CN1699229A - Annealing process of glass cone for cathode ray tube - Google Patents
Annealing process of glass cone for cathode ray tube Download PDFInfo
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- CN1699229A CN1699229A CN 200510077427 CN200510077427A CN1699229A CN 1699229 A CN1699229 A CN 1699229A CN 200510077427 CN200510077427 CN 200510077427 CN 200510077427 A CN200510077427 A CN 200510077427A CN 1699229 A CN1699229 A CN 1699229A
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Abstract
Disclosed is an annealing process of glass cone for cathode ray tube wherein transmission net band carrying glass cones to be annealed is in continuous operation in an annealing furnace, the glass cones to be annealed is loaded into the annealing furnace and pass through the following four temperature zones in sequence, namely, (1) temperature slow elevating zone, (2) smooth and steady heat preservation zone, (3) low speed cooling down zone, and (4) fast cooling zone, the four zones extend from the front end of the annealing furnace to the tail end along the conveyor-band, finally reaching the mouth portion of the cooling fan.
Description
Technical field
The invention belongs to vacuum device production-line technique field, particularly each regional temperature of annealing furnace is set in the annealing process of glass cone for cathode ray tube.
Background technology
In the existing annealing process of glass cone for cathode ray tube, owing to set and control not enough rationally with perfect for each regional temperature in the annealing furnace equipment, so that the qualification rate of glass awl product is not high, set higher in the heating zone temperature, cause glass awl heat-up rate too fast easily, cause that the glass awl is damaged in the zone of heating up, burst; When the product refrigerating work procedure, cooling rate is too fast, easily causes glass awl annealing back unrelieved stress excessive, is prone to the breakage of glass awl in process of cooling.For the above-mentioned present situation that faces in producing, our company accumulates the experience of production practice for many years, is devoted to solve the problem of exist actually.
Summary of the invention
Technical problem to be solved by this invention is: higher at setting in the heating zone temperature in the existing annealing process of glass cone for cathode ray tube, glass awl heat-up rate is too fast, causes that easily the glass awl is damaged in the zone of heating up, bursts; Cooling rate is too fast when cooling, causes glass awl residual stress excessive, even crackle, disrepair phenomenon occur.The technological operation requirement that a kind of rational temperature is set and controlled is proposed for this reason, purpose of the present invention, provide a kind of annealing process of glass cone for cathode ray tube, realize that the technical scheme that the technical solution adopted in the present invention is is, a kind of annealing process of glass cone for cathode ray tube, comprise and be loaded with the continuous operation of transporting reticulation belt in annealing furnace of intending annealing glass awl, it is characterized in that, after the glass awl of intending annealing enters annealing furnace with described transporting reticulation belt, four the consecutive temperature provinces of transmitting scriptures successively, they are in the burner hearth: a is the slow heating zone of sign with the interval set temperature value of TR1 TR2 to TR3 TR4 point, b is the steady heat preservation zone of sign with the interval set temperature value of TR3 TR4 to TR5 TR6 point, c is the cooling area at a slow speed of sign with the interval set temperature value of TR5 TR6 to TR9 TR10 point, d is the rapid cooling zone of sign with the interval set temperature value of TR9 TR10 to TR11 TR12 point, the position relation in these four zones is that the defeated guipure of saequential transmission is caudad extended by horizontal type annealing furnace head end, finally reaches the cooling blower oral area.Set up 6 place's temperature monitoring points by head to tail in used horizontal type glass awl annealing furnace, in six distributed points of annealing furnace inner chamber setting with thermocouple temperature measurement, they are TR1 TR2 point, TR3 TR4 point, connect successively, up to TR11 TR12 point.Wherein TR1 TR2 regional temperature is controlled to be 440～490 ℃, thereby reduces the intensification amplitude and the speed of glass awl, effectively reduces breakage in the glass awl temperature-rise period, bursts phenomenon; TR3 TR4 regional temperature is controlled at 470～520 ℃, and the TR5TR6 regional temperature is controlled at 470～500 ℃, guarantees effective elimination of product stress; TR7 TR8 regional temperature is controlled at 350～420 ℃, and TR9 TR10 regional temperature is controlled at 280～330 ℃, and control is rate of cooling more slowly; TR11 TR12 regional temperature is controlled at 150～250 ℃, satisfies the cooling of product and prevents breakage.Wherein said TR1 TR2 to TR3 TR4 interval is the slow heating zone of a, by adjusting the aperture of set stack damper, control fiery internal flue and transmit what of heat to this heating zone, keeping this district temperature to survey is 440～490 ℃, is decided to be the heating zone in this streamline operration operation.In like manner, described TR3 TR4 to TR5 TR6 is the steady heat preservation zone of b, by adjusting the aperture of set stack damper, controls fiery internal flue and transmits what of heat to this heat preservation zone, keeping this district's temperature actual measurement is 470～500 ℃, is decided to be the heat preservation zone in this streamline operration operation.In like manner, described TR5 TR6 to TR9T R10 is a c cooling area at a slow speed, by adjusting the aperture of set stack damper, control fiery internal flue to this at a slow speed cooling area transmit what of heat, actual measurement is 350～420 ℃ at TR7 TR8 place to keep this district's temperature, the TR9 TR10 place actual measurement that is right after is 280～330 ℃, is decided to be the cooling area at a slow speed in this streamline operration operation.In like manner, described TR9 TR10 to TR11 TR12 is the d rapid cooling zone, by adjusting the aperture of set stack damper, control fiery internal flue to this at a slow speed cooling area transmit what of heat, actual measurement is 150～250 ℃ at TR11 TR12 place to keep this district's temperature, is decided to be the rapid cooling zone in this streamline operration operation.
