CN105621871A - Glass toughening system and preparation method of toughened glass - Google Patents
Glass toughening system and preparation method of toughened glass Download PDFInfo
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- CN105621871A CN105621871A CN201510983575.4A CN201510983575A CN105621871A CN 105621871 A CN105621871 A CN 105621871A CN 201510983575 A CN201510983575 A CN 201510983575A CN 105621871 A CN105621871 A CN 105621871A
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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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- 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
- C03B27/0417—Controlling or regulating for flat or bent glass sheets
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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
- C03B27/04—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
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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
- C03B27/04—Tempering or quenching glass products using gas
- C03B27/044—Tempering or quenching glass products using gas for flat or bent glass sheets being in a horizontal position
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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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- Physics & Mathematics (AREA)
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- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
The invention relates to a glass toughening system and a preparation method of toughened glass. The glass toughening system comprises a toughening furnace as well as a cutting machine, a trimming machine, an automatic cleaning and drying machine and a printer, wherein the cutting machine, the trimming machine, the automatic cleaning and drying machine and the printer are connected in sequence; the printer is connected with the toughening furnace; the toughening furnace is further connected with a frequency converter, a thermocouple and a fan respectively; the fan is connected with a motor; the motor is connected with the frequency converter; the frequency converter connected with the toughening furnace is connected with a temperature controller; the temperature controller is connected with the thermocouple. The invention provides a set of automatic production device, the energy can be saved, toughening process uniformity is controlled, heating and cooling uniformity is effectively ensured, the self-explosion rate is greatly reduced, the labor is reduced, and the benefits of a factory are effectively increased.
Description
(1) technical field
The present invention relates to safety glass, the preparation method being specifically related to a kind of glass tempering system and safety glass thereof.
(2) background technology
Existing safety glass technique factory is generally adopted physical method---and air-blast quenching method produces safety glass, its principle is to be heated to by simple glass close to softening temperature in heating furnace, insulation a period of time, then this glass is sent into rapidly chiller, with low-temperature and high-speed air-flow, glass is carried out uniform quenching, glass inner layer is made to produce tensile stress, outer surface produces compressive stress, the safety glass so formed has excellent in cushion effect, higher 4 times to 5 times than ordinary plate glass, bending strength is big, higher 5 times than ordinary plate glass, Heat stability is good and bright and clean, transparent, the feature such as can cut.
In its production process, the self-destruction of safety glass is difficult to control, and especially big and thin glass self-explosion is higher, heating in tempering and cooling procedure, if controlling bad temperature and air quantity, it is easy to cause that inside glass stress distribution is uneven and cause self-destruction. Therefore tempering stress should control in suitable scope, so both can ensure that safety glass debris particle degree meets relevant requirement, also be avoided that the heavily stressed unnecessary self-destruction risk caused. Improve yield rate.
(3) summary of the invention
The preparation method that the invention provides a kind of glass tempering system and safety glass thereof.
The present invention is achieved through the following technical solutions:
A kind of preparation method of safety glass, it is characterized in that and comprises the following steps:
(1) selection of former sheet glass: select the excellent glass of quality as former sheet glass;
(2) cutting: being cut by template according to the size of required product, different drills should be selected to cut the glass of different size different-thickness, wherein edge to be stayed with suitable distance for breaking limit;
(3) limit is broken: get rid of the glass after cutting;
(4) edging: rinse edging place with clear water while edging;
(5) boring: according to the requirement of finished product and in order to prevent the self-destruction of later stage glass, suitably glass is holed;
(6) cleaning-drying: cleansing medium used is clear water, recycle, within two days one, change, the glass after cleaning with and automatically dry;
(7) printing is dry: according to customer requirement, at Glass base, the glass silk screen that there is a need to stamp is stamped corresponding pattern;
(8) tempering: glass enters heating furnace through clean roller-way, is carried out tempering;
(9) cooling, product inspection, packaging warehouse-in.
In step (8), safety glass heat time heating time, when guaranteeing that glass is heated evenly, by (40��50) second/mm(thickness of glass) set heat time heating time.
In step (9), the distance between nozzle and glass surface is between 10 20mm, and cool time is the 15-25 second.
Glass is when quenching district chilling, and glass plate upper and lower surface bears identical heat exchange and identical gas shock.
