CN111499162B - Method for replacing silicon carbide rod of float glass tin bath structure in hot state - Google Patents
Method for replacing silicon carbide rod of float glass tin bath structure in hot state Download PDFInfo
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- CN111499162B CN111499162B CN202010319912.0A CN202010319912A CN111499162B CN 111499162 B CN111499162 B CN 111499162B CN 202010319912 A CN202010319912 A CN 202010319912A CN 111499162 B CN111499162 B CN 111499162B
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- tin bath
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- 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
- C03B18/18—Controlling or regulating the temperature of the float bath; Composition or purification of the float bath
Abstract
The invention discloses a method for replacing a silicon carbide rod of a float glass tin bath structure in a thermal state, which comprises the following steps: s1: closing a molten glass inlet of the tin bath body, wherein the float glass tin bath structure is in a flow-cutoff and production-stop state; s2: closing a power supply of the silicon-carbon rod heating area where the damaged silicon-carbon rod is positioned; s3: opening a hole on the tin bath big cover corresponding to the damaged silicon-carbon rod; s4: the inner partition area of the cover where the opening is located is a maintenance space, and the maintenance space is cooled through the opening; s5: the silicon-carbon rod is damaged by dismantling in the maintenance space, and a new silicon-carbon rod is replaced; s6: and after the replacement is finished, closing and sealing the open hole. By the method, only the maintenance area needs to be cooled, and other areas are kept warm and stopped production, so that the maintenance cost is saved; after the silicon carbide rod is replaced, the production line can quickly recover production, and the working efficiency is effectively improved.
Description
Technical Field
The invention belongs to the technical field of float glass tin bath structure design and application, and particularly relates to a method for replacing a silicon-carbon rod in a float glass tin bath structure in a hot state.
Background
At present, 300 float production lines with different specifications exist in China, the kiln age is generally more than 10 years, and three-phase vertical silicon carbide rods are mostly selected as electric heating elements in a tin bath. The three-phase vertical silicon-carbon rod is a special electric heating element made of silicon carbide material, and the shape of the three-phase vertical silicon-carbon rod is a mountain-shaped silicon-carbon rod. As shown in fig. 1, when in use, the tin bath cover is vertically inserted on the tin bath cover structure. The conductor part which is inserted into the top cover structure and has smaller resistance of the rod body is a silicon carbon rod, and is called as a cold end. The exposed part of the lower part of the top cover brick has larger resistance than a heating part of the silicon carbon rod, which is called as a heating end. The glass ribbon in the tin bath formally depends on the heat generated by the heating end of the silicon carbide rod to adjust the temperature so as to meet the requirements of the glass forming process. And the silicon carbide rod wiring terminal is positioned in the space of the upper large cover of the top cover brick and is connected with the ABC three-phase line of the power supply.
In the later stage of a float production line, the resistance of the silicon carbide rod is improved to be aged due to the damage of the silicon carbide rod caused by improper operation of workers or the resistance of the silicon carbide rod in a high-temperature environment for a long time, and the local temperature in the tin bath is improved and adjusted difficultly due to the reasons, so that the production adjustment and operation of the tin bath are influenced. If the old aged silicon-carbon rod is replaced by a new silicon-carbon rod, one way is that when the production line is stopped, the tin bath replaces the silicon-carbon rod in a cold state, so that the whole production line is stopped for cold repair, the cost is very high, and the influence on the production lasts for a long time, thereby causing unnecessary loss. Another way is to consider how to replace the Si-C rod in the hot state! It is known that during the production of tin baths, molten tin is present in the bath, the bath is at a high temperature and the enclosure is filled with a protective gas of nitrogen and hydrogen. How are the silicon carbide rods introduced into the tin bath cover and replaced in the tin bath under such conditions?
Disclosure of Invention
The invention provides a method for replacing a silicon carbide rod in a float glass tin bath structure in a hot state, which aims to solve the technical problems in the background art.
