CN116984382A - Control method and system of tapping heat preservation roller way - Google Patents
Control method and system of tapping heat preservation roller way Download PDFInfo
- Publication number
- CN116984382A CN116984382A CN202310859227.0A CN202310859227A CN116984382A CN 116984382 A CN116984382 A CN 116984382A CN 202310859227 A CN202310859227 A CN 202310859227A CN 116984382 A CN116984382 A CN 116984382A
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- roller way
- speed
- heat preservation
- heat
- steel
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- 238000004321 preservation Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000010079 rubber tapping Methods 0.000 title claims abstract description 22
- 238000005096 rolling process Methods 0.000 claims abstract description 52
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 46
- 239000010959 steel Substances 0.000 claims abstract description 46
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 230000001360 synchronised effect Effects 0.000 claims abstract description 14
- 238000009413 insulation Methods 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 9
- 230000003993 interaction Effects 0.000 claims description 4
- 238000012840 feeding operation Methods 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 description 5
- 241000951498 Brachypteraciidae Species 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 4
- 101100347655 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) NAB3 gene Proteins 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- B21B37/46—Roll speed or drive motor control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- 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
- B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
The invention discloses a control method and a system of a tapping heat preservation roller way, wherein the method comprises the following steps: a first heat detector is arranged beside an initial roller path of the heat preservation roller way, a second heat detector is arranged beside a tail end roller path of the heat preservation roller way, the first heat detector is close to a heating furnace, and the second heat detector is close to a rolling mill; when the first heat detector detects the billet, the speed of a roller way in the heating furnace is switched to keep synchronous with the speed of the heat preservation roller way; when the current billet enters the rolling mill along the heat preservation roller way and receives the biting steel signal, the speed of the heat preservation roller way is switched to keep synchronous with the speed of the rolling mill; when the second thermal detector detects that the signal falling edge arrives, the speed of the heat preservation roller way is increased, so that the next billet rapidly advances along the heat preservation roller way until the next steel biting signal arrives. According to the invention, the speed of the heat-preserving roller way is adjusted in a targeted manner, so that the roller way abrasion and the electric energy loss are avoided, the cost for replacing the roller way and spare parts is saved, and the miswork delay is reduced.
Description
Technical Field
The invention relates to the technical field of steel rolling, in particular to a control method and a control system of a tapping heat-preserving roller way.
Background
In the workshop of steel rolling mill mainly producing more than 20 threads and less than 82 round steel, the heating furnace adopts a heat accumulating step heating furnace, a section of heat-preserving roller way is arranged outside the furnace outlet, and because the heat-preserving roller way is controlled by a frequency converter, the heat-preserving roller way operates for a long time at a higher frequency (blanks are bitten into the rolling mill during production), and the blanks of the heating furnace are controlled to be tapped by adjusting tapping delay, so that the following problems exist in long-term use: (1) after the blank is bitten into the rolling mill, the linear speed of the rolling mill is obviously lower than that of the heat preservation roller way, so that the roller surfaces of a plurality of ground rollers behind the heat preservation roller way are seriously worn; (2) the electric energy waste is caused; (3) if not replaced in time after the roller bed is worn, the elevation of the head of the billet is lower than the surface of the heat-preserving roller bed when the head of the billet runs at the worn position, the head of the billet can strike the roller bed at the back, so that the roller bearing is damaged, the roller bed transmission efficiency is reduced, the roller inlet guide and guard are impacted, and the like.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a control method and a control system of a tapping heat-preserving roller way, which are used for solving at least one technical problem.
According to an aspect of the specification, there is provided a control method of a tapping thermal insulation roller way, the method comprising:
a first heat detector is arranged beside an initial roller path of the heat preservation roller way, a second heat detector is arranged beside a tail end roller path of the heat preservation roller way, the first heat detector is close to a heating furnace, and the second heat detector is close to a rolling mill;
when the first heat detector detects the billet, the speed of a roller way in the heating furnace is switched to keep synchronous with the speed of the heat preservation roller way;
when the current billet enters the rolling mill along the heat preservation roller way and receives the biting steel signal, the speed of the heat preservation roller way is switched to keep synchronous with the speed of the rolling mill;
when the second thermal detector detects that the signal falling edge arrives, the speed of the heat preservation roller way is increased, so that the next billet rapidly advances along the heat preservation roller way until the next steel biting signal arrives.
