CN114383424B - Roller way billet information tracking method of step heating furnace - Google Patents
Roller way billet information tracking method of step heating furnace Download PDFInfo
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- CN114383424B CN114383424B CN202111570841.2A CN202111570841A CN114383424B CN 114383424 B CN114383424 B CN 114383424B CN 202111570841 A CN202111570841 A CN 202111570841A CN 114383424 B CN114383424 B CN 114383424B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000002184 metal Substances 0.000 claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- 230000002159 abnormal effect Effects 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims description 43
- 238000009749 continuous casting Methods 0.000 claims description 36
- 229910000831 Steel Inorganic materials 0.000 claims description 34
- 239000010959 steel Substances 0.000 claims description 34
- 230000000630 rising effect Effects 0.000 claims description 27
- 238000005096 rolling process Methods 0.000 claims description 17
- 238000010079 rubber tapping Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 239000003344 environmental pollutant Substances 0.000 description 1
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- 231100000719 pollutant Toxicity 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D2003/0001—Positioning the charge
- F27D2003/0002—Positioning the charge involving positioning devices, e.g. buffers, buffer zones
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
- F27D2003/0059—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities comprising tracks, e.g. rails and wagon
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention relates to a roller way billet information tracking method of a step heating furnace, which comprises the following steps: a pair of laser cold and hot metal detectors are respectively arranged at the corresponding positions of the roller way; setting up corresponding billet information queues for each roller way in a PLC system; and moving the billet information into or out of the corresponding billet information queue by combining the signals of the laser cold and hot metal detectors at the corresponding positions with the forward and reverse rotation signals of the corresponding roller tables, thereby realizing the tracking of the billet information under normal or abnormal production conditions. By adopting the method, full automation of the billet information tracking process can be realized, the labor cost is saved, and the product quantity errors caused by manual statistics errors are reduced, so that the influence on the normal operation of enterprises is avoided.
Description
Technical Field
The invention relates to the field of step-type heating furnaces in the metallurgical industry, in particular to a roller way billet information tracking method of a step-type heating furnace.
Background
The step-by-step heating furnace in metallurgical industry is a gas combustion industrial furnace for keeping warm or heating cold billets in hot billets or billet holders fed by continuous casting to the rolling temperature of a subsequent rolling mill in a steel rolling process, and is called a step-by-step heating furnace because the billet is transferred and advanced step by means of the actions of ascending, advancing, descending and retreating a water-cooled metal beam provided at the bottom of the furnace. Its advantages are: flexible material transportation, and can discharge all furnace burden out of the furnace when necessary; the material blanks are swung away on the furnace bottom or the beam at intervals, so that the material blanks can be heated more quickly and uniformly; the problems of arch steel and sticking steel of other types of heating furnaces are completely eliminated, so that the furnace length design of the step-type heating furnace is not limited by the problems.
The following requirements are required for tracking billet information of the step heating furnace:
1. the detecting instrument for tracking the billet outside the heating furnace is easy to be shielded by external interferents (personnel, pollutants and the like) or signal failure caused by equipment self faults, and the deployment of the detecting instrument is required to be redundant deployment.
2. In the tracking process of the billet information, the problems of loss of the billet information, time sequence error and the like cannot occur. At the collecting roller way, the information tracking of the cold-packed and hot-fed billets cannot be disordered.
3. When tracking in the heating furnace, the forward or backward signals of the walking beam and the stepping distance may be inaccurate, and the billet cannot be positioned completely according to the accumulated billet position of the stepping distance.
4. Under abnormal production conditions, such as tapping and reversing (billet from the outlet of the heating furnace is reversed by a roller way and returned to the heating furnace), entering and returning (billet from the inlet of the heating furnace is reversed by a cantilever roller of entering and returned to the roller way of the entering area), and billet lifting pins (billet stopped on the roller way outside the furnace is lifted by a crown block and lifted into a middle billet warehouse), the tracking of billet information and the information transmission with the upstream and downstream processes also need to be ensured to be correct.
