CN106242258A - A kind of colour killing processing method of titaniferous class phosphate optical glass - Google Patents
A kind of colour killing processing method of titaniferous class phosphate optical glass Download PDFInfo
- Publication number
- CN106242258A CN106242258A CN201610761177.2A CN201610761177A CN106242258A CN 106242258 A CN106242258 A CN 106242258A CN 201610761177 A CN201610761177 A CN 201610761177A CN 106242258 A CN106242258 A CN 106242258A
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- CN
- China
- Prior art keywords
- optical glass
- frock
- colour killing
- titaniferous
- processing method
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Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B25/00—Annealing glass products
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2201/00—Type of glass produced
- C03B2201/60—Silica-free oxide glasses
- C03B2201/70—Silica-free oxide glasses containing phosphorus
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
The invention provides entitled a kind of titaniferous class phosphate optical glass colour killing processing method.Belong to optical glass production technical field.It mainly provides a kind of method that the titaniferous class phosphate optical glass of light transmittance extreme difference is carried out colour killing process.It is mainly characterized by comprising: to use and form air duct with by thermal cycle agitation fan and the Rebuild of Heat-treatment Annealing Furnace of internal frock, hollow axle；Colour killing processes step and includes: (1) optical glass is carried out uniform shove charge；(2) holding temperature is: Tg± 5 DEG C, temperature retention time be: 80 ± 20 hours, at a slow speed rate of temperature fall are: 1 DEG C/H～3 DEG C/H, internal frock rotary speed be: 0 ~ 10 rev/min, and open thermal cycle agitation fan in whole heat treatment process.It is sufficient that hollow axle constantly sends into oxygen concentration in cold air makes stove in stove, it is ensured that it reaches have 70 light transmittances under 440nm or more short wavelength after Overheating Treatment, has 5 light transmittances, it is seen that light transmission rate more than 99 under 390nm or more short wavelength.
Description
Technical field
The invention belongs to optical glass production technical field.It is specifically related to the colour killing of a kind of titaniferous class phosphate optical glass
Processing method.
Background technology
Titaniferous class phosphate optical glass the glass obtained after melting, molding and short annealing be dark-brown or
Close to black, opaque, there is very poor light transmission, affect the inspection of inside glass quality and the use in later stage.Such high folding
Penetrate in the phosphate optical glass component of rate height dispersion containing Ti.Ti is in glass with Ti3+Or Ti4+Presented in, it exists
Form or valence state by the forming of base glass, found atmosphere, fusion temperature and the rate of cooling of glass are affected.At silicate
In glass, typically with Ti4+State exists, colourless, but because of Ti4+Ion absorbs ultraviolet strongly, and it is purple that absorption band enters visible region
Blue portion makes glass show brown color, we therefore see that titaniferous class silicate glass typically present brown color, its light transmission
Requirement can be reached and do not affect the inspection of inside glass quality and the use in later stage.But in titaniferous class phosphate glass, because of it
Defining Lacking oxygen in making glass during melting molding quickly cools, the Ti part in glass is with Ti3+Form
Exist, and Ti3+Defining colourcenter-complex with metaphosphoric acid radical, what therefore melting obtained after cooling down is dark-brown or connects pullous
Glass.There is under the wavelength of 500～520nm the light transmittance of 70, there is under the wavelength of 380～385nm the printing opacity of 5
Rate.
Summary of the invention
The present invention is aiming at the problems referred to above and provides a kind of light transmittance to obtaining after melting, molding and rapid cooling
The titaniferous class phosphate optical glass of extreme difference and method that a kind of colour killing of carrying out processes.
The present invention solves technical problem and be the technical scheme is that at the colour killing of a kind of titaniferous class phosphate optical glass
Reason method, uses with by thermal cycle agitation fan and the Rebuild of Heat-treatment Annealing Furnace of internal frock；Internal frock is fixed on heat treatment
On the turntable of annealing furnace inner bottom part；Internal frock is circular layer structure support；Thermal cycle agitation fan be arranged on through
Hollow axle one end of Rebuild of Heat-treatment Annealing Furnace, the hollow axle other end is connected with motor；Air duct is formed in hollow axle；
Colour killing processing method comprises the following steps:
(1) optical glass is carried out uniform shove charge, it is desirable to by its evenly laid out every layer of frock in annealing furnace；
(2) holding temperature is: Tg± 5 DEG C, temperature retention time be: 80 ± 20 hours, at a slow speed rate of temperature fall are: 1 DEG C/H～3 DEG C/H, interior
Portion's frock (2) rotary speed is: 0 ~ 10 rev/min；And in whole heat treatment process, open thermal cycle agitation fan； TgFor treating
Process the conventional holding temperature of glass；
(3) after Overheating Treatment, optical glass has the light transmittance of 70 under the wavelength of 435～450nm, 370～390nm
Wavelength under have 5 light transmittance, it is seen that light transmission rate more than 99.
The internal-and external diameter of described hollow axle (4) is ￠ 40mm and ￠ 60mm respectively.
Described the (1) in step glass load the height in every layer of frock less than in frock the 1/2 of spatial altitude.