The preparation method of safety glass, also include homogenizing to process, safety glass is heated again, make temperature reach 277-293 DEG C to be incubated, nickel sulfide is made to complete the transformation of crystalline phase before glass dispatches from the factory, allowing it may happen that the glass revealed crushes in advance in factory, when homogenizing processes, between the sheet glass in homogeneous furnace, space has at least 20mm.
A kind of glass tempering system, including annealing furnace, the cutting machine that also includes being sequentially connected with, edge polisher, automatic washer-drier, printer, printer is connected with annealing furnace, annealing furnace is also connected with converter, thermocouple, blower fan respectively, and blower fan is connected with motor, and motor is connected with converter, the converter being connected with annealing furnace is connected with temperature controller, and this temperature controller connects thermocouple.
Also include homogeneous furnace, in the air channel of homogeneous furnace, heating element heater is set.
The heating furnace of annealing furnace sets upper and lower two temperature-controlled areas, and a thermocouple, cut-in temperature instrument for automatic control are respectively installed in each temperature controlled region, utilizes the difference that degeneration factor passes through to control upper and lower temperature to be automatically adjusted temperature.
Converter includes commutator, inverter.
Beneficial effects of the present invention: the invention provides a set of automatic production device, saves energy, controls the uniformity of toughening process, it is effectively ensured the uniformity of heating, cooling, significantly relatively low self-destruction rate, also reduces labour force, is effectively increased the benefit of Factory Building.
(4) accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Fig. 1 is the firing rate relation curve a with the time of glass;
Fig. 2 is the firing rate relation curve b with the time of glass;
Fig. 3 controls block chart for heating in-furnace temperature;
Fig. 4 is the temper grade graph of a relation with blast and nozzle and glasses interval;
Fig. 5 is the wind speed graph of a relation with nozzle Yu glasses interval;
Fig. 6 is the cage electromotor control circuit figure with the time relay;
Fig. 7 is the cage electromotor control circuit figure with converter;
Fig. 8 is the structural representation of the present invention;
In figure, 1 cutting machine, 2 edge polishers, 3 automatic washer-driers, 4 printer, 5 annealing furnaces, 6 blower fans, 7 motor, 8 converters, 9 thermocouples, 10 temperature controllers.
(5) detailed description of the invention
Accompanying drawing is a kind of specific embodiment of the present invention. This embodiment includes annealing furnace 5, the cutting machine 1 that also includes being sequentially connected with, edge polisher 2, automatic washer-drier 3, printer 4, printer 4 is connected with annealing furnace 5, annealing furnace 5 is also connected with converter 8, thermocouple 9, blower fan 6 respectively, blower fan 6 is connected with motor 7, motor 7 is connected with converter 8, and the converter 8 being connected with annealing furnace 5 is connected with temperature controller 10, and this temperature controller 10 connects thermocouple 9. The heating furnace of annealing furnace 5 sets upper and lower two temperature-controlled areas, and a thermocouple 9, cut-in temperature instrument for automatic control are respectively installed in each temperature controlled region, utilizes the difference that degeneration factor passes through to control upper and lower temperature to be automatically adjusted temperature. Converter includes commutator, inverter.
Safety glass production technology:
(1) selection of former sheet glass: first, we to select the excellent glass of quality as former sheet glass, and the supplier that this factory can be good with one or two glass quality for a long time sets up cooperation, to facilitate the demand of manufacturer.
(2) cutting: being cut by template according to the size of required product, different drills should be selected to cut the glass of different size different-thickness, wherein edge to be stayed with suitable distance for breaking limit.
(3) breaking limit: get rid of the glass after cutting, in this process, staff to put on protective gloves.
(4) edging: rinse edging place with clear water while edging, glass can be made to dispel the heat on the one hand, it is to avoid to make glass deform because of overheated uneven; The effect of lubrication can be played on the other hand, make edge easily grind and more smooth. The former sheet glass of different models adopts different edge polishers 2, according to specific requirement, it is possible to be processed by shot blasting, improves edge transparency.
(5) boring: according to the requirement of finished product and in order to prevent the self-destruction of later stage glass, it is possible to suitably glass is holed.
(6) cleaning-drying: cleansing medium used is clear water, recycles, within two days one, changes, avoiding because long-time recycling causes drainage screen to block, clearing glass does not wash clean, and quality is not good, so to remove residual powder in time, the glass after cleaning with and automatically dry, need wear gloves during bottom sheet.
