CN114031277A - Physical full-tempering method for ultrathin glass - Google Patents
Physical full-tempering method for ultrathin glass Download PDFInfo
- Publication number
- CN114031277A CN114031277A CN202111342565.4A CN202111342565A CN114031277A CN 114031277 A CN114031277 A CN 114031277A CN 202111342565 A CN202111342565 A CN 202111342565A CN 114031277 A CN114031277 A CN 114031277A
- Authority
- CN
- China
- Prior art keywords
- glass
- ultrathin glass
- ultrathin
- tempering
- ultra
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011521 glass Substances 0.000 title claims abstract description 115
- 238000000034 method Methods 0.000 title claims abstract description 50
- 238000005496 tempering Methods 0.000 title claims abstract description 42
- 238000001816 cooling Methods 0.000 claims abstract description 46
- 238000010791 quenching Methods 0.000 claims abstract description 33
- 230000000171 quenching effect Effects 0.000 claims abstract description 32
- 238000010438 heat treatment Methods 0.000 claims abstract description 27
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 11
- 235000011089 carbon dioxide Nutrition 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims abstract description 7
- 238000007667 floating Methods 0.000 claims description 2
- 239000005341 toughened glass Substances 0.000 abstract description 4
- 241001391944 Commicarpus scandens Species 0.000 abstract description 3
- 238000011161 development Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010248 power generation Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 238000005188 flotation Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009351 contact transmission Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005304 optical glass Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- 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
- C03B27/0404—Nozzles, blow heads, blowing units or their arrangements, specially adapted for flat or bent glass sheets
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
The invention discloses a physical full tempering method of ultrathin glass, which comprises the steps of S1, heating the ultrathin glass in tempering equipment; s2, quenching the heated ultrathin glass, and then conventionally cooling to finish the toughening of the ultrathin glass; wherein: quenching, namely, performing combined cooling by adopting a serial fan and an air grid, wherein the air grid is provided with a heat exchange pipeline, and dry ice is filled in the heat exchange pipeline; the series fan is used for pressurizing air, and the pressurized air impacts the surface of the ultrathin glass through the air grid. The method for physically and fully toughening the ultrathin glass is simple and has low process cost; the method can realize the toughening of the ultrathin glass, has high toughening strength, is not easy to break the glass, and has excellent flatness and mechanical strength after toughening. The physical full-tempering method for the ultrathin glass, provided by the invention, has a good tempering effect and has a good development prospect in the field of manufacturing of the ultrathin tempered glass.
Description
Technical Field
The invention relates to the technical field of photovoltaic glass processing, in particular to a physical full-tempering method for ultrathin glass.
Background
The solar energy is inexhaustible photovoltaic clean energy, and the photovoltaic power generation has the advantages of low price, high power generation efficiency, high reliability, low carbon emission and the like. Wherein: the core device of photovoltaic power generation is a photovoltaic module, and the photovoltaic module comprises a photovoltaic cell, glass, a packaging adhesive film, a welding strip, a junction box and the like. The photovoltaic cell is a main unit of photovoltaic power generation, but the photovoltaic cell needs a firm and durable packaging material to be capable of keeping the photovoltaic cell to meet the requirement of long-term power generation. Glass is the most important and irreplaceable material for photovoltaic modules; with the rapid development of photovoltaic power generation, the demand for photovoltaic glass is increasing; along with the price rise of raw materials, the increase of photovoltaic panel size has also two glass to promote, also is bigger and bigger to the demand of ultra-thin glass.
At present, the toughening equipment can produce 2.0-2.5mm toughened glass but the strength can not reach the full steel level (the breakage of granularity); thinner glass is difficult to be toughened, and the problems of weak toughening strength, easy breakage of the glass, poor toughening uniformity, poor flatness and the like exist.
Therefore, if ultra-thin, strengthened, large-area, high-power (high transmittance and light utilization) optical glass technology and products can be realized, strong support can be provided for the characteristics of low price, high power generation efficiency, high reliability, low-carbon emission manufacturing and the like.
Disclosure of Invention
Aiming at the problems that the ultra-thin glass in the prior art is difficult to temper, the tempered strength is weak, the glass is easy to break, the tempering uniformity is poor, the flatness is poor and the like after tempering, the invention provides the ultra-thin glass physical full-tempering method.
