CN105645747A - Glass tempering method - Google Patents
Glass tempering method Download PDFInfo
- Publication number
- CN105645747A CN105645747A CN201610135520.2A CN201610135520A CN105645747A CN 105645747 A CN105645747 A CN 105645747A CN 201610135520 A CN201610135520 A CN 201610135520A CN 105645747 A CN105645747 A CN 105645747A
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- Prior art keywords
- glass
- section
- tempering
- heating
- bringing
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Classifications
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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
- C03B27/012—Tempering or quenching glass products by heat treatment, e.g. for crystallisation; Heat treatment of glass products before tempering by cooling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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- 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
Disclosed is a glass tempering method. After the laser heating process is used for glass heating, auxiliary heating and tempering are performed sequentially to maintain a constant temperature between heating and tempering of glass, defects like microcracks formed in the pretreatment process like cutting and drilling can be eliminated, glass quality is maintained, and glass yield is increased.
Description
Technical field
The present invention relates to safety glass process technology, carry out, in particular by laser mode, the method that auxiliary heating eliminates the glass tempering of glass micro-crack.
Background technology
In prior art, a complete toughened glass production line generally includes a platform, heating furnace, tempering section and bottom sheet platform, and the glass heated to softening temperature is transferred directly to the quick cooling steel chemical conversion type of tempering section by roller-way carrying after coming out of the stove. But, wherein Problems existing is: the phenomenon that glass bursts suddenly in the quick cooling procedure of tempering section happens occasionally, not only reduce safety glass yield rate, and the cullet that drop very easily block the exhaust vent of tempering section, bring totally unfavorable impact to normal production.
Why does glass burst suddenly in toughening process? trace it to its cause as follows, one, glass former cutting, glass edge and hole, groove edge create micro-crack in boring or angle lap process, cause that stress directly ftractures at micro-crack place in toughening process; Its two, glass in heating process because of thermal shock surface produce micro-crack, toughening process also can cause glass rupture.
Scientific and technical personnel for the art, are thirsting for this technical barrier of solution for many years always, but are failing to be fully solved always.
Summary of the invention
It is an object of the invention to adopt the toughening method of a kind of glass, after the process of LASER HEATING is used for glass heating, leading auxiliary heat, row tempering again, with realize glass heating with tempering between keep a stationary temperature, and the defects such as micro-crack that glass formed in the preprocessing process such as cutting, boring can be eliminated, to keep glass quality, improve glass productivity.
For solving above-mentioned technical problem, it is achieved above-mentioned purpose, the technical solution used in the present invention is:
A kind of toughening method of glass, including glass tempering furnace, glass tempering furnace includes a bringing-up section, an auxiliary hot arc and a tempering section, by conveyer device, glass is delivered to from bringing-up section tempering section continuously, it is characterised in that:
The heating process of bringing-up section is heated by radiant heating pattern or the Convective Heating mode of heating, it is achieved the overall softening to glass, and heating-up temperature is 450-850 DEG C;
Auxiliary hot arc adopts laser mode to carry out auxiliary heating, auxiliary hot temperature is 600 1200 DEG C, it is delivered to the glass temperature of tempering section with realization from bringing-up section transfer process, keeps the scope of a constant temperature, and the micro-crack realizing in auxiliary thermal process, glass surface being retained is repaired;
Tempering section adopts natural cooling or forces the mode of cooling to carry out tempering process.
Glass tempering furnace of the present invention, its bringing-up section, auxiliary hot arc and tempering section are connected as a single entity.
Glass tempering furnace of the present invention, auxiliary hot arc is arranged between bringing-up section and tempering section.
Auxiliary hot arc of the present invention is provided with laser heater.
The laser heater of auxiliary hot arc of the present invention is symmetricly set on the above-below direction of conveyer device.
Laser heater of the present invention is many groups.
Laser heater of the present invention is fixedly installed relative to conveyer device, and glass is heated by laser heater in motor process.
The pressure type of cooling of the present invention is quenching, liquid cooling or solid cooled.
Heating-up temperature of the present invention is 600-750 DEG C.
Auxiliary hot temperature of the present invention is 800 1000 DEG C.
The invention has the beneficial effects as follows:
1, an auxiliary hot arc is set between glass bringing-up section and tempering section, it may be achieved the glass after heating does not make the temperature of glass reduce too fast after leaving heating furnace, and keeps certain constant temperature, is conducive to improving the quality of glass tempering.
2, an auxiliary hot arc is set between bringing-up section and tempering section, its mode heated adopts LASER HEATING, the defects such as micro-crack that glass is formed in the preprocessing process such as cutting, boring can be carried out Processing for removing by LASER HEATING process, it is ensured that the glass product yield rate after tempering.