The technical scheme of the invention is as follows:
a method for replacing a silicon carbide rod in a float glass tin bath structure in a hot state is disclosed, wherein the float glass tin bath structure comprises a tin bath body, a top cover structure is covered on the tin bath body, and a bath inner space is formed between the tin bath body and the top cover structure; the upper cover of the top cover structure is provided with a tin bath big cover, and a cover inner space is formed between the tin bath big cover and the top cover structure; the space in the cover is divided into at least three separated areas in the cover which are not communicated with each other; the plurality of silicon carbide rods are hung on the top cover structure and are positioned in the space in the groove; the method is characterized by comprising the following steps:
s1: closing a molten glass inlet of the tin bath body, wherein the float glass tin bath structure is in a flow-cutoff and production-stop state;
s2: closing a power supply of the silicon-carbon rod heating area where the damaged silicon-carbon rod is positioned;
s3: opening a hole on the tin bath big cover corresponding to the damaged silicon-carbon rod;
s4: the inner partition area of the cover where the opening is located is a maintenance space, and the maintenance space is cooled through the opening;
s5: the silicon-carbon rod is damaged by dismantling in the maintenance space, and a new silicon-carbon rod is replaced;
s6: and after the replacement is finished, closing and sealing the open hole.
Further preferably, the step S2 further includes: and closing a power supply of the silicon-carbon rod heating area adjacent to the silicon-carbon rod heating area where the damaged silicon-carbon rod is positioned.
Further preferably, step S4 further comprises: and in the groove space, an in-groove temporary partition is arranged at the area corresponding to the damaged silicon-carbon rod, so as to form a groove partition space.
Further preferably, step S4 further comprises: and arranging cover internal temporary partitions around the damaged area where the silicon-carbon rod is located in the maintenance space to form a cover internal partition space, wherein the cover internal partition space is not communicated with the rest areas in the cover internal space, and the cover internal partition space is communicated with the opening.
Preferably, the upper end of the temporary partition in the cover is attached to the cover top of the tin bath large cover, and the lower end of the temporary partition is attached to the top cover structure.
Further preferably, step S4 further comprises: and introducing air into the maintenance space through a fan to cool the maintenance space and supplement oxygen content.
Further preferably, the air volume of the fan is at least 6000m3/h.
Further preferably, in step S4, the temperature in the maintenance area is reduced to 50 ℃ to 70 ℃.
Preferably, the damaged connecting accessory of the silicon carbide rod is removed, and the damaged silicon carbide rod is replaced.
Further preferably, step S5 further includes: step S5 further includes: and a maintenance opening is formed in the space in the groove, and the damaged silicon-carbon rod is taken out through the maintenance opening after the connecting accessory of the silicon-carbon rod is removed from the maintenance space.
Further preferably, step S5 further includes: and installing the new silicon-carbon rod to the position of the original silicon-carbon rod through a maintenance port, and connecting a new connecting accessory of the silicon-carbon rod in the maintenance space.
The invention provides a method for replacing a silicon carbide rod in a float glass tin bath structure in a hot state, which has the following advantages and positive effects compared with the prior art:
in the method, the tin bath large cover corresponding to the damaged silicon-carbon rod module is provided with the opening, the cover in which the opening is positioned is partitioned into an independent maintenance space, the maintenance space is only required to be cooled during maintenance, and other non-maintenance spaces in the float glass tin bath structure are in a heat-preservation production-stop state, so that the whole tin bath production line is prevented from being cooled, the influence on other production sections and thermal equipment is reduced, the service life of the float glass production line is effectively prolonged, and the maintenance cost is saved; the silicon carbide rod can enter the maintenance space in a hot state to be removed and replaced without waiting for the whole tin bath to be completely cooled, the replacement process is rapid and rapid, and the replacement efficiency is high; because the tin bath is in the heat preservation state, after the silicon carbide rod is replaced, the temperature is raised again, the temperature required by production can be quickly reached, the production line can quickly recover production, and the working efficiency is effectively improved.
Drawings
The above and other features and advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a cross-sectional view taken along the width of a float glass tin bath structure in accordance with the present invention;
FIG. 2 is a schematic illustration of an operator replacing a silicon carbide rod in a repair space in a float glass tin bath structure in an embodiment of the present invention;
FIG. 3 is a schematic view of a long rod box structure in an embodiment of the present invention;
FIG. 4 is a cross-sectional view along the length of a float glass tin bath structure in an embodiment of the invention.
Description of the symbols:
1-tin bath large cover; 2-a top cover structure; 3-a tin bath body; 4-a silicon carbide rod; 5-opening the hole; 6, a fan; 7-maintenance port; 8-long rod box; 9-hanging the beam; 10-molten tin and glass ribbon; 11-supporting the hanging structure; 12-a housing internal space; 13-temporary partition in the groove; 14-a shield inner partition; 15-space in the cell.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
For the sake of simplicity, only the parts relevant to the present invention are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".
