CN117285238A - Method for online hot state replacement of runner lip bricks of float ultrathin electronic glass - Google Patents
Method for online hot state replacement of runner lip bricks of float ultrathin electronic glass Download PDFInfo
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- CN117285238A CN117285238A CN202311239735.5A CN202311239735A CN117285238A CN 117285238 A CN117285238 A CN 117285238A CN 202311239735 A CN202311239735 A CN 202311239735A CN 117285238 A CN117285238 A CN 117285238A
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- lip
- brick
- bricks
- flashboard
- lip brick
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- 239000011449 brick Substances 0.000 title claims abstract description 223
- 239000011521 glass Substances 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 30
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 53
- 235000015170 shellfish Nutrition 0.000 claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 238000004140 cleaning Methods 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims abstract description 4
- 239000000498 cooling water Substances 0.000 claims description 10
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 9
- 239000000835 fiber Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- 238000005485 electric heating Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 230000033764 rhythmic process Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000006060 molten glass Substances 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims description 2
- 238000004513 sizing Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 238000000137 annealing Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 101150051314 tin-10 gene Proteins 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 239000010431 corundum Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000005329 float glass Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011468 face brick Substances 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 238000007496 glass forming Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
- C03B18/16—Construction of the float tank; Use of material for the float tank; Coating or protection of the tank wall
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
Abstract
The utility model discloses a method for replacing a runner lip brick of float ultrathin electronic glass in an online thermal state, and belongs to the technical field of lip brick replacement. The technical proposal is as follows: the No. 1 flashboard is dropped to smash heads; lifting the 0 shellfish upwards, and translating the whole lip brick to the direction of the tin bath; lifting the 2# flashboard, and removing the lifting device of the 2# flashboard; cleaning residual glass liquid from the front lintel brick of the tin bath to the tongue of the lip brick; hanging out 0 shells, and hanging the old lip bricks; removing glass adhered to the bottom and the side wall of the flow channel and at the joint of the flow channel and the lip brick, measuring the distance between the two inner walls of the flow channel, and determining the center line of the flow channel; hoisting a new lip brick; hoisting 0 shellfish; heating the lip brick; restoring 0 shellfish, installing lifting device of 2# flashboard, pressing strip brick and covering seam brick. The method can systematically perform hot replacement of the lip brick, so that the replacement process is safer and more stable, the loss is minimized, and the quality of the finished product of the production line is powerfully ensured.
Description
Technical Field
The utility model relates to the technical field of lip brick replacement, in particular to a method for online hot state replacement of a runner lip brick of float ultrathin electronic glass.
Background
In the technology of producing flat float glass, a melting furnace, a tin bath and an annealing furnace are three main thermal equipment. The runner is a connecting channel of a melting furnace and a tin bath and consists of a launder and a lip brick, and the whole runner is of an inverted splayed structure. The launder consists of a steel structure, a high-aluminum light heat-insulating brick, a clay brick and an alpha beta electro-fused corundum brick, and the lip brick consists of a lip brick bracket, a mullite pad brick, an alpha beta shoulder brick, an alpha beta face brick and an alpha beta tongue brick. The high-temperature glass liquid in the melting furnace continuously flows into the tin bath through the flow channel, floats on the high-temperature molten tin liquid, is flattened and polished, and enters the annealing furnace for annealing through the upper transition roller of the tin bath and the cold end cutting and packaging through the edge roller and the main transmission pull Bao Jihou, wherein the plate glass with qualified cooling and shaping thickness.
The common glass and the ultrathin electronic glass have great difference in the control of production parameters due to different quality requirements. The temperature of the glass liquid flowing through the lip brick of the common glass is about 1100 ℃, and the temperature of the ultrathin electronic glass is about 1290 ℃. As the lip brick is directly impacted by high-temperature glass liquid flow and is positioned at the joint of gas phase, liquid phase and solid phase, the lip brick is easily eroded by glass liquid, and once the lip brick is eroded, defects such as a line channel, glass ribs, bubbles and the like on the surface of the glass plate can be caused even if the damage is very small, so that the production quality of the glass is seriously affected. Meanwhile, the ultra-thin electronic glass has much more severe requirements on quality than the common glass, so that the alpha beta corundum lip brick can be generally used for 7-8 years in the common float glass production line and can be basically replaced when the production line is cold repaired, and a cold state replacement method is generally used; the production line of the ultra-thin glass can only be used for 3-4 years, and the production line can not be replaced when cold repair is performed in order to ensure the quality of the product, so that a hot replacement method is needed to reduce the loss of the ultra-thin glass.
