CN117443951A - Method for monitoring running of high-speed wire rod tapping roller way billet - Google Patents
Method for monitoring running of high-speed wire rod tapping roller way billet Download PDFInfo
- Publication number
- CN117443951A CN117443951A CN202311251785.5A CN202311251785A CN117443951A CN 117443951 A CN117443951 A CN 117443951A CN 202311251785 A CN202311251785 A CN 202311251785A CN 117443951 A CN117443951 A CN 117443951A
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- billet
- hot metal
- metal detector
- roller way
- tapping roller
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- 238000010079 rubber tapping Methods 0.000 title claims abstract description 68
- 238000012544 monitoring process Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 83
- 229910052751 metal Inorganic materials 0.000 claims abstract description 83
- 238000005096 rolling process Methods 0.000 claims abstract description 34
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 33
- 239000010959 steel Substances 0.000 claims abstract description 33
- 238000010438 heat treatment Methods 0.000 claims description 25
- 230000002159 abnormal effect Effects 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000012790 confirmation Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a high-speed wire rod tapping roller way billet operation monitoring method, which is based on a high-speed wire rod tapping roller way billet operation monitoring system, and comprises the following steps: s1, starting from the moment when a hot metal detector A detects a billet; then: standard time T for detecting billet by hot metal detector A 2 =0; standard time T for detecting front end of billet by hot metal detector B 1 ＝(l 4 ‑l 3 ) V; standard time T for the tail end of billet to pass through hot metal detector B 3 ＝(l 4 +l 2 ‑l 3 ) V; s2, starting a tapping roller way, and acquiring real-time t of detecting a billet by a hot metal detector B in operation 1 Real time t of detecting the passage of the tail end of the billet by the hot metal detector A 2 And the real time t of the tail end of the billet passing through the hot metal detector B 3 The method comprises the steps of carrying out a first treatment on the surface of the If t 1 ＞T 1 +2s、t 2 ＞T 2 +2s or t 2 ＞T 3 And if the temperature is +2s, judging that the billet runs abnormally on the tapping roller way. The method solves the problems that the prior art cannot timely find out that the billet runs abnormally on the tapping roller way and rough rolling of the scrap steel is easy to occur.
Description
[ field of technology ]
The invention belongs to the technical field of billet roller way monitoring, and particularly relates to a high-speed wire rod tapping roller way billet operation monitoring method.
[ background Art ]
In the steelmaking process, a discharging roller way is arranged between the heating furnace and the first rolling mill of the rolling line, and the discharging roller way comprises a high-pressure water dephosphorization system for cleaning iron scales generated in the heating process of the billet in the heating furnace. After the billet is discharged from the furnace, the temperature of the billet entering a rolling mill is determined by the time of the discharge roller way, the running time of the billet on the discharge roller way cannot be accurately judged in the prior art, running abnormality cannot be found in time, and the running of the roller way cannot be stopped in time. Because of the existence of the high-pressure water treatment system, if the operation of the steel billet is abnormal, uncontrollable abnormal cooling can be caused to the discharged steel billet by the position of the steel billet when the steel billet is stopped on the discharging roller way, and rough rolling scrap steel can be caused, so that normal production of a rolling line is seriously influenced.
[ invention ]
The invention aims to provide a method for monitoring the billet operation of a high-speed wire tapping roller way, which aims to solve the problems that the prior art cannot timely find out the abnormal operation of billets on the tapping roller way and rough rolling of scrap steel is easy to occur.
The invention adopts the following technical scheme: a high-speed wire rod tapping roller way billet operation monitoring method is based on a high-speed wire rod tapping roller way billet operation monitoring system, comprising:
a hot metal detector A is arranged on the tapping roller way and close to the billet heating furnace, and a hot metal detector B is arranged on the tapping roller way and far from the billet heating furnace;
the operation monitoring method comprises the following steps:
s1, setting a billet to be taken out of the furnace, and taking the moment when the hot metal detector A detects the billet as a starting point; then:
standard time for hot metal detector a to detect billet: t (T) 2 ＝0；
Standard time for hot metal detector B to detect the front end of billet: t (T) 1 ＝(l 4 -l 3 )/v；
Standard time for the billet tail end to pass through the hot metal detector B: t (T) 3 ＝(l 4 +l 2 -l 3 )/v；
Wherein the total length of the tapping roller way is l 1 The total length of the billet is l 2 The linear velocity of the steel billet is v, and the distance between the hot metal detector A and the steel billet heating furnace is l 3 The distance between the hot metal detector B and the billet heating furnace is l 4 ；
S2, starting a tapping roller way, tapping billets, and running the billets to a first rolling mill of a rolling line through the tapping roller way; in operation, respectively acquiring real-time t of detecting billet by hot metal detector B 1 Real time t of detecting the passage of the tail end of the billet by the hot metal detector A 2 And the real time t of the tail end of the billet passing through the hot metal detector B 3 ；
If t 1 ＞T 1 +2s、t 2 ＞T 2 +2s or t 2 ＞T 3 And when +2s, judging that the billet runs abnormally on the tapping roller way, and controlling the tapping roller way to stop.
Further, the hot metal detector A is arranged at a position 0.5m away from the furnace door opening of the heating furnace, the distance between the hot metal detector B and the rolling line head rolling mill is smaller than the total length of the billet, and the distance between the hot metal detector B and the hot metal detector A is l 5 L is 2 -l 5 ＝100～500mm。
The beneficial effects of the invention are as follows: according to the invention, through monitoring the process of passing through the tapping roller way, abnormal conditions possibly occurring in the process are found in time, and the tapping roller way is controlled to stop automatically in time, so that rough rolling scrap steel caused by the reasons is prevented, the rolling line operation rate is improved, and a rolling line control console is reminded of confirmation and treatment after stopping; and the temperature condition of the steel billet is judged by monitoring the time of the steel billet passing through the tapping roller way, so that the normal operation of the equipment is ensured.
[ description of the drawings ]
FIG. 1 is a schematic diagram of a high-speed wire tapping roller bed billet operation monitoring system of the present invention;
fig. 2 is a flow chart of a method for monitoring the billet operation of a high-speed wire tapping roller way.
The high-pressure water dephosphorization system comprises a billet heating furnace 1, a tapping roller way 2, a hot metal detector A, a hot metal detector B4, a billet 5, a rolling line head rolling mill 6 and a high-pressure water dephosphorization system 7.
[ detailed description ] of the invention
The invention will be described in detail below with reference to the drawings and the detailed description.
The invention provides a method for monitoring the operation of a billet in a high-speed wire tapping roller way, which is shown in figure 1, and is based on a high-speed wire tapping roller way billet operation monitoring system, and comprises the following steps:
a hot metal detector A3 is arranged on the tapping roller way 2 and close to the billet heating furnace 1, and a hot metal detector B4 is arranged on the tapping roller way 2 and far away from the billet heating furnace 1; a high-pressure water dephosphorization system 7 is arranged above the tapping roller way 2 and positioned between the hot metal detector A3 and the hot metal detector B4;
the operation monitoring method comprises the following steps:
s1, setting the moment when the hot metal detector A3 detects the billet 5 as the starting point after the billet 5 is discharged from the furnace; then:
standard time for hot metal detector A3 to detect billet 5: t (T) 2 ＝0；
Standard time for hot metal detector B4 to detect the front end of billet 5: t (T) 1 ＝l 4 -l 3 /v；
Standard time for the tail end of billet 5 to pass through hot metal detector B4: t (T) 3 ＝l 4 +l 2 -l 3 /v；
Wherein the length of the tapping roller way 2 is l 1 The total length of the billet 5 is l 2 The linear velocity of the billet 5 is v, and the distance between the hot metal detector A3 and the billet heating furnace 1 is l 3 The distance between the hot metal detector B4 and the billet heating furnace 1 is l 4 ；
S2, starting a tapping roller way 2, tapping billets 5, and running the billets to a rolling line head rolling mill 6 through the tapping roller way 2; during operation, respectively obtaining:
real time t of detection of the front end of billet 5 by hot metal detector B4 1 Real time t of the hot metal detector A3 detecting the passage of the tail end of the billet 5 2 And the tail end of the steel billet 5 passes through hot metalReal time t of detector B4 3 ；
If t 1 ＞T 1 +2s、t 2 ＞T 2 +2s or t 2 ＞T 3 When +2s, judging that the billet 5 runs abnormally on the tapping roller way 2, and controlling the tapping roller way 2 to stop;
if t 1 ≤T 1 +2s、t 2 ≤T 2 +2s or t 2 ≤T 3 And if +2s, judging that the billet 5 is normally operated on the tapping roller way 2.