The invention is realized by the following technical scheme:
the method for physically and fully toughening the ultrathin glass is characterized by comprising the following specific steps of:
s1, heating the ultrathin glass in tempering equipment;
s2, quenching the heated ultrathin glass, and then conventionally cooling to finish the toughening of the ultrathin glass; wherein: quenching, namely, performing combined cooling by adopting a serial fan and an air grid, wherein the air grid is provided with a heat exchange pipeline, and dry ice is filled in the heat exchange pipeline; the series fan is used for pressurizing air, and the pressurized air impacts the surface of the ultrathin glass through the air grid.
Specifically, the toughening equipment is provided with a heating section and a cooling section, wherein the initial section of the cooling section is a quenching section, and the subsequent section of the quenching section is a conventional cooling section; and (3) heating the ultrathin glass in the heating section, transferring the ultrathin glass to the cooling section, quenching the ultrathin glass in the quenching section, cooling the ultrathin glass in the conventional cooling section, and finally discharging the ultrathin glass from the conventional cooling section to finish the toughening of the ultrathin glass.
Further, the ultra-thin glass physical full-tempering method comprises the following steps: step S1, conveying the ultrathin glass to a heating section of toughening equipment for heating in a non-contact conveying manner; heating the ultrathin glass to 650-720 ℃, and then preserving heat for 40-100 seconds.
Further, the ultra-thin glass physical full-tempering method comprises the following steps: and step S1, conveying the ultrathin glass to a heating section of toughening equipment for heating in an air floating type conveying mode.
Further, the ultra-thin glass physical full-tempering method comprises the following steps: step S1, heating the ultrathin glass to 680-710 ℃, and then preserving heat for 70-100 seconds.
Further, the ultra-thin glass physical full-tempering method comprises the following steps: step S2, quenching the heated ultrathin glass, and then conventionally cooling to finish the toughening process of the ultrathin glass; wherein: the quenching time is 3-10 seconds and the conventional cooling time is 50-70 seconds.
Further, the ultra-thin glass physical full-tempering method comprises the following steps: the pressure at the time of ordinary cooling in step S2 was 10000-15000 Pa.
Further, the ultra-thin glass physical full-tempering method comprises the following steps: the number of the series fans in the step S2 is 2-5.
Further, the ultra-thin glass physical full-tempering method comprises the following steps: the serial fan in the step S2 is used for pressurizing the wind until the wind pressure is 30000-40000 Pa; the temperature of the air during quenching is lower than 35 ℃.
Further, the ultra-thin glass physical full-tempering method comprises the following steps: in the step S2, the heat exchange pipeline in the air grid is an N × M heat exchange pipeline array, the diameter of the heat exchange pipeline is 4-20mm, the pipeline spacing is 1-5mm, N is greater than 10, and M is greater than 5.
Specifically, the physical full tempering method for the ultrathin glass comprises the following steps: firstly heating the ultrathin glass to the deformation point temperature (heating to the transformation temperature of the ultrathin glass plus 100-150 ℃), and then transporting the ultrathin glass to a cooling and cooling section in a non-contact transmission mode; the cooling and temperature-reducing section consists of a serial fan and an air grid (wherein the air grid is provided with a heat exchange pipeline filled with dry ice), and the glass is uniformly cooled by adjusting parameters such as air pressure, temperature and the like of the air grid; the air grid and the dry ice airflow exchange heat to rapidly cool the ultrathin glass so as to achieve the purpose of rapid cooling.
Specifically, the physical full tempering method for the ultrathin glass comprises the following specific steps of:
s1, conveying the ultrathin glass to a heating section of toughening equipment in a non-contact conveying mode, and heating to a deformation point temperature;
s2, conveying the heated ultrathin glass to a quenching section of tempering equipment in a non-contact conveying manner, quenching, and then cooling in a conventional cooling section to finish tempering of the ultrathin glass; wherein: the quenching section of the toughening equipment is provided with a serial fan and an air grid, the air grid is provided with a heat exchange pipeline, and dry ice is filled in the heat exchange pipeline; the series-connection type fan be used for with wind pressurization, the wind after the pressurization passes through the air grid is right ultra-thin glass surface strikes, carries out rapid cooling to ultra-thin glass through high-pressure microthermal gas, improves cooling rate, reinforcing ultra-thin glass's tempering performance.
