CN110653257B - Profile steel rough rolling equipment and control method thereof - Google Patents
Profile steel rough rolling equipment and control method thereof Download PDFInfo
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- CN110653257B CN110653257B CN201810693604.7A CN201810693604A CN110653257B CN 110653257 B CN110653257 B CN 110653257B CN 201810693604 A CN201810693604 A CN 201810693604A CN 110653257 B CN110653257 B CN 110653257B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/20—Revolving, turning-over, or like manipulation of work, e.g. revolving in trio stands
- B21B39/24—Revolving, turning-over, or like manipulation of work, e.g. revolving in trio stands by tongs or grippers
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Abstract
The application provides a section steel rough rolling device and a control method thereof, relates to the technical field of automatic control, and is used for solving the problems of low working efficiency and resource waste in the process of turning steel at any angle. The equipment comprises a PLC controller, a roughing mill connected with the PLC controller, two progressive roller ways, two clamping type tilting gears and two working roller ways, wherein the two progressive roller ways, the two clamping type tilting gears and the two working roller ways are symmetrically arranged on two sides of the roughing mill along the rolling direction respectively; a billet detector is arranged on the progressive roller way, the clamping type tilting gear and the roughing mill; the clamping type tilting gear is provided with a transverse moving device, a pinch roll, a lifting device and a rotating device, wherein position sensors are arranged on the transverse moving device, the lifting device and the rotating device; both sides of the working roller way are provided with a pusher, wherein a steel turning hook is arranged in front of the pusher on the transmission side.
Description
Technical Field
The application relates to the technical field of automatic control, in particular to a section steel rough rolling device and a control method thereof.
Background
The section steel is a strip steel with certain section shape and size, and comprises 7 types of steel, such as H-shaped steel, large angle steel, joist steel, J160a, J160b, steel sheet piles, track plates and the like. The section steel has a special cross-sectional shape, so that a common billet needs to be rolled in the preparation process to obtain the section steel with a specific shape.
In the rough rolling of the steel section, a steel billet is often subjected to deformation rolling in multiple passes to obtain a specific cross section. Depending on the rolling process, certain passes may require the billet to be inverted during the back and forth rolling of the billet. The overturning angle of the box parison and the rectangular parison is usually 90 degrees or 180 degrees, and the overturning requirement can be met by overturning the steel through the overturning hook. For some special section steels, such as track shoes and the like, because inclined pass needs to be used in the rolling process, the turning angle of the special section steels can be any angle between 0 and 180 degrees, and a clamping type steel turning machine needs to be used for turning.
The tilting hook has the characteristics of simple structure and convenient control, so that in the rough rolling process, when only 90-degree or 180-degree tilting is carried out, the tilting hook is arranged on two sides of the rough rolling mill for tilting. When the rough rolling process has the turning requirement of a special angle, the turning hook is replaced by a clamping type turning machine so as to realize the turning of any angle. However, the structure and control of the clamping type tilting gear are complex relative to the tilting hook, and in the tilting process at any angle, if the tilting angle is 90 ° or 180 °, the working efficiency of the clamping type tilting gear is low, and resource waste is caused.
Disclosure of Invention
The application provides a section steel rough rolling device and a control method thereof, which solve the problems of low working efficiency and resource waste in the process of turning steel at any angle.
The first aspect of the application provides a section steel rough rolling device, which comprises a PLC controller, a rough rolling mill connected with the PLC controller, two progressive roller ways, two clamping type steel tillers and two working roller ways, wherein,
the two progressive roller ways, the two clamping type tillers and the two working roller ways are symmetrically arranged on two sides of the roughing mill along the rolling direction respectively, and the clamping type tillers are positioned between the progressive roller ways and the working roller ways; a billet detector is arranged on the progressive roller way, the clamping type tilting gear and the roughing mill;
the clamping type tilting gear is provided with a transverse moving device, a pinch roll, a lifting device and a rotating device, wherein position sensors are arranged on the transverse moving device, the lifting device and the rotating device;
and both sides of the working roller way are provided with a push bed, wherein a steel turning hook is arranged in front of the push bed positioned on the transmission side.
