CN114769360A - Coil unloading method and system for hot rolling coiler - Google Patents

Coil unloading method and system for hot rolling coiler Download PDF

Info

Publication number
CN114769360A
CN114769360A CN202210464032.1A CN202210464032A CN114769360A CN 114769360 A CN114769360 A CN 114769360A CN 202210464032 A CN202210464032 A CN 202210464032A CN 114769360 A CN114769360 A CN 114769360A
Authority
CN
China
Prior art keywords
coil
roller
wrapper
tail
steel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202210464032.1A
Other languages
Chinese (zh)
Other versions
CN114769360B (en
Inventor
姚威
丁正
周伟文
杨尚钢
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maanshan Iron and Steel Co Ltd
Original Assignee
Maanshan Iron and Steel Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maanshan Iron and Steel Co Ltd filed Critical Maanshan Iron and Steel Co Ltd
Priority to CN202210464032.1A priority Critical patent/CN114769360B/en
Publication of CN114769360A publication Critical patent/CN114769360A/en
Application granted granted Critical
Publication of CN114769360B publication Critical patent/CN114769360B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/24—Transferring coils to or from winding apparatus or to or from operative position therein; Preventing uncoiling during transfer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0057—Coiling the rolled product
    • 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
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Replacement Of Web Rolls (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)

Abstract

The invention discloses a coil unloading method and system for a hot rolling coiler, and belongs to the field of metallurgical equipment. The method comprises S1, pre-lifting; s2, coiling; s3, fixing the tail; s4, coil stripping, the invention analyzes the value flow of the coil stripping process of the hot rolling coiler, modifies the control program to enable the carrier roller of the coil stripping car to replace the No. 2 coil-aid roller for tail pressing, and saves the time for opening the No. 2 coil-aid roller and lifting the coil stripping car, thereby reducing the time for waiting materials in the coil stripping car and opening the No. 2 coil-aid roller, reducing the total coil stripping time, improving the production efficiency and effectively prolonging the service life of the No. 2 coil-aid roller.

