CN113046529A - Steel billet heating system and method - Google Patents
Steel billet heating system and method Download PDFInfo
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- CN113046529A CN113046529A CN202110267876.2A CN202110267876A CN113046529A CN 113046529 A CN113046529 A CN 113046529A CN 202110267876 A CN202110267876 A CN 202110267876A CN 113046529 A CN113046529 A CN 113046529A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
- C21D1/52—Methods of heating with flames
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/70—Furnaces for ingots, i.e. soaking pits
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Abstract
The embodiment of the application provides a steel billet heating system and a method, wherein the steel billet heating system comprises: the heating furnace comprises a first roller way, a preheating section, a heating section, a soaking section and a second roller way which are sequentially communicated, wherein a plurality of burners are respectively arranged on the heating section and the soaking section; the temperature detection device is arranged on the outer wall of the heating furnace and is used for acquiring temperature data of the steel billet; and the control device is connected with the temperature detection device and the burner and used for receiving and storing the temperature data sent by the temperature detection device and adjusting the on-off state of the burner according to the temperature data. The application realizes the accurate heating of the steel billets with different temperatures, improves the heating effect and reduces the waste of fuel.
Description
Technical Field
The application relates to the technical field of steel manufacturing, in particular to a billet heating system and method.
Background
The heating furnace is a main energy consumption device in a steel rolling process. The requirements of the rolling process are met, the optimal control of the furnace atmosphere, the heating time and the heating temperature is realized, and the reduction of the oxidation burning loss and the energy consumption is the goal pursued by the production process of the steel rolling heating furnace. In the prior art, in order to save gas consumption, a mode of feeding the red conveying blanks into a furnace preferentially is usually adopted, but when the transfer capacity of the red conveying blanks is not matched with the steel rolling capacity and the red conveying blanks cannot meet the requirement of normal production, a certain amount of normal-temperature blanks are required to be supplemented to meet the production requirement. Due to the addition of the blank at the normal temperature, the billet in the heating furnace is staggered in hot and cold, the gas consumption is difficult to adjust by operators in time, the billet at different temperatures in the furnace cannot be accurately heated, the fuel waste is caused, the heating effect on the billet is poor, and the start rolling temperature of the discharged billet cannot be guaranteed within the process requirement range.
Disclosure of Invention
An object of the embodiments of the present application is to provide a billet heating system and method, so as to realize accurate heating of billets of different temperatures, improve the heating effect, and reduce the waste of fuel.
A first aspect of an embodiment of the present application provides a blank heating system, including: the heating furnace comprises a first roller way, a preheating section, a heating section, a soaking section and a second roller way which are sequentially communicated, wherein a plurality of burners are respectively arranged on the heating section and the soaking section; the temperature detection device is arranged on the outer wall of the heating furnace and is used for acquiring temperature data of the steel billet; and the control device is connected with the temperature detection device and the burner and used for receiving and storing the temperature data sent by the temperature detection device and adjusting the on-off state of the burner according to the temperature data.
In an embodiment, the heating section is provided with a plurality of first burners and a plurality of second burners, the plurality of first burners are arranged on the top of the heating section and distributed in a dot matrix, and the plurality of second burners are respectively located on two sides of the heating section and arranged along the moving direction of the billet in the heating section.
In one embodiment, the soaking section is provided with a plurality of third burners, and the third burners are arranged on the top of the soaking section and distributed in a dot matrix manner.
In an embodiment, the temperature detection device includes a plurality of infrared thermometers, and at least one infrared thermometer is respectively installed on the preheating section, the heating section and the soaking section.
A second aspect of the embodiments of the present application provides a method for heating a steel billet, including: the method comprises the following steps that a steel billet enters a preheating section of a heating furnace from a first roller way, and the steel billet is heated in the preheating section according to a preset first heating time length; the temperature detection device collects the current temperature of the steel billet in real time and uploads the current temperature to the control device; and respectively controlling the burners of the heating section and the soaking section to sequentially burn in batches according to the current temperature, and heating the steel billet to the target temperature.
In one embodiment, the method further comprises: the temperature detection device collects the temperature of the steel billet at a first roller way of the heating furnace as the charging temperature, and the charging temperature is uploaded to the control device.