Optionally, the roughing mill is a two-roll reciprocating roughing mill, and a plurality of pass spaces are provided between two rolls of the roughing mill.
Optionally, the billet detector is a hot metal detection transmitter.
A second aspect of the present application provides a method for controlling the rough rolling apparatus of section steel provided in the first aspect, in each rolling pass, the PLC controller controlling the rough rolling apparatus of section steel to perform the operations of:
s1, controlling a pusher to align with the pass according to the rough rolling procedure of the section steel;
s2, judging whether the clamping type tilting gear is in a steel taking state, if so, executing the step S3 after tilting; if not, judging whether steel turning is needed according to the rough rolling procedure of the section steel, and if not, directly executing the step S3; if the steel needs to be turned, determining the turning device as a turning hook or a clamping type turning machine according to the turning angle, and executing the step S3 after the turning device finishes the turning operation;
s3, starting the working roller way and the roughing mill to roll the billet;
s4, judging whether a clamping type tilting gear is used in the next pass or not according to the preset rough rolling procedure; if so, controlling the next clamping type tilting gear to take steel;
s5, judging whether the clamping type tilting gear is used in the current pass or not according to the preset rough rolling procedure; if yes, after the steel turning of the current pass is finished and the steel feeding of the pinch rolls is finished, controlling the pinch rolls to loosen and turn over to the initial positions, and then executing step S6; if not, directly executing step S6;
s6, judging whether the clamping type tilting gear is used in the next time or not according to the preset rough rolling procedure, if so, controlling the clamping type tilting gear to move to a waiting position corresponding to the next time, and if not, moving to the initial position;
s7, when it is detected that the billet has passed through the roughing mill, the present pass is ended.
Optionally, before performing the first pass, the method further includes:
s0, detecting whether the steel turning equipment is at the initial position or not after the billet is detected to enter the progressive roller way, if so, executing the step S1; otherwise, the tilting equipment is controlled to return to the initial position, and then step S1 is executed.
Optionally, in step S2, when the tilting device is a tilting hook, controlling the progressive roller way to stop;
if the turning angle is 90 °, executing the following step S201:
s201, controlling the distance H/2 of the operation side pusher to be opened, controlling the steel turning hook to rotate, controlling the transmission side pusher provided with the steel turning hook to move along the steel turning direction, turning the steel billet, and aligning the pusher to the pass hole pattern;
if the tilting angle is 180 °, step S201 is performed twice.
Optionally, in step S2, if the turn-over device is a clamping turn-over machine, the progressive roller table is controlled to stop, and step S202 is executed,
s202, controlling the distance of H/2 for opening the push beds on the two sides, controlling the clamping type tilting machine to move to a steel taking position, ascending to a tilting height, controlling the pinch roll to clamp the steel taking position, overturning to a tilting angle, then descending to a roller way plane, and centering the push beds again.
Optionally, after step S7, the method further includes:
s8, judging whether the current pass is the last pass according to the processing procedure, if so, ending the procedure; if not, steps S1-S8 are repeated.
Optionally, in the above method, detecting whether the steel billet reaches the designated position or leaves the designated position by a hot metal detector;
if the hot metal detector detects a rising pulse signal, judging that the steel billet reaches a specified position;
and if the hot metal detector detects the falling pulse signal, judging that the steel billet leaves the designated position.
The technical scheme provided by the application comprises the following beneficial technical effects:
compared with the equipment for realizing the turnover at all angles by independently using the clamping type turnover machine and the control method thereof, the equipment provided by the application combines the turnover hook with the clamping type turnover machine, so that the turnover hook has the advantages of simple structure and convenient control, the turnover operation of 90 degrees and 180 degrees is executed, the flexible and mobile characteristic of the clamping type turnover machine and the capability of realizing the turnover at any angle is utilized, the turnover operation at a special angle is executed, the control process of rough rolling is simplified, and the rolling efficiency is improved.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.