The lip brick is a custom product, the manufacturing period is about 1-3 months, and the price is 20-30 ten thousand, so that in order to control the cost, the common ultrathin glass production line only has one standby lip brick. If the spare lip tile is damaged during the replacement of the lip tile, the spare lip tile must be re-ordered, which can result in a significant loss of quality of the glass product during the lip tile manufacturing cycle.
The Chinese patent No. 216945915U discloses a hanging beam device for replacing a lip brick bracket, which comprises a hanging beam assembly and a supporting assembly for supporting the hanging beam assembly, wherein the hanging beam assembly comprises a beam structure, a longitudinal beam structure and a hanging beam structure, the beam structure comprises two parallel main beams and sliding rails uniformly arranged on the main beams, the longitudinal beam structure comprises parallel longitudinal beams, and the longitudinal beams slide on the sliding rails; the hanging beam structure comprises four hanging beams arranged at two ends of the longitudinal beam, fixed lifting lugs with pulleys are arranged at the lower parts of the hanging beams, and the pulleys are connected through stranded wires. The hanging beam device for replacing the lip brick bracket is suitable for a calendaring glass forming process, can only replace the lip brick bracket, and cannot solve the problems.
In view of the above, there is a need for a mature, efficient, easy to implement, and standardized thermal replacement method for lip blocks of ultra-thin glass production lines.
Disclosure of Invention
The utility model aims to solve the technical problems that: the method for replacing the lip bricks of the flow channel on line in a thermal state by the float ultrathin electronic glass overcomes the defects of the prior art, and ensures that the replacement process is safer, more stable and the loss is minimized by systematically replacing the lip bricks in a thermal state, thereby forcefully ensuring the quality of finished products of the production line.
The technical scheme of the utility model is as follows:
the method for replacing the runner lip brick of the float ultrathin electronic glass in an online thermal state comprises the following steps of:
s1: the No. 1 flashboard is dropped to smash heads; dismantling an electric heating rod of 0 shellfish after smashing a head, taking out a nitrogen bag at an inlet of a tin bath, dismantling a layering brick and a cover joint brick between a 1# flashboard and a 2# flashboard, pushing a cover plate brick between the 1# flashboard and the 2# flashboard and a shoulder brick filled below the cover plate brick to the direction of the 1# flashboard, and then sealing and insulating a gap between the 1# flashboard and the 2# flashboard by using an insulating blanket to reduce heat loss;
s2: lifting the 0 shellfish upwards through a 0 shellfish pull rod to ensure that the distance between the upper end surface of the lip brick bracket and the 0 shellfish is more than 500mm, removing connecting bolts and welding spots between the lip brick bracket and a launder, translating the whole lip brick towards the direction of a tin bath, and additionally installing sizing blocks between the lip brick bracket and a tin bath edge brick to protect splayed bricks and backing bricks from damage;
s3: lifting the 2# flashboard, removing the lifting device of the 2# flashboard, and sealing and preserving heat at the original position of the 2# flashboard of the convection tank by using a heat preservation blanket; the hung 2# flashboard is covered by a heat insulation blanket, so that the explosion of the flashboard during quenching and quenching is tightly prevented;
s4: cleaning residual glass liquid from a front lintel brick of the tin bath to a tongue part of the lip brick from an observation window at one side of the tin bath;
s5: hanging 0 shells, starting to make the whole lifting preparation work of the old lip bricks, checking whether the old lip bricks are adhered to splayed bricks and backing bricks at the inlet of the tin bath (if so, using tools such as hooks and the like to disconnect the old lip bricks), lifting the old lip bricks after the old lip bricks are determined to be not adhered, checking whether the splayed bricks and the backing bricks at the inlet of the tin bath need to be replaced, protecting and reusing the splayed bricks and the backing bricks without replacement, and keeping the end surfaces of the connecting positions of the launders and the lip bricks warm;
s6: the glass adhered to the bottom and the side wall of the launder and the joint of the launder and the lip brick is removed, so that the contact surface of the launder and the new lip brick is ensured to have no concave-convex phenomenon, otherwise, the installation quality of the new lip brick is influenced; measuring the distance between the two inner walls of the launder after cleaning the glass, and determining the centre line of the launder;
s7: hoisting a new lip brick, leveling the lip brick longitudinally and transversely, and adjusting and regulating a gap between the lip brick and the launder to be uniform up and down; the joint of the lip brick and the launder is not higher than the launder, the center line of the lip brick is consistent with the center line of the launder, a frame level gauge is used for measuring whether the lip brick is level, and the lip brick is tightly attached to the launder and fixed together by a connecting bolt after being in place;
s8: hoisting the 0 shellfish to enable the lower end surface of the 0 shellfish to be 5-10mm higher than the lip brick bracket;
s9: heating the lip brick by hot air flow in the tin bath, and then electrically heating the lip brick to gradually heat the lip brick; gradually reducing the height of 0 shellfish according to the temperature rise condition to control the temperature rise rhythm; checking whether the lip brick is abnormal or not once per hour in the heating process;
s10: restoring the 0 shellfish, installing the lifting device of the 2# flashboard, the pressing strip brick and the cover seam brick, sealing the periphery of the 0 shellfish, the launder and the lip brick, and preparing for the primer.