In an embodiment, the step of respectively controlling the burners of the heating section and the burners of the soaking section to sequentially burn in batches according to the current temperature to heat the steel billet to the target temperature includes: the billet steel enters the heating section, and when the current temperature is lower than a first preset threshold value, all burners of the heating section are controlled to be started in batches and sequentially to burn; when the current temperature is greater than or equal to a first preset threshold, determining a target heating area according to the difference value between the current temperature and the first preset threshold, and controlling burners in the target heating area to be sequentially started in batches for combustion.
In an embodiment, the controlling the burners of the heating section and the soaking section to sequentially burn in batches according to the current temperature to heat the steel billet to the target temperature further includes: the steel billet enters the soaking section, and when the current temperature is lower than a second preset threshold value, all burners of the soaking section are controlled to be started in batches and sequentially to burn; and when the current temperature is greater than or equal to a second preset threshold value, controlling the burners at the tail end region of the soaking section to be opened, and uniformly heating the steel billet.
In an embodiment, the current temperature includes the first temperature and the second temperature respectively corresponding to the two ends of the steel billet and a third temperature corresponding to the middle area of the steel billet, and the controlling the burners of the heating section and the burners of the soaking section to sequentially burn in batches according to the current temperature to heat the steel billet to the target temperature includes: and respectively comparing the first temperature, the second temperature and the third temperature with set values, starting burners in corresponding areas according to comparison results, and locally heating the steel billet with the temperature lower than the set values.
In one embodiment, the furnace gas temperature in the preheating section is 900 ℃, the first heating time is 15 minutes, and the second heating time in the heating section is 25 minutes.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a billet heating system according to an embodiment of the present application;
FIG. 2 is a schematic view of a furnace according to an embodiment of the present application;
fig. 3 is a schematic flow chart of a billet heating method according to an embodiment of the present application.
Reference numerals:
100-a steel billet heating system, 110-a heating furnace, 111-a first roller way, 112-a preheating section, 113-a heating section, 114-a soaking section, 115-a second roller way, 120-a temperature detection device, 130-a control device, 140-burners, 141-a first burner, 142-a second burner, 143-a third burner and 150-a steel billet.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
In the description of the present application, the terms "first," "second," and the like are used for distinguishing between descriptions and do not denote an order of magnitude, nor are they to be construed as indicating or implying relative importance.
In the description of the present application, the terms "comprises," "comprising," and/or the like, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof.
In the description of the present application, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are absolutely required to be horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, the terms "upper", "lower", "left", "right", "front", "back", "inner", "outer", and the like refer to orientations or positional relationships that are based on orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally found in the products of the application, and are used for convenience in describing the present application, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present application.
In the description of the present application, the terms "mounted," "disposed," "provided," "connected," and "configured" are to be construed broadly unless expressly stated or limited otherwise. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be internal to two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a billet heating system 100 according to an embodiment of the present application, and fig. 2 is a schematic structural diagram of a heating furnace 110 according to an embodiment of the present application. The billet heating system 100 includes: the heating furnace 110, the temperature detection device 120 and the control device 130, wherein the heating furnace 110 comprises: the steel billet heating device comprises a first roller way 111, a preheating section 112, a heating section 113, a soaking section 114 and a second roller way 115, wherein the first roller way 111 is communicated with the preheating section 112, the preheating section 112 is communicated with the heating section 113, the heating section 113 is communicated with the soaking section 114, the soaking section 114 is communicated with the second roller way 115, a steel billet 150 to be heated can enter the heating furnace 110 from the first roller way 111, and the steel billet can leave the heating furnace from the second roller way 115 after sequentially passing through the preheating section 112, the heating section 113 and the soaking section 114 in a stepping mode. The billet 150 may be a hot-transfer billet or a cold billet.
The heating section 113 and the soaking section 114 are respectively provided with a plurality of burners 140, and the temperature detection device 120 is arranged on the outer wall of the heating furnace 110 and is used for collecting temperature data of the steel billet 150, wherein the temperature data may include temperatures of the steel billet 150 at different positions in the heating furnace 110. The control device 130 is connected with the temperature detection device 120 and the burner 140, and the control device 130 is used for receiving and storing the temperature data sent by the temperature detection device 120 and adjusting the on-off state of the burner 140 according to the temperature data.