Fig. 1 is a schematic structural diagram of a section steel rough rolling device provided in an embodiment of the present application.
Fig. 2 is a flowchart of a control method of the rough rolling equipment for section steel according to the embodiment of the present application.
Description of reference numerals:
1. a PLC controller; 2. a roughing mill; 3. a progressive roller way; 4. a clamping type tilting gear; 5. a working roller way; 6. pushing the bed; 7. and (5) turning over the steel hook.
Detailed Description
In the rough rolling process, the section steel usually needs to be rolled in multiple passes to obtain the section steel with a specific section. And (3) carrying out primary rolling deformation on the section steel, namely obtaining one pass. In the rolling process, generally, the first pass performed in the rolling process is referred to as the first pass, the pass being performed is referred to as the present pass, the next pass of the present pass is referred to as the next pass, and the next pass following the present pass is referred to as the next pass. Based on this, the technical solutions provided in the present application are explained below by the following examples.
Example 1:
referring to fig. 1, a schematic structural diagram of a rough rolling apparatus for a section steel according to an embodiment of the present application is shown. The profile steel rough rolling equipment comprises a PLC (Programmable Logic Controller) Controller, a rough rolling mill connected with the PLC Controller, two progressive roller ways, two clamping type steel tillers and two working roller ways.
The two progressive roller ways, the two clamping type tilting gears and the two working roller ways are symmetrically arranged on two sides of the roughing mill along the rolling direction respectively, and the clamping type tilting gears are located between the progressive roller ways and the working roller ways. And steel billet detectors are arranged on the progressive roller way, the clamping type tilting gear and the roughing mill. The clamping type tilting gear is provided with a transverse moving device, a pinch roll, a lifting device and a rotating device, and position sensors are arranged on the transverse moving device, the lifting device and the rotating device. Both sides of the working roller way are provided with a push bed, wherein a steel turning hook is arranged in front of the push bed positioned at the transmission side.
In this embodiment, the roughing mill is a two-roll reciprocating roughing mill in which a plurality of pass spaces are provided between two rolls. For example, taking the orientation shown in fig. 1 as an example, in the present pass, the billet is rolled from the left side of the roughing mill through the rollers and then enters the right side of the roughing mill, and then, in the next pass, the billet can also be rolled from the right side of the roughing mill through the rollers and then enters the left side of the roughing mill.
It should be noted that the equipment on both sides of the roughing mill are arranged in the same way, that is, the same progressive roller way, clamping type tilting gear, working roller way, tilting hook and pusher are arranged. For the sake of description, in the embodiments of the present application, two identical machines located in symmetrical positions are not distinguished by name, but are defined according to the passes they perform. For example, in the process of rolling a billet from the left side of the roughing mill into the right side of the roughing mill through the rolls in the orientation shown in fig. 1, the clamping type tilter on the left side of the roughing mill is called a present-pass clamping type tilter, and the clamping type tilter on the right side of the roughing mill is called a next-pass clamping type tilter. The push bench on the left side of the roughing mill is called the present-pass push bench, and the push bench on the right side of the roughing mill is called the next-pass push bench.
The billet detector is a hot metal detection transmitter, and can also be other types of detectors, such as an infrared detector and the like. The billet detector is used for detecting whether the billet reaches the designated position or whether the billet leaves the designated position. Taking the hot metal detector as an example, if the hot metal detector detects a rising pulse signal, that is, if the pulse signal is detected from the absence, it is determined that the billet reaches the specified position. When the hot metal detector detects a falling pulse signal, that is, whether the pulse signal is present or absent, it is determined that the billet is separated from the specified position.
The hot metal detector is set at different detection positions according to the requirements of the rough rolling process. For example, the device is arranged on the progressive roller way and used for detecting whether the steel billet reaches the progressive roller way; the clamping type tilting machine is arranged on the clamping type tilting machine and is used for detecting whether a steel billet is about to enter a working roller way or not and detecting whether the clamping type tilting machine is in a steel taking state or not; and the detection device is arranged on the roughing mill and used for detecting whether the steel billet reaches the roughing mill roller or whether the steel billet leaves the roughing mill roller.