The invention has the beneficial effects that:
(1) the method for physically and fully toughening the ultrathin glass is simple and has low process cost; the method can realize full toughening of the ultrathin glass, has high toughening strength, is not easy to break the glass, and has excellent flatness and mechanical strength after toughening.
(2) The physical full-tempering method for the ultrathin glass, provided by the invention, has a good tempering effect and has a good development prospect in the field of manufacturing of the ultrathin tempered glass.
(3) According to the method, the serial fan, the air grid and the dry ice are used in the quenching process, so that on one hand, the heated ultrathin glass can be rapidly cooled, and the toughening effect of the ultrathin glass can be improved; on the other hand can make high-pressure low temperature gas blow to ultra-thin glass's surface evenly through using the air grid, and is more even to ultra-thin glass's impact, can not lead to ultra-thin glass tempering inhomogeneous, avoids the broken and not good problem of stress distribution of glass, promotes the mechanical strength after the ultra-thin glass tempering by a wide margin.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic view of a tempering apparatus according to the present invention.
In the figure: 1 heating section, 2 cooling section, 3 air grid, 21 quenching section and 22 conventional cooling section.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The physical full-tempering method for the ultrathin glass comprises the following specific steps of:
s1, conveying the ultrathin glass to a heating section 1 of toughening equipment through a non-contact conveying mode (an air flotation conveying mode), heating to 680 ℃ (deformation point temperature), and preserving heat at the temperature for 100 seconds; the toughening equipment is provided with a heating section 1 and a cooling section 2, wherein the initial section of the cooling section 2 is a quenching section 21, and the subsequent section of the quenching section is a conventional cooling section 22;
s2, conveying the heated ultrathin glass to a quenching section 21 of toughening equipment in a non-contact conveying manner, quenching, wherein the cooling time in the quenching section 21 is 5 seconds, conveying the ultrathin glass to a conventional cooling section 22 for cooling after the quenching is finished, and the pressure and the cooling time in the conventional cooling section 22 are 11000Pa and 57 seconds respectively; after conventional cooling, the toughening process of the ultrathin glass is finished; wherein: the quenching section 21 of the toughening equipment is provided with 3 series-connected fans and an air grid 3, the air grid is provided with an NxM heat exchange pipeline array, and dry ice is filled in the heat exchange pipelines; the serial fan is used for pressurizing wind until the wind pressure is 30000 Pa; applying gas with the air pressure of 30000Pa and the air temperature of 27 ℃ to impact and cool the ultrathin glass plate through the combined action of the serial fan, the air grid and the dry ice; the ultra-thin glass is rapidly cooled by high-pressure low-temperature gas, so that the cooling rate is increased, and the toughening performance of the ultra-thin glass is enhanced.
Example 2
The physical full-tempering method for the ultrathin glass comprises the following specific steps of:
s1, conveying the ultrathin glass to a heating section 1 of toughening equipment through a non-contact conveying mode (an air flotation conveying mode), heating to 710 ℃ (deformation point temperature), and preserving heat at the temperature for 70 seconds;
s2, conveying the heated ultrathin glass to a quenching section 21 of tempering equipment in a non-contact conveying manner, quenching, wherein the cooling time in the quenching section 21 is 3 seconds, conveying the ultrathin glass to a conventional cooling section 22 for cooling after the quenching is finished, and the pressure when the ultrathin glass is cooled in the conventional cooling section 22 is 13000Pa and the cooling time is 50 seconds; after conventional cooling, the toughening process of the ultrathin glass is finished; wherein: the quenching section 21 of the toughening equipment is provided with 5 serial fans and an air grid, the air grid is provided with an NxM heat exchange pipeline array, and dry ice is filled in the heat exchange pipelines; the series fan is used for pressurizing wind until the wind pressure is 35000 Pa; the ultra-thin glass plate is impacted and cooled by applying gas with 35000Pa wind pressure and 25 ℃ wind temperature under the combined action of a serial fan, a wind grid and dry ice; the ultra-thin glass is rapidly cooled by high-pressure low-temperature gas, so that the cooling rate is increased, and the toughening performance of the ultra-thin glass is enhanced.
Comparative example 1
The physical full-tempering method for the ultrathin glass comprises the following specific steps of:
s1, conveying the ultrathin glass into a traditional toughening furnace through a non-contact conveying mode (air flotation conveying mode), heating to 680 ℃, and preserving heat at the temperature for 100 seconds;
and S2, applying 11000Pa wind pressure to the heated ultrathin glass through a wind grid, and cooling to normal temperature to finish the toughening of the ultrathin glass.
