necessary to be carried out clearly to the surface of every piece of glass substrate before glass substrate is placed on bending mould 4
It is clean, and check and whether there is impurity on glass substrate, and confirm that the outward appearance of glass substrate can not be defective；
Wherein, the bending mould 4 includes forming ring, and the forming ring is supported on the surrounding edge of glass substrate,
And there is the curvature consistent with the bending glass sheet of final hot bending, at least two pieces of glass substrates are placed to hot bending mould
After on tool 4, with being heated to soften, at least two pieces of glass substrates from gravity by being molded, the glass that is contacted with the forming ring
The final surrounding edge of glass substrate is fitted on the forming ring, obtains the bending glass sheet of final hot bending；
After having checked, to high temperature resistant silica flour is sprayed between adjacent two pieces of glass substrates, pay attention to occurring during dusting
The non-uniform phenomenons such as caking, drawing lines；After the completion of dusting, each piece of glass substrate is placed into bending mould successively as requested
On 4, wherein one piece of most thick glass substrate contacts with bending mould 4；Meanwhile the folded difference between each piece of glass substrate is necessary
Meet the requirements.
In order to prevent to fall during hot bending mould phenomenon, i.e., glass substrate size be less than die size and from hot bending
Dropped on mould, the outline of the glass substrate preferably contacted with the bending mould 4 is more than bending mould 4
Outline, specifically more than bending mould 4 forming ring outline.
In the present invention, the express locomotive typically refers to more than 160,000 ms/h of train, such as 200 kms/small
When, 250,000 ms/h, 300,000 ms/h, the high-speed train of 350,000 ms/h and the above.
Wherein, at least two pieces of glass substrates are chemically toughened glass, and on express locomotive preferably at least two during use
The thickness of block glass substrate is at least 3mm, and one piece of particularly wherein most thick glass substrate is arranged on the outside of express locomotive.
In Fig. 1, three pieces of glass substrates, i.e. top glass substrate 11, intermediate glass substrate are placed with bending mould 4
12 and lower glass substrate 13.
Step 2：Prepare high temperature resistant white powder, and it is uniformly sprayed onto topmost on one piece of glass substrate, it is described resistance to
The fusing point of high temperature white powder is more than the fusing point of glass substrate；
By the way that directly topmost, uniformly sprinkling high temperature resistant white powder, sprinkling reach certain thickness on one piece of glass substrate
Surface is can't see the body of glass substrate, so as to reflect back heat radiation by white, avoid unnecessary heat radiation
The lower surface of glass substrate is transmitted to, reduces the heater meeting of the lower surface of one piece of glass substrate topmost, it is unnecessary so as to reduce
Injury of the heat radiation to glass substrate, and then the heat radiation of heating furnace silk 6 can be filtered and buffered, reduced to most
The direct heat impact of one piece of glass substrate above, so as to ensure that the optical quality of at least two pieces glass substrates；Preferably, institute
State high temperature resistant white powder and be selected from least one of silica flour and talcum powder, be certainly not limited to this, can also select as needed
Other high temperature resistant white powders.Meanwhile in order to ensure the effect of heat radiation reflection, the sprinkling of preferably described high temperature resistant white powder
Thickness is at least 0.5mm.
Step 3：At least two pieces of glass substrates on bending mould are heated from top, make at least two blocks of glass
Substrate reaches softening temperature and fitted under gravity on bending mould；
In order to prevent the generation of glass substrate splitting, preferably heating process also includes holding stage, so since can also
Prevent bulge phenomenon from causing optics bright band.
Step 4：At least two pieces of glass substrates for completing hot bending are cooled down, then remove high temperature resistant white powder
Obtain at least two pieces of bending glass sheets.
Pass through as shown in Fig. 2 three pieces of glass substrates are top glass substrate 11, intermediate glass substrate 12 and lower glass substrate 13
Hot bending, three pieces of bending glass sheets i.e. upper bending glass sheet 1, intermediate bent glass shape 2 and lower bending glass are finally formed respectively
Glass plate 3, the thermoplastic polymer film and anti-splashing film of three pieces of bending glass sheets and necessary amount can be obtained by subsequent production
Laminated glass on to express locomotive.
Above content is had to the hot bending method of the laminated glass on a kind of express locomotive of the present invention
Body is described, but the present invention is not limited to by specific embodiments described above content, so all technologies according to the present invention
Any improvement, equivalent modifications and replacement that main points are carried out etc., belongs to the scope of protection of the invention.
Claims (20)
1. a kind of hot bending method of the laminated glass on express locomotive, the laminated glass on the express locomotive is included at least
Two pieces of bending glass sheets, it is characterised in that：The hot bending method comprises the following steps,
Step 1：Prepare at least two pieces of glass substrates, and they are placed on bending mould；
Step 2：Prepare at least one piece auxiliary heating cover plate, and be placed into topmost on one piece of glass substrate, the auxiliary
The size for heating cover plate is consistent with the size of one piece of glass substrate topmost；
Step 3：From top is at least one piece auxiliary heating cover plate on bending mould and at least two pieces of glass substrates are carried out
Heating, makes at least two pieces of glass substrates reach softening temperature and fit under gravity on bending mould；
Step 4：At least two pieces of glass substrates for completing hot bending are cooled down, then remove at least one piece auxiliary heating cover
Plate obtains at least two pieces of bending glass sheets.
