CN103319082B - The manufacture method of ultra-thin thermal reinforced glass - Google Patents
The manufacture method of ultra-thin thermal reinforced glass Download PDFInfo
- Publication number
- CN103319082B CN103319082B CN201310261080.1A CN201310261080A CN103319082B CN 103319082 B CN103319082 B CN 103319082B CN 201310261080 A CN201310261080 A CN 201310261080A CN 103319082 B CN103319082 B CN 103319082B
- Authority
- CN
- China
- Prior art keywords
- glass
- roller
- ultra
- way
- thin
- 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.)
- Expired - Fee Related
Links
Landscapes
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
The invention discloses a kind of manufacture method of ultra-thin thermal reinforced glass, it comprises the steps: ultra-thin glass thick for 1.8-2.2mm to lie on roller-way, by the pressure adjusting of convected air in annealing furnace to 2000-4000pa/cm
2, convection current time 30-50s, roller-way drives glass with the speed of 20-30mm/s to-and-fro movement 40-50S in annealing furnace simultaneously, then roller-way running speed is adjusted to 160-175mm/s, until glass heats is to 623-630 °; Utilize the glass of this method manufacture to avoid the generation of " white mist ", glass flatness is good, and intensity is high, good toughness.
Description
Technical field
The present invention relates to glass-making processes, particularly relate to a kind of manufacture method of ultra-thin thermal reinforced glass.
Background technology
Thermal reinforced glass is also known as semi-tempered glass, it is a kind between ordinary plate glass and toughened glass, it is with the certain advantages of toughened glass, float glass as more common in intensity is high, is the several times of common float glass, and planeness is higher than the planeness of toughened glass simultaneously, not easily reveal, can not Integral-crushing once destroy, therefore, be widely used.
At present, thickness is that the ultra-thin thermal reinforced glass of 1.8-2.2mm mainly exists following problem: the first, the planeness of glass does not reach the requirement (≤3 ‰) of GB, the especially large-area glass of 1.6-2.5 square metre.The second, glass produces and easily produces distortion in heat-processed, glass localized contact roller-way overlong time, and produces fraying of surface, is formed " white mist ".Three, due to heating uneven and method of cooling is improper, make strengthen after glass surface Stress non-homogeneity, not easily again cut.
Produce the reason of these problems mainly: the first, the type of heating of existing glass and control method are not suitable for the glass of 1.8-2.2mm thickness.Traditional heating mainly uses radiant heating pattern, and glass enters in process furnace with normal temperature, and the bottom of glass is with radiation, transmits heat form acquisition heat; But top is stove silk or radial lamella direct radiation glass.Radial lamella is divided into unit by stove silk, and there are thermal expansion and assemblage gap in the place of unit docking, and the radiation making pair glass is uneven; And the temperature between each unit is not transmitted.Glass is uneven owing to being heated, and can produce flexural deformation, and the distortion of glass just causes local and ceramic roller friction, thus the local creating glass frays.So the common float glass that the tempering heating process of existing glass has been not suitable for thickness is 1.8-2.2mm is strengthened.
The second, glass is when heating, and for making glass be heated evenly, glass top adopts convective heating usually, but now convection current adopts in annealing furnace is pressurized air, and compressed-air actuated convection current is high pressure, to flowing pressure at 0.3-0.5Mpa/cm
2, and few to flow point, the phenomenon that pressure between excessive, adjacent two gas orifices of convection current dot center pressure and between two row's convection tubess is too small can be caused, thin glass heats initial deformation can be made more serious, so that tempering cannot be carried out to the glass of 1.8-2.2mm.
Three, the method for cooling makes strength of glass wayward.Present glass tempering is after glass heats to tempering temperature, comes out of the stove immediately, with the cold glass of wind, forms tempering.Because wind blows to glass from aperture, the center blast in each hole is large, and the middle portion blast in two holes is little, the blowing although glass moves, and the intensity of the different sites of glass is different.How to be the intensity of glass evenly, namely the surface stress of glass is evenly be crucial.