(7) printing is dry: according to customer requirement, at Glass base, the glass silk screen that there is a need to stamp is stamped corresponding pattern. Want to improve speed of production, expand the scale of production, it is possible to adopt a set of automatic steel process, cutting process is selected Auto Glass-Cutter 1, vector interpolation mode and polar coordinate interpolation mode during glass-cutting, can be adopted. By this method can edging again, reduce operating procedure. According to external comparatively ripe actuating device, adopt horizontal roller formula glass toughening production line, either directly through roller-way, glass sent into JY glass cleaning machine, it is ensured that glass cleaning is clean, reduces the self-destruction rate of glass, improves product quality.
(8) tempering: glass enters heating furnace through clean roller-way, is carried out tempering, and the quality of safety glass finished product depends primarily on this step of tempering.
(9) cooling, product inspection, packaging warehouse-in.
Research to toughening process
1. hot-working
The normal homogeneous heating of safety glass is completed jointly by heat time heating time and heating-up temperature. The heating-up temperature of safety glass must be suitable for, if temperature is too high, then the surface quality of glass is bad. Temperature is too low, then forming of glass poor quality after tempering. Therefore the principle that tempering temperature sets is: reduce temperature when ensureing shaping and tempering quality as far as possible. The optical property excellent to ensure glass. Heat time heating time is short, and glass is heated uneven, and tempering glass when blowing chilling wind easily splits or broken. Heat time heating time is long, then glass swings too of a specified duration in stove on ceramic roller, the quality of fragile glass surface. By the relation curve of the firing rate of glass Yu time, Fig. 1,2 it can be seen that the principle of safety glass heat time heating time is: when guaranteeing that glass is heated evenly, general by (40��50) second/MM(thickness of glass) set heat time heating time.
After deliberation it can be seen that thin glass needs higher furnace temperature:
< 4mm furnace temperature is 705-715 DEG C to thin thickness of glass;
Thin thickness of glass 4-10mm furnace temperature is 705-710 DEG C;
Thin thickness of glass 12mm furnace temperature is 690-695 DEG C;
Thin thickness of glass 15mm furnace temperature is 680-685 DEG C;
Thin thickness of glass 19mm furnace temperature is 670-675 DEG C.
According to practical situation, the control of annealing furnace 5 temperature is carried out following improvement, reduces self-destruction rate, improve yield rate.
The tempering heating period in Jing Ming safety glass factory, known by observation, the tempering heating period, the toughening degree of glass is to get off to determine in the range estimation of workman, although it is so that the requirement of apparatus is low, but it is understood that the quality of safety glass end product quality depends mainly on the tempering stage, the tempering temperature of glass can not be controlled well with range estimation, glass tempering can be made uneven, may result in glass self-explosion after coming out of the stove to improve, affect the quality of glass, reduce yield rate, so heating furnace is set upper and lower two temperature-controlled areas by suggestion, a thermocouple 9 is respectively installed in each temperature controlled region, cut-in temperature instrument for automatic control, the difference that degeneration factor passes through to control upper and lower temperature is utilized to be automatically adjusted temperature, stabilize it on certain value, this device is possible not only to be automatically adjusted in-furnace temperature, in-furnace temperature is made to maintain comparatively uniform state, and temperature can be directly read. additionally, a converter 8 is accessed at annealing furnace place, temperature can better be controlled at required turnover furnace temperature by converter 8 when glass passes in and out stove, it is to avoid too high or too low for temperature and waste the energy and this problem of time during Artificial Control, and can reduce self-destruction rate. so can be substantially reduced productive labor intensity.
Wherein, temperature controller 10 specific works principle is as follows:
By thermocouple 9, furnace temperature being transformed into corresponding thermoelectrical potential signal and send into temperature controller, compare with the set-point pre-entering temperature controller, the difference drawn can be input to converter 8 by the 4-20mA current forms of continuous rule. The adjustment bound of converter 8 is set as 5-50HZ, the 4-20mA of corresponding current respectively, when being subject to when affecting of some external environment condition, the unlatching such as fire door makes in-furnace temperature reduce, now can by the comparison operation of temperature controller 10, the conveying electric current making converter 8 increases, and namely output frequency increases, and causes resistance wire to be heated, and then make in-furnace temperature raise, so, namely in-furnace temperature deviation is eliminated, thus reaching steady statue. Temperature in its stove is shown by the thermocouple on heating furnace, can read immediately. Can also be judged in stove the series of problems such as heating element heater whether damage by the temperature of its display, it is concrete such as Fig. 3 that it controls block chart.