The above example 1 is different from the comparative example 1 in the toughening method.
And (3) testing:
the performance of the toughened ultrathin glass of the above examples 1-2 and comparative example 1 is tested by referring to the national standard GB/T34328-2017, and the test results are shown in Table 1:
table 1 is a table of performance parameters of ultra-thin glass tempered by the methods of comparative example 1, example 1 and example 2
The test results in table 1 show that the ultra-thin glass tempered by the methods of the invention in examples 1 and 2 is significantly better than that in comparative example 1 in terms of impact resistance, surface stress, bending strength and the like, which indicates that the ultra-thin glass tempered by the physical full tempering method of the ultra-thin glass provided by the invention has excellent mechanical properties. The tempering degree in table 1 shows that the method provided by the invention can realize complete tempering of the ultrathin glass. The bow test results in table 1 show that the glass tempered by the method of the present invention has higher flatness. In conclusion, the method can realize complete toughening of the ultrathin glass, and has high toughening strength and excellent flatness and mechanical strength of the toughened glass.
The above-mentioned preferred embodiments of the present invention are provided for illustration only and not for the purpose of limiting the invention. Obvious variations or modifications of the present invention are within the scope of the present invention.
Claims (9)
1. The method for physically and fully toughening the ultrathin glass is characterized by comprising the following steps of:
s1, heating the ultrathin glass in tempering equipment;
s2, quenching the heated ultrathin glass, and then conventionally cooling to finish the toughening of the ultrathin glass; wherein: quenching, namely, performing combined cooling by adopting a serial fan and an air grid, wherein the air grid is provided with a heat exchange pipeline, and dry ice is filled in the heat exchange pipeline; the series fan is used for pressurizing air, and the pressurized air impacts the surface of the ultrathin glass through the air grid.
2. The method for physically and fully tempering ultra-thin glass according to claim 1, wherein step S1, said ultra-thin glass is transferred to a heating section of a tempering device for heating by non-contact transfer; heating the ultrathin glass to 650-720 ℃, and then preserving heat for 40-100 seconds.
3. The method for physically and fully tempering ultra-thin glass according to claim 2, wherein step S1 is performed by transferring the ultra-thin glass to a heating section of a tempering device by using an air floating transfer method.
4. The method as claimed in claim 2, wherein the ultra-thin glass is heated to 710 ℃ at step S1, and then is kept warm for 70-100 seconds.
5. The method according to claim 1, wherein the step S2 is to quench the heated ultra-thin glass and then cool the glass conventionally to complete the tempering process of the ultra-thin glass; wherein: the quenching time is 3-10 seconds and the conventional cooling time is 50-70 seconds.
6. The method as claimed in claim 5, wherein the pressure during the cooling step S2 is 10000-15000 Pa.
7. The method as claimed in claim 1, wherein the number of the fans of the series fan in step S2 is 2-5.
8. The method as claimed in claim 1 or 7, wherein the series fan in step S2 is used to pressurize the wind to a pressure of 30000-40000 Pa; the temperature of the air during quenching is lower than 35 ℃.