Based on the problems referred to above, the glass that the manufacture method of common ultra-thin thermal reinforced glass is difficult to thickness is 1.8-2.2 millimeter carries out efficient hardening.
Summary of the invention
The object of this invention is to provide a kind of manufacture method of ultra-thin thermal reinforced glass, in order to solve the defect of above-mentioned prior art.
In order to achieve the above object, technical scheme provided by the present invention is: a kind of manufacture method of ultra-thin thermal reinforced glass, it comprises the steps:
(1) heat treated: lie on roller-way by ultra-thin glass thick for 1.8-2.2mm, glass is transferred in annealing furnace and heats, by the pressure adjusting of convected air in annealing furnace to 2000-4000pa/cm
2convection current time 30-50s, roller-way drives glass with the to-and-fro movement in annealing furnace of the speed of 20-30mm/s simultaneously, and roller-way drives glass to run 40-50S under the running speed of 20-30mm/s, then roller-way running speed is adjusted to 160-175mm/s, until glass heats is to 623-630 °;
(2) quenching: the ultra-thin glass being heated to 623-630 ° is sent to quench area by roller-way, roller-way drives glass with the speed of 130-250mm/s in quench area to-and-fro movement, with the blast of 1500-2500pa, glass is dried 2-5S simultaneously, glass temperature is down to 400-460 °, then stop blowing, glass continues to-and-fro movement 5-15S;
(3) cooling process: again dry to the glass after quenching 5-15S, blast controls at 1500-2500pa, until glass cools completely, reaches normal temperature, forms ultra-thin thermal reinforced glass.
Further, described roller-way comprises roller-way support and some ceramic roll shafts, and described ceramic roll shaft is set up on roller-way support; The diameter of described ceramic roll shaft is 50-60mm, and ceramic roller between centers is 95-115mm.
Further, the thickness of described ultra-thin glass is 2mm.
Further, described ultra-thin glass is float glass.
Adopt technique scheme, technique effect of the present invention has:
1, the present invention changes traditional radiation heating form, and the radial lamella of multiple segmentations on annealing furnace top changes an integral radiation pipe into, increases swept area, and glass is heated soon, more balanced.The rate of heating on reinforced glass top and equalization temperature.
2, the present invention changes the form of top convection current, by the form of the few convection holes of the high pressure of 0.3-0.5Mpa/cm2, change 2000-4000pa/cm2 into close to the form using pressure and multipair discharge orifice, rolling up of convection holes, avoid the compressed-air actuated inequality to flow, the rate of heating on reinforced glass top and equalization temperature.
3, during heating, control the running speed of roller-way and heat-up time, effectively avoid glass to produce " white mist ", and glass be heated also evenly.
4, quenching method of the present invention can make the stress of glass more even, and intensity is better.
5, glass surface planeness of the present invention can reach less than 3 ‰, and meet international standards requirement.
Accompanying drawing explanation
Fig. 1 is annealing furnace structural representation of the present invention;
Fig. 2 is the side-view of annealing furnace of the present invention;
Wherein: 1, stove silk, 2, radiator tube, 3, convection tubes, 4, roller-way, 31, gas orifice, 41, ceramic roller bearing.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
General thickness is the thin float glass of 1.8-2.2mm, is difficult to utilize traditional glass tempering furnace to carry out efficient hardening to it.This is because generally adopt the mode of radial lamella radiation to carry out radiation heating to glass top in the upper furnace of common annealing furnace, some stove silks are transversely lifted with at burner hearth, lifting radial lamella corresponding below stove silk, several radial lamellas are interrupted setting mutually, owing to there is gap between each radial lamella, radiation scope is restricted, and causes the inequality of being heated of glass, produces diastrophic situation.Therefore, the ultra-thin glass of 1.8-2.2mm is at the heating initial stage, and the uniform type of heating of glass upper and lower surface and different zones heating equalized form are that glass is smooth and at all indeformable.
For realizing manufacture method of the present invention, first common glass tempering furnace being improved, glass being heated faster, evenly.