Referring to fig. 1-4, the invention provides a method for replacing a tin bath silicon carbide rod in a hot state of a float glass tin bath structure, wherein the float glass tin bath structure comprises a tin bath body 3, a top cover structure 2 is covered on the tin bath body 3, and a bath inner space 15 is formed between the tin bath body 3 and the top cover structure; a tin bath big cover 1 is covered on the top cover structure 2, and a cover inner space 12 is formed between the tin bath big cover 1 and the top cover structure; the space 12 in the cover is divided into at least three separate areas in the cover which are not communicated with each other; a plurality of silicon carbide rods 4 are hung on the top cover structure 2 and are positioned in the groove inner space 15; the method comprises the following steps:
s1: closing a molten glass inlet of the tin bath body 3, and keeping the float glass tin bath structure in a flow-cutoff and production-stop state;
s2: closing a power supply of the silicon carbide rod heating area where the damaged silicon carbide rod 4 is positioned;
s3: opening a hole 5 on the tin bath big cover 1 corresponding to the damaged silicon carbide rod 4;
s4: the inner partition area of the cover where the opening 5 is located is a maintenance space, and the maintenance space is cooled through the opening 5;
s5: the damaged silicon-carbon rod 4 is removed in the maintenance space, and a new silicon-carbon rod 4 is replaced;
s6: after the replacement is completed, the sealing opening 5 is closed.
By the method, when the silicon carbide rod 4 is replaced in the float glass tin bath structure, only the maintenance space needs to be cooled, the non-maintenance area in the float glass tin bath structure is in a heat preservation production stop state, and after the silicon carbide rod 4 is replaced, the normal working production state can be quickly recovered, so that the working efficiency is greatly improved, and the maintenance cost is reduced.
Specifically, in this embodiment, top cap structure 2 is the top cap brick, has a plurality of through-holes in the top cap brick, and hang on the top of elema 4 and establish in the through-hole, and the heating end of elema is located inslot space 15, heats the tin bath cell body.
It should be noted that, in step S1, before closing the molten glass inlet of the tin bath body 3, it is necessary to ensure that the molten glass is fully distributed on the molten tin in the tin bath body 3, so as to prevent the molten tin from being oxidized by air during the process of replacing the silicon carbide rod 4. The glass bath is typically visually inspected for fullness in the float glass bath structure, although in other embodiments the manner in which the glass bath is secured to the tin bath is not limited to that described above.
Furthermore, in the present embodiment, the silicon carbide rods 4 are replaced by a person entering the tin bath cover 1; of course, in other embodiments, the replacement of the silicon carbide rod module 4 can be completed by entering the tin bath cover 1 through a robot or other equipment.
Specifically, in step S2, in this embodiment, each of the silicon carbide rod heating regions has an independent power switch, and the power switch can correspondingly turn off the power supply of the silicon carbide rod heating region where the damaged silicon carbide rod 4 is located, and the power supply of the silicon carbide rod heating region is in an on state, so as to ensure that the tin bath body 3 is in a heat preservation state, wherein whether the silicon carbide rod 4 generates heat, bends, oxidizes or breaks can be observed in an outer flesh eye of the tin bath large cover 1, thereby determining whether the silicon carbide rod is damaged, and determining the silicon carbide rod heating region where the damaged silicon carbide rod is located. Of course, in other embodiments, the manner of determining the damage of the silicon carbide rod is not limited to the above, and for example, the control system may determine the operating state of the silicon carbide rod to determine whether the silicon carbide rod is damaged.
Further, in step S2, in this embodiment, the power supply of the silicon carbide rod heating area adjacent to the silicon carbide rod heating area where the damaged silicon carbide rod 4 is located is turned off, so as to prevent the occurrence of electric leakage and further ensure the safety of maintenance personnel.
In step S3, referring to fig. 4, in this embodiment, an opening 5 is formed in the tin bath cover 1 corresponding to the damaged silicon carbide rod 4, wherein the size of the opening 5 may be determined according to the size of a person or maintenance equipment entering the tin bath cover 1 for maintenance, and is not limited herein.