The specific structure of the clamping type tilting gear is referred to the prior art, and the detailed description is omitted in the application. However, in the clamping type tilting machine, the traverse device is connected to a traverse hydraulic cylinder, the lifting device is connected to a lifting hydraulic cylinder, and the rotating device is connected to a rotating hydraulic cylinder, and the devices are driven to move. And all be equipped with position sensor on this sideslip pneumatic cylinder, promotion pneumatic cylinder and the rotary hydraulic cylinder for the positional information of each device is fed back in real time to the accurate control of realization equipment.
Example 2:
referring to fig. 2, a flowchart of a control method of a rough rolling apparatus for section steel according to an embodiment of the present disclosure is provided. The method for controlling the rough rolling equipment of the section steel provided in example 1 includes the following steps S0 to S8, which are specifically shown below.
Step S0, detecting whether the steel turning equipment is at the initial position or not after the steel billet is detected to enter the progressive roller way, if so, executing step S1; otherwise, the tilting equipment is controlled to return to the initial position, and then step S1 is executed.
In this step, whether the billet reaches the set position is detected by a billet detector provided on the current-pass progressive table. When the steel billet reaches the detection position of the steel billet detector, the steel billet detector receives a rising pulse signal, namely the steel billet detector detects the existence of the pulse signal, and when the PLC controller receives the rising pulse signal, the steel billet is judged to reach the set position.
It should be noted that this step is performed only before the first pass of the rough rolling process, and is used to restore all the components and devices of the rough rolling mill to the initial positions before starting rolling, so that the PLC controller can accurately control the rough rolling equipment for the section steel. The part needing to be restored to the initial position comprises a roughing mill, a progressive roller way, a working roller way, a clamping type tilting gear, a push machine and a tilting hook. Wherein, for the clamping type tilting gear, the traversing device, the pinch roll, the lifting device and the rotating device are required to be restored to the initial positions. The initial position is determined according to the device itself, and the initial positions of different devices are different, which is not limited in the present application.
After the step S0 is completed, the PLC controller will control the rough rolling equipment of the section steel to perform rolling of each pass according to the rolling process, and in each pass, the rough rolling equipment of the section steel performs the following steps:
and step S1, controlling the pusher to align with the pass of the current pass according to the rough rolling procedure of the section steel.
In order to meet the requirements of automatic production and accelerate the rolling efficiency, a plurality of hole patterns are usually arranged between two rollers of a roughing mill so as to meet the hole pattern requirements of different passes, and the roughing mill provided by the application can be provided with 15 hole pattern spaces at most so as to realize the rolling of 15 passes at most.
In this step, the PLC controller, after determining the pass used for the current pass, controls the pusher movements to align the pass for the current pass so that the billet can be correctly aligned with the pass to be rolled and properly straightened during the subsequent rolling.
Step S2, judging whether the clamping type tilting gear is in a steel taking state, if so, executing step S3 after tilting; if not, judging whether steel turning is needed according to the rough rolling procedure of the section steel, and if not, directly executing the step S3; if the steel needs to be turned, determining the turning device as a turning hook or a clamping type turning machine according to the turning angle, and executing the step S3 after the turning device finishes the turning operation;
illustratively, when the current pass is the first pass, the clamping type tilting gear is not necessarily in a steel taking state, at the moment, whether steel needs to be tilted is judged directly according to a rough rolling procedure of the section steel, and corresponding steps are executed according to a judgment result.
Alternatively, in the case where the clamping type tilting gear is used in the previous pass of the current pass, and the clamping type tilting gear is also used in the current pass, the clamping type tilting gear of the current pass may perform the steel taking operation during the rolling process of the previous pass, specifically, see the following step S4. Therefore, when the previous pass is finished, the clamping type tilting gear of the present pass is in the steel-taking state, and in this case, step S3 is directly executed.