Concrete, as depicted in figs. 1 and 2, the radial lamella of existing glass tempering furnace is changed into and makes radiator tube 2 by Heat-Resisting Stainless Steel Tube, be arranged on the below of stove silk 1 in upper furnace body, some radiator tubes 2 paralleled are connected together side by side, the radiating surface of composition is waviness radiating surface, with the radial lamella ratio of existing employing, swept area of the present invention adds nearly 60%, the speed of heat trnasfer is faster, radiator tube 2 is an one-piece construction, though through the heating of different stove silk, being heated of radiator tube 2 entirety can be very even, even to the radiation heating of glass, the ultra-thin glass avoiding 1.8-2.2mm produces flexural deformation because of local heating.The spacing of convection tubes 3 is 260-300mm, and convection tubes 3 is communicated with blower fan, and the diameter of the gas orifice 31 on convection tubes 3 is set to 2-3mm, and the spacing along convection tubes 3 length direction gas orifice 31 is 50mm; Air feeder blower fan of the present invention replaces common gas-holder, changes the form of top convection current, by 0.3-0.5Mpa/cm simultaneously
2the form of the few convection holes of high pressure, change 2000-4000pa/cm into
2close to the form using pressure and multipair discharge orifice, rolling up of convection holes, avoids the compressed-air actuated inequality to flow, and blower fan adopts frequency conversion procedure auto-control, comes rate of heating and the equalization temperature on reinforced glass top with this.Roller-way comprises roller-way support and some ceramic roll shafts 41, and described ceramic roll shaft 41 is set up on roller-way support.The diameter of described ceramic roll shaft 41 is 50-60mm, and ceramic roll shaft 41 spacing is 95-115mm.
In heat-processed, first control at 20-30mm/s by the running speed of roller-way 4, roller-way drives glass to run 40-50S under the running speed of 20-30mm/s, after preventing heating initial stage glass to be heated, with roller-way 4, Relative friction occurs, and produces " white mist "; Then roller-way 4 running speed is adjusted to 160-175mm/s, glass is fully heated, and surface stress is even; Follow the requirement of toughened glass, glass heats is to 623-630 °.While glass enters and heats in annealing furnace, by the pressure adjusting of convected air in annealing furnace to 2000-4000pa/cm
2, convection current time 30-50s.
In quenching process, the ultra-thin glass of the 1.8-2.2mm after heat treated is sent to quench area by roller-way, roller-way drives glass with the speed to-and-fro movement of 130-250mm/s, to glass blowing 2-5S under the blast of 1500-2500pa, glass temperature is down to 400-460 °, then stop blowing, roller-way continues to drive glass to-and-fro movement 5-15 second.First time blowing is the intensity increasing glass, and the object stopping blowing making the intensity of this glass more balanced.Because the glass temperature after first time blowing is at 400-460 degree, this temperature is greater than the temperature 390 DEG C of strain point, is less than the temperature 520-590 DEG C of transition point.
In cooling process process, again dry to the glass after quenching, blast controls at 1500-2500pa, until glass cools completely.Glass is made to obtain more uniform intensity level in this approach.The present invention can utilize infrared thermometer to measure in real time glass temperature.
Adopt above-mentioned reasonable quench cooled mode, the intensity of glass and toughness are reached and uses needs, and can cut, the planeness of glass reaches the requirement of GB.
Be below specific embodiments of the invention:
Embodiment one
Lie on roller-way by ultra-thin glass thick for 1.8-2.2mm, glass is transferred in annealing furnace and heats, by the pressure adjusting of convected air in annealing furnace to 2000pa/cm
2, convection current time 30s, roller-way drives glass with the to-and-fro movement in annealing furnace of the speed of 20mm/s simultaneously, and roller-way drives glass to run 40S under the running speed of 20mm/s, then roller-way running speed is adjusted to 160mm/s, until glass heats is to 623 °;
The ultra-thin glass being heated to 623 ° is sent to quench area by roller-way, roller-way drives glass with the speed of 130mm/s in quench area to-and-fro movement, to dry 2S to glass with the blast of 1500pa simultaneously, glass temperature is down to 460 °, then stop blowing, glass continues to-and-fro movement 5S;
Again dry to the glass after quenching 5S, blast controls at 1500pa, until glass cools completely, reaches normal temperature, forms ultra-thin thermal reinforced glass.