The specific works principle of converter 8 is as follows:
The voltage 220V of domestic regulation, the unidirectional current of about 310V is obtained after the rectified filtering of electric current of frequency 50Hz, this unidirectional current is after inversion, it is possible to obtain controlling the variable-frequency power sources of compressor operation, and the mains frequency of 50 hertz just can be changed into 30-130 hertz by this. The converter 8 change according to in-furnace temperature, regulates and heats speed. After reaching design temperature, converter 8 changes power low-speed running, to regulate the trickle loss of temperature, maintains temperature constant state. When temperature needs to change as glass enters the temperature of annealing furnace 5 lower than tempering temperature, when converter 8 reaches temperature required according to setting value will not as Artificial Control time temperature grasp bad, temperature is made to reduce too much, need to wait it to be heated to temperature required glass and just can enter annealing furnace 5, both wasted the energy, lost time again. This problem is then avoided in the use of converter 8 well.
Improvement to heating furnace:
In heating process, except to control heating power well, in-furnace temperature will being made to maintain outside uniformly, electrical heating wire also should according to suitable close structure arrangement in heating furnace, more employing normal radiation stove heater strip in the selection of heater strip, such low price and stability are better. Furthermore it is also possible to arrange forced convertion in stove, improve air velocity, temperature, change the flow regime of air, or increase insulation board heats indirectly, improves the uniformity of heating. And, the heat-insulation layer material of annealing furnace 5 is also a problem can not ignore, heat-insulation layer can not be damaged, otherwise can produce production safety problem, the material that heat-insulating property is good should be used as much as possible when cost allows, so can be effectively reduced thermal loss, make in-furnace temperature more stable. Annealing furnace 5 outsourcing Q235 steel plate, thickness 3.5-4.5cm, it is preferable that 4cm, liner aluminium silicate thickness 4.5-5.5cm, it is preferable that 5cm.
By glass according to the different rapid punch formings of mould after heating, then quickly enter blower fan 6 to cool down, blower fan 6 to swing back and forth with suitable speed, such glass could uniformly cool down, the tuyere that must avoid glass faces toward a position of glass and dries always, otherwise can make to produce obvious wind speckle on glass. For tuyere, it is possible to suitably reducing its ejiction opening diameter, at blast, when air quantity is identical, tuyere squit hole diameter is more little, then the air velocity sprayed is more big. But aperture can not be too small, if too small, air stream can be affected and be ejected into the area coverage of glass surface. It addition, the distance of the size of blast and air grid is the determiner of glass particle degree size, in order to obtain higher heat exchanger effectiveness, the distance between nozzle and glass surface to shorten (Fig. 4,5 shown in). Distance is more little, blast is more big, wind speed is more big, but in actual production, distance can not be too big, be typically between 10 20mm adjustable, otherwise it may happen that air-flow overlapping phenomenon, affecting air-flow being uniformly distributed at glass surface, the every 5 square centimeters of granularity numbers included of general standard safety glass are 45. By suitable blast, the blower fan swung back and forth makes glass uniformly cool down rapidly, takes around the cool time of 20s.
Cooling wind pressure is one of of paramount importance technological parameter in cooling technological parameter, the cooling degree of glass is produced directly impact with cooling effect by cooling wind pressure, the thickness setting foundation glass on the one hand of cooling wind pressure, glass is more thin, the requirement of cooling wind pressure is more high, and cooling wind pressure arranged the rising that conference causes the self-destruction probability of glass; On the other hand referring also to the perforate fluting state of the color of glass, glass. Glass is when air-cooled, and the slight impact of air grid and glass can cause the broken of glass. At this moment we need to check whether air grid misplaces, and notices whether sight glass has the phenomenon beated. The adjustment of cooling wind pressure can be controlled on computers, but the blast of the blast of upper air grid and lower air grid regulates it is generally required to the deflector of upper and lower wind path center is adjusted, deflector is positioned at the center of upper and lower wind path, it is used for the size regulating air grid blast with lower air grid blast, to the blast that rise is the lower air grid of blast reduction strengthening upper air grid, it is strengthen the pressure of lower air grid and reduce the blast of upper air grid to downward, but this way is inconvenient.