Or when the clamping type tilting gear is not used in the last pass, the clamping type tilting gear is not necessarily in a steel taking state, whether the steel needs to be turned is judged directly according to the rough rolling procedure of the section steel, and corresponding steps are executed according to the judgment result.
In this step, determining the turning device as a hook or a clamp type tilter according to the tilting angle includes: and when the tilting angle is 90 degrees or 180 degrees, determining that the tilting device is a tilting hook. And when the turn-over angle is not 0 degrees, 90 degrees or 180 degrees, determining the turn-over device as the clamping type turn-over machine.
When the turn-over device is a turn-over hook, the progressive roller way is controlled to stop, and the following turn-over operation is executed:
if the turning angle is 90 °, executing the following step S201:
and step S201, controlling the distance H/2 of the opening of the operation side pusher, controlling the steel turning hook to rotate, controlling the transmission side pusher provided with the steel turning hook to move along the steel turning direction, turning the steel billet, and aligning the pusher to the pass.
In the 90-degree steel turning process, when the operating side push machine is opened for a distance of H/2, a sufficient space for turning the steel billet is formed between the two push machines, at the moment, the steel turning hook rotates to lift the steel billet from the bottom of the steel billet, the transmission side push machine moves along the steel turning direction, the other end of the steel billet abuts against the operating side push machine, so that the steel billet is turned by 90 degrees under the work of the steel turning hook and the transmission side push machine, and then the push machines are controlled to be aligned to the pass of the pass.
If the tilting angle is 180 °, step S201 is performed twice. That is, the billet is turned 180 ° by two 90 ° turning operations.
It should be noted that H is the height of the steel billet before rolling in the current pass, and since the steel billet is deformed in each pass, the value of H is different in different passes, and the specific value is determined according to the process parameters.
When the turn-over device is a clamping turn-over machine, the progressive roller way is controlled to stop, the following step S202 is executed,
and S202, controlling the distance of H/2 for opening the push beds on the two sides, controlling the clamping type tilting machine to move to a steel taking position, raising the position to a tilting height, controlling the pinch rolls to clamp the steel taking position, turning the steel taking position to a tilting angle, then lowering the position to a roller plane, and aligning the push beds to the pass hole pattern again.
And step S3, starting the working roller way and the roughing mill to roll the billet.
If the steel is not turned or the steel is turned by using the turning hook in the current pass, the roughing mill and the working roller way are directly started, so that the steel billet is sent into the roughing mill under the action of the working roller way to start rolling.
And if the clamping type tilting gear is used for tilting in the current pass, controlling the pinch rolls to cooperatively act after the working roller way and the roughing mill are started, and sending the steel billet into the roughing mill to start rolling. The purpose of the cooperative action of the pinch rolls is to keep the steel billet at a turning angle so as to ensure the smooth occlusion of the roughing mill.
Step S4, judging whether a clamping type tilting gear is used in the next pass or not according to a preset rough rolling procedure; if so, controlling the next clamping type tilting gear to take steel.
In the multiple passes of a rough rolling procedure, the steel turning angles of the continuous passes are all special angles (namely angles except 0 degrees, 90 degrees and 180 degrees), so that the clamping type steel turning machine is required to be used in the continuous passes. Under the condition, in order to improve the rolling efficiency, close connection among all passes is achieved, in the rolling process of the pass, when the billet is detected to pass through the roughing mill, the clamping type tilting gear of the next pass is controlled to translate to a steel taking position, and the rotating device, the lifting device and the pinch roll are controlled to act cooperatively to execute steel taking operation. And when the steel billet is detected to completely pass through the roughing mill, the pinch rolls stop rotating and keep the steel taking posture.
The step enables the clamping type tilting gear to directly realize the next steel taking operation in the rolling process of the current pass, and is beneficial to improving the rolling efficiency.
