CN111170624A - High-gravel-resistance glass and manufacturing method thereof - Google Patents
High-gravel-resistance glass and manufacturing method thereof Download PDFInfo
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- CN111170624A CN111170624A CN202010012558.7A CN202010012558A CN111170624A CN 111170624 A CN111170624 A CN 111170624A CN 202010012558 A CN202010012558 A CN 202010012558A CN 111170624 A CN111170624 A CN 111170624A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/04—Tempering or quenching glass products using gas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/061—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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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
- C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
- C03C21/001—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions
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Abstract
The invention discloses high-gravel-resistance glass and a manufacturing method thereof, wherein the method comprises the following steps of primary strengthening: placing the edge-ground glass in a toughening furnace at 600-700 ℃ for semitoughening with the time of 25-30s and the wind pressure of 5.0-7.0Kpa to obtain semitoughened glass; secondary strengthening: carrying out primary chemical rigidization on the semi-tempered glass at 440-450 ℃ for 4-6h and carrying out secondary chemical rigidization at 400-420 ℃, 6-8h and the cooling speed of 1-2 ℃/min to obtain tempered glass; the invention effectively and stably improves the gravel resistance and the shock resistance of the tempered glass through semi-tempering and twice chemical tempering.
Description
Technical Field
The invention relates to the technical field of glass production, in particular to high-gravel-resistance glass and a manufacturing method thereof.
Background
With the increasing of the speed of the train and the widening of the application range of the train, various severe running conditions encountered by the high-speed train emerge endlessly, and as an important component part of the high-speed train, the performance requirement of the glass is higher and higher,
the existing high-speed train glass has high impact resistance, but most of the glass has general gravel resistance, and once the glass is in a strong wind and sand weather or small hard materials are arranged in front of a train, the glass of the high-speed train is easy to crack, and at the moment, the glass needs to be replaced.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: a highly gravel-resistant glass and a method for manufacturing the same are provided to improve gravel resistance.
In order to solve the technical problems, the invention adopts a technical scheme that:
a method for manufacturing high-gravel-resistance high-speed locomotive glass comprises the following steps:
primary reinforcement: placing the edge-ground glass in a toughening furnace at 600-700 ℃ for semitoughening with the time of 25-30s and the wind pressure of 5.0-7.0Kpa to obtain semitoughened glass;
secondary strengthening: and carrying out primary chemical rigidization on the semi-tempered glass at 440-450 ℃ for 4-6h and secondary chemical rigidization at 400-420 ℃, 6-8h and the cooling speed of 1-2 ℃/min to obtain the tempered glass.
In order to solve the technical problem, the invention adopts another technical scheme as follows:
the high-gravel-resistance glass manufactured by the manufacturing method.
The invention has the beneficial effects that: the prior high-speed front-end glass is strengthened by adopting chemical toughening for one-time strengthening, but the method has great mass relation with the glass, large performance fluctuation of gravel resistance, shock resistance and the like, and the gravel resistance and shock resistance of the strengthened glass are effectively and stably improved by semi-toughening and twice chemical toughening.
Drawings
FIG. 1 is a schematic flow diagram of a method of manufacturing a highly gravel-resistant glass according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a high gravel resistance glass according to an embodiment of the present invention.
Description of reference numerals:
1. an outer tempered glass sheet; 2. a conductive wire-sandwiched film layer; 3. the inner piece of tempered glass; 4. a buffer reinforced film layer; 5. an inner tempered glass; 6. an adhesive layer; 7. splash-proof film
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1, a method for manufacturing a glass with high resistance to gravel includes the steps of:
primary reinforcement: placing the edge-ground glass in a toughening furnace at 600-700 ℃ for semitoughening with the time of 25-30s and the wind pressure of 5.0-7.0Kpa to obtain semitoughened glass;
secondary strengthening: and carrying out primary chemical rigidization on the semi-tempered glass at 440-450 ℃ for 4-6h and secondary chemical rigidization at 400-420 ℃, 6-8h and the cooling speed of 1-2 ℃/min to obtain the tempered glass.
From the above description, the beneficial effects of the present invention are: at present, the strengthening of the high-speed front-end glass is completed by one-time strengthening by chemical toughening, but the method has great mass relation with the glass, the performance fluctuation of gravel resistance, shock resistance and the like is large, and the gravel resistance and shock resistance of the strengthened glass are effectively and stably improved by semi-toughening and two-time chemical toughening.