3, owing to arranging an auxiliary hot arc between bringing-up section and tempering section, glass enters in toughening process, and temperature and falling temperature technique thereof that its toughening process uses are easily controllable, and decreases electricity consumption and make consumption, not only reduces cost, also improves productivity.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention;
Labelling in figure: 1, bringing-up section; 2, auxiliary hot arc; 3, laser heater, 4, tempering section, 5, glass; 6, conveyer device.
Detailed description of the invention
As it is shown in figure 1, the toughening method of a kind of glass, including glass tempering furnace, glass tempering furnace includes a bringing-up section 1, an auxiliary hot arc 2 and a tempering section 4, by conveyer device 6, glass 5 is delivered to from bringing-up section tempering section continuously, wherein, plate glass selected by this glass.
The heating process of bringing-up section is heated by radiant heating pattern or the Convective Heating mode of heating, it is achieved the overall softening to glass, heating-up temperature is 450-850 DEG C.
Auxiliary hot arc adopts laser mode to carry out auxiliary heating, auxiliary hot temperature is 600 1200 DEG C, the auxiliary hot temperature of auxiliary hot arc is higher than the heating-up temperature of bringing-up section, it is delivered to the glass temperature of tempering section with realization from bringing-up section transfer process, keeps the scope of a constant temperature, and the micro-crack realizing in auxiliary thermal process, glass surface being retained is repaired.
Sending into tempering section by auxiliary hot arc, tempering section adopts natural cooling or forces the mode of cooling to carry out tempering process, and the impurity realizing in auxiliary thermal process, glass surface being retained carries out softening Processing for removing.
For realizing above-mentioned technological means and method, also need to adopt the following technical scheme that
Described glass tempering furnace, its bringing-up section, auxiliary hot arc and tempering section are connected as a single entity, and pass through unitary design, it is achieved the streamlined of glass tempering produces.
Described heating furnace, auxiliary hot arc is arranged between bringing-up section and tempering section.
Described auxiliary hot arc 2 is provided with laser heater 3, and laser heater 3 adopts commercially available prod, it is achieved heats, laser heater 3 be chosen as solid state laser or gas laser.
The laser heater 3 of described auxiliary hot arc is symmetricly set on the above-below direction of glass conveyer device 6, and described laser heater, by selecting the wavelength of laser, scanning speed, scanning density and laser power etc., to control the auxiliary hot temperature in auxiliary hot arc.
Described laser heater 3 is fixedly installed relative to conveyer device 6, and glass 5 is heated by laser heater 3 in motor process.
The radiation modality of described laser can pass through the linearly mode of strafing and be irradiated.
The described pressure type of cooling is quenching, liquid cooling or solid cooled. Liquid cooling medium can be water, chemicals, and solid cooled mode can be heat transmission, conduction of heat.
The auxiliary pyrogen reason of laser: glass produces to heat up after absorbing laser energy, and during high temperature, glass viscosity reduces, and thermal stress discharges, and glass will not occur thermoelasticity to rupture under laser action, but softening transform occurs. After laser action stops in the cooling procedure of glass, along with the reduction of temperature, the viscosity of glass is gradually restored to again house temperature, but the stress in glass no longer returns to zero as elastomer, but it being changed into tensile stress, its size is by how many decisions of Stress Release during high temperature. The laser intensity of heating period is not to be exceeded the threshold values that can produce to cause the tensile stress of glass breakage.
Embodiment 1
A kind of toughening method of glass, including glass tempering furnace, glass tempering furnace includes a bringing-up section, an auxiliary hot arc and a tempering section, by conveyer device, glass is delivered to from bringing-up section tempering section continuously;
The heating process of bringing-up section is heated by radiant heating pattern or the Convective Heating mode of heating, it is achieved the overall softening to glass, and heating-up temperature is 600-750 DEG C;
Auxiliary hot arc adopts laser mode to carry out auxiliary heating, auxiliary hot temperature is 800 1000 DEG C, it is delivered to the glass temperature of tempering section with realization from bringing-up section transfer process, keeps the scope of a constant temperature, and the micro-crack realizing in auxiliary thermal process, glass surface being retained is repaired;
Tempering section adopts natural cooling or forces the mode of cooling to carry out tempering process.
Embodiment 2
A kind of toughening method of glass, including glass tempering furnace, glass tempering furnace includes a bringing-up section, an auxiliary hot arc and a tempering section, by conveyer device, glass is delivered to from bringing-up section tempering section continuously;
The heating process of bringing-up section is heated by radiant heating pattern or the Convective Heating mode of heating, it is achieved the overall softening to glass, and heating-up temperature is 700-800 DEG C;
Auxiliary hot arc adopts laser mode to carry out auxiliary heating, auxiliary hot temperature is 900 1100 DEG C, it is delivered to the glass temperature of tempering section with realization from bringing-up section transfer process, keeps the scope of a constant temperature, and the micro-crack realizing in auxiliary thermal process, glass surface being retained is repaired;
Tempering section adopts natural cooling or forces the mode of cooling to carry out tempering process.