So air-cooled process is partially improved:
Owing to glass is when quenching district chilling, the backflow of glass plate upper air stream blows to glass surface from tangent plane, this adds increased the heat transmission of glass plate edge, causes edge quickly to cool down and strong contraction, cause that safety glass fragment size is uneven. In order to overcome above shortcoming, the forced air cooled tube system of upper and lower can make different shapes, so that glass plate upper and lower surface bears identical heat exchange and identical gas shock.
The blower fan of existing producer generally remains same rotation speed operation, namely motor 7 is all the time with certain power work, under the control of time relay KT setting value, it is automatically stopped after air-cooled 20s, in the process so with equal power work, for there being the machine component of different air-cooled requirement, there are some air quantity to be lost, that is adds additional the consumption power of motor. It is so very not energy-conservation. Wherein the control circuit schematic diagram of this factory's motor is illustrated in fig. 6 shown below.
For this figure, its work process is: first, manually presses dynamic circuit connector switch SB2, now circuit ON, KM relay coil has electric current, adhesive KM, switch KM circuit is connected, now trip switch SB2, now the time relay is started working, and motor 7 starts running with certain rotating speed, under time relay setting value effect, after the time arrives 20 seconds, circuit disconnects automatically, and motor stops.
But it is understood that, converter 8 can control the running power of motor 7, then thus idea, in order to overcome disadvantage mentioned above, converter 8 can be installed to control the rotating speed of motor 7, make it can converting operation, so when just working, the rotating speed of motor can be lower, reach air-cooled first 3 seconds, motor 7 is issued to the rotating speed of needs at the automatic frequency-conversion of converter 8, to adapt to air-cooled requirement, what thus can the glass of different-thickness be carried out in various degree is air-cooled, additionally, under the control of time relay KT setting value, after 20 seconds, air-cooled complete, motor 7 stops, while achieving the goal, so greatly reduce energy consumption. as shown in Figure 7.
For this figure, its work process is: first, manually presses dynamic circuit connector switch SB2, now circuit ON, KM relay coil has electric current, adhesive KM, switch KM circuit is connected, now trip switch SB2, and now the time relay is started working, motor 7, under the setting value deviation with in-furnace temperature, under the effect of converter 8, starts running with different rotating speeds, under time relay setting value effect, after the time arrives 20 seconds, circuit disconnects automatically, and motor stops.
2. it is crucial that heat and cooling procedure in tempering. If controlling bad temperature and air quantity, it is easy to cause that inside glass stress distribution is uneven and cause self-destruction. Therefore tempering stress should control in suitable scope, so both can ensure that safety glass debris particle degree meets relevant requirement, also be avoided that the heavily stressed unnecessary self-destruction risk caused.
Outside for former sheet glass, the quality of the finished product that our naked eyes can observe is easier to find out, then select high quality glass, the self-destruction probability herein caused can be easier to get rid of, but wherein the existence of inside glass nickel sulfide is not easy to get rid of, because inherently there is nickel sulfide what former sheet glass manufactured, we are impossible completely excluded by it, this problem is solved however, it is possible to processed by homogenizing.
The operation principle that homogenizing processes is again to be heated by safety glass, temperature is made to reach about 290 DEG C and carry out the insulation of certain time, nickel sulfide is made to complete the transformation of crystalline phase before glass dispatches from the factory, allow it may happen that the glass revealed crushes in advance in factory, avoid crushing in productive life in the future, it is prevented that cause personal injury. Homogeneous furnace must adopt the mode that forced convertion is heated to heat glass. Convective Heating leans on hot air glass, and heating element heater is arranged in air channel, and air is heated in air channel, subsequently in stove. This mode of heating can avoid the direct radiation heating glass of element, causes glass hot-spot. Result of study shows, transformation rate when 280 DEG C is 100 times when 250 DEG C, it is therefore necessary to guaranteeing the temperature schedule that each piece of glass experience in stove is same, otherwise, some glass temperature is too high on the one hand, can cause the reverse phase transformation of nickel sulfide; And the glass that temperature is low on the other hand is inadequate because of temperature retention time so that nickel sulfide phase transformation is incomplete, and two kinds of situations all can cause that invalid homogenizing processes.