Disclosure of Invention
The invention aims to provide a roller way billet information tracking method of a step heating furnace so as to meet the billet information tracking requirement. For this purpose, the invention adopts the following specific technical scheme:
the roller way billet information tracking method of the step heating furnace can comprise the following steps:
a pair of laser cold and hot metal detectors are respectively arranged at two sides of the same horizontal position at the inlet of the continuous casting hot conveying roller way, the billet lifting roller way, the converging roller way where the rack cold-loading roller way and the continuous casting hot conveying roller way are intersected, the inlet of the heating furnace and the outlet of the heating furnace, wherein the signals of the pair of laser cold and hot metal detectors arranged at the same position are combined into an in-place detection signal through OR operation;
setting up corresponding billet information queues in a PLC system aiming at each roller way, specifically setting up continuous casting hot-delivery billet information queues for continuous casting hot-delivery roller ways; setting up a rack cold-loading billet information queue for a rack cold-loading roller way; setting a furnace mouth area billet information queue for a roller way to a collecting roller way before an inlet of a heating furnace; setting up a billet information queue of an area in the furnace for a walking beam in the walking type heating furnace; and
and the billet information is moved into or out of the corresponding billet information queue by combining the in-place detection signals at the corresponding positions with the forward and reverse rotation signals of the corresponding roller way, so that the tracking of the billet information under normal or abnormal production conditions is realized.
Further, the step of tracking the billet information under the normal production working condition comprises the following steps:
when an in-place detection signal rising edge signal at the inlet of the continuous casting hot-feeding roller way is received and a forward rotation signal of the continuous casting hot-feeding roller way is 1, billet information of a continuous casting baffle plate is obtained from a continuous casting process, and the billet information is newly added to the tail end of a continuous casting hot-feeding billet information queue; when an in-place detection signal rising edge signal at the collecting roller way is received and a forward rotation signal of the collecting roller way and the hot-feeding roller way is 1, the first piece of billet information of the continuous casting hot-feeding billet information queue is moved out of the queue and moved to the tail end of the queue of the billet information queue in the furnace mouth area;
when receiving the in-place detection signal rising edge signal at the billet lifting roller way, the rack cold-charging billet information queue acquires billet information from the cold-charging feeding procedure and is newly added to the tail end of the queue; when an in-place detection signal rising edge signal at the collecting roller way is received and a forward rotation signal of the collecting roller way and the cold-charging roller way is 1, the first piece of billet information of the rack cold-charging billet information queue is moved out of the queue, and the first piece of billet information is moved to the tail end of the queue of the billet information queue in the furnace mouth area;
when an in-place detection signal rising edge signal at the inlet of the heating furnace is received and a forward rotation signal of a cantilever roller entering the furnace is 1, the first piece of billet information of a billet information queue in a furnace mouth area is moved out of the queue, and the first piece of billet information is moved to the tail end of the queue of the billet information queue in the area in the furnace;
when the rising edge signal of the in-place detection signal at the outlet of the heating furnace is received and the forward rotation signal of the tapping cantilever roller is 1, the first piece of billet information of the billet information queue in the furnace area is removed from the queue, and the first piece of billet information is sent to the subsequent steel rolling process.
Further, the step of tracking the billet information of the abnormal production working condition comprises the following steps:
when an in-place detection signal rising edge signal at the outlet of the heating furnace is received and the reversing signal of the tapping cantilever roller is 1, moving the last billet information of the subsequent steel rolling process to the first billet of the queue of the billet information in the furnace area, sending a tapping reversing signal to the steel rolling PLC system, and informing the steel rolling PLC system to cancel the tapping record of the billet;
when an in-place detection signal rising edge signal at the inlet of the heating furnace is received and the reversing signal of the cantilever roller entering the furnace is 1, the last piece of billet information in the billet information queue of the furnace area is moved out of the queue, and the last piece of billet information in the billet information queue of the furnace area is moved to the first piece of billet information queue of the furnace mouth area;
when an in-place detection signal rising edge signal at the collecting roller way is received and a reversing signal of the collecting roller way and the rack cold-loading roller way is 1, the last steel billet information queue in the furnace mouth area is removed from the queue, and the last steel billet information queue is moved to the first steel billet information queue of the rack cold-loading steel billet information queue;
when the in-place detection signal falling edge signal at the collecting roller way is received and the collecting roller way and the cold-loading roller way have no running signals, the last queue of the billet information queue in the furnace mouth area is removed from the queue, and the billet information is sent to a billet warehouse system.
Further, the laser cold and hot metal detector with the corresponding roller way rotating and the signal of 1 for a long time is judged to be shielded, and the alarm is given and the output signal is forcedly changed into 0.
By adopting the technical scheme, the invention has the beneficial effects that:
1. the steel billet information tracking process is full-automatic, so that the labor cost is saved, and the product quantity errors caused by manual statistics errors are reduced, thereby avoiding influencing the normal operation of enterprises.
2. By carrying out redundant equipment deployment on the same detection point, normal operation can still be continued when one detection equipment fails or is blocked.
