CN115488306A - Method for dividing heat of billet continuous casting machine on line - Google Patents
Method for dividing heat of billet continuous casting machine on line Download PDFInfo
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- CN115488306A CN115488306A CN202211183819.7A CN202211183819A CN115488306A CN 115488306 A CN115488306 A CN 115488306A CN 202211183819 A CN202211183819 A CN 202211183819A CN 115488306 A CN115488306 A CN 115488306A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/163—Controlling or regulating processes or operations for cutting cast stock
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Abstract
The invention relates to a method for dividing the heat number of a billet continuous casting machine on line, which belongs to the technical field of steelmaking continuous casting and comprises the following steps: monitoring the ladle casting time in real time, marking the length of a casting blank between the distance from the lower opening of a crystallizer of a continuous casting machine to the original point of a cutting gun, calculating the cutting count of the furnace steel by using a counter, resetting the counter in time after the furnace steel is cut, and tracking the positions and the number of hot blanks in the conveying process of a conveying roller way, a discharging roller way and a cooling bed by a control system in real time; when the control system monitors the fault of the cooling bed, the counter prompts the current blank marking information and transmits the blank marking information to a furnace number marking area in real time, a furnace number worker timely adjusts away hot blanks on the fault cooling bed according to the information fed back by the counter, and corrects the number of the residual casting blanks and the furnace number identification; when the fault of the number spraying machine is monitored, furnace number identification is carried out manually. The method improves the billet cutting accuracy of the upper and lower furnace steels of the continuous casting machine, and reduces the outflow of defective products caused by wrong billet cutting.
Description
Technical Field
The invention belongs to the technical field of steelmaking and continuous casting, and relates to a method for dividing the heat of a square billet continuous casting machine on line.
Background
In the prior art, an L2 process control system for steelmaking continuous casting calculates the casting length of each flow by collecting the ladle casting time and the casting weight and combining the withdrawal length of a withdrawal and straightening machine. The precision of the rotary table metering equipment for casting and weighing is not high, and the deviation between the casting quantity and the actual cutting quantity is easy to be overlarge.
In addition, if the cooling bed fails after the casting blank is cut, the hot blank information cannot be timely marked, the furnace number of the hot blank which is forced to be hung away cannot be identified, and the blank marking of the subsequent furnace number is also influenced, so that the outflow of defective products with wrong blank marking is easily caused.
In addition, when the number spraying machine breaks down, the furnace number cannot be identified, and if manual intervention is not timely, the problems of mixed furnace and mixed steel can be caused.
Disclosure of Invention
In view of the above, the present invention provides a method for dividing a billet caster into furnace times on line, so as to improve the accuracy of the billet cutting of the upper and lower furnaces of the caster.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for dividing the heat of a billet continuous casting machine on line comprises the following steps: and monitoring the ladle casting time in real time, marking the length of the casting blank between the distance from the lower opening of the crystallizer of the continuous casting machine to the original point of the cutting gun, calculating the cutting count of the furnace steel by using a counter, and resetting the counter after the furnace steel is cut.
Optionally, the control system tracks the positions of the hot blanks in the conveying roller way, the blank discharging roller way and the cold bed conveying process in real time; when the control system monitors that the cooling bed has a fault, the counter prompts current blank marking information including the number of hot blanks on the conveying roller way, the discharging roller way and the cooling bed, the current blank marking information is transmitted to the furnace number marking area in real time, a furnace number worker timely adjusts away the hot blanks on the fault cooling bed according to the current blank marking information fed back by the counter, and the number of the residual casting blanks and the furnace number identification are corrected.
Optionally, when the control system monitors that the number spraying machine fails, the counter directly transmits the current blank marking information to the furnace number marking area, and furnace number identification is manually performed.
Optionally, furnace number division is performed on a casting blank which has both front furnace molten steel and rear furnace molten steel according to the principle of 'more amount of molten steel returning to the furnace'.
The invention has the beneficial effects that: the cutting counts are recorded on line according to the casting time and the cutting counter, so that the blank marking accuracy of the upper and lower furnace steels of the continuous casting machine is improved; under the abnormal condition, the number of the residual casting blanks and the furnace number identification are corrected by using the actual hot blank hanging number, the whole-process fixed-number tracking of the cut casting blanks is realized, the mixed furnace and steel mixing condition caused by blank marking errors of an upper furnace and a lower furnace caused by the faults of a cooling bed or a number spraying machine can be avoided, and the outflow of defective products caused by blank marking errors is reduced.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims thereof.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic view of the furnace time on-line dividing method of the billet continuous casting machine of the invention.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Referring to fig. 1, a method for dividing a billet caster into a plurality of furnaces on line includes the following steps:
s1, a cutting person or a control system monitors the ladle casting-on time in real time, marks the length of a casting blank between the distance from the lower opening of a crystallizer of a continuous casting machine to the original point of a cutting gun, calculates the cutting count of the furnace steel by using a counter, and resets the counter in time after the furnace steel is cut;
s2, the control system tracks the positions and the quantity of the hot blanks in the conveying process of the conveying roller way, the discharging roller way and the cooling bed in real time;
s3, when the control system monitors that the cooling bed is in fault, a counter prompts current blank marking information, the current blank marking information comprises the number of hot blanks on a conveying roller way, a blank discharging roller way and the cooling bed respectively, the current blank marking information is transmitted to a furnace number marking area in real time, a furnace number worker timely adjusts away the hot blanks on the fault cooling bed according to the current blank marking information fed back by the counter, and the number of the residual casting blanks and the furnace number identification are corrected; when the control system monitors that the number spraying machine has a fault, the counter directly transmits the current blank marking information to a furnace number marking area, and furnace number identification is carried out manually.