Preferably, in step S1, before the 1# flashboard is dropped, the hydrogen ratio in the shielding gas at the front end of the tin bath is raised to more than 10%.
Preferably, in step S4, when cleaning glass, a small part of molten glass is remained to cover the exposed molten tin level, so as to prevent the molten tin from being excessively oxidized and polluted.
Preferably, in step S4, a heat insulation blanket is arranged between the tongue of the lip brick and the front lintel brick of the tin bath, and a supporting piece is arranged below the heat insulation blanket.
Preferably, the support member employs a cooling water pipe.
Preferably, in step S8, after hoisting the 0-piece, thermocouples are respectively arranged at the joint of the lip brick and the launder and the tongue of the lip brick, and the thermocouples are 5-10mm away from the surface of the lip brick so as to monitor the temperature rise condition of the lip brick in the later period.
Preferably, in step S9, when the lip brick is electrically heated, the temperature is raised to 150 ℃, then to 350 ℃, then to 720 ℃, and the temperature raising rate is sequentially increased.
Preferably, before step S1, preparation before the operation is performed: placing the lip brick near the launder one month before replacing the lip brick, heating the lip brick by the launder heat to discharge the water in the lip brick, wherein the temperature of the lip brick can basically discharge all the water in one month at 50 ℃; and after the water in the lip bricks is discharged, the lip bricks are assembled on the lip brick bracket, and whether equipment such as an electric hoist is normal or not is tested.
Preferably, the heat insulation blanket adopts an aluminum silicate fiber blanket.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model provides a method for changing the runner lip brick in an online thermal state of a system, which ensures that the thermal state lip brick changing process is safer, more stable and the loss is minimized, thereby forcefully ensuring the quality of finished products of a production line.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic view of the flow channel structure of the present utility model.
FIG. 2 is a schematic illustration of an on-line hot replacement of a runner lip block of the present utility model.
In the figure, 1, a launder; 2. a tin bath; 201. front lintel bricks; 301. a 1# flashboard; 302. 2# flashboard; 4. 0 shellfish; 5. cover plate bricks; 6. a thermal blanket; 7. lip brick; 701. a lip brick bracket; 702. a lip brick tongue; 8. a splayed area; 9. a cooling water pipe; 10. and (5) tin liquid.
Detailed Description
In order to make the technical solution of the present utility model better understood by those skilled in the art, the technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
Example 1
The method for replacing the runner lip brick of the float ultrathin electronic glass in an online thermal state of the embodiment needs to prepare before operation: the lip brick 7 is placed near the runner one month before the lip brick 7 is replaced, the lip brick 7 is heated by the heat of the runner to discharge the water in the lip brick 7, and the temperature of the lip brick 7 can discharge all the water basically in one month at 50 ℃; after the water in the lip brick 7 is discharged, the lip brick 7 is assembled on the lip brick bracket 701, and whether equipment such as an electric hoist is normal or not is tested.