Step S5, judging whether the clamping type tilting gear is used in the current pass or not according to the preset rough rolling procedure; if yes, after the steel turning of the current pass is finished and the steel feeding of the pinch rolls is finished, controlling the pinch rolls to loosen and turn over to the initial positions, and then executing step S6; if not, directly executing step S6;
if the clamping type tilting gear is used in the pass, the pinch roll is necessarily in an inclined position, and the pinch roll is restored to the initial position in advance, so that the efficiency of next-pass tilting is improved. The initial position of the pinch roll is a position where the pinch roll is perpendicular to the ground.
And step S6, judging whether the clamping type tilting gear is used in the next time or not according to the preset rough rolling procedure, if so, controlling the clamping type tilting gear to move to a waiting position corresponding to the next time, and if not, moving to the initial position.
In this step, the pinch rolls are in the initial position. And the waiting position corresponding to the next pass refers to the turning position of the clamping type steel turning machine in the steel turning process of the next pass.
In step S7, after it is detected that the billet has passed through the roughing mill, the present pass is ended.
Step S8, judging whether the current pass is the last pass according to the processing procedure, if so, ending the procedure; if not, steps S1-S8 are repeated.
In the above method, whether the billet reaches the specified position or whether the billet leaves the specified position is detected by a hot metal detector. If the hot metal detector detects the rising pulse signal, namely detects that the pulse signal exists from the beginning, the billet is judged to reach the designated position. When the hot metal detector detects a falling pulse signal, that is, whether the pulse signal is present or absent, it is determined that the billet is separated from the specified position.
In summary, in the rough rolling process, the rough rolling equipment and the control method for the section steel provided by the application combine the steel turning hook and the clamping type steel turning machine, take advantages of the steel turning hook, utilize the characteristics of simple structure and convenient control of the steel turning hook, execute the steel turning operation of 90 degrees and 180 degrees, utilize the characteristics of flexibility and maneuverability of the clamping type steel turning machine and capability of realizing steel turning at any angle, execute the steel turning operation at a special angle, simplify the control process of rough rolling and improve the rolling efficiency compared with the equipment which independently uses the clamping type steel turning machine to realize steel turning at all angles.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
It is to be understood that the present application is not limited to what has been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (9)
1. The profile steel rough rolling equipment is characterized by comprising a PLC (programmable logic controller), a rough rolling mill connected with the PLC, two progressive roller ways, two clamping type tilting gears and two working roller ways, wherein,
the two progressive roller ways, the two clamping type tillers and the two working roller ways are symmetrically arranged on two sides of the roughing mill along the rolling direction respectively, and the clamping type tillers are positioned between the progressive roller ways and the working roller ways; a billet detector is arranged on the progressive roller way, the clamping type tilting gear and the roughing mill;
the clamping type tilting gear is provided with a transverse moving device, a pinch roll, a lifting device and a rotating device, wherein position sensors are arranged on the transverse moving device, the lifting device and the rotating device;
and both sides of the working roller way are provided with a push bed, wherein a steel turning hook is arranged in front of the push bed positioned on the transmission side.
2. The rough rolling equipment of section steel according to claim 1, wherein the rough rolling mill is a two-roll reciprocating rough rolling mill, and a plurality of pass spaces are provided between two rolls of the rough rolling mill.
3. The rough rolling equipment of section steel according to claim 1, wherein the billet detector is a hot metal detection sensor.