Further, the step of secondary strengthening further comprises the following steps:
and adding an additive into the toughened molten salt for primary chemical toughening and secondary chemical toughening, wherein the additive is any combination of at least two of potassium carbonate, potassium hydroxide, aluminum oxide, cesium sulfate, potassium chloride, zinc oxide, magnesium sulfate, calcium carbonate and titanium oxide.
As can be seen from the above description, the surface stress of the current chemically tempered glass is generally between 600-900MPA, and the depth of the stress layer is between 15-40um, and the surface stress of the glass is increased to 800-1000MPA and the depth of the stress layer is increased to 40-60um by adding additives.
Further, the step of primary reinforcement comprises the following steps of:
edging: and polishing the cut glass by using a 200-240-mesh resin grinding wheel to obtain the ground glass.
As can be seen from the above description, the glass is generally subjected to smooth edge treatment by using a diamond grinding wheel of 180-200 meshes at present, but a large number of small cracks and small broken edges still exist on the smooth edge surface treated by the method, and the glass edge is polished by using a resin grinding wheel of 200-240 meshes, so that the small cracks and small broken edges of the glass edge are greatly reduced.
Further, the following steps are further included between the step of primary strengthening and the step of secondary strengthening:
molding: the self-weight forming is adopted to carry out the spherical glass forming with 180-220 mesh number of isolating powder on the semi-toughened glass.
From the above description, it can be seen that the proper mesh number of the spacer powder is selected to avoid the optical black spots easily appearing after molding.
Further, the glass is aluminosilicate glass.
From the above description, the current high-speed locomotive glass is produced by adopting soda-lime-silica glass, but after the glass is chemically toughened, the gravel resistance strength of the glass with the thickness of 6mm is about 240-280KM/h, and after the glass material is produced by changing the soda-lime-silica glass into the aluminosilicate glass, the gravel resistance strength of the glass with the thickness of 6mm can reach 320-360KM/h, so that the gravel resistance of the high-speed locomotive glass is effectively improved.
Further, the step of secondary strengthening further comprises the following steps:
sheet combination: and sequentially laminating the outer piece of tempered glass, the conductive wire clamping film layer, the inner piece of tempered glass, the buffer reinforced film layer, the inner piece of tempered glass, the adhesive layer, the anti-splashing film and the cover plate from outside to inside to obtain the laminated glass group.
Further, in the step of laminating, the thickness of the outer piece of tempered glass is 6-8mm, the thickness of the inner piece of tempered glass is 4-6mm, the main material of the conductive wire sandwiched film layer is an SGP plate, and the main material of the adhesive layer is a PVB or polyurethane film.
From the above description, it can be known that the thickness of the outer tempered glass is relatively thick, the conductive wire sandwiched film layer is made of SGP plate as the main material and mixed with one or two other materials, so that the rigidity is relatively strong, the adhesive layer is made of PVB or polyurethane film as the main material and mixed with one or two other materials, so that the flexibility is relatively strong, and the gravel resistance can be effectively improved through the lamination treatment of the glass layers with different thicknesses and the films made of different materials.
Further, the step of laminating comprises the following steps:
high pressure: and carrying out primary high pressure at the temperature of 120-150 ℃, the air pressure of 10-15bar, the time of 2-5h and the cooling speed of 1-3 ℃/min and secondary high pressure at the temperature of 100-120 ℃, the air pressure of 10-15bar, the time of 1-5h and the cooling speed of 1-3 ℃/min on the sheet-combining glass group.
From the above description, it can be seen that the use of two times of stratified high pressure avoids the occurrence of air cavities in the glass after the high pressure.
Further, the step of high pressure further comprises the following steps:
and (3) post-treatment: the cover plate is disassembled and assembled by adopting equipment with high-pressure gas and a sucker, and the cover plate and the outer piece strengthened glass, the inner piece strengthened glass and the inner piece strengthened glass are molded in steps and secondarily strengthened in steps.
As can be seen from the above description, cover plate splintering and the creation of optical bright spots or black spots can be avoided.
As shown in FIG. 2, the high-resistance gravel glass manufactured by the manufacturing method is provided.