According to the technical scheme, the speed of the heat preservation roller way is adjusted in a targeted mode, so that roller way abrasion and electric energy loss are avoided, the cost of replacing the roller way and spare parts is saved, and the miswork time delay is reduced.
As a further technical solution, the method further includes: when the next steel biting signal is received, the speed of the heat preservation roller way is switched to keep synchronous with the speed of the rolling mill.
As a further technical solution, the method further includes: when the second thermal detector detects that the signal falling edge arrives, the speed of the heat preservation roller way is determined according to the distance between the previous steel billet and the next steel billet.
As a further technical solution, the method further includes: when the second thermal detector detects that the signal falling edge arrives, the speed of the heat preservation roller way is determined by adjusting the steel delay.
As a further technical solution, the distance between the second thermal detector and the rolling mill is smaller than the length of the billet.
As a further technical solution, the method further includes: after the first thermal detector detects the billet signal and the signal lasts for a preset time, a steel demand signal is sent again.
As a further technical solution, the method further includes: after the steel-needing signal is sent out, the steel-needing delay time is set, and then the steel-feeding operation is started.
According to an aspect of the present disclosure, there is provided a control system for a tapping and heat-preserving roller way, including a PLC controller configured to: the device is connected with the heat-preserving roller way and used for controlling the running speed of the heat-preserving roller way; the device is connected with a furnace discharging roller way in the heating furnace and is used for controlling the running speed of the furnace discharging roller way; the first heat detector is connected with the furnace roller way, and is used for switching the speed of the furnace roller way according to the signal of the first heat detector; the second thermal detector is connected with the first thermal detector and is used for switching the speed of the thermal insulation roller way according to the signal of the second thermal detector; the device is connected with a man-machine interaction interface and is used for setting and displaying parameters of the rolling mill.
As a further solution, the rolling mill parameters include, but are not limited to, rolling specification, finishing speed, table of rolling parameters, desired steel delay.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, after a blank is bitten into a rolling mill, the speed of the heat preservation roller way is regulated to keep synchronous with the speed of the rolling mill, so that the problem of serious roller surface abrasion of a plurality of ground rollers behind the heat preservation roller way due to the fact that the linear speed of the rolling mill is lower than the linear speed of the heat preservation roller way is avoided.
When the second thermal detector detects the falling edge of the signal, the speed of the heat preservation roller way is regulated to enable the following billet to rapidly advance, and the next billet can be controlled to catch up with the previous billet just at the rolling mill under the optimal condition, so that the utilization rate is improved, and the electric energy waste caused by the fact that the previous billet is thrown and the next billet is far away from the rolling mill is avoided.
Drawings
Fig. 1 is a schematic flow chart of a control method of a tapping heat preservation roller way according to an embodiment of the invention.
Fig. 2 is a schematic view of a tapping insulation roller way according to an embodiment of the invention.
Detailed Description
The following description of the embodiments of the present invention will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
When the existing rolling mill runs, the linear speed of the rolling mill is obviously lower than that of the heat-preserving roller way after blanks are bitten into the rolling mill, so that the roller surfaces of a plurality of ground rollers behind the heat-preserving roller way are seriously worn; moreover, because the distance interval between the former billet and the latter billet is larger, electric energy waste is caused; in addition, if not in time change after the roll table wearing and tearing, the elevation is less than the heat preservation roll table roll surface when the billet head is in wearing and tearing position operation, can strike the roll table behind, causes the roller bearing damage, reduces roll table transmission efficiency, striking roll entry guide and defend scheduling problem, when the billet is not good bitten into the rolling mill, operating personnel further increase heat preservation roll table speed among the prior art, and the condition can further worsen to appear because of the billet bitten into the rolling mill and cause the mistake.
The invention provides a control method of a discharging heat-preserving roller way, which aims at adjusting the speed of the heat-preserving roller way, avoiding the abrasion and the electric energy loss of the roller way, saving the cost of replacing the roller way and spare parts and reducing the time delay of miswork.