The lip brick 7 is then replaced, comprising the steps of:
s1: the hydrogen ratio in the protective gas at the front end of the tin bath 2 is firstly increased to more than 10 percent, so that the oxidized tin liquid 10 is reduced back again in the replacement process. 1-2, the 1# flashboard 301 is dropped to smash heads; after the head is smashed, the electric heating rod of the 0 shellfish 4 is removed, and the nitrogen bag at the inlet of the tin bath 2 is taken out, so that the damage to the tin bath in the process of replacing the lip brick 7 is avoided, and the tin bath can be installed again after the lip brick 7 is replaced. And removing the layering bricks and the cover seam bricks between the 1# flashboard 301 and the 2# flashboard 302, pushing the cover plate bricks 5 between the 1# flashboard 301 and the 2# flashboard 302 and shoulder bricks filled below the cover plate bricks 5 to the direction of the 1# flashboard 301, sealing and insulating gaps between the 1# flashboard 301 and the 2# flashboard 302 by using an aluminum silicate fiber blanket, reducing heat loss, and simultaneously arranging an electric heating rod and a thermocouple at the position to realize temperature control at the position.
S2: the 0 shellfish 4 is lifted upwards through the 0 shellfish 4 pull rod, so that the distance between the upper end surface of the lip brick support 701 and the 0 shellfish 4 is more than 500mm, connecting bolts and welding spots between the lip brick support 701 and the launder 1 are removed, the whole lip brick 7 is translated by 30mm towards the direction of the tin bath 2 by using a crow bar, and iron pads are additionally arranged between the lip brick support 701 and the edge brick of the tin bath 2, so that the adhesion between the lip brick support 701 and the edge brick of the tin bath 2 is prevented, and the splayed brick and the backing brick are protected from being damaged.
S3: lifting the 2# flashboard 302, removing a lifting device of the 2# flashboard 302 to provide an operation space for replacing the lip brick 7, sealing and insulating the position of the original 2# flashboard 302 of the launder 1 by using an insulating blanket 6 to reduce heat loss, and simultaneously, arranging an electric heating rod and a thermocouple at the position to realize temperature control at the position; the lifted 2# flashboard 302 is covered with a heat blanket 6, which tightly prevents the explosion when the heat is suddenly released.
S4: and cleaning most of the residual glass liquid from the front beam brick 201 of the tin bath 2 to the lip brick tongue 702 from the observation window on one side of the tin bath 2, and keeping a small part of the glass liquid to cover the exposed tin liquid 10 surface so as to prevent the tin liquid 10 from being excessively oxidized and polluted. In addition, there is a large space below the front lintel brick 201 from the molten tin 10, through which air can easily enter the molten tin bath 2 causing oxidation pollution of the molten tin 10. Therefore, in order to reduce the pollution of the molten tin 10, as shown in fig. 2, an aluminum silicate fiber blanket is arranged between the lip brick tongue 702 and the front lintel brick 201, a supporting piece is arranged below the aluminum silicate fiber blanket, the supporting piece can adopt a cooling water pipe 9, cooling water is introduced into the cooling water pipe 9, on one hand, the cooling water pipe 9 can play a role in supporting the aluminum silicate fiber blanket, on the other hand, the cooling water can also cool the cooling water pipe 9, and the cooling water pipe 9 is prevented from being deformed due to heating, so that the aluminum silicate fiber blanket cannot be supported. The combination of the aluminum silicate fiber blanket and the supporting piece can ensure that the heat of the tin bath 2 keeps the splayed area 8 between the tin bath 2 and the lip brick 7, and can also utilize the protective gas in the tin bath 2 to protect the tin liquor 10 in the splayed area 8 from being oxidized. In addition, gaps, openings, etc. present in the splayed area 8 may be sealed with an aluminium silicate fibre blanket.
S5: and (3) hanging out the 0-shell 4, starting to make the whole lifting preparation work of the old lip brick 7, checking whether the old lip brick 7 is adhered to the splayed brick and the backing brick at the inlet of the tin bath 2 (if so, using tools such as hooks and the like to disconnect the old lip brick 7), lifting the old lip brick 7 after determining that the old lip brick is not adhered, checking whether the splayed brick and the backing brick at the inlet of the tin bath 2 need to be replaced, protecting the old lip brick from being used again if the old lip brick is not needed to be replaced, and keeping the end face of the joint of the launder 1 and the lip brick 7 warm.
S6: the glass adhered to the bottom and the side wall of the launder 1 and at the joint of the launder 1 and the lip brick 7 is removed, so that the contact surface of the glass and the new lip brick 7 is ensured to have no concave-convex phenomenon, otherwise, the installation quality of the new lip brick 7 is affected; after the glass is cleaned, the distance between the two inner walls of the launder 1 is measured, and the center line of the launder 1 is determined.