Description

Coil unloading method and system for hot rolling coiler
Technical Field
The invention belongs to the field of metallurgical equipment, and particularly relates to a coil unloading method and system of a hot rolling coiler.
Background
In recent years, the process control of a heating furnace and a rolling mill is continuously improved, and along with the application of automatic tapping control of a production line, the tapping rhythm is gradually improved; therefore, the coiling rhythm of the coiling machine matched with the rolling line needs to meet the production requirement.
And after the normal steel coil is coiled, the coiling machine enters a coil unloading process, and enters a to-be-coiled state after the coil unloading is finished. Taking 2250 hot rolling line coiler as an example, the total coil-unloading time is about 108 seconds, and the double coiler production capacity is 33 pieces per hour. The 3-reel machine must be put into use, generally 37 pieces per hour, to meet the current production requirements. If a certain coiling machine breaks down in production, the production line must be produced by two machines or even a single machine, the defect of long coil unloading time is obvious, and the production rhythm is seriously influenced.
Through retrieval of patent publication No. CN110064659A with publication date of 2020, 6 and 23, the invention discloses a coil receiving control method for a coil unloading trolley of a hot rolling coiler, which comprises the following steps: 1) making a calibration program to calculate the low-speed lifting speed and the high-speed lifting speed of the coil stripping trolley; 2) when the strip steel is coiled, the coil unloading trolley is firstly pre-lifted to a pre-lifting position 300-500mm below the maximum coil diameter of the coiling machine for waiting; 3) when the time for the tail of the strip steel to reach the coiling machine is less than the time required by the coil stripping trolley to ascend from the pre-ascending position at a low speed to contact the steel coil, the coil stripping trolley ascends at a low speed to receive the coil; 4) the coil stripping trolley descends at a low speed after receiving and discharging coils out of the coiling machine, and when the descending time of the coil stripping trolley is longer than the time from the coil receiving position to the coil stripping fixed beam, the coil stripping trolley returns to the lowest position at a high speed to finish all coil stripping actions. The method ensures that the coil stripping trolley stably receives coils, reduces the accident rate, but has limited effect on improving the coiling speed.
The patent publication number is CN112605154A, and the publication date is 2021, 4 and 6 days, and the invention discloses a steel coil coiling method, belonging to the technical field of automatic control. According to the current diameter of the steel coil, the method comprises the steps of triggering three lifting actions of the steel coil trolley when the distance between the tail of the strip and the stop position is calculated to be a certain distance; the strip steel tail residual length is calculated in real time in the tail flicking process, and when the strip steel tail is about to leave an upper press roller of a coiling machine, a steel coil trolley is automatically triggered to lift and contact the strip steel for three times, so that the coiling of a steel coil is completed. The invention effectively avoids the problem of outer ring looseness of the steel coil, improves the coil receiving speed of the steel coil trolley, reduces the labor frequency that operators need to frequently and manually click the coiling machine to rotate for one circle to eliminate the outer ring looseness of the steel coil, and ensures continuous and stable high-level automatic production. The invention mainly aims at optimizing the program rhythm of the cold rolling coiler, aims at preventing coil loosening, improves the running stability of coiling equipment, and does not obviously improve the coil unloading rhythm.
Disclosure of Invention
1. Problems to be solved
The method and the system are utilized to coil and unload the steel coil, so that the time required by waiting of materials in an unloading vehicle and opening of a third auxiliary coiling roller can be reduced, and the aim of reducing the total coil unloading time is fulfilled.
2. Technical scheme
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the method specifically comprises the following steps:
s1, pre-lifting: when the tail part of the strip steel reaches the 8 th group of layer cooling roller ways, the coil stripping car is automatically lifted to a pre-lifting position;
s2, coiling: the pre-lifting position is set to be 200mm away from the outer ring of the steel coil from the upper surface of the carrier roller of the coil stripping car; when the tail of the strip steel passes through the front thermal detection position of the recoiling machine, the first auxiliary winding roller and the second auxiliary winding roller are pressed inwards, and the third auxiliary winding roller does not act;
s3, tail fixing: when the strip tail passes through the pinch roll, performing first tail positioning, simultaneously lifting the coil stripper car upwards, jacking the coil to a position behind the steel coil, and then performing second tail positioning in a target 5 o' clock direction;
s4, coil stripping: and after the second tail positioning is finished, opening the first wrapper roller and the second wrapper roller to the maximum roll gap position, and starting the coil stripping of the coil stripping vehicle.
Wherein the position of the strip steel tail is calculated by tail tracking, and the formula satisfies
Figure BDA0003622903690000021
Wherein, t1As the end point of time of the reel load, t0Time of throwing steel for finishing millPoint, vsThe strip steel speed is shown, and L is the strip tail distance to the finishing mill position.
The pre-lifting position of the coil stripper is set to be 150-200mm away from the outer ring of the steel coil from the upper surface of the carrier roller of the coil stripper, and the pre-lifting position meets the formula
H＝hm-Dcoil/2-Dcr/2-X
Wherein h ismThe distance from the horizontal central line of the mandrel to the central line of the lowest position of the carrier roller is 1765mm in practical production, DcoilThe diameter of the steel coil is estimated, and is 1000-2150mm in practical production, DcrThe diameter of the carrier roller is 300mm in actual production, H is the pre-lifting position of the carrier roller, 340-. Wherein X is an adjustable variable set to 150-200mm due to DcoilFor the estimated value of the diameter of the steel coil, the diameter of the steel coil has an error in the actual production process, and the error is reserved for 150-200mm, so that the influence of over-small distance on safety production and over-large distance on coil unloading time is avoided.