Embodiment two
Lie on roller-way by ultra-thin glass thick for 1.8-2.2mm, glass is transferred in annealing furnace and heats, by the pressure adjusting of convected air in annealing furnace to 3000pa/cm
2, convection current time 40s, roller-way drives glass with the to-and-fro movement in annealing furnace of the speed of 25mm/s simultaneously, and roller-way drives glass to run 45S under the running speed of 25mm/s, then roller-way running speed is adjusted to 168mm/s, until glass heats is to 626 °;
The ultra-thin glass being heated to 626 ° is sent to quench area by roller-way, roller-way drives glass with the speed of 190mm/s in quench area to-and-fro movement, to dry 3.5S to glass with the blast of 2000pa simultaneously, glass temperature is down to 430 °, then stop blowing, glass continues to-and-fro movement 10S;
Again dry to the glass after quenching 10S, blast controls at 2000pa, until glass cools completely, reaches normal temperature, forms ultra-thin thermal reinforced glass.
Embodiment three
Lie on roller-way by ultra-thin glass thick for 1.8-2.2mm, glass is transferred in annealing furnace and heats, by the pressure adjusting of convected air in annealing furnace to 4000pa/cm
2, convection current time 50s, roller-way drives glass with the to-and-fro movement in annealing furnace of the speed of 30mm/s simultaneously, and roller-way drives glass to run 50S under the running speed of 30mm/s, then roller-way running speed is adjusted to 175mm/s, until glass heats is to 630 °;
The ultra-thin glass being heated to 630 ° is sent to quench area by roller-way, roller-way drives glass with the speed of 250mm/s in quench area to-and-fro movement, to dry 5S to glass with the blast of 2500pa simultaneously, glass temperature is down to 400 °, then stop blowing, glass continues to-and-fro movement 15S;
Again dry to the glass after quenching 15S, blast controls at 2500pa, until glass cools completely, reaches normal temperature, forms ultra-thin thermal reinforced glass.
Through test determination, utilize the glass that manufacture method of the present invention manufactures, the surface stress intensity of glass reaches 25-30Mpa.And use the break bar of high alloy intensity to cut.Following table is the performance comparison table of glass and the simple glass utilizing manufacture method of the present invention to manufacture;
From then on table can be found out, by above measure, achieves the homogeneous heating of glass and the uniform strength of tempering, and the surface stress of glass, shock strength and planeness, compared with simple glass, are all significantly increased, and can realize cutting.
Finally it should be noted that, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (4)
1. a manufacture method for ultra-thin thermal reinforced glass, is characterized in that, it comprises the steps:
(1) heat treated: lie on roller-way by ultra-thin glass thick for 1.8-2.2mm, glass is transferred in annealing furnace and heats, by the pressure adjusting of convected air in annealing furnace to 2000-4000 pa/cm
2the spacing of convection tubes is 260-300mm, the diameter of the gas orifice on convection tubes is set to 2-3mm, spacing along convection tubes length direction gas orifice is 50mm, convection current time 30-50s, roller-way drives glass with the to-and-fro movement in annealing furnace of the speed of 20-30mm/s simultaneously, and roller-way drives glass to run 40-50S under the running speed of 20-30mm/s, then roller-way running speed is adjusted to 160-175mm/s, until glass heats is to 623-630 DEG C;
(2) quenching: the ultra-thin glass being heated to 623-630 DEG C is sent to quench area by roller-way, roller-way drives glass with the speed of 130-250mm/s in quench area to-and-fro movement, with the blast of 1500-2500pa, glass is dried 2-5S simultaneously, glass temperature is down to 400-460 DEG C, then stop blowing, glass continues to-and-fro movement 5-15S;
(3) cooling process: again dry to the glass after quenching 5-15S, blast controls at 1500-2500pa, until glass cools completely, reaches normal temperature, forms ultra-thin thermal reinforced glass.