Because of multi-furnace continuous casting, there are casting blanks (connection blanks) with front furnace molten steel and back furnace molten steel, and furnace number division is carried out according to the principle of 'amount more than furnace returning'.
Example 1
HRB400E deformed steel bar with the specification of (170 multiplied by 170) mm is produced 2 And the fault of the cooling bed and the casting quantity of 74.783t are calculated theoretically, the cutting quantity is 27.697, the actual blank cutting result of the L2 system is 30, and the improved online blank cutting result is 28, so that the requirement is met.
Example 2
HRB400E deformed steel bar is produced, and the specification is (170 multiplied by 170) mm 2 The number spraying machine has faults, the casting quantity is 76.557t, the theoretical calculation cutting quantity is 28.354, the actual L2 system blank marking result is 30, and the improved online blank marking result is 28, so that the requirements are met.
Example 3
HRB400E deformed steel bar is produced, and the specification is (170 multiplied by 170) mm 2 The number spraying machine fault and the casting quantity are 69.524t, the theoretical calculation cutting quantity is 25.749 counts, the actual L2 system blank cutting result is 24 counts, and the improved online blank cutting result is 26 counts, so that the requirement is met.
According to the method, the cutting counts are recorded on line according to the casting time and the cutting counter, so that the blank marking accuracy of the steel of the upper furnace and the lower furnace of the continuous casting machine is improved; under the abnormal condition, the residual casting blank quantity and the furnace number identification are corrected by using the actual hot blank hanging quantity, the whole-process fixed-support tracking of the cut casting blank is realized, the condition of mixed furnace and mixed steel caused by the fact that the blanks are wrongly drawn by the upper furnace and the lower furnace when a cooling bed fault or a number spraying machine fault is caused can be avoided, the outflow of defective products caused by the fact that the blanks are wrongly drawn is reduced, and the requirement of furnace time division fixed-support management is met.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (4)
1. The method for dividing the heat of the billet continuous casting machine on line is characterized by comprising the following steps: the method comprises the following steps: and monitoring the ladle casting time in real time, marking the length of the casting blank between the distance from the lower opening of the crystallizer of the continuous casting machine to the original point of the cutting gun, calculating the cutting count of the furnace steel by using a counter, and resetting the counter after the furnace steel is cut.
2. The method for dividing the heat of the billet continuous casting machine on line according to claim 1, characterized by comprising the following steps: the control system tracks the positions of the hot blanks in the conveying roller way, the blank discharging roller way and the cold bed conveying process in real time; when the control system monitors the fault of the cooling bed, the counter prompts current blank cutting information including the number of hot blanks on a conveying roller way, a discharging roller way and the cooling bed, the current blank cutting information is transmitted to a furnace number marking area in real time, a furnace number worker timely adjusts away the hot blanks on the fault cooling bed according to the current blank cutting information fed back by the counter, and the number of the residual casting blanks and the furnace number identification are corrected.
3. The method for dividing the heat of the billet continuous casting machine on line according to claim 2, characterized by comprising the following steps: when the control system monitors that the number spraying machine has a fault, the counter directly transmits the current blank marking information to a furnace number marking area, and furnace number identification is carried out manually.
4. The method for dividing the heat of the billet continuous casting machine on line according to claim 1, characterized by comprising the following steps: and dividing the furnace number of the casting blank which has both front furnace molten steel and rear furnace molten steel according to the principle of 'more amount of molten steel returning to the furnace'.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211183819.7A CN115488306A (en) | 2022-09-27 | 2022-09-27 | Method for dividing heat of billet continuous casting machine on line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211183819.7A CN115488306A (en) | 2022-09-27 | 2022-09-27 | Method for dividing heat of billet continuous casting machine on line |
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| CN115488306A true CN115488306A (en) | 2022-12-20 |
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| CN202211183819.7A Pending CN115488306A (en) | 2022-09-27 | 2022-09-27 | Method for dividing heat of billet continuous casting machine on line |
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- 2022-09-27 CN CN202211183819.7A patent/CN115488306A/en active Pending
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