In one embodiment, the temperature detecting device 120 may include a plurality of infrared thermometers, and at least one infrared thermometer is respectively installed on the preheating section 112, the heating section 113 and the soaking section 114 of the heating furnace 110.
In an embodiment, an infrared thermometer may also be installed at the first roller 111 of the heating furnace 110 for collecting the entry temperature of the steel billet 150 into the heating furnace 110. The infrared thermometer uploads the entry temperature to the control device 130, and the control device 130 receives the entry temperature uploaded by the infrared thermometer, records the current time, stores the current time as the entry time, and counts the number of steel billets in the heating furnace 110 in real time.
In an embodiment, the control device 130 may include a PLC (programmable logic controller) and a computer, and the temperature data collected by the temperature detection device 120 may be transmitted to the computer through the PLC for storage, and the data stored on the computer includes, but is not limited to, temperature data, time data, billet position data, and the like.
In an embodiment, the preheating section 112 is provided with a flue, and the furnace pressure in the heating furnace 110 is in a micro-negative pressure state, so that the fluidity of the furnace gas can be ensured, and the heat conduction of the steel billet 150 can be accelerated.
In one embodiment, the heating furnace 110 mainly transfers heat by convection and radiation, wherein the burner 140 is not disposed in the preheating section 112, mainly by convection heat transfer, and the furnace gas temperature of the preheating section 112 can be calculated by the following formula:
Q＝h*(tf-tw)
wherein Q represents the furnace gas temperature, h represents the height, tw represents the wall temperature, and tf represents the convective gas temperature.
In one embodiment, the heating section 113 is provided with a slightly oxidizing atmosphere, i.e., an excess of air, and the soaking section 114 is provided with a slightly reducing atmosphere, i.e., an excess of fuel, so that the oxidation rate of the billet 150 can be reduced and the yield can be increased.
In an embodiment, the heating section 113 is provided with a plurality of first burners 141 and a plurality of second burners 142, the plurality of first burners 141 are disposed on the top of the heating section 113 and distributed in a dot matrix, and the plurality of second burners 142 are respectively located on two sides of the heating section 113 and disposed along the moving direction of the billet 150 in the heating section 113.
In an embodiment, the number of the first burners 141 may be 24, the 24 first burners 141 are divided into four rows, each row is eight, the eight burners are distributed on the top of the heating section 113 in a dot matrix, the number of the second burners 142 may be 8, the 8 second burners 142 are evenly distributed on two sides of the heating section 113, and one side of the four burners is four, and the burners are arranged along the moving direction of the billet 150 in the heating section 113.
In an embodiment, the soaking section 114 is provided with a plurality of third burners 143, and the plurality of third burners 143 are arranged on the top of the soaking section 114 and distributed in a lattice manner.
In an embodiment, the number of the third burners 143 may be 24, and the 24 third burners 143 are divided into four rows of eight burners, and the eight burners are distributed on the top of the soaking section 114 in a lattice manner.
In one embodiment, the preheating section 112 of the furnace 110 can accommodate 20 billets 150, the heating section 113 can accommodate 30 billets 150, and the soaking section can accommodate 26 billets 150.
As shown in fig. 3, which is a schematic flow chart of a billet heating method according to an embodiment of the present application, the method can be executed by the billet heating system 100 shown in fig. 1 to achieve precise heating of billets with different temperatures, improve heating effect, and reduce waste of fuel. The method comprises the following steps:
step 210: the steel billet 150 enters the preheating section 112 of the heating furnace 110 from the first roller way 111, and the steel billet 150 is heated in the preheating section 112 according to a preset first heating time period.
In the above steps, the furnace gas temperature of the preheating section 112 may be 900 ℃, the first heating time period may be 15 minutes, and the preheating section 112 may transfer heat by convection.