3. When the production of the heating furnace is normal and abnormal, the billet tracking information can be ensured to be accurate.
Drawings
For further illustration of the various embodiments, the invention is provided with the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments and together with the description, serve to explain the principles of the embodiments. With reference to these matters, one of ordinary skill in the art will understand other possible embodiments and advantages of the present invention. The components in the figures are not drawn to scale and like reference numerals are generally used to designate like components.
FIG. 1 is a flow chart of a roller way billet information tracking method of a step heating furnace;
FIG. 2 is a schematic deployment diagram of a laser hot and cold metal detector of the present invention.
Detailed Description
It should be noted that the experimental methods described in the following embodiments, unless otherwise specified, are all conventional methods, and the reagents and materials, unless otherwise specified, are all commercially available; in the description of the present application, the terms "transverse," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used for convenience in describing the present invention and simplifying the description, and do not denote or imply that the apparatus or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its 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, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
The invention will now be further described with reference to the drawings and detailed description.
As shown in fig. 1 and 2, a method for tracking roller way billet information of a step heating furnace may include the following steps:
100. a pair of laser cold and hot metal detectors 1 are respectively arranged at the corresponding positions of the roller way. Specifically, a pair of laser cold and hot metal detectors 1 are respectively arranged at two sides of the same horizontal position at the inlet of the continuous casting hot conveying roller way, the billet lifting roller way, the converging roller way where the rack cold-loading roller way and the continuous casting hot conveying roller way are intersected, the inlet of the heating furnace and the outlet of the heating furnace. It should be noted that the purpose of adopting a pair of laser cold and hot metal detectors on two sides of the same detection position is to prevent the problem that a steel billet cannot be identified due to the fact that one side is shielded by an external shielding object, and meanwhile, the problem that the steel billet cannot be identified due to the fact that one laser cold and hot metal detector is damaged can be prevented. In addition, the signals of a pair of laser cold and hot metal detectors arranged at the same position are combined into an in-place detection signal through an OR operation. In addition, the hot metal detector with the corresponding roller way rotating and long-time signal of 1 is judged to be shielded, the alarm is given, and the output signal of the hot metal detector is forcedly changed to 0, so that the subsequent billet recognition process is executed. The laser cold and hot metal detector 1 is commercially available, for example, a KJT series of retro-reflective cold and hot metal detectors, and the specific model may be selected according to actual needs.
200. Setting up corresponding billet information queues in a PLC system aiming at each roller way, specifically setting up continuous casting hot-delivery billet information queues for continuous casting hot-delivery roller ways; setting up a rack cold-loading billet information queue for a rack cold-loading roller way; setting a furnace mouth area billet information queue for a roller way to a collecting roller way before an inlet of a heating furnace; and setting up a billet information queue of the area in the furnace for the walking beam in the walking heating furnace.
300. And the billet information is moved into or out of the corresponding billet information queue by combining the in-place detection signals at the corresponding positions with the forward and reverse rotation signals of the corresponding roller way, so that the tracking of the billet information under normal or abnormal production conditions is realized.
During normal production, all the roller tables rotate positively, and billets are fed into the heating furnace from continuous casting through the hot feed roller tables and the collecting roller tables, or are fed into the heating furnace from the cold loading rack through the cold loading roller tables and the collecting roller tables, so during normal production, the following billet information tracking steps are adopted:
step 1, when an in-place detection signal rising edge signal at an inlet of a continuous casting hot-feeding roller way is received and a forward rotation signal of the continuous casting hot-feeding roller way is 1, billet information of a continuous casting baffle plate is obtained from a continuous casting process, and the billet information is newly added to the tail end of a continuous casting hot-feeding billet information queue; when an in-place detection signal rising edge signal at the collecting roller way is received and a forward rotation signal of the collecting roller way and the hot-feeding roller way is 1, the first piece of billet information of the continuous casting hot-feeding billet information queue is moved out of the queue and moved to the tail end of the queue of the billet information queue in the furnace mouth area; when receiving the in-place detection signal rising edge signal at the billet lifting roller way, the rack cold-charging billet information queue acquires billet information from the cold-charging feeding procedure and is newly added to the tail end of the queue; when the in-place detection signal rising edge signal at the collecting roller way is received and the forward rotation signals of the collecting roller way and the cold-charging roller way are 1, the first piece of billet information of the rack cold-charging billet information queue is moved out of the queue, and the first piece of billet information is moved to the tail end of the queue of the billet information queue in the furnace mouth area. Namely, the continuous casting hot-feeding roller way and billet information tracking on the bench cold-feeding roller way before the collecting roller way where the bench cold-feeding roller way and the continuous casting hot-feeding roller way meet adopt a double-queue information tracking method, so that billet information on two roller ways (the continuous casting hot-feeding roller way and the cold-feeding roller way) is ensured not to be interfered by other detection error signals on the roller ways.