In step S4, referring to fig. 4, in the present embodiment, the inside of the cover where the opening 5 is located is partitioned into the maintenance space, and the maintenance space is cooled through the opening 5. Maintenance personnel or maintenance equipment can enter the isolated space in the cover from the opening 5; the space 12 in the tin bath is divided into a plurality of in-cover partition areas through in-cover partition plates 14, so that the maintenance space is not communicated with the rest in-cover partition areas in the tin bath large cover 1, and the maintenance space is ensured to be isolated from other areas.
In this embodiment, referring to fig. 4, step S4 further includes: in the groove inner space 15, an in-groove temporary partition 13 is arranged at the area corresponding to the damaged silicon-carbon rod 4 to form an in-groove partition space, so that the heat transfer from the space adjacent to the in-groove partition space is blocked, and protective gas is transmitted; the isolated space in the groove and the maintenance space form an independent space, so that the temperature conduction of other spaces to the maintenance space is further isolated, meanwhile, the protective gas in other areas is prevented from permeating into the maintenance space, the oxygen content in the maintenance space is reduced, and the safety of maintenance personnel is further ensured.
Specifically, the inslot cuts off 13 temporarily and passes through maintenance hole 7 through a bearing structure level and gets into inslot space 15, rotates 90 with bearing structure, cuts off 13 adjustment vertical temporarily with the inslot, and the top that cuts off 13 temporarily in the inslot supports to roof structure 2, and the bottom is close as far as the glass area 10 in the molten tin bath body 3 but does not touch glass area 10, and bearing structure can support and adjust its height with the help of hydraulic lifting equipment or lift adjusting device. In this embodiment, the specific structure of the supporting structure is not limited, and may be selected according to actual requirements.
Step S4 further includes: in the maintenance space, temporary partitions (not shown in the figure) in the cover are arranged around the area where the damaged silicon-carbon rod 4 is located, and a partition space in the cover with a smaller volume is formed in the maintenance space and communicated with the opening 5, so that maintenance personnel or maintenance equipment can enter the partition space in the cover from the opening 5; the isolated space in the cover is not communicated with the rest areas in the tin bath large cover 1, thereby ensuring that the isolated space in the cover is isolated from other areas. Because the volume of the isolated space in the cover is smaller, the isolated space in the cover can be cooled and supplemented with oxygen, and the maintenance conditions of proper temperature and oxygen content can be reached more quickly, and the working efficiency is improved. Because the top cover structurally has other structures such as complicated steel pipes, silicon carbide rod connecting accessories and the like, and the temporary partition in the cover is difficult to arrange in the partition in the cover, the temporary partition in the cover is not arranged in the embodiment, and the temporary partition in the cover can also be arranged in the partition in the cover in other embodiments to improve the working efficiency, and the limitation is not made here.
Specifically, the upper end of the temporary partition in the tin bath is attached to the top of the tin bath large cover 1, and the lower end of the temporary partition is attached to the top cover structure 2. Preferably, two sides of the temporary partition in the cover extend to two sides of the tin bath big cover 1, namely, the temporary partition in the cover partitions the space between the tin bath big cover 1 and the top cover structure 2 along the cross section of the tin bath big cover 1. The number of temporary partition structures in the tin bath large cover is reduced, and the working efficiency is improved.
In this embodiment, the step S4 further includes, referring to the figure, continuously introducing air into the maintenance space by a fan 6 to cool the maintenance space and supplement the oxygen content; the non-maintenance area adjacent to the maintenance space is in a heat preservation state, the temperature in the maintenance space can be continuously raised due to the heat transfer effect, and therefore air needs to be continuously introduced to ensure that the temperature of the maintenance space is maintained in a certain range; of course, in other embodiments, other cooling gas may be introduced into the maintenance space through the opening 5 to cool the maintenance space, which is not limited herein. Meanwhile, other non-maintenance areas still maintain the normal air supply of the protective gas, and the phenomenon that the air enters the tin bath structure to cause tin liquor oxidation is prevented.
In step S4 of this embodiment, the air volume of the blower is at least 6000m3/h, and the ventilation time is at least 1 hour, so as to ensure that the oxygen content in the maintenance space is sufficient and the temperature of the maintenance space 12 is maintained within the appropriate temperature range.