As shown in fig. 1, the method includes:
a first heat detector is arranged beside an initial roller path of the heat preservation roller way, a second heat detector is arranged beside a tail end roller path of the heat preservation roller way, the first heat detector is close to a heating furnace, and the second heat detector is close to a rolling mill;
when the first heat detector detects the billet, the speed of a roller way in the heating furnace is switched to keep synchronous with the speed of the heat preservation roller way;
when the current billet enters the rolling mill along the heat preservation roller way and receives the biting steel signal, the speed of the heat preservation roller way is switched to keep synchronous with the speed of the rolling mill;
when the second thermal detector detects that the signal falling edge arrives, the speed of the heat preservation roller way is increased, so that the next billet rapidly advances along the heat preservation roller way until the next steel biting signal arrives.
Optionally, the method further comprises: when the next steel biting signal is received, the speed of the heat preservation roller way is switched to keep synchronous with the speed of the rolling mill.
Optionally, the method further comprises: when the second thermal detector detects that the signal falling edge arrives, the speed of the heat preservation roller way is determined according to the distance between the previous steel billet and the next steel billet.
Optionally, the method further comprises: when the second thermal detector detects that the signal falling edge arrives, the speed of the heat preservation roller way is determined by adjusting the steel delay.
Optionally, the distance between the second thermal detector and the rolling mill is less than the length of the billet.
Optionally, the method further comprises: after the first thermal detector detects the billet signal and the signal lasts for a preset time, a steel demand signal is sent again. The preset time here may be 2.5 seconds.
Optionally, the method further comprises: after the steel-needing signal is sent out, the steel-needing delay time is set, and then the steel-feeding operation is started. The delay setting of the steel is slightly different according to the specification and the rolling adjustment parameters, and is generally 4-6S.
The invention also provides a control system of the tapping heat preservation roller way, which comprises a PLC controller, wherein the PLC controller is configured to: the device is connected with the heat-preserving roller way and used for controlling the running speed of the heat-preserving roller way; the device is connected with a furnace discharging roller way in the heating furnace and is used for controlling the running speed of the furnace discharging roller way; the first heat detector is connected with the furnace roller way, and is used for switching the speed of the furnace roller way according to the signal of the first heat detector; the second thermal detector is connected with the first thermal detector and is used for switching the speed of the thermal insulation roller way according to the signal of the second thermal detector; the device is connected with a man-machine interaction interface and is used for setting and displaying parameters of the rolling mill. The system is used for realizing the steps of the method.
As shown in figure 2, the heating furnace is arranged on the left side, the first roller way beside the heating furnace is the last roller way of the furnace discharging in the furnace, the 2 nd to 10 th roller ways from left to right are heat preservation roller ways, the pinch roller is arranged behind the heat preservation roller ways, and then the 1 st rolling mill is arranged behind the heat preservation roller ways. The billet is a fixed weight billet of 160mm x 9 m.
During normal production, an operator can set parameters such as rolling specification, finishing rolling speed, a rolling parameter table, steel delay setting and the like in an HMI human-machine interface in advance.
The automatic tapping flow is as follows:
tapping in a heating furnace, and thermally detecting red steel through a heat preservation roller way HMD 1; when the heat detection detects a signal, a steel-required signal is sent after 2.5 seconds, after the steel-required signal is sent, the walking beam starts to act after time delay (steel-required time delay setting), the steel billet in the furnace is lifted up, then advances and descends, the steel billet is placed on the internal beam, the steel billet descends to the original point after being in place, each cycle of the walking beam is the same, the step Liang Zhouqi of the heating furnace is 30S (the deviation is very small), when the walking beam descends by about half (the steel billet is just placed on the fixed beam), the furnace discharging roller way starts to discharge the forefront steel billet, the time from the beginning of the movement of the walking beam to the steel placing on the roller way is about 22S, namely, the time of the previous steel billet head passing through the HMD1 is 2.5+ the time-required time delay setting, the steel-required time delay setting is slightly different according to the specification and the rolling adjustment parameters, namely, the distance between the steel billet head and the upper roller way is 4-6S, namely the distance between the steel billet and the upper roller way is about 22S: the distance +V between the head of the billet in the furnace and the HMD1 is kept to be (2.5+4+22) -9,V as the speed of a heat-preserving roller way, the original speed of the heat-preserving roller way is much greater than that of a No. 1 rolling mill, and the speed is not automatically regulated, so that the method has a plurality of problems in actual use.