2. the manufacture method of ultra-thin thermal reinforced glass according to claim 1, is characterized in that: described roller-way comprises roller-way support and some ceramic roll shafts, and described ceramic roll shaft is set up on roller-way support; The diameter of described ceramic roll shaft is 50-60mm, and ceramic roller between centers is 95-115mm.
3. the manufacture method of ultra-thin thermal reinforced glass according to claim 1, is characterized in that: the thickness of described ultra-thin glass is 2mm.
4. the manufacture method of the ultra-thin thermal reinforced glass according to claim 1 or 3, is characterized in that: described ultra-thin glass is float glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310261080.1A CN103319082B (en) | 2013-06-27 | 2013-06-27 | The manufacture method of ultra-thin thermal reinforced glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310261080.1A CN103319082B (en) | 2013-06-27 | 2013-06-27 | The manufacture method of ultra-thin thermal reinforced glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103319082A CN103319082A (en) | 2013-09-25 |
| CN103319082B true CN103319082B (en) | 2015-09-16 |
Family
ID=49188182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310261080.1A Expired - Fee Related CN103319082B (en) | 2013-06-27 | 2013-06-27 | The manufacture method of ultra-thin thermal reinforced glass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103319082B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9776905B2 (en) | 2014-07-31 | 2017-10-03 | Corning Incorporated | Highly strengthened glass article |
| US10611664B2 (en) | 2014-07-31 | 2020-04-07 | Corning Incorporated | Thermally strengthened architectural glass and related systems and methods |
| US11097974B2 (en) | 2014-07-31 | 2021-08-24 | Corning Incorporated | Thermally strengthened consumer electronic glass and related systems and methods |
| CN104860524B (en) * | 2015-04-08 | 2017-07-07 | 东莞南玻工程玻璃有限公司 | Suitable for the ceramic roller transmission speed adjusting method of annealing furnace |
| CN105236718A (en) * | 2015-08-23 | 2016-01-13 | 洛阳新兆电子有限公司 | Heating process of heating section of thermal-forming furnace for mobile phone 3D curve-surface glass cover plate |
| KR101952085B1 (en) | 2016-01-12 | 2019-05-21 | 코닝 인코포레이티드 | Thin, thermally and chemically tempered glass-based products |
| US11795102B2 (en) | 2016-01-26 | 2023-10-24 | Corning Incorporated | Non-contact coated glass and related coating system and method |
| WO2019040818A2 (en) | 2017-08-24 | 2019-02-28 | Corning Incorporated | Glasses with improved tempering capabilities |
| TW201917340A (en) * | 2017-08-31 | 2019-05-01 | 美商康寧公司 | Improved ceramic roller bed and measurement method |
| CN107572764A (en) * | 2017-09-07 | 2018-01-12 | 洛阳兰迪玻璃机器股份有限公司 | A kind of glass plate convection type heating means |
| TWI785156B (en) | 2017-11-30 | 2022-12-01 | 美商康寧公司 | Non-iox glasses with high coefficient of thermal expansion and preferential fracture behavior for thermal tempering |
| KR20210154825A (en) | 2019-04-23 | 2021-12-21 | 코닝 인코포레이티드 | Glass laminate with definite stress profile and method for manufacturing the same |
| CN114514115B (en) | 2019-08-06 | 2023-09-01 | 康宁股份有限公司 | Glass laminate with embedded stress spike for crack prevention and method of making same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004026775A3 (en) * | 2002-09-19 | 2004-06-24 | Premakaran T Boaz | System and method for simultaneously meating and cooling glass to produce tempered glass |
| 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 |
| CN101429841A (en) * | 2007-11-06 | 2009-05-13 | 洛阳鑫德安全玻璃技术有限公司 | 2mm silk-screen strengthened glass and wood plank combined kitchen cabinet door board production technology |