2. the hot bending method of the laminated glass on express locomotive according to claim 1, it is characterised in that：Step 1
In before glass substrate is placed on bending mould, between adjacent two pieces of glass substrates spray high temperature resistant silica flour.
3. the hot bending method of the laminated glass on express locomotive according to claim 1, it is characterised in that：At least two
One piece of most thick glass substrate contacts with bending mould in block glass substrate.
4. the hot bending method of the laminated glass on express locomotive according to claim 1, it is characterised in that：With it is described
The outline of the glass substrate of bending mould contact is more than the outline of bending mould.
5. the hot bending method of the laminated glass on express locomotive according to claim 1, it is characterised in that：At least two
Block glass substrate is the thickness at least 3mm of chemically toughened glass and/or at least two pieces glass substrates.
6. the hot bending method of the laminated glass on express locomotive according to claim 1, it is characterised in that：It is described auxiliary
The material of heating cover plate is helped to be selected from least one of glass, fiber, metal and alloy.
7. the hot bending method of the laminated glass on express locomotive according to claim 1, it is characterised in that：It is described auxiliary
The softening temperature of heating cover plate is helped to be more than or equal to the softening temperature of glass substrate.
8. the hot bending method of the laminated glass on express locomotive according to claim 1, it is characterised in that：It is described auxiliary
The thermal conductivity factor of heating cover plate is helped to be more than or equal to the thermal conductivity factor of glass substrate.
9. the hot bending method of the laminated glass on express locomotive according to claim 1, it is characterised in that：Step 3
Middle auxiliary heating cover plate softens with one piece of glass substrate topmost or than one piece of more late softening of glass substrate topmost simultaneously.
10. the hot bending method of the laminated glass on express locomotive according to claim 1, it is characterised in that：Step 3
Middle heating process also includes holding stage.
11. the hot bending method of the laminated glass on express locomotive according to claim 1, it is characterised in that：Step 3
In also include from below at least one piece on bending mould auxiliary heating cover plate and at least two pieces of glass substrates add
Heat.
12. the hot bending method of the laminated glass on express locomotive according to claim 11, it is characterised in that：In heat
At least one piece auxiliary heating cover plate is set up between bending mould and bottom one piece of glass substrate.
13. a kind of hot bending method of the laminated glass on express locomotive, the laminated glass on the express locomotive is included extremely
Few two pieces of bending glass sheets, it is characterised in that：The hot bending method comprises the following steps,
Step 1：Prepare at least two pieces of glass substrates, and they are placed on bending mould；
Step 2：Prepare high temperature resistant white powder, and it is uniformly sprayed onto topmost on one piece of glass substrate, the high temperature resistant
The fusing point of white powder is more than the fusing point of glass substrate；
Step 3：At least two pieces of glass substrates on bending mould are heated from top, make at least two pieces of glass substrates
Reach softening temperature and fit under gravity on bending mould；
Step 4：At least two pieces of glass substrates for completing hot bending are cooled down, high temperature resistant white powder is then removed and obtains
At least two pieces of bending glass sheets.
14. the hot bending method of the laminated glass on express locomotive according to claim 13, it is characterised in that：Step
In 1 before glass substrate is placed on bending mould, to spray high temperature resistant silica flour between adjacent two pieces of glass substrates.
15. the hot bending method of the laminated glass on express locomotive according to claim 13, it is characterised in that：At least
One piece of most thick glass substrate contacts with bending mould in two pieces of glass substrates.
16. the hot bending method of the laminated glass on express locomotive according to claim 13, it is characterised in that：With institute
The outline for stating the glass substrate of bending mould contact is more than the outline of bending mould.
17. the hot bending method of the laminated glass on express locomotive according to claim 13, it is characterised in that：At least
Two pieces of glass substrates are the thickness at least 3mm of chemically toughened glass and/or at least two pieces glass substrates.
18. the hot bending method of the laminated glass on express locomotive according to claim 13, it is characterised in that：It is described
High temperature resistant white powder is selected from least one of silica flour and talcum powder.
19. the hot bending method of the laminated glass on express locomotive according to claim 13, it is characterised in that：Step
The sprinkling thickness of high temperature resistant white powder is at least 0.5mm in 2.
20. the hot bending method of the laminated glass on express locomotive according to claim 13, it is characterised in that：Step
Heating process also includes holding stage in 3.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108409120A (en) * | 2018-04-28 | 2018-08-17 | 江苏华尚汽车玻璃工业有限公司 | A kind of aluminium silicon formed glass processing technology |
| CN111836788A (en) * | 2019-02-22 | 2020-10-27 | 科思斯格特电子有限公司 | Curved glass forming frame and curved glass forming method using same |
| CN112125503A (en) * | 2020-09-02 | 2020-12-25 | 四川旭虹光电科技有限公司 | Method for hot bending and forming curved glass |
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| CN111836788A (en) * | 2019-02-22 | 2020-10-27 | 科思斯格特电子有限公司 | Curved glass forming frame and curved glass forming method using same |
| CN112125503A (en) * | 2020-09-02 | 2020-12-25 | 四川旭虹光电科技有限公司 | Method for hot bending and forming curved glass |
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| CN107382036B (en) | 2020-10-13 |
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