According to measurement and calculation, when a billet falls on a furnace roller way, a roller way runs at a high speed, red billets are sent out, when the HMD1 detects the billet, the furnace roller way speed is switched to be synchronous with a heat preservation roller way (the heat preservation roller way speed is prevented from being slow, the furnace roller way speed is fast to grind the ground roller of the furnace roller way), when the HMD2 (which is originally a thermal detection used by a pinch roller, we slightly move a little to make the HMD2 on the last roller of the heat preservation roller way) detects the falling edge of a signal, the heat preservation roller way is switched to be at a high speed, the following steel starts to track the preceding steel, the rising speed is roughly regulated according to the actual distance between the two steels, an operator can also optimize by regulating the steel delay setting, just control to track the billet at a 1# rolling mill, and when the next steel biting signal of the 1# rolling mill throws steel, the heat preservation roller way is synchronous with the 1# rolling mill speed, and circulation is performed.
In the description of the present specification, reference to the terms "one embodiment," "certain embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; these modifications or substitutions do not depart from the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present invention.
Claims (9)
1. The control method of the tapping heat preservation roller way is characterized by comprising the following steps:
a first heat detector is arranged beside an initial roller path of the heat preservation roller way, a second heat detector is arranged beside a tail end roller path of the heat preservation roller way, the first heat detector is close to a heating furnace, and the second heat detector is close to a rolling mill;
when the first heat detector detects the billet, the speed of a roller way in the heating furnace is switched to keep synchronous with the speed of the heat preservation roller way;
when the current billet enters the rolling mill along the heat preservation roller way and receives the biting steel signal, the speed of the heat preservation roller way is switched to keep synchronous with the speed of the rolling mill;
when the second thermal detector detects that the signal falling edge arrives, the speed of the heat preservation roller way is increased, so that the next billet rapidly advances along the heat preservation roller way until the next steel biting signal arrives.
2. The method for controlling a tapping insulation roller way according to claim 1, further comprising: when the next steel biting signal is received, the speed of the heat preservation roller way is switched to keep synchronous with the speed of the rolling mill.
3. The method for controlling a tapping insulation roller way according to claim 1, further comprising: when the second thermal detector detects that the signal falling edge arrives, the speed of the heat preservation roller way is determined according to the distance between the previous steel billet and the next steel billet.
4. The method for controlling a tapping insulation roller way according to claim 1, further comprising: when the second thermal detector detects that the signal falling edge arrives, the speed of the heat preservation roller way is determined by adjusting the steel delay.
5. The method for controlling a tapping and heat preserving roller way according to claim 1, wherein the distance between the second heat detector and the rolling mill is smaller than the length of the billet.
6. The method for controlling a tapping insulation roller way according to claim 1, further comprising: after the first thermal detector detects the billet signal and the signal lasts for a preset time, a steel demand signal is sent again.
7. The method for controlling a tapping insulation roller way according to claim 6, further comprising: after the steel-needing signal is sent out, the steel-needing delay time is set, and then the steel-feeding operation is started.
8. The control system of the tapping heat preservation roller way is characterized by comprising a PLC controller, wherein the PLC controller is configured to: the device is connected with the heat-preserving roller way and used for controlling the running speed of the heat-preserving roller way; the device is connected with a furnace discharging roller way in the heating furnace and is used for controlling the running speed of the furnace discharging roller way; the first heat detector is connected with the furnace roller way, and is used for switching the speed of the furnace roller way according to the signal of the first heat detector; the second thermal detector is connected with the first thermal detector and is used for switching the speed of the thermal insulation roller way according to the signal of the second thermal detector; the device is connected with a man-machine interaction interface and is used for setting and displaying parameters of the rolling mill.
9. A control system for a tapping run according to claim 8, wherein the rolling mill parameters include, but are not limited to, rolling gauge, finishing speed, table of rolling parameters, delay time for steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310859227.0A CN116984382A (en) | 2023-07-13 | 2023-07-13 | Control method and system of tapping heat preservation roller way |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310859227.0A CN116984382A (en) | 2023-07-13 | 2023-07-13 | Control method and system of tapping heat preservation roller way |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116984382A true CN116984382A (en) | 2023-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310859227.0A Pending CN116984382A (en) | 2023-07-13 | 2023-07-13 | Control method and system of tapping heat preservation roller way |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116984382A (en) |
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2023
- 2023-07-13 CN CN202310859227.0A patent/CN116984382A/en active Pending
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