4. A control method of a rough rolling facility of section steel according to any one of claims 1 to 3, wherein in each rolling pass, the PLC controller controls the rough rolling facility of section steel to perform the following operations:
s1, controlling a pusher to align with the pass according to the rough rolling procedure of the section steel;
s2, judging whether the clamping type tilting gear is in a steel taking state, if so, executing the step S3 after tilting; if not, judging whether steel turning is needed according to the rough rolling procedure of the section steel, and if not, directly executing the step S3; if the steel needs to be turned, determining the turning device as a turning hook or a clamping type turning machine according to the turning angle, and executing the step S3 after the turning device finishes the turning operation;
s3, starting the working roller way and the roughing mill to roll the billet;
s4, judging whether a clamping type tilting gear is used in the next pass or not according to the preset rough rolling procedure; if so, controlling the next clamping type tilting gear to take steel;
s5, judging whether the clamping type tilting gear is used in the current pass or not according to the preset rough rolling procedure; if yes, after the steel turning of the current pass is finished and the steel feeding of the pinch rolls is finished, controlling the pinch rolls to loosen and turn over to the initial positions, and then executing step S6; if not, directly executing step S6;
s6, judging whether the clamping type tilting gear is used in the next time or not according to the preset rough rolling procedure, if so, controlling the clamping type tilting gear to move to a waiting position corresponding to the next time, and if not, moving to the initial position;
s7, when it is detected that the billet has passed through the roughing mill, the present pass is ended.
5. The control method of a section bar rough rolling apparatus according to claim 4, characterized in that before performing the first pass, the method further comprises:
s0, detecting whether the steel turning equipment is at the initial position or not after the billet is detected to enter the progressive roller way, if so, executing the step S1; otherwise, the tilting equipment is controlled to return to the initial position, and then step S1 is executed.
6. The control method of the rough rolling equipment of section steel according to claim 4, wherein in step S2:
when the turning device is a turning hook, controlling the progressive roller way to stop;
if the turning angle is 90 °, executing the following step S201:
s201, controlling the distance H/2 of the operation side pusher to be opened, controlling the steel turning hook to rotate, controlling the transmission side pusher provided with the steel turning hook to move along the steel turning direction, turning the steel billet, and aligning the pusher to the pass hole pattern;
if the tilting angle is 180 °, step S201 is performed twice.
7. The method of controlling a rough rolling facility of section steel according to claim 4, wherein, in step S2,
when the turn-over device is a clamping turn-over machine, the progressive roller way is controlled to stop, the following step S202 is executed,
s202, controlling the distance of H/2 for opening the push beds on the two sides, controlling the clamping type tilting machine to move to a steel taking position, ascending to a tilting height, controlling the pinch roll to clamp the steel taking position, overturning to a tilting angle, then descending to a roller way plane, and centering the push beds again.
8. The control method of the rough rolling equipment of section steel according to claim 4, characterized in that after step S7, the method further comprises:
s8, judging whether the current pass is the last pass according to the processing procedure, if so, ending the procedure; if not, steps S1-S8 are repeated.
9. The control method of the section steel roughing apparatus according to claim 4, characterized in that whether said steel slab reaches a specified position or leaves a specified position is detected by a hot metal detector;
if the hot metal detector detects a rising pulse signal, judging that the steel billet reaches a specified position;
and if the hot metal detector detects the falling pulse signal, judging that the steel billet leaves the designated position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN109513746A (en) * | 2018-12-05 | 2019-03-26 | 德龙钢铁有限公司 | A kind of hot-strip method and rough rolling device for small dimension continuous casting billet |
| CN113798335A (en) * | 2021-09-18 | 2021-12-17 | 河北永洋特钢集团有限公司 | Light rail section steel rolling equipment and process based on pre-bending cooling technology |
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| JPS63123514A (en) * | 1986-11-11 | 1988-05-27 | Kawasaki Steel Corp | Transferring roller table |
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| CN107537863A (en) * | 2017-10-13 | 2018-01-05 | 北京金自天正智能控制股份有限公司 | A kind of control method for fully automatic in H profile steel blooming mill area |
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| JPS63123514A (en) * | 1986-11-11 | 1988-05-27 | Kawasaki Steel Corp | Transferring roller table |
| CN103170514A (en) * | 2013-03-04 | 2013-06-26 | 安阳市常兴轧钢有限责任公司 | Automatic tilting gear |
| CN103302116A (en) * | 2013-05-21 | 2013-09-18 | 唐山钢铁集团微尔自动化有限公司 | 270-degree turnover method for hook turn-over device at hot rolled section steel production line |
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