S7: hoisting a new lip brick 7, leveling the lip brick 7 longitudinally and transversely, and adjusting and regulating a gap between the lip brick 7 and the launder to be uniform up and down; the joint of the lip brick 7 and the launder 1 is not higher than the launder 1, the center line of the lip brick 7 is consistent with the center line of the launder 1, and a frame level meter is used for measuring whether the lip brick 7 is level, and the lip brick 7 is tightly attached to the launder 1 and fixed together by a connecting bolt after being in place.
S8: hoisting the 0 shellfish 4 to enable the lower end surface of the 0 shellfish 4 to be higher than the lip brick bracket 7015-10mm; thermocouples are respectively arranged at the connection part of the lip brick 7 and the launder 1 and at the tongue 702 of the lip brick, and the distance between the thermocouples and the surface of the lip brick 7 is 5-10mm, so that the temperature rise condition of the lip brick 7 can be monitored at a later stage.
S9: the temperature of the lip brick 7 is raised by hot air flow in the tin bath 2, and then the lip brick 7 is electrically heated to gradually raise the temperature, wherein the temperature raising process is as follows: the temperature is raised to 150 ℃ firstly, then to 350 ℃, then to 720 ℃, and the temperature raising rate is increased in sequence. Gradually reducing the height of 0 shellfish 4 according to the temperature rise condition to control the temperature rise rhythm; during the heating process, whether the lip brick 7 is abnormal or not is checked once per hour.
S10: restoring 0 shellfish 4, installing lifting device of 2# flashboard 302, pressing strip bricks and cover seam bricks, sealing 0 shellfish 4, launder 1 and lip bricks 7 all around, and preparing for leading.
The utility model provides a method for replacing the lip brick 7 of the launder 1 in an on-line thermal state of a system, which ensures that the process of replacing the lip brick 7 in a thermal state is safer, more stable and the loss is minimized, thereby forcefully ensuring the quality of finished products of a production line.
Although the present utility model has been described in detail by way of preferred embodiments with reference to the accompanying drawings, the present utility model is not limited thereto. Various equivalent modifications and substitutions may be made in the embodiments of the present utility model by those skilled in the art without departing from the spirit and scope of the present utility model, and it is intended that all such modifications and substitutions be within the scope of the present utility model/be within the scope of the present utility model as defined by the appended claims. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (9)
1. The method for replacing the runner lip brick of the float ultrathin electronic glass in an online thermal state is characterized by comprising the following steps of:
s1: the 1# flashboard (301) is dropped to smash heads; dismantling an electric heating rod of a 0-shell (4) after smashing a head, taking out a nitrogen bag at an inlet of a tin bath (2), dismantling a layering brick and a cover joint brick between a 1# flashboard (301) and a 2# flashboard (302), pushing a cover plate brick (5) between the 1# flashboard (301) and the 2# flashboard (302) and a shoulder brick filled below the cover plate brick (5) to the direction of the 1# flashboard (301), and then sealing and insulating a gap between the 1# flashboard (301) and the 2# flashboard (302) by using an insulating blanket (6);
s2: lifting the 0 shellfish (4) upwards through a 0 shellfish (4) pull rod, enabling the distance between the upper end face of the lip brick bracket (701) and the 0 shellfish (4) to be more than 500mm, removing connecting bolts and welding spots between the lip brick bracket (701) and the launder (1), translating the whole lip brick (7) towards the direction of the tin bath (2), and additionally installing sizing blocks between the lip brick bracket (701) and the side bricks of the tin bath (2);
s3: lifting the 2# flashboard (302), removing a lifting device of the 2# flashboard (302), and sealing and preserving heat at the original position of the 2# flashboard (302) of the convection groove (1) by using a heat preservation blanket (6);
s4: cleaning residual glass liquid from a front lintel brick (201) of the tin bath (2) to a lip brick tongue (702) at an observation window at one side of the tin bath (2);
s5: hanging out 0 shells (4), checking whether the old lip bricks (7) are adhered to splayed bricks and backing bricks at the inlet of the tin bath (2), and after the fact that the old lip bricks (7) are not adhered is confirmed, hanging;
s6: clearing glass adhered to the bottom and the side wall of the launder (1) and at the joint of the launder (1) and the lip brick (7), and ensuring that the contact surface of the glass and the new lip brick (7) is free from concave-convex phenomenon; after the glass is cleaned, measuring the distance between the two inner walls of the launder (1), and determining the center line of the launder (1);
s7: hoisting a new lip brick (7), wherein the joint of the lip brick (7) and the launder (1) is not higher than the launder (1), the center line of the lip brick (7) is consistent with that of the launder (1), measuring whether the lip brick (7) is horizontal or not by using a frame level meter, and tightly attaching the lip brick (7) to the launder (1) after being in place and fixing the lip brick and the launder together by using a connecting bolt;
s8: hoisting the 0 shellfish (4) to enable the lower end surface of the 0 shellfish (4) to be 5-10mm higher than the lip brick bracket (701);
s9: heating the lip brick (7) by hot air flow in the tin bath (2), and then heating the lip brick (7) by electricity to gradually heat the lip brick; gradually reducing the height of 0 shellfish (4) according to the temperature rise condition to control the temperature rise rhythm;
s10: restoring the periphery of the 0 shellfish (4), installing the lifting device of the 2# flashboard (302), installing the 2# flashboard (302), pressing the strip bricks and covering the seam bricks, sealing the periphery of the 0 shellfish (4), the launder (1) and the lip bricks (7), and preparing for the leading head.