The system for realizing coil unloading of the hot rolling coiler comprises at least three coil assisting rollers and a coil unloading vehicle, wherein the coil unloading vehicle is provided with a coil unloading vehicle carrier roller, the coil assisting rollers are positioned on the periphery of a hot rolling coil, and the coil unloading vehicle is positioned below the hot rolling coil. Including first wrapper roller, second wrapper roller and third wrapper roller, first wrapper roller is located the 1 o ' clock direction at coil of strip center, and the second wrapper roller is located the position of the 9 o ' clock direction at coil of strip center, and the third wrapper roller is located the 5 o ' clock direction at coil of strip center, first wrapper roller and second wrapper roller between contained angle be 120, and second wrapper roller and third wrapper roller between contained angle be 120, and first wrapper roller and third wrapper roller between the contained angle be 120. The distance between the first wrapper roll and the strip steel surface and the distance between the second wrapper roll and the strip steel surface are 200mm, the efficiency is influenced if the distance is too large, and the stability of equipment is influenced if the distance is too small. In addition, the third auxiliary winding roller is arranged at the position of the maximum roll gap and is positioned in the 5 o' clock direction of the center of the steel coil, so that the interference of the third auxiliary winding roller and the operation of a carrier roller of the coil stripping vehicle is avoided.
The lifting speed in the step S1 is 180mm/S, and the movement speeds of the first wrapper roller and the second wrapper roller in the step S2 are 100 mm/S; the lifting speed in the step S3 is 110 mm/S; in step S4, the movement speed of the first wrapper roller and the second wrapper roller is 100 mm/S.
In the prior art, after the steel coil is coiled, the coiling machine enters a coil unloading process, and then enters a to-be-coiled state after the coil unloading is finished. In the coiling process, the steel coil is coiled after primary tail positioning, and the total coil unloading time of the steel coil is influenced by waiting for the opening of the third coil-unloading roller and the lifting action of the coil-unloading trolley, so that the secondary positioning of the strip tail is completed by using the supporting roller of the coil-unloading trolley to replace the third coil-unloading roller. And when the steel coil is not completely coiled by the coil unloading vehicle, pre-lifting is carried out. During the unwinding process, the third wrapper roller is kept inactive in the maximum position. The time of lifting the coil stripping vehicle and opening the wrapper roller is saved, and the production efficiency is improved.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the invention, through analyzing the value flow of the coil stripping process of the hot rolling coiler and modifying the control program, the carrier roller of the coil stripping car replaces the third wrapper roller to press the tail, so that the time for opening the third wrapper roller and lifting the coil stripping car is saved, the time for waiting materials in the coil stripping car and opening the third wrapper roller is reduced, and the purpose of reducing the total coil stripping time is achieved;
(2) the invention reduces the use frequency of the third auxiliary winding roller of the coiler, thereby prolonging the service life of the third auxiliary winding roller;
(3) when the three recoiling machines are adopted for production, due to the fast coil unloading, two standby machines exist at the same time with a larger probability, and a forced switching function is put into use when a fault occurs, so that the steel piling occurrence rate is further reduced;
(4) the invention controls the program modification, has low modification cost, brings obvious effect and realizes cost reduction and efficiency improvement.
Drawings
The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for illustrative purposes only and thus do not limit the scope of the present invention. Furthermore, unless otherwise indicated, the drawings are intended to be illustrative of the structural configurations described herein only, and are not necessarily drawn to scale.
FIG. 1 is a schematic view of a coiling step of comparative example 1 according to the present invention;
FIG. 2 is a schematic view of the first tailing sizing step of comparative example 1 of the present invention;
FIG. 3 is a schematic view of the opening step of the wrapper roll of comparative example 1 according to the present invention;
FIG. 4 is a schematic view of a lifting step of comparative example 1 of the present invention;
FIG. 5 is a schematic view showing the coil stripping step of comparative example 1 according to the present invention;
FIG. 6 is a schematic view of pre-lifting and reeling steps in example 1 of the present invention;
FIG. 7 is a schematic diagram of the step-tailing procedure in example 1 of the present invention;
FIG. 8 is a schematic view showing an unwinding step in embodiment 1 of the present invention;
FIG. 9 is a schematic diagram showing the timing of coiling and uncoiling a coil before comparative example 1 of the present invention is improved;
FIG. 10 is a schematic diagram of the timing sequence of the coil steel coiling and coil stripping after the improvement of the embodiment 1 of the present invention.
Detailed Description
The following detailed description of exemplary embodiments of the invention refers to the accompanying drawings, which form a part hereof, and in which is shown by way of illustration exemplary embodiments in which the invention may be practiced. Although these exemplary embodiments are described in sufficient detail to enable those skilled in the art to practice the invention, it should be understood that other embodiments may be realized and that various changes to the invention may be made without departing from the spirit and scope of the present invention. The following more detailed description of the embodiments of the invention is not intended to limit the scope of the invention as claimed, but is presented for purposes of illustration only and not limitation to describe the features and characteristics of the invention, to set forth the best mode of carrying out the invention, and to sufficiently enable one skilled in the art to practice the invention. Accordingly, the scope of the invention is to be limited only by the following claims.