9. The method of claim 1, wherein the heat exchanging pipes in the air grid in step S2 are an N x M array of heat exchanging pipes, the diameter of the heat exchanging pipes is 4-20mm, the pipe spacing is 1-5mm, N >10, and M > 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111342565.4A CN114031277A (en) | 2021-11-12 | 2021-11-12 | Physical full-tempering method for ultrathin glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111342565.4A CN114031277A (en) | 2021-11-12 | 2021-11-12 | Physical full-tempering method for ultrathin glass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114031277A true CN114031277A (en) | 2022-02-11 |
Family
ID=80137505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111342565.4A Pending CN114031277A (en) | 2021-11-12 | 2021-11-12 | Physical full-tempering method for ultrathin glass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114031277A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116589172A (en) * | 2023-05-10 | 2023-08-15 | 荆州能耀新材有限公司 | Toughening device and toughening method for ultrathin photovoltaic glass |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1843988A (en) * | 2006-04-07 | 2006-10-11 | 无锡市新惠玻璃制品有限责任公司 | Process for preparing physical toughened thin glass |
| CN105712618A (en) * | 2016-04-15 | 2016-06-29 | 常州亚玛顿股份有限公司 | Cooling air cooling system of shock cooling section of glass tempering furnace |
| CN106277730A (en) * | 2016-08-15 | 2017-01-04 | 吴江南玻玻璃有限公司 | A kind of 2.5mm photovoltaic module ultra-thin tempering coated glass production method |
| CN106865964A (en) * | 2017-02-27 | 2017-06-20 | 洛阳豪顿曼节能风机有限公司 | Isothermal, isobaric Multi-use ultra-thin glass toughening equipment equipment |
| CN110981174A (en) * | 2019-12-12 | 2020-04-10 | 中国建材桐城新能源材料有限公司 | Production device and production method of 2mm physical full-tempered PID (proportion integration differentiation) resistant glass |
-
2021
- 2021-11-12 CN CN202111342565.4A patent/CN114031277A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1843988A (en) * | 2006-04-07 | 2006-10-11 | 无锡市新惠玻璃制品有限责任公司 | Process for preparing physical toughened thin glass |
| CN105712618A (en) * | 2016-04-15 | 2016-06-29 | 常州亚玛顿股份有限公司 | Cooling air cooling system of shock cooling section of glass tempering furnace |
| CN106277730A (en) * | 2016-08-15 | 2017-01-04 | 吴江南玻玻璃有限公司 | A kind of 2.5mm photovoltaic module ultra-thin tempering coated glass production method |
| CN106865964A (en) * | 2017-02-27 | 2017-06-20 | 洛阳豪顿曼节能风机有限公司 | Isothermal, isobaric Multi-use ultra-thin glass toughening equipment equipment |
| CN110981174A (en) * | 2019-12-12 | 2020-04-10 | 中国建材桐城新能源材料有限公司 | Production device and production method of 2mm physical full-tempered PID (proportion integration differentiation) resistant glass |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116589172A (en) * | 2023-05-10 | 2023-08-15 | 荆州能耀新材有限公司 | Toughening device and toughening method for ultrathin photovoltaic glass |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1843988A (en) | Process for preparing physical toughened thin glass | |
| CN103319082A (en) | Manufacturing method of ultrathin heat-reinforced glass | |
| CN114031277A (en) | Physical full-tempering method for ultrathin glass | |
| CN110981174A (en) | Production device and production method of 2mm physical full-tempered PID (proportion integration differentiation) resistant glass | |
| CN102863146A (en) | Physical toughened glass, solar cell panel and manufacture methods of physical toughened glass and solar cell panel | |
| CN101575666A (en) | Heat processing technology for improving low-temperature impact work of 42CrMo bearing | |
| EP3094605B1 (en) | Tempering and cooling method for a tempered glass | |
| CN102898010B (en) | Toughened glass device and toughened glass processing method | |
| CN102603175B (en) | Device and method for producing toughened glass | |
| CN106277730A (en) | A kind of 2.5mm photovoltaic module ultra-thin tempering coated glass production method | |
| CN101892373A (en) | Heat treatment technology for low-temperature high impact toughness medium-thickness steel plate | |
| CN101906523B (en) | Heat treatment process of nuclear power reactor pressure vessel reactor core cylinder forgings | |
| CN113149455A (en) | Preparation method of coated glass for solar photovoltaic module | |
| CN208055200U (en) | It is a kind of to produce annealing furnace with the tempered glass for recycling function | |
| CN203144279U (en) | High/low-pressure energy-saving type tempered glass electric furnace | |
| CN108178499A (en) | It is a kind of to produce annealing furnace with the tempered glass for recycling function | |
| CN101921053A (en) | Conductive glass toughening method | |
| CN104891790B (en) | A kind of symmetrical concentrated force couples hot bending device and its application with evenly load | |
| CN202529983U (en) | Tempered glass production device | |
| CN100547090C (en) | The pretreatment unit of composite material metal base material and pretreatment process | |
| CN202265502U (en) | Tempered glass plate cooling air grid with wind shield | |
| CN207944016U (en) | A kind of high-strength wearable glassware annealing device | |
| CN202865107U (en) | Air supporting structure of ultrathin toughened glass furnace | |
| CN204874282U (en) | Glass fibre reinforced plastics furnace | |
| CN104973757A (en) | Flat glass tempering apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220211 |