From the above description, the beneficial effects of the present invention are: at present, the strengthening of the high-speed front-end glass is completed by one-time strengthening by chemical toughening, but the method has great mass relation with the glass, the performance fluctuation of gravel resistance, shock resistance and the like is large, and the gravel resistance and shock resistance of the strengthened glass are effectively and stably improved by semi-toughening and two-time chemical toughening.
Referring to fig. 1, a first embodiment of the present invention is:
the glass in the embodiment can be applied to high-speed trains and other scenes needing high-resistance gravel glass.
A method for manufacturing high-gravel-resistance glass comprises the following steps:
selecting materials: the glass is aluminosilicate glass;
edging: polishing the cut glass by using a 200-mesh resin grinding wheel to obtain the ground glass, and compared with the prior method of polishing the edge by using a 180-200-mesh diamond grinding wheel, the method can greatly reduce small cracks and small edges of the glass edge;
primary reinforcement: putting the edge-ground glass into a toughening furnace at 630 ℃ for semi-toughening with the time of 25s and the wind pressure of 5.0Kpa to obtain semi-toughened glass;
molding: carrying out spherical glass molding with 180 meshes of isolating powder by adopting self-weight molding on semi-tempered glass so as to avoid optical black spots easily occurring after molding;
secondary strengthening: adding additives into toughened molten salt, wherein the additives comprise 40% of potassium carbonate, 50% of aluminum oxide, 5% of cesium sulfate and 5% of magnesium sulfate, performing primary chemical rigidification on the semi-toughened glass at 440 ℃ for 4 hours and performing secondary chemical rigidification at 400 ℃ for 6 hours and at a cooling speed of 1 ℃/min to obtain the toughened glass, the additives can also comprise 35% of potassium carbonate, 46% of aluminum oxide, 1% of potassium hydroxide, 10% of cesium sulfate and 8% of zinc oxide, in other equivalent embodiments, the additives can be any combination of at least two of potassium carbonate, potassium hydroxide, aluminum oxide, cesium sulfate, potassium chloride, zinc oxide, magnesium sulfate, calcium carbonate and titanium oxide, compared with the existing one-time toughening of chemical toughening, the gravel resistance and impact resistance of the toughened glass can be effectively and smoothly improved, detecting three produced glass samples by adding additives, wherein the surface stress of the three glass samples is 864MPA, 878MPA and 856MPA respectively, the stress layer depth is 42um, 50um and 47um respectively, and the gravel resistance strength of the three glass samples is 343km/h, 347km/h and 352 km/h;
sheet combination: and sequentially laminating the outer piece of tempered glass, the conductive wire sandwiched film layer, the inner piece of tempered glass, the buffer reinforced film layer, the inner piece of tempered glass, the adhesive layer, the anti-splashing film and the cover plate from outside to inside to obtain a laminated glass group, wherein the thickness of the outer piece of tempered glass is 6mm, the thickness of the conductive wire sandwiched film layer is 0.6mm, the thickness of the inner piece of tempered glass is 6mm, the thickness of the buffer reinforced film layer is 8mm, the thickness of the inner piece of tempered glass is 4mm and the thickness of the adhesive layer is 3 mm. Meanwhile, the main material of the conductive wire clamping film layer is an SGP plate and the main material of the adhesive layer is PVB or polyurethane film, namely the conductive wire clamping film layer and the adhesive layer are formed by mixing multiple materials, wherein the SGP plate is selected as the main material of the conductive wire clamping film layer, and then other one or two materials are mixed to ensure the rigidity of the conductive wire clamping film layer;
high pressure: carrying out primary high pressure on the glass combination at the temperature of 120 ℃, the air pressure of 10bar, the time of 2h and the cooling speed of 1 ℃/min, and secondary high pressure at the temperature of 100 ℃, the air pressure of 10bar, the time of 1h and the cooling speed of 1 ℃/min, wherein the glass air cavity can be prevented from appearing after high pressure due to multiple times of high-pressure layering;
and (3) post-treatment: the cover plate is disassembled and assembled by adopting equipment mixing high-pressure air and a sucker, the cover plate, the outer piece of tempered glass, the inner piece of tempered glass and the inner piece of tempered glass are molded and secondarily reinforced together, so that the cover plate is prevented from being cracked and causing optical bright spots or black spots, and finally, the gravel resistance strength of the high-speed locomotive glass sample is 446km/h through detection.