Comparative example 1
The coil stripping of the coiling machine in the prior art comprises the following steps:
step S1, winding: after the tail of the strip steel passes through a front thermal detection position of a coiling machine, the auxiliary coiling rollers No. 1, No. 2 and No. 3 are pressed inwards;
step S2, first tail fixing: performing first tail positioning to target at 9 o' clock direction; the coil stripping vehicle does not act;
step S3, opening the wrapper roller: after the first tail fixing is finished, opening the No. 2 wrapper roll to the maximum roll gap position;
step S4, lifting: after the No. 2 auxiliary winding roller is opened, the coil stripping trolley starts to lift until the coil stripping trolley contacts the steel coil and reaches the target set force;
step S5, second tail fixing: after the coil stripping trolley is lifted in place, performing second tail positioning to the target 5 o' clock direction;
step S6, coil stripping: after the secondary tail positioning is finished, the No. 1 wrapper roller and the No. 3 wrapper roller are opened to the position of the maximum roll gap, and the coil stripping vehicle starts to strip coils.
As shown in fig. 2, the steel coil is completely coiled when the tail is positioned once, and the two actions of opening the auxiliary winding roller No. 2 and lifting the coil unloading trolley are waited in the coiling machine all the time, so that the total coil unloading time is influenced.
According to the invention, the carrier roller of the coil stripping car replaces the No. 2 auxiliary coil roller to press the tail by modifying the control program, so that the time for opening the No. 2 auxiliary coil roller and lifting the coil stripping car is saved, and the time for waiting materials in the coil stripping car and opening the No. 2 auxiliary coil roller is reduced.
Example 1
S1, pre-lifting: when the tail part of the strip steel reaches the 8 th group of layer cooling roller ways, the coil stripping car is automatically lifted to a pre-lifting position; the pre-lifting position is set to be 200mm away from the outer ring of the steel coil on the upper surface of the ground roller of the coil stripping vehicle;
s2, coiling: when the tail of the strip steel passes through the front thermal detection position of the coiling machine, the No. 1 wrapper roll and the No. 3 wrapper roll are pressed inwards, and the No. 2 wrapper roll does not act; wherein the movement speed of the No. 1 wrapper roll and the No. 3 wrapper roll is 100 mm/s; wherein, the position of the tail of the strip steel is calculated by tail tracking, and the formula is
Figure BDA0003622903690000051
Wherein, t1As the end point of time of the reel load, t0For the finish rolling machine throwing time point, vsThe strip steel speed is calculated, L is the distance between the strip tail and the finishing mill, and in the embodiment, the strip steel speed is 2-12 m/s.
S3, tail fixing: when the strip tail passes through the pinch roll, ATC1(Auto tail control 1 first tail positioning) is executed, the coil stripper car is lifted upwards at the same time, the strip tail is pushed to a steel coil rear locking position, then 2 tail fixing is carried out, the target 5 o' clock direction is reached, the time for opening the No. 2 auxiliary coil roll and lifting the coil stripper car is saved in the improvement process, and the lifting speed is 110 mm/s.
S4, coil stripping: after the secondary tail positioning is finished, the No. 1 and No. 3 wrapper rollers are opened to the maximum roll gap position, and the coil stripping vehicle starts to strip coils, wherein the movement speed of the No. 1 and No. 3 wrapper rollers is 100 mm/s.
In this embodiment, the pre-lift position satisfies H ═ Hm-Dcoil/2-Dcra/2-X, wherein hmThe distance from the horizontal central line of the mandrel to the central line of the lowest position of the carrier roller is 1765 mm; dcoilThe diameter of the steel coil is estimated, namely 2150 mm; dcrThe diameter of the carrier roller is 300 mm; x is the distance from the upper surface of the support roller of the coil stripping car to the outer ring of the steel coil and is 200mm, the calculated pre-lifting position H of the support roller is 340mm, the coil diameter is a predicted value at the moment, the safety distance is reserved for ensuring safety production, and the pre-lifting position of the support roller to the upper surface of the support roller of the coil stripping car and the outer ring of the steel coil is set. No. 1 helps the winding up roller to be located the 1 o ' clock direction at coil of strip center, and No. 2 helps the winding up roller to be located the 5 o ' clock direction at coil of strip center, and No. 3 helps the position of winding up roller in the 9 o ' clock direction at coil of strip center, No. 1 helps the contained angle between winding up roller and No. 2 to be 120, and No. 2 helps the contained angle between winding up roller and the No. 3 to be 120, and No. 1 helps the contained angle between winding up roller and the No. 3 to be 120, 1 number helps winding up roller and No. 3 to help the winding up roller and coil of strip center/distance on belted steel surface to be 200mm respectively, No. 2 helps the winding up roller to set up in the biggest roll gap position, is 1044 mm.
As shown in fig. 9 and 10, it can be seen from the coiled steel and coil stripping timing charts before and after the improvement, the pre-lifting height of the present invention is set to be 200mm from the steel coil on the upper surface of the supporting roller. When the steel coil is not completely coiled by the coil unloading vehicle, the pre-lifting action is carried out, so that the time is saved by 8 s. In the coil stripping process, the No. 2 wrapper roller is kept at the maximum roll gap position and does not act, so that the opening action time of the No. 4s2 wrapper roller is saved. The improved sequence of opening the wrapper roller No. 2 and lifting the decoiler is saved, the total decoiling time is reduced from 108 seconds to 96 seconds in 12 seconds, and the hourly output of the two recoilers is improved to 37 rolls compared with that of the 33 rolls before the improvement.
The operation stability of tracking equipment after transformation, through the tracking of last year, equipment operation is stable to reduce the use of number 2 wrapper roll, improved its life.
After tracking and improving the coil stripping mode, the influence on the product quality is not found through tracking in the last year.
Example 2
S1, pre-lifting: when the tail part of the strip steel reaches the 8 th group of layer cooling roller ways, the coil stripping car is automatically lifted to a pre-lifting position; setting the pre-lifting position as the distance between the upper surface position of the ground roller of the coil unloading vehicle and the outer ring of the steel coil to be 150-200 mm;