When homogenizing processes, because between the sheet glass in homogeneous furnace being the convection channel of hot-air, therefore the stacked configuration of glass is extremely important for the quality that homogenizing processes. First airflow direction should be complied with in the direction of banking up of glass, can not hinder air stream stock. Secondly, the space between sheet glass and sheet must be sufficiently large, and separator can not block air duct, at least must have the gap of 20mm between sheet glass, can not directly contact between sheet. For big sheet glass, glass is easy to cause excessive temperature differentials to crush because being mutually close to.
In heating furnace, add converter 8 maintain the uniformity of in-furnace temperature, but it is noted that enter stove speed and should suitably slow down with heating reciprocating speed, to guarantee that converter 8 does not transship because electric current is excessive, reduce reciprocal time and reduce the purpose of quick-fried stove probability.
The reading of thermocouple 9 must be accurate in the scope that error allows, otherwise once temperature signal input is inaccurate, it will affect whole toughening process, and the key of glass tempering is the control of temperature, therefore to make regular check on its whether normal operation, be periodically subject to maintenance. In addition, machine such as conveyer belt etc. required in tempering flow process is required for being periodically subject to maintenance overhaul and maintenance according to the rules, improves yield rate, reduces rate of breakdown, increases its service life, reduces cost.
Air-cooled mainly by blower fan of glass air-cooled, it is crucial that the control of air pressure air flow in air-cooled process, air quantity can by experiment or empirical equation calculate its true scope, it is ensured that have higher yield rate.
Wherein, �� atmospheric density (kg/m3);
The pressure loss factor of �� jet expansion;
V flow velocity (m/s);
G acceleration of gravity;
H air quantity
N nozzle sum;
S nozzle cross-sectional area (m2)
Drainage screen was the instrument of air filtering, and fan operation is of a specified duration, and drainage screen has a lot of dust, adding blowing resistance, actual blowing air quantity, lower than required value, reduces yield rate, therefore we want the dust on periodic cleaning drainage screen, and glass just can be made to be dried better.
After air grid uses for a long time, its air grid pore volume is easily by foreign matters from being blocked, because after the glass of our tempering is come out of the stove, having broken glass, its minimum fragment can easily fall into blowhole, when causing lower stove glass to cool down, blowhole blocks, drying uneven, glass can not normally be cooled down, and this results in glass and breaks because inhomogeneous cooling is even. So tuyere also to be carried out periodic cleaning by us, to such an extent as to do not affect cold air blast velocity so that it is do not affect the air-cooled of glass. Properly increasing air grid height makes blower fan dry evenly, reduces self-destruction probability. It addition, don't fail to guarantee that when cooling down it normally swings, ten thousand can not stop, in order to avoid being formed with the safety glass that flaw is even revealed.
Claims (9)
1. the preparation method of a safety glass, it is characterised in that: comprise the following steps:
(1) selection of former sheet glass: select the excellent glass of quality as former sheet glass;
(2) cutting: being cut by template according to the size of required product, different drills should be selected to cut the glass of different size different-thickness, wherein edge to be stayed with suitable distance for breaking limit;
(3) limit is broken: get rid of the glass after cutting;
(4) edging: rinse edging place with clear water while edging;
(5) boring: according to the requirement of finished product and in order to prevent the self-destruction of later stage glass, suitably glass is holed;
(6) cleaning-drying: cleansing medium used is clear water, recycle, within two days one, change, the glass after cleaning with and automatically dry;
(7) printing is dry: according to customer requirement, at Glass base, the glass silk screen that there is a need to stamp is stamped corresponding pattern;
(8) tempering: glass enters heating furnace through clean roller-way, is carried out tempering;
(9) cooling, product inspection, packaging warehouse-in.
2. the preparation method of safety glass according to claim 1, it is characterised in that: in step (8), safety glass heat time heating time, when guaranteeing that glass is heated evenly, by (40��50) second/mm(thickness of glass) set heat time heating time.
3. the preparation method of safety glass according to claim 1, it is characterised in that: in step (9), the distance between nozzle and glass surface is between 10 20mm, and cool time is the 15-25 second.
4. the preparation method of safety glass according to claim 1, it is characterised in that: glass is when quenching district chilling, and glass plate upper and lower surface bears identical heat exchange and identical gas shock.