Referring to fig. 1, the second embodiment of the present invention is:
the glass in the embodiment can be applied to high-speed trains and other scenes needing high-resistance gravel glass.
A method for manufacturing high-gravel-resistance glass comprises the following steps:
selecting materials: the glass is aluminosilicate glass;
edging: polishing the cut glass by a 220-mesh resin grinding wheel to obtain the ground glass, so that small cracks and small broken edges at the edge part of the glass can be greatly reduced;
primary reinforcement: putting the edge-ground glass into a toughening furnace at 650 ℃ for semi-toughening with the time of 28s and the wind pressure of 6.0Kpa to obtain semi-toughened glass;
molding: carrying out spherical glass molding with 200 meshes of isolating powder on semi-tempered glass by adopting self-weight molding, and selecting proper meshes of isolating powder to avoid optical black spots after molding;
secondary strengthening: adding additives into toughened molten salt, wherein the additives comprise 40% of potassium carbonate, 50% of aluminum oxide, 5% of cesium sulfate and 5% of magnesium sulfate, performing primary chemical rigidification on the semi-toughened glass at 445 ℃ for 5 hours and performing secondary chemical rigidification at 410 ℃, 7 hours and a cooling rate of 1.4 ℃/min to obtain the toughened glass, wherein the additives can also comprise 35% of potassium carbonate, 46% of aluminum oxide, 1% of potassium hydroxide, 10% of cesium sulfate and 8% of zinc oxide, in other equivalent embodiments, the additives can be any combination of at least two of potassium carbonate, potassium hydroxide, aluminum oxide, cesium sulfate, potassium chloride, zinc oxide, magnesium sulfate, calcium carbonate and titanium oxide, compared with the conventional one-time toughening completion of chemical toughening, the gravel resistance and impact resistance of the toughened glass can be effectively and stably improved, detecting the produced three glass sample wafers by adding additives, wherein the surface stresses of the three glass sample wafers are 987MPA, 963MPA and 957MPA respectively, the stress layer depths are 58um, 56um and 58um respectively, and the gravel resistance strength of the three glass sample wafers is 336km/h, 333km/h and 341 km/h;
sheet combination: and sequentially laminating the outer piece of tempered glass, the conductive wire sandwiched film layer, the inner piece of tempered glass, the buffer reinforced film layer, the inner piece of tempered glass, the adhesive layer, the anti-splashing film and the cover plate from outside to inside to obtain a laminated glass group, wherein the thickness of the outer piece of tempered glass is 7mm, the thickness of the conductive wire sandwiched film layer is 1mm, the thickness of the inner piece of tempered glass is 6mm, the thickness of the buffer reinforced film layer is 9mm, the thickness of the inner piece of tempered glass is 5mm and the thickness of the adhesive layer is 3.5 mm. Meanwhile, the main material of the conductive wire clamping film layer is an SGP plate and the main material of the adhesive layer is PVB or polyurethane film, namely the conductive wire clamping film layer and the adhesive layer are formed by mixing multiple materials, wherein the SGP plate is selected as the main material of the conductive wire clamping film layer, and then other one or two materials are mixed to ensure the rigidity of the conductive wire clamping film layer;
high pressure: carrying out primary high pressure on the glass combination at the temperature of 130 ℃, the air pressure of 12bar, the time of 3h and the cooling speed of 2 ℃/min, and secondary high pressure at the temperature of 110 ℃, the air pressure of 13bar, the time of 4h and the cooling speed of 2 ℃/min, wherein the glass air cavity can be prevented from appearing after high pressure due to multiple times of high-pressure layering;
and (3) post-treatment: the cover plate is disassembled and assembled by adopting equipment for mixing high-pressure air and a sucker, the cover plate, the outer piece of tempered glass, the inner piece of tempered glass and the inner piece of tempered glass are molded and secondarily reinforced together, so that the cover plate is prevented from being cracked and causing optical bright spots or black spots, and finally, the gravel resistance strength of the high-speed locomotive glass sample piece is 448km/h through detection. (ii) a
Referring to fig. 1, a third embodiment of the present invention is:
the glass in the embodiment can be applied to high-speed trains and other scenes needing high-resistance gravel glass.