And 2, when an in-place detection signal rising edge signal at the inlet of the heating furnace is received and a forward rotation signal of the furnace inlet cantilever roller is 1, removing the first piece of billet information of the furnace mouth region billet information queue head from the queue, and moving to the end of the queue of the furnace inner region billet information queue. The method is characterized in that a single queue information tracking method is adopted for tracking billet information from a roller way before an inlet of a heating furnace to a collecting roller way, so that billet information on the range of the roller way is ensured not to be interfered by other detection error signals on the roller way.
And step 3, when an in-place detection signal rising edge signal at the outlet of the heating furnace is received and a forward rotation signal of the tapping cantilever roller is 1, the first piece of billet information of the billet information queue of the area in the furnace is removed from the queue, and the first piece of billet information is sent to a subsequent steel rolling process. That is, the single queue information tracking method is adopted for tracking the billet information on the walking beam in the walking type heating furnace, so that the billet information in the furnace is ensured not to be interfered by the forward or backward error signal of the walking beam.
The three steps are used for realizing the forward tracking of the full flow information of the billet from the cold loading bench and the continuous casting process, and the billet is sent to the subsequent steel rolling process after the information tracking of the roller way and the heating furnace.
Besides the forward tracking of normal production conditions, due to the quality problems of the steel billets (such as bent billets and split billets), the steel billets can be moved back to a steel billet lifting roller way through the reverse rotation of each roller way and the stepping and retreating operation of a heating furnace walking beam, and lifted by a crown block; or the tapping temperature of the heating furnace does not meet the requirement of the subsequent steel rolling process, and the steel is returned to the heating furnace from the outside of the furnace again to continue heating. And under the abnormal production working condition, adopting the following steel billet information tracking steps:
and 1, when an in-place detection signal rising edge signal at the outlet of the heating furnace is received and the reversing signal of the tapping cantilever roller is 1, moving the last billet information of the subsequent steel rolling process to the first billet of the queue of the billet information in the area in the furnace, sending a tapping reverse loading signal to the steel rolling PLC system, and informing the steel rolling PLC system of withdrawing the tapping record of the billet.
And 2, when a rising edge signal of an in-place detection signal at the inlet of the heating furnace is received and a reversing signal of the cantilever roller entering the furnace is 1, the last billet information of the queue is removed from the queue, and the last billet information is moved to the first queue of the 'furnace mouth area billet information queue'.
And 3, because the rack cold-loading roller way and the roller way of the furnace mouth area are straight and are aligned, the billet in the furnace mouth area can only be retracted onto the rack cold-loading roller way when retracted. When the rising edge signal of the in-place detection signal at the collecting roller way is received and the reversing signal of the cold-loading roller way of the collecting roller way is 1, the last queue of the billet information queue in the furnace mouth area is removed from the queue, and the last queue is moved to the first queue of the cold-loading billet information queue of the rack.
And 4, a billet lifting roller way, namely a landing roller way of a rack tilting machine, is a first section of a cold-loading roller way, and the corresponding billet is the last billet of a rack cold-loading billet information queue. When the in-place detection signal falling edge signal at the collecting roller way and the no-operation signal of the collecting roller way and the cold-loading roller way are received, the billet is judged to be lifted by the crown block, the last billet in the billet information queue in the furnace mouth area is removed from the queue, and the billet information is sent to a billet warehouse system of the crown block logistics.
Compared with the prior art, the invention has the following main advantages:
1. the steel billet information tracking process is full-automatic, so that the labor cost is saved, and the product quantity errors caused by manual statistics errors are reduced, thereby avoiding influencing the normal operation of enterprises.
2. By carrying out redundant equipment deployment on the same detection point, normal operation can still be continued when one detection equipment fails or is blocked.