s2, coiling: when the tail of the strip steel passes through the front thermal detection position of the coiling machine, the No. 1 wrapper roll and the No. 3 wrapper roll are pressed inwards, and the No. 2 wrapper roll does not act; wherein the movement speed of the No. 1 wrapper roll and the No. 3 wrapper roll is 100 mm/s; wherein, the position of the tail of the strip steel is calculated by tail tracking, and the formula is
Figure BDA0003622903690000052
Wherein, t1As the end point of time of the reel load, t0Point of time of throwing steel for finishing mill vsThe strip steel speed is calculated, L is the distance between the strip tail and the finishing mill, and in the embodiment, the strip steel speed is 2-12 m/s.
S3, tail fixing: when the strip tail passes through the pinch roll, ATC1(Auto tail control 1 first tail positioning) is executed, the coil stripper car is lifted upwards at the same time, the strip tail is pushed to a steel coil rear locking position, then 2 tail fixing is carried out, the target 5 o' clock direction is reached, the time for opening the No. 2 auxiliary coil roll and lifting the coil stripper car is saved in the improvement process, and the lifting speed is 110 mm/s.
S4, coil stripping: after the secondary tail positioning is finished, the No. 1 and No. 3 wrapper rollers are opened to the maximum roll gap position, and the coil stripping vehicle starts to strip coils, wherein the movement speed of the No. 1 and No. 3 wrapper rollers is 100 mm/s.
In this embodiment, the pre-lift position satisfies H ═ Hm-Dcoil/2-Dcra/2-X, wherein hmThe distance from the horizontal central line of the mandrel to the central line of the lowest position of the carrier roller is 1765 mm; dcoilThe estimated value of the diameter of the steel coil is 1000 mm; dcrThe diameter of the carrier roller is 300 mm; x is the distance from the upper surface of the support roller of the coil stripping car to the outer ring of the steel coil and is 175mm, the calculated pre-lifting position H of the support roller is 940mm, the coil diameter is a predicted value at the moment, the safety distance is reserved for ensuring safe production, and the pre-lifting position of the support roller to the upper surface of the support roller of the coil stripping car to the outer ring of the steel coil is set to be 175 mm. No. 1 helps the winding up roller to be located the 1 o ' clock direction at coil of strip center, and No. 2 helps the winding up roller to be located the 5 o ' clock direction at coil of strip center, and No. 3 helps the position of winding up roller in the 9 o ' clock direction at coil of strip center, No. 1 helps the contained angle between winding up roller and No. 2 to be 120, and No. 2 helps the contained angle between winding up roller and the No. 3 to be 120, and No. 1 helps the contained angle between winding up roller and the No. 3 to be 120, 1 number helps winding up roller and No. 3 to help the winding up roller and coil of strip center/distance on belted steel surface to be 200mm respectively, No. 2 helps the winding up roller to set up in the biggest roll gap position, is 1044 mm.
Example 3
S1, pre-lifting: when the tail part of the strip steel reaches the 8 th group of layer cooling roller ways, the coil stripping car is automatically lifted to a pre-lifting position; setting the pre-lifting position to be 150mm away from the outer ring of the steel coil at the upper surface position of the ground roller of the coil stripping car;
s2, coiling: when the tail of the strip steel passes through the front thermal detection position of the coiling machine, the No. 1 wrapper roll and the No. 3 wrapper roll are pressed inwards, and the No. 2 wrapper roll does not act; wherein the movement speed of the No. 1 wrapper roll and the No. 3 wrapper roll is 100 mm/s; wherein, the position of the tail of the strip steel is calculated by tail tracking, and the formula is
Figure BDA0003622903690000061
Wherein, t1As the end point of time of the reel load, t0Point of time of throwing steel for finishing mill vsThe strip steel speed is calculated, L is the distance between the strip tail and the finishing mill, and in the embodiment, the strip steel speed is 2-12 m/s.
S3, tail fixing: when the strip tail passes through the pinch roll, the ATC1(Auto tail control 1 first tail positioning) is executed, the coil stripper car is lifted upwards at the same time, the strip tail is pushed to the rear locking position of the steel coil and then the tail is determined for 2 times, the target 5 o' clock direction is achieved, the time for opening the No. 2 wrapper roll and lifting the coil stripper car is saved in the improvement process, and the lifting speed is 110 mm/s.
S4, coil stripping: after the secondary tail positioning is finished, the No. 1 and No. 3 wrapper rollers are opened to the maximum roll gap position, and the coil stripping vehicle starts to strip coils, wherein the movement speed of the No. 1 and No. 3 wrapper rollers is 100 mm/s.
In this embodiment, the pre-lift position satisfies H ═ Hm-Dcoil/2-Dcra/2-X, wherein hmThe distance from the horizontal central line of the mandrel to the central line of the lowest position of the carrier roller is 1765 mm; dcoilThe estimated value of the diameter of the steel coil is 1000-2150 mm; dcrThe diameter of the carrier roller is 300 mm; x is the distance between the upper surface of the support roller of the coil stripping car and the outer ring of the steel coil and is 150mm, the calculated pre-lifting position H of the support roller is 390mm, the coil diameter is a predicted value at the moment, the safety distance is reserved for ensuring the safety production, and the pre-lifting position H of the support roller of the coil stripping car to the upper surface of the support roller of the coil stripping car and the outer ring of the steel coil is set. No. 1 helps the winding up roller to be located the 1 o ' clock orientation at coil of strip center, and No. 2 helps the winding up roller to be located the 5 o ' clock orientation at coil of strip center, and No. 3 helps the position of winding up roller to be located the 9 o ' clock orientation at coil of strip center, No. 1 helps the contained angle between winding up roller and No. 2 to be 120, and No. 2 helps the contained angle between winding up roller and the No. 3 to be 120, 1 number 1 helps the winding up roller and No. 3 to help the winding up roller and coil of strip center/distance on belted steel surface to be 200mm respectively, No. 2 helps the winding up roller to set up in the biggest roll gap position, for 1044 mm.