A method for manufacturing high-gravel-resistance glass comprises the following steps:
selecting materials: the glass is aluminosilicate glass;
edging: polishing the cut glass by using a 240-mesh resin grinding wheel to obtain the ground glass, so that small cracks and small broken edges at the edge part of the glass can be greatly reduced;
primary reinforcement: putting the edge-ground glass into a 680 ℃ tempering furnace for semi-tempering for 30s and with the wind pressure of 7.0Kpa to obtain semi-tempered glass;
molding: carrying out spherical glass surface molding with the isolation powder number of 220 on semi-tempered glass by adopting self-weight molding, and selecting a proper isolation powder number to avoid optical black spots from easily appearing after molding;
secondary strengthening: adding additives into toughened molten salt, wherein the additives comprise 40% of potassium carbonate, 50% of aluminum oxide, 5% of cesium sulfate and 5% of magnesium sulfate, performing primary chemical rigidification on the semi-toughened glass at the temperature of 450 ℃ for 6 hours and performing secondary chemical rigidification at the temperature of 420 ℃ for 8 hours and at the cooling speed of 2 ℃/min to obtain the strengthened glass, the additives can also comprise 35% of potassium carbonate, 46% of aluminum oxide, 1% of potassium hydroxide, 10% of cesium sulfate and 8% of zinc oxide, in other equivalent embodiments, the additives can be any combination of at least two components of potassium carbonate, potassium hydroxide, aluminum oxide, cesium sulfate, potassium chloride, zinc oxide, magnesium sulfate, calcium carbonate and titanium oxide, compared with the existing one-time strengthening of chemical toughening, the gravel resistance and impact resistance of the strengthened glass can be effectively and stably improved, detecting three produced glass sample sheets by adding additives, wherein the surface stresses of the three glass sample sheets are 932MPA, 896MPA and 961MPA respectively, the stress layer depths are 53um, 57um and 52um respectively, and the gravel resisting strength of the three glass sample sheets is 338km/h, 349km/h and 347 km/h;
sheet combination: sequentially laminating the outer piece of tempered glass, the conductive wire sandwiched film layer, the inner piece of tempered glass, the buffer reinforced film layer, the inner piece of tempered glass, the adhesive layer, the anti-splashing film and the cover plate from outside to inside to obtain a laminated glass group, wherein the thickness of the outer piece of tempered glass is 8mm, the thickness of the conductive wire sandwiched film layer is 1.60mm, the thickness of the inner piece of tempered glass is 8mm, the thickness of the buffer reinforced film layer is 10mm, the thickness of the inner piece of tempered glass is 6mm and the thickness of the adhesive layer is 4 mm. Meanwhile, the main material of the conductive wire clamping film layer is an SGP plate and the main material of the adhesive layer is PVB or polyurethane film, namely the conductive wire clamping film layer and the adhesive layer are formed by mixing multiple materials, wherein the SGP plate is selected as the main material of the conductive wire clamping film layer, and then other one or two materials are mixed to ensure the rigidity of the conductive wire clamping film layer;
high pressure: carrying out primary high pressure on the glass combination at the temperature of 150 ℃, the air pressure of 15bar, the time of 5h and the cooling speed of 3 ℃/min, and secondary high pressure at the temperature of 120 ℃, the air pressure of 15bar, the time of 5h and the cooling speed of 3 ℃/min, wherein the high pressure can be layered for many times to avoid a glass air cavity after high pressure;
and (3) post-treatment: the cover plate is disassembled and assembled by adopting equipment mixing high-pressure air and a sucker, the cover plate, the outer piece of tempered glass, the inner piece of tempered glass and the inner piece of tempered glass are molded in the step and secondarily tempered in the step, so that the cover plate is prevented from being cracked and causing optical bright spots or black spots, and finally, the gravel resistance strength of the glass sample plate of the high-speed locomotive is 454km/h through detection.
As shown in fig. 2, the fourth embodiment of the present invention is:
the high-gravel-resistance glass comprises an outer piece of tempered glass 1, a conductive wire clamping film layer 2, an inner piece of tempered glass 3, a buffer tempered film layer 4, an inner piece of tempered glass 5, an adhesive layer 6 and an anti-splashing film 7 from inside to outside, and is manufactured by adopting any one of the manufacturing methods of the first embodiment to the third embodiment.