3. When the production of the heating furnace is normal and abnormal, the billet tracking information can be ensured to be accurate.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (2)
1. The roller way billet information tracking method of the step heating furnace is characterized by comprising the following steps of:
a pair of laser cold and hot metal detectors are respectively arranged at the inlet of the continuous casting hot conveying roller way, the billet lifting roller way, the converging roller way where the rack cold-loading roller way and the continuous casting hot conveying roller way meet, the inlet of the heating furnace and the two sides of the same horizontal position at the outlet of the heating furnace, and are electrically connected with a PLC system, wherein signals of the pair of laser cold and hot metal detectors arranged at the same position are combined into one in-place detection signal through OR operation, and the rack cold-loading roller way and the roller way of the furnace mouth area are aligned so as to enable billets in the furnace mouth area to fall back to the rack cold-loading roller way;
setting up corresponding billet information queues in a PLC system aiming at each roller way, specifically setting up continuous casting hot-delivery billet information queues for continuous casting hot-delivery roller ways; setting up a rack cold-loading billet information queue for a rack cold-loading roller way; setting a furnace mouth area billet information queue for a roller way to a collecting roller way before an inlet of a heating furnace; setting up a billet information queue of an area in the furnace for a walking beam in the walking type heating furnace; and
the billet information is moved into or out of the corresponding billet information queue by combining the in-place detection signals at the corresponding positions with the forward and reverse rotation signals of the corresponding roller way, so that the tracking of the billet information under normal or abnormal production conditions is realized; the step of tracking the billet information under abnormal production conditions comprises the following steps:
when an in-place detection signal rising edge signal at the outlet of the heating furnace is received and the reversing signal of the tapping cantilever roller is 1, moving the last billet information of the subsequent steel rolling process to the first billet of the queue of the billet information in the furnace area, sending a tapping reversing signal to the steel rolling PLC system, and informing the steel rolling PLC system to cancel the tapping record of the billet;
when an in-place detection signal rising edge signal at the inlet of the heating furnace is received and the reversing signal of the cantilever roller entering the furnace is 1, the last piece of billet information in the billet information queue of the furnace area is moved out of the queue, and the last piece of billet information in the billet information queue of the furnace area is moved to the first piece of billet information queue of the furnace mouth area;
when an in-place detection signal rising edge signal at the collecting roller way is received and a reversing signal of the collecting roller way and the rack cold-loading roller way is 1, the last steel billet information queue in the furnace mouth area is removed from the queue, and the last steel billet information queue is moved to the first steel billet information queue of the rack cold-loading steel billet information queue;
when an in-place detection signal falling edge signal at the collecting roller way is received and the collecting roller way and the cold-charging roller way have no operation signal, the last queue of the billet information queue in the furnace mouth area is removed from the queue, and the billet information is sent to a billet warehouse system;
the method further comprises the steps of: and judging that the laser cold and hot metal detector with the corresponding roller way rotates and the signal is 1 for a long time is shielded, alarming and forcedly changing the output signal of the laser cold and hot metal detector into 0.
2. The method for tracking billet information on a roller way of a step heating furnace according to claim 1, wherein the step of tracking billet information on a normal production condition comprises the steps of:
when an in-place detection signal rising edge signal at the inlet of the continuous casting hot-feeding roller way is received and a forward rotation signal of the continuous casting hot-feeding roller way is 1, billet information of a continuous casting baffle plate is obtained from a continuous casting process, and the billet information is newly added to the tail end of a continuous casting hot-feeding billet information queue; when an in-place detection signal rising edge signal at the collecting roller way is received and a forward rotation signal of the collecting roller way and the hot-feeding roller way is 1, the first piece of billet information of the continuous casting hot-feeding billet information queue is moved out of the queue and moved to the tail end of the queue of the billet information queue in the furnace mouth area;
when receiving the in-place detection signal rising edge signal at the billet lifting roller way, the rack cold-charging billet information queue acquires billet information from the cold-charging feeding procedure and is newly added to the tail end of the queue; when an in-place detection signal rising edge signal at the collecting roller way is received and a forward rotation signal of the collecting roller way and the cold-charging roller way is 1, the first piece of billet information of the rack cold-charging billet information queue is moved out of the queue, and the first piece of billet information is moved to the tail end of the queue of the billet information queue in the furnace mouth area;
when an in-place detection signal rising edge signal at the inlet of the heating furnace is received and a forward rotation signal of a cantilever roller entering the furnace is 1, the first piece of billet information of a billet information queue in a furnace mouth area is moved out of the queue, and the first piece of billet information is moved to the tail end of the queue of the billet information queue in the area in the furnace;
when the rising edge signal of the in-place detection signal at the outlet of the heating furnace is received and the forward rotation signal of the tapping cantilever roller is 1, the first piece of billet information of the billet information queue in the furnace area is removed from the queue, and the first piece of billet information is sent to the subsequent steel rolling process.
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| JPH08164407A (en) * | 1994-12-15 | 1996-06-25 | Nippon Steel Corp | System for preventing difference in material of billet from being caused |
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