In one embodiment, the temperature of the steel billet 150 with the charging temperature of 200 ℃ can be raised from 200 ℃ to 375 ℃ by heating the steel billet 150 with the charging temperature of 200 ℃ through the preheating section 112, and can be raised from 600 ℃ to 675 ℃ by heating the steel billet 150 with the charging temperature of 600 ℃ through the preheating section 112.
Step 220: the temperature detection device 120 collects the current temperature of the steel billet 150 in real time and uploads the current temperature to the control device 130.
In the above steps, the temperature detecting device 120 includes a plurality of infrared thermometers, and one or more infrared thermometers may be respectively disposed outside the furnace wall of the preheating section 112, the furnace wall of the heating section 113, and the furnace wall of the soaking section 114 as required, for acquiring the current temperatures of the steel billet 150 at different stepping positions of the heating furnace 110.
Step 230: and controlling the burners 140 of the heating section 113 and the burners 140 of the soaking section 114 to burn in turn in batches according to the current temperature, and heating the steel billet 150 to the target temperature.
In the above step, the second heating time period in the heating section 113 may be 25 minutes.
In an embodiment, the step of controlling the burners 140 of the heating section 113 and the burners 140 of the soaking section 114 to sequentially burn in batches according to the current temperature to heat the steel billet 150 to the target temperature includes: the billet 150 enters the heating section 113, and when the current temperature is lower than a first preset threshold value, all burners 140 of the heating section 113 are controlled to be started in batches and sequentially to burn; when the current temperature is greater than or equal to a first preset threshold, determining a target heating area according to the difference value between the current temperature and the first preset threshold, and controlling the burners 140 in the target heating area to be sequentially started in batches for combustion.
In the above step, the first preset threshold may be 400 ℃. The steel billet 150 enters the heating section 113, the control device 130 judges whether the current temperature of the steel billet 150 is less than 400 ℃, if the current temperature of the steel billet 150 is less than 400 ℃, all burners 140 of the heating section 113 are controlled to be opened in turn in batches for combustion, specifically, the first burners 141 in the first row and the first burners 142 on two sides are controlled to be opened at first, the first burners 141 in the second row and the second burners 142 on two sides, the first burners 141 in the third row and the third burners 142 on two sides are opened in turn along with the forward movement of the steel billet 150, and so on.
In an embodiment, the heating section 113 may include four batches of burners 140, the heating time of each batch of burners 140 is 6 minutes, and the temperature thresholds of each batch of burners 140 may be preset, for example, the temperature thresholds of the first burner 141 in the first row and the first second burners 142 on both sides are 400 ℃, the temperature thresholds of the first burner 141 in the second row and the second burners 142 on both sides are 600 ℃, the temperature thresholds of the first burner 141 in the third row and the third second burners 142 on both sides are 800 ℃, and the temperature thresholds of the first burner 141 in the fourth row and the fourth second burners 142 on both sides are 1000 ℃.
When the steel billet 150 enters the corresponding position of each batch of burners 140, the batch of burners 140 are started to heat the steel billet 150 when the current temperature of the steel billet 150 is detected to be smaller than the temperature threshold of the batch of burners 140, and the batch of burners 140 are not started when the current temperature of the steel billet 150 is detected to be larger than or equal to the temperature threshold of the batch of burners 140. The heating section 113 may heat the steel slab 150 to 1000 c by convection and radiation heat transfer.
In an embodiment, the step of controlling the burners 140 of the heating section 113 and the burners 140 of the soaking section 114 to sequentially burn in batches according to the current temperature to heat the steel billet 150 to the target temperature further includes: the steel billet 150 enters the soaking section 114, and when the current temperature is lower than a second preset threshold value, all burners 140 of the soaking section 114 are controlled to be started in batches and sequentially to burn; and when the current temperature is greater than or equal to a second preset threshold value, controlling the burners 140 at the tail end region of the soaking section 114 to be opened, and uniformly heating the steel billet 150.
In the above step, the second preset threshold may be 1000 ℃. The billet 150 enters the soaking section 114, the control device 130 judges whether the current temperature of the billet 150 is less than 1000 ℃, if the current temperature of the billet 150 is less than 1000 ℃, all burners 140 of the soaking section 114 are controlled to be sequentially started in batches for combustion, specifically, the third burner 143 in the first row is controlled to be started to heat the billet 150, and when the billet 150 reaches the third burner 143 in the second row, the current temperature of the billet 150 reaches 1050 ℃. As the billet 150 moves forward, the third burners 143 in the second row are sequentially turned on, the third burners 143 in the third row are turned on, and so on.