Further, in step S4, the temperature in the maintenance space is reduced to 50-70 ℃, preferably to 60 ℃, and then the maintenance personnel can enter the tin bath big cover 1 to operate by wearing the protective clothing; it should be noted that the internal structure and the material of the tin bath body 3 corresponding to the maintenance space are adversely affected due to the excessively low temperature, and the maintenance personnel cannot enter the maintenance space to replace the silicon carbide rod 4 due to the excessively high temperature.
In step S5, the silicon carbide rod 4 is dismantled in the maintenance space and replaced by a new silicon carbide rod 4;
further, in this embodiment, referring to fig. 1, the connection accessory of the damaged silicon carbide rod 4 is removed, and the damaged silicon carbide rod 4 is replaced, wherein the connection accessory comprises a cable connected with the silicon carbide rod 4, a bolt fastener for fixedly hanging the top of the silicon carbide rod in the top cover structure 2, and the like. Of course, in other embodiments, the removal of the silicon carbide rod 4 may be accomplished by removing other structures on the damaged silicon carbide rod 4.
Further, in this embodiment, referring to fig. 1-2, in step S5, a maintenance opening 7 is formed in a space between the top cover structure and the tin bath, and after the connection accessory of the silicon carbide rod 4 is removed from the maintenance space, the damaged silicon carbide rod 4 is taken out through the maintenance opening 7. In this embodiment, the live edge seal existing between the tin bath 3 and the roof structure 2 in the prior art float glass tin bath structure is preferably opened to form a service opening 7. In other embodiments, however, a service opening 7 can also be provided in addition.
Further, in this embodiment, referring to fig. 2, in step S5, the new silicon carbide rod 4 is installed to the position of the original silicon carbide rod through the maintenance opening 7, and the connection accessory of the new silicon carbide rod 4 is connected in the maintenance space.
In this embodiment, referring to fig. 1 to 4, in step S5, the specific implementation process of replacing the damaged sic rod module is as follows:
a. the top cover structure 2 is hung above the tin bath body 3 through a hanging beam 9, a wood board is laid on the hanging beam 9 of the top cover structure 2, and a maintenance worker creeps or squats on the wood board to remove the connecting accessories of the damaged silicon carbon rods 4; in the float glass tin bath structure, the top cover structure 2 is a top cover brick, the bearing capacity of the top cover brick is weaker, the temperature is higher, and maintenance personnel can not directly stand on the top cover brick for operation.
b. Step a is carried out, meanwhile, an operator on the ground opens a movable edge seal between a tin bath body 3 corresponding to the maintenance space and a top cover structure 2, a long rod box 8 extends into the position below a damaged silicon carbide rod 4 through the movable edge seal, after the maintenance personnel in the tin bath large cover 1 remove the wire, the damaged silicon carbide rod falls into the long rod box 8, and the operator on the ground moves out the damaged silicon carbide rod 4;
c. an operator on the ground inserts a new silicon carbide rod 4 into a long rod box 8, the long rod box 8 horizontally enters the space 15 in the groove through a maintenance opening 7, the new silicon carbide rod 4 extends below a top cover structure 2, a handle of the long rod box 8 is rotated by 90 degrees, the silicon carbide rod 4 is adjusted to be vertical and moved upwards, the handle is aligned with a mounting hole in the top cover structure 2 and inserted into the hole, and the long rod box 8 can adjust the height thereof by means of hydraulic lifting equipment or a lifting adjusting device;
d. the operating personnel in the tin bath big cover 1 hooks the elema 4 through auxiliary assembly such as hook to fix new elema 4 through bolt and nut etc. and carry out the connection of cable, treat that new elema 4 hoists the location after, withdraw from stock box 8, accomplish the change.
Referring to fig. 3, the long rod box 8 is an auxiliary tool for receiving the damaged sic rod 4 and transferring a new sic rod 4, but in other embodiments, the specific structure of the auxiliary tool is not limited to the above.
In this embodiment, in step S6, after the replacement is completed, the sundries in the tin bath large cover 1 are cleaned, the tin bath large cover 1 is quickly removed, the sealing opening 5 and the maintenance opening 7 are closed, the float glass tin bath structure is sealed, the protective gas is introduced into the tin bath large cover 1 again, the power is recovered, after the proper working temperature is reached, the tin bath glass liquid inlet is opened, and the glass liquid enters the tin bath tank body 3 again, so that the normal production is recovered.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is still within the scope of the present invention if they fall within the scope of the claims of the present invention and their equivalents.