Claims (10)
1. a toughening method for glass, including glass tempering furnace, glass tempering furnace includes a bringing-up section, an auxiliary hot arc and a tempering section, by conveyer device, glass is delivered to from bringing-up section tempering section continuously, it is characterised in that:
The heating process of bringing-up section is heated by radiant heating pattern or the Convective Heating mode of heating, it is achieved the overall softening to glass, and heating-up temperature is 450-850 DEG C;
Auxiliary hot arc adopts laser mode to carry out auxiliary heating, auxiliary hot temperature is 600 1200 DEG C, it is delivered to the glass temperature of tempering section with realization from bringing-up section transfer process, keeps the scope of a constant temperature, and the micro-crack realizing in auxiliary thermal process, glass surface being retained is repaired;
Tempering section adopts natural cooling or forces the mode of cooling to carry out tempering process.
2. the toughening method of a kind of glass according to claim 1, it is characterised in that: described glass tempering furnace, its bringing-up section, auxiliary hot arc and tempering section are connected as a single entity.
3. the toughening method of a kind of glass according to claim 1, it is characterised in that: described glass tempering furnace, auxiliary hot arc is arranged between bringing-up section and tempering section.
4. the toughening method of a kind of glass according to claim 1, it is characterised in that: described auxiliary hot arc is provided with laser heater.
5. the toughening method of a kind of glass according to claim 4, it is characterised in that: the laser heater of described auxiliary hot arc is symmetricly set on the above-below direction of conveyer device.
6. the toughening method of a kind of glass according to claim 4, it is characterised in that: described laser heater is many groups.
7. the toughening method of a kind of glass according to claim 4, it is characterised in that:
Described laser heater is fixedly installed relative to conveyer device, and glass is heated by laser heater in motor process.
8. the toughening method of a kind of glass according to claim 1, it is characterised in that: the described pressure type of cooling is quenching, liquid cooling or solid cooled.
9. the toughening method of a kind of glass according to claim 1, it is characterised in that: described heating-up temperature is 600-750 DEG C.
10. the toughening method of a kind of glass according to claim 1, it is characterised in that: described auxiliary hot temperature is 800 1000 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610135520.2A CN105645747A (en) | 2016-03-10 | 2016-03-10 | Glass tempering method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610135520.2A CN105645747A (en) | 2016-03-10 | 2016-03-10 | Glass tempering method |
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| Publication Number | Publication Date |
|---|---|
| CN105645747A true CN105645747A (en) | 2016-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610135520.2A Pending CN105645747A (en) | 2016-03-10 | 2016-03-10 | Glass tempering method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112028463A (en) * | 2020-08-07 | 2020-12-04 | 衡山兄弟金属制品有限公司 | Method for manufacturing toughened glass |
| WO2021176123A1 (en) | 2020-03-02 | 2021-09-10 | Consejo Superior De Investigaciones Científicas | Method for modifying a vitreous material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103395976A (en) * | 2013-07-30 | 2013-11-20 | 深圳南玻伟光导电膜有限公司 | Reinforcing method for plate glass |
| CN203923006U (en) * | 2014-06-18 | 2014-11-05 | 洛阳兰迪玻璃机器股份有限公司 | A kind of toughened glass production line |
| CN105198197A (en) * | 2014-06-18 | 2015-12-30 | 洛阳兰迪玻璃机器股份有限公司 | Tempered glass production line |
| CN204999799U (en) * | 2015-08-26 | 2016-01-27 | 巢湖市伟业玻璃有限公司 | Glass tempering furnace |
-
2016
- 2016-03-10 CN CN201610135520.2A patent/CN105645747A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103395976A (en) * | 2013-07-30 | 2013-11-20 | 深圳南玻伟光导电膜有限公司 | Reinforcing method for plate glass |
| CN203923006U (en) * | 2014-06-18 | 2014-11-05 | 洛阳兰迪玻璃机器股份有限公司 | A kind of toughened glass production line |
| CN105198197A (en) * | 2014-06-18 | 2015-12-30 | 洛阳兰迪玻璃机器股份有限公司 | Tempered glass production line |
| CN204999799U (en) * | 2015-08-26 | 2016-01-27 | 巢湖市伟业玻璃有限公司 | Glass tempering furnace |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021176123A1 (en) | 2020-03-02 | 2021-09-10 | Consejo Superior De Investigaciones Científicas | Method for modifying a vitreous material |
| CN115734952A (en) * | 2020-03-02 | 2023-03-03 | 西班牙高等科研理事会 | Method for modifying glass material |
| CN112028463A (en) * | 2020-08-07 | 2020-12-04 | 衡山兄弟金属制品有限公司 | Method for manufacturing toughened glass |
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Application publication date: 20160608 |
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