If the current temperature of the steel billet 150 is greater than or equal to 1000 ℃, the third burner 143 in the first row does not need to be opened, and only the burner 140 in the end region of the soaking section 114 needs to be controlled to be opened to uniformly heat the steel billet 150, wherein the burner 140 in the end region refers to the third burner 143 in the last two rows.
In one embodiment, the step of heating the steel blank 150 to the target temperature by controlling the burners 140 of the heating section 113 and the burners 140 of the soaking section 114 to sequentially burn in batches according to the current temperature includes: and respectively comparing the first temperature, the second temperature and the third temperature with set values, opening the burners 140 in the corresponding areas according to the comparison result, and locally heating the steel billet 150 with the temperature lower than the set values.
In the above step, since the steel billet 150 may have a temperature difference along the length direction, a plurality of infrared thermometers, for example, three infrared thermometers, may be disposed on the outer wall of the heating furnace 110 along the length direction of the steel billet 150, and are respectively located at two ends and a middle region of the steel billet 150, the infrared thermometers detect that the current temperature of the left end of the steel billet 150 is the first temperature, the infrared thermometers detect that the current temperature of the right end of the steel billet 150 is the second temperature, and the infrared thermometers detect that the current temperature of the middle region of the steel billet 150 is the third temperature. The first temperature, the second temperature, and the third temperature are compared with the set values, respectively, and the billet 150 having a temperature lower than the set value is locally heated according to the comparison result.
For example, the third batch of burners 140 includes: the temperature threshold of the third batch of burners 140 is 800 ℃, if the billet 150 enters the corresponding position of the third batch of burners 140, the first temperature and the second temperature are lower than 800 ℃, and the third temperature is higher than 800 ℃, only the first burner 141 in the first row and the first column of the third row, the first burner 141 in the sixth row and the two second burners 142 may be turned on to heat the billet 150.
In one embodiment, the method further comprises: the temperature detection device 120 collects the temperature of the billet 150 at the first roller 111 of the heating furnace 110 as the charging temperature, and uploads the charging temperature to the control device 130.
This application is through carrying out timing temperature to steel billet 150 and detecting, every steel billet 150 income stove temperature of real-time tracking, go into the position of stove temperature and steel billet 150 at heating furnace 110 internal motion according to steel billet 150, when low temperature steel billet moves the heating section, heating section 113's nozzle 140 heats the low temperature steel billet according to setting for heating temperature automatic start nozzle 140, when high temperature steel billet moves the heating section, reach or be close to the setting for temperature, heating section 113's nozzle 140 does not start or is that the part starts to heat, so circulate the heat supply, reach the target temperature, carry out accurate heating, thereby save gas consumption, improve the heating effect.
In the embodiments provided in the present application, the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s).
In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. The above description is only a preferred embodiment of the present application, and is only for the purpose of illustrating the technical solutions of the present application, and not for the purpose of limiting the present application. Any modification, equivalent replacement, improvement or the like, which would be obvious to one of ordinary skill in the art and would be within the spirit and principle of the present application, should be included within the scope of the present application.
Claims (10)
1. A billet heating system, comprising:
the heating furnace comprises a first roller way, a preheating section, a heating section, a soaking section and a second roller way which are sequentially communicated, wherein a plurality of burners are respectively arranged on the heating section and the soaking section;
the temperature detection device is arranged on the outer wall of the heating furnace and is used for acquiring temperature data of the steel billet;
and the control device is connected with the temperature detection device and the burner and used for receiving and storing the temperature data sent by the temperature detection device and adjusting the on-off state of the burner according to the temperature data.
2. The billet heating system of claim 1, wherein the heating section is provided with a plurality of first burners and a plurality of second burners, the plurality of first burners are arranged on the top of the heating section and distributed in a lattice manner, and the plurality of second burners are respectively arranged on two sides of the heating section and arranged along the moving direction of the billet in the heating section.
3. The steel billet heating system according to claim 1, wherein a plurality of third burners are installed on the soaking section, and the plurality of third burners are arranged on the top of the soaking section and distributed in a lattice manner.
4. A steel billet heating system according to claim 1, wherein the temperature detection means comprises a plurality of infrared thermometers, at least one infrared thermometer being mounted on each of the preheating section, the heating section and the soaking section.
5. A method of heating a steel slab, comprising:
the method comprises the following steps that a steel billet enters a preheating section of a heating furnace from a first roller way, and the steel billet is heated in the preheating section according to a preset first heating time length;
the temperature detection device collects the current temperature of the steel billet in real time and uploads the current temperature to the control device;
and respectively controlling the burners of the heating section and the soaking section to sequentially burn in batches according to the current temperature, and heating the steel billet to the target temperature.
6. The method of claim 5, further comprising:
the temperature detection device collects the temperature of the steel billet at a first roller way of the heating furnace as the charging temperature, and the charging temperature is uploaded to the control device.
7. The method of claim 5, wherein the step of controlling the burners of the heating section and the soaking section to perform combustion in batches in sequence according to the current temperature to heat the steel billet to the target temperature comprises the following steps:
the billet steel enters the heating section, and when the current temperature is lower than a first preset threshold value, all burners of the heating section are controlled to be started in batches and sequentially to burn;
when the current temperature is greater than or equal to a first preset threshold, determining a target heating area according to the difference value between the current temperature and the first preset threshold, and controlling burners in the target heating area to be sequentially started in batches for combustion.
8. The method of claim 7, wherein the heating section burners and the soaking section burners are controlled to be sequentially burned in batches according to the current temperature to heat the steel slab to the target temperature, and the method further comprises:
the steel billet enters the soaking section, and when the current temperature is lower than a second preset threshold value, all burners of the soaking section are controlled to be started in batches and sequentially to burn;
and when the current temperature is greater than or equal to a second preset threshold value, controlling the burners at the tail end region of the soaking section to be opened, and uniformly heating the steel billet.
9. The method of claim 5, wherein the current temperature comprises a first temperature and a second temperature corresponding to two ends of the steel billet and a third temperature corresponding to a middle area of the steel billet respectively, and the step of controlling burners of the heating section and the soaking section to perform combustion in batches in sequence according to the current temperature to heat the steel billet to a target temperature comprises the steps of:
and respectively comparing the first temperature, the second temperature and the third temperature with set values, starting burners in corresponding areas according to comparison results, and locally heating the steel billet with the temperature lower than the set values.
10. The method according to claim 5, wherein the furnace gas temperature in the preheating section is 900 ℃, the first heating time period is 15 minutes, and the second heating time period in the heating section is 25 minutes.
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| CN117928220A (en) * | 2024-03-19 | 2024-04-26 | 淄博煜鼎新材料科技有限公司 | Red mud-based ceramic product sintering roller kiln |
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| CN111534682A (en) * | 2020-04-30 | 2020-08-14 | 首钢京唐钢铁联合有限责任公司 | Pulse type heating furnace air-fuel ratio control method and device based on flow control |
| CN112444125A (en) * | 2019-08-29 | 2021-03-05 | 张家港凯胜控制设备工程有限公司 | Temperature accurate control system of walking beam furnace of hot rolling mill |
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2021
- 2021-03-12 CN CN202110267876.2A patent/CN113046529A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112444125A (en) * | 2019-08-29 | 2021-03-05 | 张家港凯胜控制设备工程有限公司 | Temperature accurate control system of walking beam furnace of hot rolling mill |
| CN111534682A (en) * | 2020-04-30 | 2020-08-14 | 首钢京唐钢铁联合有限责任公司 | Pulse type heating furnace air-fuel ratio control method and device based on flow control |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117928220A (en) * | 2024-03-19 | 2024-04-26 | 淄博煜鼎新材料科技有限公司 | Red mud-based ceramic product sintering roller kiln |
| CN117928220B (en) * | 2024-03-19 | 2024-05-24 | 淄博煜鼎新材料科技有限公司 | Red mud-based ceramic product sintering roller kiln |
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