Claims (9)

1. A coil unloading method of a hot rolling coiler is characterized by comprising the following steps:
s1, pre-lifting: when the tail of the strip steel reaches the first position, the coil stripping car is automatically lifted to a pre-lifting position;
s2, coiling: when the tail of the strip steel passes through a second position, the first auxiliary winding roller and the second auxiliary winding roller are pressed inwards, and the third auxiliary winding roller does not act;
s3, tail fixing: when the strip tail passes through the third position, performing first tail positioning, lifting the coil stripper car upwards, pushing the coil stripper car to a position behind the steel coil, and then performing second tail positioning;
s4, coil stripping: and after the second tail positioning is finished, opening the first wrapper roller and the second wrapper roller to the maximum roll gap position, and starting the coil stripping of the coil stripping vehicle.
2. A method of coil stripping in a hot rolling coiler according to claim 1, characterized in that said pre-lifting position satisfies:
H＝hm-Dcoil/2-Dcr/2-X
wherein h ismIs the distance from the horizontal central line of the mandrel to the central line of the lowest position of the carrier roller, DcoilFor the estimated value of the coil diameter, DcrThe diameter of the carrier roller is X, the distance between the upper surface of the carrier roller of the coil stripping car and the outer ring of the steel coil is X, and the pre-lifting position of the carrier roller is H.
3. The coil stripping method of a hot rolling coiler as claimed in claim 2, characterized in that X is 150-200 mm.
4. The method as claimed in claim 1, wherein the position of the strip tail is calculated by tail tracking according to the formula
Figure FDA0003622903680000011
Wherein, t1As the end point of time of the reel load, t0Point of time of throwing steel for finishing mill vsThe strip steel speed and L the strip tail distance to the finishing mill.
5. The hot rolling coiler coil stripping method according to claim 1, characterized in that the lifting speed in step S1 is 180 mm/S; in the step S2, the movement speed of the first wrapper roll and the second wrapper roll is 100 mm/S; in step S3, the lifting speed is 110 mm/S; in step S4, the movement speed of the first wrapper roller and the second wrapper roller is 100 mm/S.
6. A method of coil stripping in a hot rolling coiler according to claim 1, characterised in that the first position is a group 8 cold roll table, the second position is a pre-coiler hot inspection position and the third position is a pinch roll.
7. A system for realizing coil stripping of a hot rolling coiler according to any one of the claims 1 to 6, characterized by comprising at least three coil-aid rolls and a coil stripping car, wherein the coil stripping car is provided with coil stripping car carrier rollers, the coil-aid rolls are positioned on the periphery of the hot rolling coil, and the coil stripping car is positioned below the hot rolling coil.
8. The system of claim 7, comprising a first wrapper roller, a second wrapper roller and a third wrapper roller, wherein the first wrapper roller is located at 1 o ' clock of the center of the steel coil, the second wrapper roller is located at 9 o ' clock of the center of the steel coil, the third wrapper roller is located at 5 o ' clock of the center of the steel coil, the included angle between the first wrapper roller and the second wrapper roller is 120 °, the included angle between the second wrapper roller and the third wrapper roller is 120 °, and the included angle between the first wrapper roller and the third wrapper roller is 120 °.
9. The hot rolling coiler decoiling system according to claim 8, wherein the first and second wrapper rolls are at a distance of 200mm from the surface of the strip, and the third wrapper roll is arranged at the maximum roll gap position and is 1044 mm.
CN202210464032.1A 2022-04-29 2022-04-29 Coil unloading method and system of hot rolling coiling machine Active CN114769360B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210464032.1A CN114769360B (en) 2022-04-29 2022-04-29 Coil unloading method and system of hot rolling coiling machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210464032.1A CN114769360B (en) 2022-04-29 2022-04-29 Coil unloading method and system of hot rolling coiling machine