Described (2) in step holding temperature be: Tg± 3 DEG C, temperature retention time be: 80 ± 10 hours, at a slow speed rate of temperature fall
For: 1 DEG C/H～2.5 DEG C/H, internal frock (2) rotary speed it is: 0 ~ 10 rev/min.
The present invention is by the light transmittance extreme difference titaniferous class phosphate optical glass obtained after melting, molding and rapid cooling
Glass carries out lucifuge resisting ultraviolet radiation process to prevent it from causing absorption band to enter hyacinthine portion, visible region because absorbing ultraviolet
Divide so that glass shows brown and transmitance reduces, especially in the transmitance of short-wave band (380～450nm)；Select temperature field equal
The even heat-treatment furnace that all can at the uniform velocity rotate with thermal cycle agitation fan, internal frock and product carries out heat to such optical glass
Treatment process；Select suitable Technology for Heating Processing, including holding temperature (Tg ± 5 DEG C), temperature retention time (80 hours ± 20 hours),
At a slow speed rate of temperature fall (1 DEG C/H～3 DEG C/H) and during whole heat treatment to heat-treatment furnace in be passed through air, i.e. from heat
Process and manage in technique to allow oxygen in sufficiently high temperature and under the sufficiently long time, enter glass, reduce its oxygen vacancy concentration,
Make the Ti that glass Central Plains is unstable3+Ion transfers Ti to through energy jump4+Ion, dismisses Ti3+The colour center formed with metaphosphoric acid radical
Complex, thus ensure it to reach after Overheating Treatment under the wavelength of 440nm or shorter to have the light transmittance of 70,
There is under the wavelength of 390nm or shorter the light transmittance of 5.
The invention has the beneficial effects as follows: by containing the light transmittance extreme difference obtained after melting, molding and rapid cooling
After titanium class phosphate optical glass carries out effective colour killing process, obtain having 70 under the wavelength of 440nm or shorter
Light transmittance, has the light transmittance of 5 under the wavelength of 390nm or shorter, it is seen that light light transmittance more than 99.Particularly at shortwave
Section (380～450nm) has more preferable transmitance.
Accompanying drawing explanation
Fig. 1 is the Rebuild of Heat-treatment Annealing Furnace schematic diagram that temperature field uniformly can be passed through air.
Detailed description of the invention
The one that the present invention be directed to titaniferous class phosphate optical glass and design and produce is after melting, molding and rapid cooling
The opaque dark-brown obtained or the colour killing processing method of the optical glass close to black transparent rate extreme difference.
The colour killing processing method of the present invention a kind of titaniferous class phosphate optical glass uses with by thermal cycle agitation fan 1
Rebuild of Heat-treatment Annealing Furnace with internal frock 2；Internal frock 2 is fixed on the turntable of Rebuild of Heat-treatment Annealing Furnace inner bottom part；Internal work
Filling 2 is the circular layer structure support including layer frame 3；Thermal cycle agitation fan 1 is arranged on the sky through Rebuild of Heat-treatment Annealing Furnace
Mandrel 4 one end, hollow axle 4 other end is connected with motor；Forming air duct in hollow axle 4, the internal-and external diameter of hollow axle 4 is respectively
￠ 40mm and ￠ 60mm.
Colour killing processing method of the present invention comprises the following steps:
(1) optical glass is carried out uniform shove charge, it is desirable to by its evenly laid out every layer of frock in annealing furnace, glass loads
Height in every layer of frock is less than in frock the 1/2 of spatial altitude, it is ensured that the optical glass in every layer of frock is in annealing furnace
There is good hot air circulation effect；
(2) selecting suitable Technology for Heating Processing, holding temperature is: Tg± 5 DEG C, temperature retention time be: 80 ± 20 hours, lower the temperature at a slow speed
Speed is: 1 DEG C/H～3 DEG C/H, internal frock 2 rotary speed be: 0 ~ 10 rev/min；And in whole heat treatment process, open heat
Circulation stirring fan (1), makes the cold air outside stove ensure at heat in sending constantly into stove by the hollow axle 4 of thermal cycle agitation fan
Oxygen concentration in reason stove is sufficient； TgFor the conventional holding temperature of pending glass, handbook can be found；
(3), after Overheating Treatment, optical glass reaches the light transmittance under the wavelength of 440nm or shorter with 70, at 390nm
Or there is under shorter wavelength the light transmittance of 5, it is seen that light transmission rate more than 99.
The opaque dark-brown that obtains after melting, molding and rapid cooling or the titaniferous class close to black transparent rate extreme difference
Phosphate optical glass must carry out lucifuge resisting ultraviolet radiation process to it, can be selected for the special cloth of anti-ultraviolet and hides, in case
Only it reduces its transmitance because absorption ultraviolet causes absorption band entrance visible region hyacinthine part to make glass show brown.