In conclusion, according to the high-gravel-resistance glass and the manufacturing method thereof provided by the invention, the edge part of the glass is polished by the 200-240-mesh resin grinding wheel, and the gravel resistance and the shock resistance of the strengthened glass can be improved by selecting the aluminum silicate glass, semi-toughening, twice chemical toughening and laminating treatment of glass layers with different thicknesses and film layers made of different materials; the surface stress and the stress layer depth of the glass are improved by adding the additive; by selecting proper mesh number of the isolation powder, optical black spots are prevented from being easily generated after molding; by adopting twice layering high pressure, the glass can be prevented from generating an air cavity after high pressure; the cover plate and the tempered glass are molded and tempered together, so that the cover plate is prevented from cracking and causing optical bright spots or black spots.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (10)
1. A method for manufacturing high-gravel-resistance glass is characterized by comprising the following steps:
primary reinforcement: placing the edge-ground glass in a toughening furnace at 600-700 ℃ for semitoughening with the time of 25-30s and the wind pressure of 5.0-7.0Kpa to obtain semitoughened glass;
secondary strengthening: and carrying out primary chemical rigidization on the semi-tempered glass at 440-450 ℃ for 4-6h and secondary chemical rigidization at 400-420 ℃, 6-8h and the cooling speed of 1-2 ℃/min to obtain the tempered glass.
2. The method for manufacturing the high-resistance gravel glass according to claim 1, wherein the secondary strengthening step further comprises the following steps:
and adding an additive into the toughened molten salt for primary chemical toughening and secondary chemical toughening, wherein the additive is any combination of at least two of potassium carbonate, potassium hydroxide, aluminum oxide, cesium sulfate, potassium chloride, zinc oxide, magnesium sulfate, calcium carbonate and titanium oxide.
3. The method for manufacturing the high-resistance gravel glass according to claim 1, wherein the step of primary strengthening comprises the following steps of:
edging: and polishing the cut glass by using a 200-240-mesh resin grinding wheel to obtain the ground glass.
4. The method for manufacturing the high-gravel-resistance glass according to claim 1, wherein the step of primary strengthening and the step of secondary strengthening comprise the following steps:
molding: the self-weight forming is adopted to carry out the spherical glass forming with 180-220 mesh number of isolating powder on the semi-toughened glass.
5. The method for manufacturing a glass with high gravel resistance according to claim 1, wherein the glass is an aluminosilicate glass.
6. The method for manufacturing the high-resistance gravel glass according to claim 1, wherein the step of secondary strengthening further comprises the following steps of:
sheet combination: and sequentially laminating the outer piece of tempered glass, the conductive wire clamping film layer, the inner piece of tempered glass, the buffer reinforced film layer, the inner piece of tempered glass, the adhesive layer, the anti-splashing film and the cover plate from outside to inside to obtain the laminated glass group.
7. The method for manufacturing the glass with high gravel resistance as claimed in claim 6, wherein the thickness of the outer piece of tempered glass in the step of laminating is 6-8mm, the thickness of the inner piece of tempered glass is 4-6mm, the main material of the conductive wire sandwiched film layer is an SGP plate, and the main material of the adhesive layer is PVB or polyurethane film.
8. The method for manufacturing the high-resistance gravel glass according to claim 6, wherein the step of laminating comprises the following steps of:
high pressure: and carrying out primary high pressure at the temperature of 120-150 ℃, the air pressure of 10-15bar, the time of 2-5h and the cooling speed of 1-3 ℃/min and secondary high pressure at the temperature of 100-120 ℃, the air pressure of 10-15bar, the time of 1-5h and the cooling speed of 1-3 ℃/min on the sheet-combining glass group.
9. The method for manufacturing the high-resistance gravel glass according to claim 8, wherein the step of high pressure is followed by the step of:
and (3) post-treatment: the cover plate is disassembled and assembled by adopting equipment with high-pressure gas and a sucker, and the cover plate and the outer piece strengthened glass, the inner piece strengthened glass and the inner piece strengthened glass are molded in steps and secondarily strengthened in steps.
10. A highly gravel-resistant glass manufactured by the manufacturing method of any one of claims 1 to 9.
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Cited By (1)
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