Publications (2)

Publication Number Publication Date
CN114769360A true CN114769360A (en) 2022-07-22
CN114769360B CN114769360B (en) 2023-08-15

Family

ID=82434743

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210464032.1A Active CN114769360B (en) 2022-04-29 2022-04-29 Coil unloading method and system of hot rolling coiling machine

Country Status (1)

Country Link
CN (1) CN114769360B (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07148520A (en) * 1993-11-29 1995-06-13 Ishikawajima Harima Heavy Ind Co Ltd Coiling/uncoiling equipment and its control method
CN102962296A (en) * 2012-11-14 2013-03-13 河北省首钢迁安钢铁有限责任公司 Low-temperature coiling method for thick X120 pipeline steel hot rolled coils
WO2013143734A1 (en) * 2012-03-29 2013-10-03 Siemens Vai Metals Technologies Gmbh Coiling process and apparatus for a strip
CN107052083A (en) * 2017-03-27 2017-08-18 首钢京唐钢铁联合有限责任公司 Hot rolled steel coil unloading method
CN108746248A (en) * 2018-04-17 2018-11-06 北京首钢股份有限公司 A kind of coil car coil stripping method
CN109013709A (en) * 2017-06-12 2018-12-18 鞍钢股份有限公司 Wrapper roll jump control method for automatically optimizing time sequence of hot rolling coiling
CN110064659A (en) * 2019-04-09 2019-07-30 鞍钢股份有限公司 Coil receiving control method for coil unloading trolley of hot rolling coiler
CN213079589U (en) * 2020-05-29 2021-04-30 首钢京唐钢铁联合有限责任公司 Coil unloading trolley and coil unloading system of coiling machine
CN112872099A (en) * 2021-01-13 2021-06-01 首钢京唐钢铁联合有限责任公司 Method and device for unloading steel coil
CN113351683A (en) * 2021-07-20 2021-09-07 山信软件股份有限公司 Coil stripping trolley positioning method