| CN102503099A (en) * | 2011-10-31 | 2012-06-20 | 中山市格兰特实业有限公司火炬分公司 | Method for tempering 4-6mm low-E (low emissivity) glass |
| CN102531365A (en) * | 2010-12-30 | 2012-07-04 | 洛阳北方玻璃技术股份有限公司 | Method for producing semi-tempered glass |
-
2013
- 2013-06-27 CN CN201310261080.1A patent/CN103319082B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004026775A3 (en) * | 2002-09-19 | 2004-06-24 | Premakaran T Boaz | System and method for simultaneously meating and cooling glass to produce tempered glass |
| 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 |
| CN101429841A (en) * | 2007-11-06 | 2009-05-13 | 洛阳鑫德安全玻璃技术有限公司 | 2mm silk-screen strengthened glass and wood plank combined kitchen cabinet door board production technology |
| CN102531365A (en) * | 2010-12-30 | 2012-07-04 | 洛阳北方玻璃技术股份有限公司 | Method for producing semi-tempered glass |
| CN102503099A (en) * | 2011-10-31 | 2012-06-20 | 中山市格兰特实业有限公司火炬分公司 | Method for tempering 4-6mm low-E (low emissivity) glass |
Non-Patent Citations (2)
| Title |
|---|
| 浅谈钢化玻璃生产过程中的温控工艺;许伟光;《玻璃与搪瓷》;20101231;第38卷(第6期);第22-23页以及第33页 * |
| 王承遇等.安全玻璃.《玻璃材料手册"》.化学工业出版社,2008,第73-82页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103319082A (en) | 2013-09-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103319082B (en) | The manufacture method of ultra-thin thermal reinforced glass | |
| CN103667666B (en) | Heat treatment method of continuous roller hearth type heat treatment furnace for plates | |
| CN104313295B (en) | Roller hearth type plate continuous tempering furnace and tempering method thereof | |
| CN105271667A (en) | Cooling system for tempered glass and cooling method thereof | |
| CN105621871A (en) | Glass toughening system and preparation method of toughened glass | |
| CN106865964A (en) | Isothermal, isobaric Multi-use ultra-thin glass toughening equipment equipment | |
| CN1843988A (en) | Process for preparing physical toughened thin glass | |
| CN103170704B (en) | A kind of special thick middle, high-carbon and the flame cutting technique of steel alloy steel plate | |
| CN105936586A (en) | Glass heating furnace and heating method | |
| CN103898280A (en) | Residual-heat available roll-bar type rapid-cooling furnace | |
| CN105621872A (en) | Energy-saving glass tempering furnace unit and production process for tempered glass of unit | |
| CN206607164U (en) | A kind of glass tempering furnace producing line | |
| CN110002732A (en) | A method of control glass heating | |
| CN103274586B (en) | Glass tempering furnace | |
| CN104388662B (en) | Roller hearth type plate continuous tempering furnace and tempering method thereof | |
| CN204224446U (en) | Air knife type forced convection type glass tempering process furnace | |
| CN210103754U (en) | Air-cooled horizontal roller way for producing toughened glass | |
| CN104775012A (en) | Broad-width induction heating method and device used for uniform heating of strip steel | |
| CN203144279U (en) | High/low-pressure energy-saving type tempered glass electric furnace | |
| CN213924487U (en) | Air grid structure for reducing stress spots of toughened glass | |
| CN110078361A (en) | A kind of flame resistant glass tempering furnace | |
| CN206486427U (en) | Isothermal, isobaric Multi-use ultra-thin glass toughening equipment equipment | |
| CN202543046U (en) | Forced convection heating device for low emissivity coated glass | |
| FI83072C (en) | FOERFARANDE OCH ANORDNING FOER ATT FOERHINDRA BOEJNINGEN AV GLASSKIVOR I EN MED VALSAR FOERSEDD UGN I EN HORISONTALHAERDNINGSANORDNING. | |
| CN209081933U (en) | A kind of steel strip annealing furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 Termination date: 20190627 |