Claims (4)
1. the colour killing processing method of a titaniferous class phosphate optical glass, it is characterised in that: use and stir with by thermal cycle
Fan (1) and internal frock (2) and the Rebuild of Heat-treatment Annealing Furnace of (3)；Internal frock (2) is fixed on Rebuild of Heat-treatment Annealing Furnace inner bottom part
Turntable on；Internal frock (2) is circular layer structure support；Thermal cycle agitation fan (1) is arranged on through heat treatment
Hollow axle (4) one end of annealing furnace, hollow axle (4) other end is connected with motor；Air duct is formed in hollow axle (4)；
Colour killing processing method comprises the following steps:
(1) optical glass is carried out uniform shove charge, it is desirable to by its evenly laid out every layer of frock in annealing furnace；
(2) holding temperature is: Tg± 5 DEG C, temperature retention time be: 80 ± 20 hours, at a slow speed rate of temperature fall are: 1 DEG C/H～3 DEG C/H, interior
Portion's frock (2) rotary speed is: 0 ~ 10 rev/min；And in whole heat treatment process, open thermal cycle agitation fan (1)； TgFor
The conventional holding temperature of pending glass；
(3) after Overheating Treatment, optical glass has the light transmittance of 70 under the wavelength of 435～450nm, 370～390nm
Wavelength under have 5 light transmittance, it is seen that light transmission rate more than 99.
The colour killing processing method of a kind of titaniferous class phosphate optical glass the most according to claim 1, it is characterised in that: institute
The internal-and external diameter of the hollow axle (4) stated is ￠ 40mm and ￠ 60mm respectively.
The colour killing processing method of a kind of titaniferous class phosphate optical glass the most according to claim 1 and 2, its feature exists
In: described the (1) in step glass load the height in every layer of frock less than in frock the 1/2 of spatial altitude.
The colour killing processing method of a kind of titaniferous class phosphate optical glass the most according to claim 1 and 2, its feature exists
In: described (2) in step holding temperature be: Tg± 3 DEG C, temperature retention time be: 80 ± 10 hours, at a slow speed rate of temperature fall are: 1 DEG C/
H～2.5 DEG C/H, internal frock (2) rotary speed be: 0 ~ 10 rev/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610761177.2A CN106242258A (en) | 2016-08-31 | 2016-08-31 | A kind of colour killing processing method of titaniferous class phosphate optical glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610761177.2A CN106242258A (en) | 2016-08-31 | 2016-08-31 | A kind of colour killing processing method of titaniferous class phosphate optical glass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106242258A true CN106242258A (en) | 2016-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610761177.2A Pending CN106242258A (en) | 2016-08-31 | 2016-08-31 | A kind of colour killing processing method of titaniferous class phosphate optical glass |
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| CN (1) | CN106242258A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108129011A (en) * | 2017-12-08 | 2018-06-08 | 湖北新华光信息材料有限公司 | A kind of large scale optical glass fine annealing stove |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5376699A (en) * | 1976-12-17 | 1978-07-07 | Nippon Electric Glass Co | Method of improving color of recurrent reflecting glass bead |
| JPH06345481A (en) * | 1993-06-07 | 1994-12-20 | Ohara Inc | Production of optical glass |
| JP2003048748A (en) * | 2001-05-30 | 2003-02-21 | National Institute Of Advanced Industrial & Technology | Silicate glass easy to be recycled, its production method and recycling method therefor |
| CN104395254A (en) * | 2012-06-22 | 2015-03-04 | Hoya株式会社 | Glass, optical glass, glass raw material for press molding, and optical element |
| CN105198196A (en) * | 2015-10-14 | 2015-12-30 | 湖北新华光信息材料有限公司 | Quick automatic cooling unit for annealing furnaces |
| CN105217940A (en) * | 2015-08-21 | 2016-01-06 | 四川省洪雅县中保光学元件有限公司 | The annealing furnace that a kind of safety is controlled |
-
2016
- 2016-08-31 CN CN201610761177.2A patent/CN106242258A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5376699A (en) * | 1976-12-17 | 1978-07-07 | Nippon Electric Glass Co | Method of improving color of recurrent reflecting glass bead |
| JPH06345481A (en) * | 1993-06-07 | 1994-12-20 | Ohara Inc | Production of optical glass |
| JP2003048748A (en) * | 2001-05-30 | 2003-02-21 | National Institute Of Advanced Industrial & Technology | Silicate glass easy to be recycled, its production method and recycling method therefor |
| CN104395254A (en) * | 2012-06-22 | 2015-03-04 | Hoya株式会社 | Glass, optical glass, glass raw material for press molding, and optical element |
| CN105217940A (en) * | 2015-08-21 | 2016-01-06 | 四川省洪雅县中保光学元件有限公司 | The annealing furnace that a kind of safety is controlled |
| CN105198196A (en) * | 2015-10-14 | 2015-12-30 | 湖北新华光信息材料有限公司 | Quick automatic cooling unit for annealing furnaces |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108129011A (en) * | 2017-12-08 | 2018-06-08 | 湖北新华光信息材料有限公司 | A kind of large scale optical glass fine annealing stove |
| CN108129011B (en) * | 2017-12-08 | 2020-12-29 | 湖北新华光信息材料有限公司 | Precision annealing furnace for large-size optical glass |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161221 |