5. the preparation method of safety glass according to claim 1, it is characterized in that: also include homogenizing and process, safety glass is heated again, make temperature reach 277-293 DEG C to be incubated, nickel sulfide is made to complete the transformation of crystalline phase before glass dispatches from the factory, allowing it may happen that the glass revealed crushes in advance in factory, when homogenizing processes, between the sheet glass in homogeneous furnace, space has at least 20mm.
6. a glass tempering system according to claim 1, including annealing furnace, it is characterized in that: the cutting machine that also includes being sequentially connected with, edge polisher, automatic washer-drier, printer, printer is connected with annealing furnace, annealing furnace is also connected with converter, thermocouple, blower fan respectively, and blower fan is connected with motor, and motor is connected with converter, the converter being connected with annealing furnace is connected with temperature controller, and this temperature controller connects thermocouple.
7. glass tempering system according to claim 6, it is characterized in that: the heating furnace of annealing furnace sets upper and lower two temperature-controlled areas, a thermocouple, cut-in temperature instrument for automatic control are respectively installed in each temperature controlled region, utilize the difference that degeneration factor passes through to control upper and lower temperature to be automatically adjusted temperature.
8. glass tempering system according to claim 6, it is characterised in that: also include homogeneous furnace, in the air channel of homogeneous furnace, heating element heater is set.
9. the glass tempering system according to claim 7 or 8, it is characterised in that: converter includes commutator, inverter.
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| CN201510983575.4A CN105621871A (en) | 2015-12-24 | 2015-12-24 | Glass toughening system and preparation method of toughened glass |
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| CN201510983575.4A CN105621871A (en) | 2015-12-24 | 2015-12-24 | Glass toughening system and preparation method of toughened glass |
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| CN (1) | CN105621871A (en) |
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| CN106830656A (en) * | 2016-12-17 | 2017-06-13 | 湖北雄华科技有限公司 | A kind of manufacture method based on 5mm safety glass |
| CN107179755A (en) * | 2017-04-28 | 2017-09-19 | 中建材（宜兴）新能源有限公司 | A kind of photovoltaic glass deep processing annealing furnace production control system in parallel |
| CN108218209A (en) * | 2018-01-29 | 2018-06-29 | 东莞市茂裕工业窑炉有限公司 | A kind of electric heating continuous glass tableware decoration firing and annealing furnace |
| CN108297526A (en) * | 2018-01-30 | 2018-07-20 | 四川雄港玻璃有限公司 | The production technology of ice calving glass |
| CN108328913A (en) * | 2018-03-26 | 2018-07-27 | 信义玻璃工程（东莞）有限公司 | Toughened grass homogenizing processing method and tempered glass |
| CN108585458A (en) * | 2018-07-24 | 2018-09-28 | 淮北市长兴安全节能钢化玻璃有限公司 | A kind of toughened glass production line and production technology |
| CN108975668A (en) * | 2018-10-30 | 2018-12-11 | 章慧妍 | A kind of building glass homogeneous furnace |
| WO2019029180A1 (en) * | 2017-08-07 | 2019-02-14 | 洛阳兰迪玻璃机器股份有限公司 | Method for controlling discharging of glass plate in glass plate tempering technology process |
| CN110577352A (en) * | 2019-09-12 | 2019-12-17 | 张建民 | Hot bending glass double-side indentation dislocation processing and self-explosion detection device |
| CN111892284A (en) * | 2020-06-16 | 2020-11-06 | 扬州恒泰玻璃有限公司 | Arc-shaped fireproof tempered glass treatment process |
| CN111977949A (en) * | 2020-07-31 | 2020-11-24 | 黑龙江工业学院 | Fireproof glass tempering furnace |
| CN112696873A (en) * | 2020-12-03 | 2021-04-23 | 安徽方达药械股份有限公司 | Glass tube progressive cooling device for thermometer production |