The invention has the beneficial effects as follows: effectively solved intensification zone and the problem of lowering the temperature regional glass awl cracky, bursting in the existing annealing process of glass cone for cathode ray tube, effectively reduced the residual stress after glass bulb for cathode-ray tube is annealed.
Description of drawings
Fig. 1 is a glass bulb for cathode-ray tube annealing furnace synoptic diagram
Fig. 2 a, 2b, 2c are the stack damper synoptic diagram
Fig. 3 a, 3b, 3c are the exhaust flap synoptic diagram
Fig. 4 is the desirable annealing curve of glass bulb for cathode-ray tube annealing furnace
Fig. 5 is the actual annealing curve of glass bulb for cathode-ray tube annealing furnace
Embodiment
Represent described glass awl annealing furnace synoptic diagram with reference to Fig. 1, among the figure, horizontal type annealing furnace L, body of heater head end place 1 be a flue, fiery chamber 2 is coupled, stack damper 3 along many places setting in the furnace chamber in order to regulate each regional temperature.Its operation sequence is:
1. body of heater head end regional temperature is set at: 470～530 ℃, adjust the aperture of stack damper 3, control fiery chamber 2 and transmit what of heat toward heating zone by flue 1, make TR1 TR2 temperature remain on 440～490 ℃, thereby the heat-up rate of control glass awl effectively reduces glass and bores the breakage of cone in the temperature-rise period, bursts;
2. the front end area temperature that body of heater is close to head end is set at: 470～520 ℃, adjust the aperture of stack damper 3, control fiery chamber 2 and transmit what of heat toward heat preservation zone by flue 1, make TR5 TR6 temperature remain on 470～500 ℃, product temperature than the constant zone in the insulation for some time after, cone stress is fully eliminated;
3. adjust the aperture of stack damper 3 and exhaust flap 4, TR7 TR8 regional temperature is controlled at 350～420 ℃, TR9 TR10 regional temperature is controlled at 280～330 ℃, makes product keep rate of temperature fall more slowly, prevent product in temperature-fall period because of the new stress of too fast generation of lowering the temperature;
4. adjust the aperture of exhaust flap 4, TR11 TR12 regional temperature is controlled at 150～250 ℃, guarantee effective cooling of glass awl, and avoid the glass awl because lower the temperature too fast occur cone crackle, breakage.Among Fig. 14 is exhaust flap, and she also is that many places are provided with, and position thereafter is provided with top board 5, butterfly baffle 6, and the back is a cooling blower 7, transporting reticulation belt is 8.
With reference to Fig. 2 a～3c, expression stack damper synoptic diagram, stack damper 3 is by investigation mission outside the city or town handle 3.1 its apertures of control among the figure, thereby control its hot gas flow, its aperture is zero when baffle plate is positioned at a position, when baffle plate is positioned at the b position, its aperture is h1, when baffle plate was positioned at the C position, its aperture was h2, reached the maximum opening value.
With reference to Fig. 3 a～3c, expression exhaust flap synoptic diagram, exhaust flap 4 is outlet dampers that the control hot gas flow is overflowed toward annealing furnace L outside among the figure.Fig. 4 represents an ideal annealing curve in this annealing furnace, is to draw by setting temperature value, but in the reality, the adjusting of temperature is can not be so desirable, thereby all temps distribution curve of just expressing in the pipelining to be measured at Fig. 5.