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07148520A (en) * 1993-11-29 1995-06-13 Ishikawajima Harima Heavy Ind Co Ltd Coiling/uncoiling equipment and its control method
WO2013143734A1 (en) * 2012-03-29 2013-10-03 Siemens Vai Metals Technologies Gmbh Coiling process and apparatus for a strip
CN102962296A (en) * 2012-11-14 2013-03-13 河北省首钢迁安钢铁有限责任公司 Low-temperature coiling method for thick X120 pipeline steel hot rolled coils
CN107052083A (en) * 2017-03-27 2017-08-18 首钢京唐钢铁联合有限责任公司 Hot rolled steel coil unloading method
CN109013709A (en) * 2017-06-12 2018-12-18 鞍钢股份有限公司 Wrapper roll jump control method for automatically optimizing time sequence of hot rolling coiling
CN108746248A (en) * 2018-04-17 2018-11-06 北京首钢股份有限公司 A kind of coil car coil stripping method
CN110064659A (en) * 2019-04-09 2019-07-30 鞍钢股份有限公司 Coil receiving control method for coil unloading trolley of hot rolling coiler
CN213079589U (en) * 2020-05-29 2021-04-30 首钢京唐钢铁联合有限责任公司 Coil unloading trolley and coil unloading system of coiling machine
CN112872099A (en) * 2021-01-13 2021-06-01 首钢京唐钢铁联合有限责任公司 Method and device for unloading steel coil
CN113351683A (en) * 2021-07-20 2021-09-07 山信软件股份有限公司 Coil stripping trolley positioning method

Also Published As

Publication number Publication date
CN114769360B (en) 2023-08-15

Similar Documents

Publication Publication Date Title
EP0286082B1 (en) Method of and apparatus for rolling directly coupled with continuous casting
CN111570517B (en) Coiling control method for producing hot formed steel by thin slab continuous casting and rolling
CN109967528B (en) Method for preventing hot-rolled strip steel SPHC high-temperature coiling scratch
CN106903167B (en) Method and device for controlling pinch roll
RU2727457C1 (en) Combined installation of continuous casting and hot rolling of metal strips
JP5509665B2 (en) Winding device and winding method for high strength thick hot rolled steel sheet
CN112605154A (en) Coiling method of steel coil
US6453709B2 (en) Cold rolling method and installation
CN114769360A (en) Coil unloading method and system for hot rolling coiler
CN111346924B (en) Anti-pressing steel control method and device and strip steel finish rolling equipment
CN114850212B (en) Method for eliminating roll mark defect on surface of strip steel in cold rolling process
RU2620223C2 (en) Inlet section of continuous stan-tandem traveling line of cold roller or travel line connected with cold rolling stan-tandem installation
CN114101334B (en) Process for eliminating thin hot rolled strip steel winding coiling machine pinch roll and control method
CN109248920B (en) Method for rapidly treating rolling waste by using coil box
JP2012139719A (en) Rolling method of high-strength steel sheet
JP4608417B2 (en) Method of temper rolling of steel strip using both continuous annealing and hot dipping facilities
CN112453065A (en) Coiling control method and device
CN112275805B (en) Control method for lower surface quality of hot-rolled strip steel
CN213033299U (en) Cold rolling recoiling production line and pulling-straightening device thereof
CN114700364B (en) Method for improving hot rolling stability of 75Cr1 saw blade steel
CN114798810B (en) Method for reducing occurrence frequency of coiling scratch of hot dip galvanized panel
CN115283458A (en) Coiling side guide early warning control method
CN114700389B (en) Strip steel coiling equipment, steel coil uncoiling control method and device
CN113102511A (en) Hot rolling line production process capable of improving production efficiency of recoiling machine
CN118595216A (en) Method for preventing steel coil from collision with fixed saddle of coil unloading trolley of cold continuous rolling mill

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant