CN106111706A - A kind of hot rolling roller-way fragment delay parking method - Google Patents
A kind of hot rolling roller-way fragment delay parking method Download PDFInfo
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- CN106111706A CN106111706A CN201610451393.7A CN201610451393A CN106111706A CN 106111706 A CN106111706 A CN 106111706A CN 201610451393 A CN201610451393 A CN 201610451393A CN 106111706 A CN106111706 A CN 106111706A
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000005098 hot rolling Methods 0.000 title claims abstract description 28
- 239000012634 fragment Substances 0.000 title abstract 2
- 239000010959 steel Substances 0.000 claims abstract description 126
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 123
- 230000003111 delayed effect Effects 0.000 claims abstract description 24
- 238000001514 detection method Methods 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000005096 rolling process Methods 0.000 claims description 14
- 230000003247 decreasing effect Effects 0.000 claims description 7
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- 238000004891 communication Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
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- 230000002159 abnormal effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
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- 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
- B21B37/005—Control of time interval or spacing between workpieces
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- 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
- B21B2037/002—Mass flow control
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Abstract
The invention provides a kind of hot rolling roller-way fragment delay parking method, for including flying shear, finishing mill, coiling machine and the hot rolling line of the rollgang between finishing mill and coiling machine, rollgang includes G1～Gn, during coiling machine jerk, if finishing mill throws steel, rollgang G1～GnAll stop immediately；If during coiling machine jerk, steel do not thrown by finishing mill, uses roller-way G9～GnInstant parking, roller-way G1And G2Parking, roller-way G after steel thrown by finishing mill3～G8The method of delayed shutdown, makes steel scrap be stacked in G3To G8On roller-way, both protected working roll and the equipment in rack of finishing mill exit of finishing mill, and reduced again roll change and process the time needed for steel scrap.
Description
Technical Field
The invention relates to the technical field of hot rolling equipment, in particular to a segmented delayed shutdown method for a hot rolling roller way.
Background
In a hot rolling production line, a G roller way is positioned behind an outlet of a finishing mill and in front of a coiler and is responsible for conveying strip steel rolled by the finishing mill to the coiler, belonging to A-type key equipment. In actual hot rolling production, if abnormal emergency stop occurs in recoiling equipment, because the coiling main speed stops, the G roller way can also stop along with the recoiling machine, if the finishing mill does not stop, waste steel can be accumulated at the outlet of the last stand of the finishing mill, a width gauge at the outlet of the finishing mill is easy to damage, and long time is consumed to clean the waste steel, if the finishing mill stops emergently, a working roller of the finishing mill can be damaged, the equipment is damaged, the equipment cost is increased, and the working roller is replaced for at least 30 minutes once, so that time and labor are wasted, the production progress is influenced, therefore, when the abnormal emergency stop operation occurs in the recoiling equipment, how to effectively treat the waste steel through reasonable and effective operation is realized, the equipment damage is avoided, the hot rolling cost is reduced, and the production line is a problem which needs to be solved urgently.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and designs a segmented delayed shutdown method for a hot rolling roller way, which adopts a roller way G9～GnInstant parking and roller way G1And G2Stopping and rolling way G after steel throwing of finish rolling machine3～G8Method for delayed stopping by stacking scrap steel in G3To G8On the roller way, the working roll of the finishing mill and the equipment at the outlet of the final stand of the finishing mill are protected, and the time for changing the roll and treating the scrap steel is reduced.
The technical scheme of the invention is as follows: a segmented delayed shutdown method for a hot rolling roller way is used for a hot rolling production line comprising a flying shear, a finishing mill, a coiler and a roller way positioned between the finishing mill and the coiler, wherein the roller way comprises a G1～GnThe method is characterized in that: comprises the following steps of (a) carrying out,
1) when the recoiling machine is suddenly stopped, if the finish rolling machine throws steel, the conveying roller way G1～GnAll the vehicles stop immediately;
2) g, when the recoiling machine is suddenly stopped, if the finishing mill does not throw steel9～GnStopping immediately, according to the thickness of the strip and the speed of the last stand of the finishing mill, for G1～G8Is regulated by a control device1And G2The roller speed is increased by delta V on the basis of the speed of the final stand of the finishing mill1，G3-G8Speed at G2Is sequentially increased by delta V2；
3) According to the strip steel detection device of the finishing mill, the actual positions of the tail part and the head part of the strip steel are detected, and then the actual positions are obtainedG3Time T required for delayed parkingG3，TG4～TG8Is at TG3Is sequentially decreased on the basis of (1), and T is decreasedG3～TG8Input into a control device;
4) after the finish rolling machine throws the steel, the control equipment sends out a throwing signal G1、G2Immediately stopping the vehicle;
5) under the parameter setting of the speed and the delay time of the control equipment, the roller way G3～G8Delayed parking with sequential G8、G7、G6、G5、G4、G3And further ensure the scrap steel to stay at G uniformly3～G8And the area prevents the scrap steel from accumulating at the outlet of the finishing mill end frame.
The thickness of the strip steel is detected by a thickness detection device, the speed of the last frame of the finishing mill is detected by a speed detection device, and when the thickness of the strip steel is 1.5 mm-3 mm, the delta V is obtained1Setting as 3.5% -4% of finishing mill end frame speed, delta V2The speed of the finishing mill end frame is set to be 1 to 1.5 percent.
The thickness Ht of the strip steel is detected by a thickness detection device, the speed Vt of the finish rolling end stand is detected by a speed detection device, and when the thickness of the strip steel is 3.1-5 mm, the delta V is obtained1Setting as 3.5% -4% of finishing mill end frame speed, delta V2The speed of the finishing mill end frame is set to be 1.5-2 percent.
The finishing mill comprises F0～F6Seven frames, when the head of the strip steel is discharged out of the finishing mill, the tail position and the time delay setting of the strip steel comprise the following four conditions,
(1) in the first case:
the tail part of the strip steel is positioned on a finishing mill F4～F6When the temperature of the water is higher than the set temperature,
setting delay time: t isG3＝(S6+S5)/V4；
(2) In the second case:
the tail part of the strip steel is positioned on a finishing mill F2～F4When the temperature of the water is higher than the set temperature,
setting delay time: t isG3＝(S6+S5+S4+S3)/V2；
(3) In the third case:
the tail part of the strip steel is positioned on a finishing mill F0～F2When the temperature of the water is higher than the set temperature,
setting delay time: t isG3＝(S6+S5+S4+S3+S2+S1)/V0；
(4) In a fourth case:
when the tail of the strip steel is positioned in front of the flying shears, the flying shears are adopted to cut the strip steel immediately; or the tail part of the strip steel is positioned on a flying shear and finishing mill frame F0In the middle of the time, the air conditioner,
setting delay time: t isG3＝(S6+S5+S4+S3+S2+S1+S0)/V0；
ViFor a finishing mill stand FiI is 0-6;
Sifor a finishing mill stand FiWith the preceding frame Fi-1Strip between in finishing mill F6Length of the later strip
Degree i is 1-6;
S0for flying shears to finishing mills F0Strip between in finishing mill F6The length of the later strip steel;
the finishing mill comprises F0～F6Seven frames, when the head of the strip steel is in the finishing mill, the flying shears are started to shear the strip steel, and the three conditions are included,
(1) in the first case:
when the head of the strip steel is positioned at F4～F6When the temperature of the water is higher than the set temperature,
setting delay time: t isG3＝(S6+S5+S4+S3+S2+S1+S0)/V2；
(2) In the second case:
when the head of the strip steel is positioned at F2～F4When the temperature of the water is higher than the set temperature,
setting delay time: t isG3＝(S4+S3+S2+S1+S0)/V0；
(3) In the third case:
when the head of the strip steel is positioned at F0～F2When the temperature of the water is higher than the set temperature,
setting delay time: t isG3＝(S2+S1+S0)/V0；
In the above-mentioned formulas, the first and second groups,
Vifor a finishing mill stand FiI is 0-6;
Sifor a finishing mill stand FiWith the preceding frame Fi-1Strip between in finishing mill F6The length i of the later strip steel is 1-6;
S0for flying shears to finishing mills F0Strip between in finishing mill F6The length of the later strip steel;
TG4～TG8is taken to be at TG3Then the number of the grooves is decreased by 8 s-11 s.
The control equipment comprises a frequency converter and a PLC controller, wherein the PLC controller is in communication connection with the frequency converter and is used for setting the operation parameters of the frequency converter.
The strip steel position detection device is respectively arranged below each rack of the finishing mill, and the strip steel position detection equipment adopts a metal detector.
The beneficial effects of the invention can be obtained by the scheme: the invention provides a segmented delayed shutdown method for a hot rolling roller way, which adopts a roller way G9～GnInstant parking and roller way G1And G2Stopping and rolling way G after steel throwing of finish rolling machine3～G8Compared with the prior operation method that the roller way and the coiler are suddenly stopped at the same time, the method for stopping the coiler in a delayed way can lead the scrap steel to be stacked in the G position3To G8The area not only protects the working roll of the finishing mill and the equipment at the outlet of the finishing mill tail frame, but also reduces the time required for changing the roll and treating the scrap steel; and the strip steel position detection equipment determines the position condition of the strip steel position, and selects and executes the corresponding speed and delay time setting of each roller way, so that the condition that the stop time of each roller way is delayed due to misjudgment caused by the difference of experience of operators can be avoided.
Therefore, compared with the prior art, the invention has prominent substantive features and remarkable progress, and the beneficial effects of the implementation are also obvious.
Description of the drawings:
FIG. 1 is a schematic view of a hot rolling line process according to the present invention;
wherein, 1 is a flying shear, and 2 is a frame F0And 3 is a frame F1And 4 is a frame F2And 5 is a frame F3And 6 is a frame F4And 7 is a frame F5And 8 is a frame F69 is a roller way G110 is a roller way G211 is a roller way G3And 12 is a roller way G413 is a roller way G5And 14 is a roller way G615 is a roller way G7And 16 is a roller way G817 is a roller table G918 is a roller way G10And 19 is a roller way G11And 20 is a coiler.
The specific implementation mode is as follows:
for a better understanding of the present invention, embodiments thereof are explained in detail below with reference to the accompanying drawings.
The specific implementation mode is as follows: the invention provides a segmented delayed shutdown method for a hot rolling roller way, which is used for a hot rolling production line comprising a flying shear 1, a finishing mill, a coiler 20 and a roller way positioned between the finishing mill and the coiler 20, wherein the roller way comprises a G1～GnThe method is characterized in that: comprises the following steps of (a) carrying out,
1) when the recoiling machine 20 is suddenly stopped, if the finish rolling machine throws steel, the roller way G is conveyed1～GnAll the vehicles stop immediately;
2) g, when the recoiling machine is suddenly stopped, if the finishing mill does not throw steel9～GnStopping immediately, according to the thickness of the strip and the speed of the last stand of the finishing mill, for G1～G8Is regulated by a control device19 and G210 roller table speed is increased by delta V on the basis of the speed of the final stand of the finishing mill1，G3-G8Speed at G2Is sequentially increased by delta V2The strip steel from the finishing mill can be continuously transported forwards on the transport roller way after the coil is stopped and suddenly stopped, so that the strip steel is prevented from being accumulated at the outlet of the finishing mill and damaging equipment; the thickness of the strip steel is detected by a thickness detection device, the speed of the last frame of the finishing mill is detected by a speed detection device, and when the thickness of the strip steel is 1.5 mm-3 mm, the delta V is obtained1Setting as 3.5% -4% of finishing mill end frame speed, delta V2Setting the speed of the finishing mill end frame to be 1-1.5%; when the thickness of the strip steel is 3.1 mm-5 mm, the delta V is1Setting as 3.5% -4% of finishing mill end frame speed, delta V2The speed of the finishing mill end frame is set to be 1.5-2 percent.
3) According to the finish-rolling mill beltThe steel detection equipment detects the actual positions of the tail part and the head part of the strip steel to obtain a roller way G3～G8Time T required for delayed parkingG3～TG8Wherein, TG3～TG8Are sequentially decreased, and T isG3～TG8Input into a control device;
4) after the finish rolling machine throws the steel, the control equipment sends out a throwing signal G19、G210 stopping the vehicle immediately;
5)G3～G8delayed parking with sequential G8、G7、G6、G5、G4、G3And further ensure that the scrap steel is uniformly stacked and left at G3～G8And the area prevents the scrap steel from accumulating at the outlet of the finishing mill end frame.
The finishing mill comprises F0～F6Seven frames, when the head of the strip steel is discharged out of the finishing mill, the tail position and the time delay setting of the strip steel comprise the following four conditions,
(1) in the first case:
the tail of the strip steel is positioned on a frame F of the finishing mill4～F6When the temperature of the water is higher than the set temperature,
setting delay time: t isG3＝(S6+S5)/V4；
(2) In the second case:
the tail of the strip steel is positioned on a frame F of the finishing mill2～F4When the temperature of the water is higher than the set temperature,
setting delay time: t isG3＝(S6+S5+S4+S3)/V2；
(3) In the third case:
the tail part of the strip steel is positioned on a finishing mill F0～F2When the temperature of the water is higher than the set temperature,
setting delay time: t isG3＝(S6+S5+S4+S3+S2+S1)/V0；
(4) In a fourth case:
when the tail of the strip steel is positioned in front of the flying shear 1, the flying shear 1 is adopted to cut the strip steel immediately; or the tail part of the strip steel is positioned between the flying shear 1 and the finishing mill frame F0While in the meantime;
setting delay time: t isG3＝(S6+S5+S4+S3+S2+S1+S0)/V0；
In the above-mentioned formulas, the first and second groups,
Vifor a finishing mill stand FiI is 0-6;
Sifor a finishing mill stand FiWith the preceding frame Fi-1Strip between in finishing mill F6The length i of the later strip steel is 1-6;
S0from flying shear 1 to finishing mill F0Strip between in finishing mill F6The length of the later strip steel;
after calculating to obtain TG3After, TG4～TG8All take on the value of TG3Then the number of the grooves is decreased by 8 s-11 s.
The finishing mill comprises F0～F6Seven frames, when the head of the strip steel is in the finishing mill, the flying shears are started to shear the strip steel, and the three conditions are included,
(1) in the first case:
when the head of the strip steel is positioned at F4～F6When the temperature of the water is higher than the set temperature,
setting delay time: t isG3＝(S6+S5+S4+S3+S2+S1+S0)/V2；
(2) In the second case:
when the head of the strip steel is positioned at F2～F4When the temperature of the water is higher than the set temperature,
setting delay time: t isG3＝(S4+S3+S2+S1+S0)/V0；
(3) In the third case:
when the head of the strip steel is positioned at F0～F2When the temperature of the water is higher than the set temperature,
setting delay time: t isG3＝(S2+S1+S0)/V0；
In the above-mentioned formulas, the first and second groups,
Vifor a finishing mill stand FiI is 0-6;
Sifor a finishing mill stand FiWith the preceding frame Fi-1Strip between in finishing mill F6The length i of the later strip steel is 1-6;
S0from flying shear 1 to finishing mill F0Strip between in finishing mill F6The length of the later strip steel;
after calculating to obtain TG3After, TG4～TG8All take on the value of TG3Then the number of the grooves is decreased by 8 s-11 s.
In the sectional delay shutdown method for the hot rolling roller way, the control equipment comprises a frequency converter and a PLC (programmable logic controller), wherein the PLC is in communication connection with the frequency converter and is used for setting the operation parameters of the frequency converter. The strip steel position detection equipment is respectively arranged below each frame of the finishing mill, and a metal detector is adopted by the strip steel position detection equipment. The thickness detection device is a displacement sensor and is arranged in an AGC cylinder at each stand, and the speed detection device is an encoder and is positioned on a motor of each stand roller of the finishing mill.
The specific embodiment is as follows: in a hot rolling line comprising a flying shear 1, a finishing mill, a coiler 20 and a rollgang between the finishing mill and the coiler, the finishing mill comprises F0～F6Seven frames, a rollgang comprises G1～G1111 groups in total, wherein the flying shears 1 to F0Is 12m, the distance between adjacent stands of the finishing mill is 6m, and the strip steel enters the finishing mill F0Thickness of 30mm before 2, i.e. H030mm, finishing stand F1、F2、F3、F4、F5、F6The thickness of the strip steel at the inlet is 18mm, 12mm, 9mm, 7mm, 5mm and 4mm in sequence, and the strip steel passes through a finishing mill F0～F6After that, the thickness of the strip is 3mm, i.e. Ht3mm, the recoiling machine 20 is stopped suddenly when a fault occurs, the finishing mill does not throw steel, and scrap steel is left in G for accumulation3～G8Zone, equipment protecting finishing mills and finishing mill outlets, G9～G11Immediately stopping, and detecting the tail part of the strip steel to be positioned at the flying shear 1 and the finishing mill frame F through strip steel position detection equipment02, the speed detection device detects the final stand F of the finishing mill6Velocity V of6Is 8m/s, F0Velocity V of0At 3.2m/s, G1、G2Are all set to 8.3m/s, G3～G8Are set to 8.4m/s, 8.5m/s, 8.6m/s, 8.7m/s, 8.8m/s, 8.9m/s in sequence, according to the formula
TG3＝(S0+S1+S2+S3+S4+S5+S6)/V0
According to the volume equality formula, neglecting the change of the width of the strip steel,
Si＝Li×Hi/Ht
calculated to obtain, TG3＝72s，
Wherein,
Lifor a finishing mill stand FiWith the frontA frame Fi-1I is 1-6;
Lifrom flying shear 1 to finishing mill stand FiI is 0;
Hifor a finishing mill stand FiThe thickness of strip steel at the inlet, i, is 0-6;
Htfor finishing mill F68, the thickness of the strip steel at the outlet;
namely the delay time of the G3 roller way is 72s, and further G is obtained4～G8The delayed parking time of (1) is 62s, 52s, 42s, 32s and 22s in sequence. After the finish rolling mill throws the steel, the logical steel throwing signal, G, is controlled by the PLC controller1、G2Immediately stopping, under the control of frequency converter, G8、G7、G6、G5、G4、G3Stopping in sequence to ensure that the scrap steel is uniformly stopped at G3～G8And the area prevents the scrap steel from accumulating at the outlet of the finishing mill end frame.
When the coiler 20 has a problem and stops suddenly, the method for stopping the hot rolling roller way in a segmented and delayed manner adopts the roller way G9～G12Instant parking and roller way G19 and G210 stop after finishing mill throws steel, roll table G3～G8Compared with the prior operation method that the roller way and the coiler are suddenly stopped at the same time, the method for stopping the coiler in a delayed way can lead the scrap steel to be stacked in the G position311 to G816, not only protecting the working rolls of the finishing mill and the equipment at the outlet of the final stand of the finishing mill, but also reducing the time required for changing the rolls and treating the scrap steel; and the strip steel position detection equipment determines the position condition of the strip steel position, and selects and executes the corresponding speed and delay time setting of each roller way, so that the condition that the stop time of each roller way is delayed due to misjudgment caused by the difference of experience of operators can be avoided.
The above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and variations, modifications, additions and substitutions which can be made by a person of ordinary skill in the art within the spirit of the present invention are also within the scope of the present invention.
Claims (8)
1. A segmented delayed shutdown method for a hot rolling roller way is used for a hot rolling production line comprising a flying shear, a finishing mill, a coiler and a roller way positioned between the finishing mill and the coiler, wherein the roller way comprises a G1～GnThe method is characterized in that: comprises the following steps of (a) carrying out,
1) when the recoiling machine is suddenly stopped, if the finish rolling machine throws steel, the conveying roller way G1～GnAll the vehicles stop immediately;
2) g, when the recoiling machine is suddenly stopped, if the finishing mill does not throw steel9～GnStopping immediately according to strip thicknessSpeed of last stand of finishing mill, pair G1～G8Is regulated by a control device1And G2The roller speed is increased by delta V on the basis of the speed of the final stand of the finishing mill1，G3～G8Speed at G2Is sequentially increased by delta V2；
3) According to the strip steel detection device of the finishing mill, the actual positions of the tail part and the head part of the strip steel are detected, and G is obtained3Time T required for delayed parkingG3，TG4～TG8Is at TG3Is sequentially decreased on the basis of (1), and T is decreasedG3～TG8Input into a control device;
4) after the finish rolling machine throws the steel, the control equipment sends out a throwing signal G1、G2Immediately stopping the vehicle;
5) under the parameter setting of the speed and the delay time of the control equipment, the roller way G3～G8Delayed parking with sequential G8、G7、G6、G5、G4、G3And further ensure the scrap steel to stay at G uniformly3～G8And the area prevents the scrap steel from accumulating at the outlet of the finishing mill end frame.
2. The segmented delayed shutdown method for the hot rolling roller way according to claim 1, characterized in that: the thickness of the strip steel is detected by a thickness detection device, the speed of the last frame of the finishing mill is detected by a speed detection device, and when the thickness of the strip steel is 1.5 mm-3 mm, the delta V is obtained1Setting as 3.5% -4% of finishing mill end frame speed, delta V2The speed of the finishing mill end frame is set to be 1 to 1.5 percent.
3. The segmented delayed shutdown method for the hot rolling roller way according to claim 1, characterized in that: the thickness of the strip steel is detected by a thickness detection device, the speed of a finish rolling final stand is detected by a speed detection device, and when the thickness of the strip steel is 3.1-5 mm, delta V is obtained1Setting as 3.5% -4% of finishing mill end frame speed, delta V2Arranged as a finishing mill1.5% -2% of the speed of the final stand.
4. The segmented delayed shutdown method for the hot rolling roller way according to claim 1, 2 or 3, characterized in that: the finishing mill comprises F0～F6Seven frames, when the head of the strip steel is discharged out of the finishing mill, the tail position and the time delay setting of the strip steel comprise the following conditions,
(1) in the first case:
the tail part of the strip steel is positioned on a finishing mill F4～F6When the temperature of the water is higher than the set temperature,
setting delay time: t isG3＝(S6+S5)/V4；
(2) In the second case:
the tail part of the strip steel is positioned on a finishing mill F2～F4When the temperature of the water is higher than the set temperature,
setting delay time: t isG3＝(S6+S5+S4+S3)/V2；
(3) In the third case:
the tail part of the strip steel is positioned on a finishing mill F0～F2When the temperature of the water is higher than the set temperature,
setting delay time: t isG3＝(S6+S5+S4+S3+S2+S1)/V0；
(4) In a fourth case:
when the tail of the strip steel is positioned in front of the flying shears, the flying shears are adopted to cut the strip steel immediately; or the tail part of the strip steel is positioned on a flying shear and finishing mill frame F0In the middle of the time, the air conditioner,
setting delay time: t isG3＝(S6+S5+S4+S3+S2+S1+S0)/V0；
In the above-mentioned formulas, the first and second groups,
Vifor a finishing mill stand FiI is 0-6;
Sifor a finishing mill stand FiWith the preceding frame Fi-1Strip between in finishing mill F6The length i of the later strip steel is 1-6;
S0for flying shears to finishing mills F0Strip between in finishing mill F6The length of the later strip steel.
5. The segmented delayed shutdown method for the hot rolling roller way according to claim 1, 2 or 3, characterized in that: the finishing mill comprises F0～F6Seven frames, when the head of the strip steel is in the finishing mill, the flying shears are started to shear the strip steel, including the following conditions,
(1) in the first case:
when the head of the strip steel is positioned at F4～F6When the temperature of the water is higher than the set temperature,
setting delay time: t isG3＝(S6+S5+S4+S3+S2+S1+S0)/V2；
(2) In the second case:
when the head of the strip steel is positioned at F2～F4When the temperature of the water is higher than the set temperature,
setting delay time: t isG3＝(S4+S3+S2+S1+S0)/V0；
(3) In the third case:
when the head of the strip steel is positioned at F0～F2When the temperature of the water is higher than the set temperature,
setting delay time: t isG3＝(S2+S1+S0)/V0；
In the above-mentioned formulas, the first and second groups,
Vifor a finishing mill stand FiI is 0-6;
Sifor a finishing mill stand FiWith the preceding frame Fi-1Strip between in finishing mill F6The length i of the later strip steel is 1-6;
S0for flying shears to finishing mills F0Strip between in finishing mill F6The length of the later strip steel.
6. The method for stopping the hot rolling roller way in sections in a delayed manner according to claim 4 or 5, characterized in thatCharacterized in that: t isG4～TG8Is taken to be at TG3Then the number of the grooves is decreased by 8 s-11 s.
7. The segmented delayed shutdown method for the hot rolling roller way according to claim 1 or 2, characterized in that: the control equipment comprises a frequency converter and a PLC controller, wherein the PLC controller is in communication connection with the frequency converter and is used for setting the operation parameters of the frequency converter.
8. The segmented delayed shutdown method for the hot rolling roller way according to claim 1, characterized in that: the strip steel position detection device is respectively arranged below each rack of the finishing mill, and a metal detector is adopted by the strip steel position detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610451393.7A CN106111706B (en) | 2016-06-21 | 2016-06-21 | A kind of hot rolling roller-way fragment delay parking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610451393.7A CN106111706B (en) | 2016-06-21 | 2016-06-21 | A kind of hot rolling roller-way fragment delay parking method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106111706A true CN106111706A (en) | 2016-11-16 |
| CN106111706B CN106111706B (en) | 2018-05-04 |
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| CN201610451393.7A Expired - Fee Related CN106111706B (en) | 2016-06-21 | 2016-06-21 | A kind of hot rolling roller-way fragment delay parking method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848217A (en) * | 2019-04-01 | 2019-06-07 | 山东钢铁集团日照有限公司 | A kind of cold coiling processing method for batching region steel-fastening |
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| JPS5890310A (en) * | 1981-11-25 | 1983-05-30 | Toshiba Corp | Controlling device for rolling pitch |
| US6412322B1 (en) * | 1999-03-19 | 2002-07-02 | Kawasaki Steel Corporation | Rolling method |
| CN102205348A (en) * | 2010-03-30 | 2011-10-05 | 上海梅山钢铁股份有限公司 | Control method for stopping reversible cold-rolling mill |
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| CN103223418A (en) * | 2012-01-29 | 2013-07-31 | 宝山钢铁股份有限公司 | Halting method for scrap steel of hot rolling coilers |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109848217A (en) * | 2019-04-01 | 2019-06-07 | 山东钢铁集团日照有限公司 | A kind of cold coiling processing method for batching region steel-fastening |
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| CN106111706B (en) | 2018-05-04 |
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