Claims (5)
1. annealing process of glass cone for cathode ray tube, comprise and be loaded with the continuous operation of transporting reticulation belt in annealing furnace of intending annealing glass awl, it is characterized in that, after the glass awl of intending annealing enters annealing furnace with described transporting reticulation belt, four the consecutive temperature provinces of transmitting scriptures successively, they are in the burner hearth: a puts the slow heating zone that interval set temperature value is a sign with TR1TR2 to TR3TR4, b puts the steady heat preservation zone that interval set temperature value is a sign with TR3TR4 to TR5TR6, c puts the cooling area at a slow speed that interval set temperature value is a sign with TR5TR6 to TR9TR10, d puts the rapid cooling zone that interval set temperature value is a sign with TR9TR10 to TR11TR12, the position relation in these four zones is that the defeated guipure of saequential transmission is caudad extended by horizontal type annealing furnace head end, finally reaches the cooling blower oral area.
2. annealing process of glass cone for cathode ray tube according to claim 1, it is characterized in that, described TR1TR2 to TR3TR4 interval is the slow heating zone of a, by adjusting the aperture of set stack damper, control fiery internal flue and transmit what of heat to this heating zone, keeping this district's temperature actual measurement is 440～490 ℃, is decided to be the heating zone in this streamline operration operation.
3. annealing process of glass cone for cathode ray tube according to claim 1, it is characterized in that, described TR3TR4 to TR5TR6 is the steady heat preservation zone of b, by adjusting the aperture of set stack damper, control fiery internal flue and transmit what of heat to this heat preservation zone, keeping this district's temperature actual measurement is 470～500 ℃, is decided to be the heat preservation zone in this streamline operration operation.
4. annealing process of glass cone for cathode ray tube according to claim 1, it is characterized in that, described TR5TR6 to TR9TR10 is a c cooling area at a slow speed, by adjusting the aperture of set stack damper, control fiery internal flue to this at a slow speed cooling area transmit what of heat, actual measurement is 350～420 ℃ at the TR7TR8 place to keep this district's temperature, and the TR9TR10 place actual measurement that is right after is 280～330 ℃, is decided to be the cooling area at a slow speed in this streamline operration operation.
5. annealing process of glass cone for cathode ray tube according to claim 1, it is characterized in that, described TR9TR10 to TR11TR12 is the d rapid cooling zone, by adjusting the aperture of set stack damper, control fiery internal flue to this at a slow speed cooling area transmit what of heat, actual measurement is 150～250 ℃ at the TR11TR12 place to keep this district's temperature, is decided to be the rapid cooling zone in this streamline operration operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510077427 CN1699229A (en) | 2005-06-23 | 2005-06-23 | Annealing process of glass cone for cathode ray tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510077427 CN1699229A (en) | 2005-06-23 | 2005-06-23 | Annealing process of glass cone for cathode ray tube |
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| CN1699229A true CN1699229A (en) | 2005-11-23 |
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| CN 200510077427 Pending CN1699229A (en) | 2005-06-23 | 2005-06-23 | Annealing process of glass cone for cathode ray tube |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107056031A (en) * | 2017-04-13 | 2017-08-18 | 四川圣典节能服务有限公司 | A kind of electricity-saving lamp annealing process |
| CN111039579A (en) * | 2019-12-31 | 2020-04-21 | 沧州天瑞星光热技术有限公司 | Low-temperature annealing process for reducing stress of glass-metal sealing structure |
| CN115711857A (en) * | 2023-01-06 | 2023-02-24 | 坛墨质检科技股份有限公司 | Residual detection experimental device and detection method for lead ion standard solution |
-
2005
- 2005-06-23 CN CN 200510077427 patent/CN1699229A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107056031A (en) * | 2017-04-13 | 2017-08-18 | 四川圣典节能服务有限公司 | A kind of electricity-saving lamp annealing process |
| CN111039579A (en) * | 2019-12-31 | 2020-04-21 | 沧州天瑞星光热技术有限公司 | Low-temperature annealing process for reducing stress of glass-metal sealing structure |
| CN115711857A (en) * | 2023-01-06 | 2023-02-24 | 坛墨质检科技股份有限公司 | Residual detection experimental device and detection method for lead ion standard solution |
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