Claims (7)
1. A method for replacing a silicon carbide rod in a float glass tin bath structure in a hot state is disclosed, wherein the float glass tin bath structure comprises a tin bath body, a top cover structure is covered on the tin bath body, and a bath inner space is formed between the tin bath body and the top cover structure; the upper cover of the top cover structure is provided with a tin bath big cover, and a cover inner space is formed between the tin bath big cover and the top cover structure; the space in the cover is divided into at least three separated areas in the cover which are not communicated with each other; the silicon carbide rods are hung on the top cover structure and are positioned in the groove inner space; it is characterized by comprising the following steps:
s1: ensuring that the molten glass is fully distributed on the molten tin in the molten tin bath body to prevent air oxidation; closing a molten glass inlet of the tin bath body, wherein the float glass tin bath structure is in a flow-cutoff and production-stop state;
s2: closing a power supply of the silicon carbide rod heating area where the damaged silicon carbide rod is positioned, and preventing electric leakage;
s3: opening a hole on the tin bath big cover corresponding to the damaged silicon-carbon rod;
s4: the partition area in the cover where the opening is located is a maintenance space, and temporary partitions in the cover are arranged around the area where the damaged silicon carbide rod is located in the maintenance space to form partition spaces in the cover; the upper end of the partition space in the cover is attached to the cover top of the tin bath large cover, and the lower end of the partition space in the cover is attached to the top cover structure; the shield inner partition space is not communicated with the rest areas in the shield inner space, and the shield inner partition space is communicated with the opening; cooling and supplementing oxygen to the maintenance space through the open hole;
s5: a maintenance opening is formed in the space in the groove, the silicon-carbon rod is damaged by being removed from the maintenance space, a new silicon-carbon rod is replaced, and the damaged silicon-carbon rod is taken out through the maintenance opening;
s6: and after the replacement is finished, cleaning sundries in the tin bath large cover, quickly withdrawing the tin bath large cover, and closing and sealing the opening.
2. The method of claim 1 for hot replacement of a silicon carbide rod for a float glass tin bath structure, wherein step S2 further comprises: and closing a power supply of the silicon-carbon rod heating area adjacent to the silicon-carbon rod heating area where the damaged silicon-carbon rod is positioned.
3. The method for hot replacement of a silicon carbide rod for a float glass tin bath structure according to claim 1, wherein the step S4 further comprises: and in the groove space, arranging a temporary partition in the groove at the area corresponding to the damaged silicon-carbon rod to form a partition space in the groove.
4. The method for hot replacement of a silicon carbide rod for a float glass tin bath structure according to claim 1, wherein the step S4 further comprises: and introducing air into the maintenance space through a fan to cool the maintenance space and supplement oxygen content.
5. A method of hot replacement of a silicon carbide rod for a float glass tin bath structure according to claim 4, wherein the air flow of the blower is at least 6000m3/h.
6. A method for hot replacement of a silicon carbide rod for a float glass tin bath structure according to claim 1, wherein in step S4 the temperature in the service space is reduced to 50 ℃ to 70 ℃.
7. The method for replacing a silicon carbide rod in a hot state for a float glass tin bath structure according to claim 1, wherein the step S5 further comprises: and installing the new silicon carbide rod to the position of the original silicon carbide rod through a maintenance port, and connecting a new connecting accessory of the silicon carbide rod in the maintenance space.
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| JPH1121137A (en) * | 1997-06-30 | 1999-01-26 | Asahi Glass Co Ltd | Production of sheet glass by float method and production apparatus used for the process |
| CN202499800U (en) * | 2012-02-08 | 2012-10-24 | 华尔润玻璃产业股份有限公司 | Tin bath of ultrathin float glass |
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Effective date of registration: 20230907 Address after: No. 8, Lane 281, Hong'an Road, Zhujing Town, Jinshan District, Shanghai, 200000 Patentee after: SHANGHAI PONY TECHNOLOGY Co.,Ltd. Address before: 201503 Building 8, Lane 281, Hong'an Road, Zhujing Town, Jinshan District, Shanghai Patentee before: SHANGHAI PONY GLASS TECHNOLOGY Co.,Ltd. |