2. The method for online hot-state replacement of runner lip bricks of float ultrathin electronic glass as claimed in claim 1, wherein in the step S1, before the 1# flashboard (301) is dropped, the hydrogen proportion in the shielding gas at the front end of the tin bath (2) is raised to more than 10%.
3. The method for online hot state replacement of runner lip bricks of float ultrathin electronic glass as claimed in claim 1, wherein in step S4, a small part of molten glass is remained to cover the exposed molten tin (10) surface when cleaning the glass, so as to prevent excessive oxidation pollution of the molten tin (10).
4. The method for online hot-state replacement of runner lip bricks of the float ultrathin electronic glass according to claim 1, wherein in the step S4, a heat insulation blanket (6) is arranged between a lip brick tongue (702) and a front lintel brick (201) of the tin bath (2), and a supporting piece is arranged below the heat insulation blanket (6).
5. The method for online hot replacement of runner lip bricks of float ultra-thin electronic glass according to claim 4, wherein the support member adopts a cooling water pipe (9).
6. The method for online hot state replacement of runner lip bricks of the float ultrathin electronic glass according to claim 1, wherein in the step S8, after hoisting the 0 shellfish (4), thermocouples are respectively arranged at the joint of the lip bricks (7) and the launder (1) and at the tongue (702) of the lip bricks, and the distance between the thermocouples and the surface of the lip bricks (7) is 5-10mm.
7. The method for online hot-state replacement of a runner lip block of a float ultra-thin electronic glass according to claim 1, wherein in step S9, when the lip block (7) is electrically heated, the temperature is raised to 150 ℃ and then to 350 ℃ and then to 720 ℃ and the temperature raising rate is sequentially increased.
8. The method for online hot-state replacement of runner lip bricks of float ultra-thin electronic glass according to claim 1, wherein the preparation before the operation is performed in step S1: and the lip brick (7) is placed nearby the runner in the month before the replacement of the lip brick (7), the lip brick (7) is heated by the heat of the runner so as to discharge the water in the lip brick (7), the lip brick (7) is assembled on a lip brick bracket (701) after the water in the lip brick (7) is discharged, and whether the electric hoist is normal or not is tested.
9. The method for online hot state replacement of runner lip bricks of float ultrathin electronic glass as claimed in claim 1, wherein the thermal blanket (6) is an aluminum silicate fiber blanket.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311239735.5A CN117285238A (en) | 2023-09-25 | 2023-09-25 | Method for online hot state replacement of runner lip bricks of float ultrathin electronic glass |
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| CN202311239735.5A CN117285238A (en) | 2023-09-25 | 2023-09-25 | Method for online hot state replacement of runner lip bricks of float ultrathin electronic glass |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117964209A (en) * | 2024-04-01 | 2024-05-03 | 江苏春戈玻璃有限公司 | Melting equipment for glass production and processing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117964209A (en) * | 2024-04-01 | 2024-05-03 | 江苏春戈玻璃有限公司 | Melting equipment for glass production and processing |
| CN117964209B (en) * | 2024-04-01 | 2024-05-28 | 江苏春戈玻璃有限公司 | Melting equipment for glass production and processing |
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