The invention relates to a method for monitoring the running of a billet in a high-speed wire tapping roller way, which can automatically read the speed of the roller way, automatically calculate the time of each stage of the billet 5 passing through the tapping roller way 2 by combining the information such as the length of the roller way, the relative position of a hot metal detector and the like, and particularly calculate the real-time t as described above 1 、t 2 And t 3 . The determination of the running condition of the tapping roller bed 2 is performed by the time condition of the billet 5 running on the tapping roller bed 2 to each stage.
Specifically, after the billet is discharged from the furnace, after the hot metal detector A3 detects the billet 5,
a: set time t 1 The internal heat metal detector B3 does not detect the billet 5;
b: set time t 2 The tail end of the inner billet 5 does not pass through the hot metal detector A3;
c: set time t 3 The tail end of the inner billet 5 does not pass through the hot metal detector B4;
the three conditions are judged to be abnormal in the operation of the billet in the tapping roller way, the roller way is controlled to stop, and the forward rotation is forbidden; meanwhile, an alarm is given on a picture of a main operation table of the rolling line, a person is reminded of on-site confirmation, and production shutdown or equipment damage caused by abnormal cooling of the steel billet is prevented. When the on-site personnel confirms that the billet can continue rolling, the normal operation of the tapping roller way is restored by pressing a 'tapping hot steel overtime reset' button arranged on the main picture of the operating platform.
In some embodiments, the hot metal detector A3 is installed at a distance of 0.5m from the furnace door opening of the heating furnace 1, the distance between the hot metal detector B4 and the rolling line head rolling mill 6 is smaller than the total length of the billet 5, and the hot metal detector B4 and the hot metal detectorThe distance between the devices A3 is l 5 L is 2 -l 5 ＝100～500mm。
In order to accurately detect the tapping position of the billet, the high-temperature billet 5 in the heating furnace is prevented from interfering with the output signal of the tapping hot metal detector A3, and the hot metal detector A is arranged at the position of 0.5m of the furnace door. In order for the hot metal detector B4 to continuously detect the billet 5 signal until the billet 5 normally bites into the line head rolling mill 6, the distance between the hot metal detector B4 and the line head rolling mill 6 should be less than the total length of the billet 5. Meanwhile, the distance between the hot metal detector B4 and the hot metal detector A3 is slightly smaller than the length of the steel billet 5, and the purpose is that the hot metal detector A3 and the hot metal detector B4 can detect the position of the steel billet 5 at the same time, so that the running state of the steel billet 5 on the tapping roller way 2 can be detected more accurately.
Examples
The high-pressure water dephosphorization system 7 is positioned on the tapping roller way 2 at a position which is about 3 meters away from the outlet of the billet heating furnace 1, 2 hot metal detectors are respectively arranged at a position of 0.5 meter away from the outlet of the heating furnace and a position of 10.3 meters away from the outlet, and an automatic program calculates the time of passing through the hot metal detector A3 and the hot metal detector B4 when the billet 5 normally passes through the tapping roller way 2 according to different linear speeds, and monitors three different stages of running of the billet 5 in the tapping roller way 2 through judging the time.
Full length l of tapping roller way 1 =19.7 meters, full length of billet l 2 10.5m, billet linear velocity v=1.5 m/s, distance l between hot metal detector a and billet heating furnace 3 Distance l between hot metal detector B and billet heating furnace =0.5m 4 =10.3m; the metal detector A is arranged at the position of 0.5m of the furnace door opening, and the design distance between the thermal metal detectors A and B is 10.3m; distance l between high-pressure water dephosphorization system and billet heating furnace 1 5 =3m, then:
standard time for hot metal detector A3 to detect the front end of billet 5: t (T) 2 ＝0；
Standard time for hot metal detector B4 to detect the front end of billet 5: t (T) 1 ＝l 4 -l 3 /v＝6.53s；
Billet steelStandard time for tail end 5 to pass hot metal detector B4: t (T) 3 ＝l 4 +l 2 -l 3 /v＝13.5s；
After the above standard time is obtained, the operation of the billet 5 is divided into three stages:
the first stage: taking the moment when the hot metal detector A3 monitors the steel billet 5 after the steel billet is discharged from the furnace as a starting point, and after about 2 seconds, the front end of the steel billet reaches the hot metal detector B4 within 7,8.53 seconds when reaching the high-pressure water dephosphorization system;
and a second stage: the hot metal detector A3 detects the steel billet 5 within 8.6 seconds, and the steel billet 5 completely passes through the high-pressure water dephosphorization system 7;
and a third stage: within 13.3 seconds after the hot metal detector A3 detects the billet 5, the billet 5 is bitten into the line head rolling mill 6, and within 15.5 seconds, the billet 5 is completely passed through the hot metal detector B4.