| CN114940579A (en) * | 2021-06-24 | 2022-08-26 | 河北明尚德玻璃科技股份有限公司 | Production process of high borosilicate glass 2.0 and application of high borosilicate glass 2.0 |
| CN115849692A (en) * | 2022-12-13 | 2023-03-28 | 常州英雅利照明电器有限公司 | Tempering temperature detection method for production of lamp tempered glass |
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| CN106830656A (en) * | 2016-12-17 | 2017-06-13 | 湖北雄华科技有限公司 | A kind of manufacture method based on 5mm safety glass |
| CN107179755B (en) * | 2017-04-28 | 2018-11-13 | 中建材（宜兴）新能源有限公司 | A kind of photovoltaic glass deep processing annealing furnace parallel connection production control system |
| CN107179755A (en) * | 2017-04-28 | 2017-09-19 | 中建材（宜兴）新能源有限公司 | A kind of photovoltaic glass deep processing annealing furnace production control system in parallel |
| EP3657295A4 (en) * | 2017-08-07 | 2020-07-22 | Luoyang Landglass Technology Co., Ltd. | Method for controlling discharging of glass plate in glass plate tempering technology process |
| US11667556B2 (en) * | 2017-08-07 | 2023-06-06 | Luoyang Landglass Technology Co., Ltd. | Method for controlling discharging of glass plate in glass plate tempering technology process |
| AU2018312663B2 (en) * | 2017-08-07 | 2021-04-08 | Luoyang Landglass Technology Co., Ltd. | Method for controlling discharging of glass plate in glass plate tempering technology process |
| KR102280818B1 (en) | 2017-08-07 | 2021-07-23 | 루오양 랜드글라스 테크놀로지 컴퍼니 리미티드 | How to control the discharging of the glass plate in the glass plate strengthening process |
| US20200165154A1 (en) * | 2017-08-07 | 2020-05-28 | Luoyang Landglass Technology Co., Ltd. | Method for controlling discharging of glass plate in glass plate tempering technology process |
| WO2019029180A1 (en) * | 2017-08-07 | 2019-02-14 | 洛阳兰迪玻璃机器股份有限公司 | Method for controlling discharging of glass plate in glass plate tempering technology process |
| KR20200038505A (en) * | 2017-08-07 | 2020-04-13 | 루오양 랜드글라스 테크놀로지 컴퍼니 리미티드 | Method for controlling discharging of glass plate in glass plate strengthening process |
| CN108218209A (en) * | 2018-01-29 | 2018-06-29 | 东莞市茂裕工业窑炉有限公司 | A kind of electric heating continuous glass tableware decoration firing and annealing furnace |
| CN108297526A (en) * | 2018-01-30 | 2018-07-20 | 四川雄港玻璃有限公司 | The production technology of ice calving glass |
| CN108328913A (en) * | 2018-03-26 | 2018-07-27 | 信义玻璃工程（东莞）有限公司 | Toughened grass homogenizing processing method and tempered glass |
| CN108328913B (en) * | 2018-03-26 | 2020-12-15 | 信义玻璃工程（东莞）有限公司 | Toughened glass homogenizing treatment method and toughened glass |
| CN108585458A (en) * | 2018-07-24 | 2018-09-28 | 淮北市长兴安全节能钢化玻璃有限公司 | A kind of toughened glass production line and production technology |
| CN108975668A (en) * | 2018-10-30 | 2018-12-11 | 章慧妍 | A kind of building glass homogeneous furnace |
| CN108975668B (en) * | 2018-10-30 | 2021-05-14 | 凯里市凯荣玻璃有限公司 | Building glass homogenizing furnace |
| CN110577352A (en) * | 2019-09-12 | 2019-12-17 | 张建民 | Hot bending glass double-side indentation dislocation processing and self-explosion detection device |
| CN110577352B (en) * | 2019-09-12 | 2022-06-10 | 永州市湘源玻璃制品有限公司 | Hot bending glass double-edge indentation dislocation processing and self-explosion detection device |
| CN111892284A (en) * | 2020-06-16 | 2020-11-06 | 扬州恒泰玻璃有限公司 | Arc-shaped fireproof tempered glass treatment process |
| CN111977949A (en) * | 2020-07-31 | 2020-11-24 | 黑龙江工业学院 | Fireproof glass tempering furnace |
| CN112696873A (en) * | 2020-12-03 | 2021-04-23 | 安徽方达药械股份有限公司 | Glass tube progressive cooling device for thermometer production |
| CN114940579A (en) * | 2021-06-24 | 2022-08-26 | 河北明尚德玻璃科技股份有限公司 | Production process of high borosilicate glass 2.0 and application of high borosilicate glass 2.0 |
| CN115849692A (en) * | 2022-12-13 | 2023-03-28 | 常州英雅利照明电器有限公司 | Tempering temperature detection method for production of lamp tempered glass |
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Application publication date: 20160601 |