The three stages are monitored in actual operation, if the steel billet is not detected after the time of any one of the three stages is overtime, the abnormal operation of the steel billet on the tapping roller way is judged, the roller way is immediately controlled to stop, and the forward rotation is forbidden; meanwhile, an alarm is given on a picture of a main operation table of the rolling line, a person is reminded of on-site confirmation, and production shutdown or equipment damage caused by abnormal cooling of the steel billet is prevented. When the on-site personnel confirms that the billet can continue rolling, the normal operation of the tapping roller way is restored by pressing a 'tapping hot steel overtime reset' button arranged on the main picture of the operating platform.
According to the invention, through monitoring the process of passing through the tapping roller way, abnormal conditions possibly occurring in the process are found in time, and the tapping roller way is controlled to stop automatically in time, so that rough rolling scrap steel caused by the reasons is prevented, the rolling line operation rate is improved, and a rolling line control console is reminded of confirmation and treatment after stopping; and the temperature condition of the steel billet is judged by monitoring the time of the steel billet passing through the tapping roller way, so that the normal operation of the equipment is ensured.
Claims (2)
1. The method for monitoring the operation of the billet of the high-speed wire tapping roller way is characterized by comprising the following steps of:
a hot metal detector A (3) is arranged on the tapping roller way (2) and close to the billet heating furnace (1), and a hot metal detector B (4) is arranged on the tapping roller way (2) and far from the billet heating furnace (1);
the operation monitoring method comprises the following steps:
s1, setting the moment when the hot metal detector A (3) monitors the billet (5) as the starting point after the billet (5) is discharged from the furnace; then:
standard time for the hot metal detector a (3) to detect the billet (5): t (T) 2 ＝0；
Standard time for the hot metal detector B (4) to detect the front end of the billet (5): t (T) 1 ＝(l 4 -l 3 )/v；
Standard time for the tail end of the billet (5) to pass through the hot metal detector B (4): t (T) 3 ＝(l 4 +l 2 -l 3 )/v；
Wherein the total length of the tapping roller way (2) is l 1 The total length of the billet (5) is l 2 The linear velocity of the steel billet (5) is v, and the distance between the hot metal detector A (3) and the steel billet heating furnace (1) is l 3 The distance between the hot metal detector B (4) and the billet heating furnace (1) is l 4 ；
S2, starting the tapping roller way (2), tapping the steel billet (5) and running to a rolling line head rolling mill (6) through the tapping roller way (2); in operation, the real time t of the hot metal detector B (4) for detecting the billet (5) is respectively acquired 1 The real-time t of the hot metal detector A (3) detecting the passing of the tail end of the billet (5) 2 And the real time t of the tail end of the billet (5) passing through the hot metal detector B (4) 3 ；
If t 1 ＞T 1 +2s、t 2 ＞T 2 +2s or t 2 ＞T 3 And when +2s, judging that the billet (5) runs abnormally on the tapping roller way (2), and controlling the tapping roller way (2) to stop.
2. A high speed wire tapping roller way billet operation monitor as claimed in claim 1The method is characterized in that the hot metal detector A (3) is arranged at a position 0.5m away from a furnace door opening of the heating furnace (1), the distance between the hot metal detector B (4) and a rolling line head frame rolling mill (6) is smaller than the total length of a billet (5), and the distance between the hot metal detector B (4) and the hot metal detector A (3) is l 5 L is 2 -l 5 ＝100～500mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311251785.5A CN117443951A (en) | 2023-09-26 | 2023-09-26 | Method for monitoring running of high-speed wire rod tapping roller way billet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311251785.5A CN117443951A (en) | 2023-09-26 | 2023-09-26 | Method for monitoring running of high-speed wire rod tapping roller way billet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117443951A true CN117443951A (en) | 2024-01-26 |
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ID=89591893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311251785.5A Pending CN117443951A (en) | 2023-09-26 | 2023-09-26 | Method for monitoring running of high-speed wire rod tapping roller way billet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117443951A (en) |
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2023
- 2023-09-26 CN CN202311251785.5A patent/CN117443951A/en active Pending
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