CN111440942B - Control method for preventing strip breakage in annealing furnace of cold rolling treatment line - Google Patents
Control method for preventing strip breakage in annealing furnace of cold rolling treatment line Download PDFInfo
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- CN111440942B CN111440942B CN202010300894.1A CN202010300894A CN111440942B CN 111440942 B CN111440942 B CN 111440942B CN 202010300894 A CN202010300894 A CN 202010300894A CN 111440942 B CN111440942 B CN 111440942B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/562—Details
- C21D9/564—Tension control
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- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Control Of Heat Treatment Processes (AREA)
Abstract
The invention discloses a control method for preventing strip breakage in a cold rolling processing line annealing furnace, which adds a backup protection function on an original deviation correcting system, wherein a primary control system acquires data of deviation correcting equipment through a communication protocol, and the ramp speed limit, an early warning prompt system and a tension compensation system of the primary control system are controlled, so that the ramp speed limit of starting strip steel is 60m/min when the strip steel deviates 50mm from a production center line, even if the incoming material plate type is poor, the deviation degree of the strip steel can be obviously reduced, the serious deviation of the strip steel in the furnace is effectively avoided, the strip breakage accident in the annealing furnace is greatly reduced, and the continuous and reliable operation of the cold rolling processing line is ensured.
Description
Technical Field
The invention relates to the technical field of annealing furnaces of cold rolling treatment lines, in particular to a control method for preventing strip breakage in an annealing furnace of a cold rolling treatment line.
Background
The cold rolling vertical annealing furnace connects the strip steel end to end through the narrow lap welding technology, realizes continuous high-efficiency operation in the annealing furnace, has highly automatic production process and has the maximum speed of the process section of 370m/min per minute. When the shape of the fed strip is poor (such as wedge-shaped difference, camber, wave shape and drift) during high-speed running of the strip steel, once the deviation correcting capability of the EMG deviation correcting system is exceeded, the strip steel running at high speed is easy to scratch the furnace wall of the annealing furnace, and strip breakage accidents are easy to happen under the action of strip steel tension. The traditional method for preventing the deviation in the furnace intervenes manual control by operators, so that the belt breakage accident caused by the deviation is difficult to effectively control in time.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a control method for preventing strip breakage in a cold rolling processing line annealing furnace.
The technical scheme adopted by the invention for solving the technical problems is as follows: a control method for preventing strip breakage in a cold rolling processing line annealing furnace comprises the following steps:
1) the strip steel radar position detection sensor of the EMG radar deviation rectifying equipment transmits data to the data processing module through the optical fiber, the data processing module transmits the data to the radar data processing server, and then the radar data processing server transmits the data to the digital electric control controller of the EMG radar deviation rectifying equipment through profibus DP communication;
2) the digital electric controller transmits the data of the strip steel radar position detection sensor to a main line process PLC through profibus DP communication;
3) the position of an electric execution cylinder of the EMG radar deviation rectifying equipment is detected by a high-precision position sensor, the data of the position sensor is connected with an EMG special communication module of the EMG radar deviation rectifying equipment through a CAN OPEN communication line, the EMG special communication module is in communication connection with a digital electric control controller through a profibus DP, and the position data of the electric execution cylinder is transmitted to a main line process PLC;
4) when the stroke of the EMG electric actuating cylinder exceeds 80%, the process operating room gives out sound and light prompts to prompt operators to adjust the tension of the strip steel deviation area and increase the set value of the tension of the annealing furnace deviation area by 30-45%;
5) collecting data of EMG radar deviation rectifying equipment by a main line process PLC (programmable logic controller), specifically data of strip steel deviating from the central position of a production line in a furnace, judging by the main line process PLC according to the data of the strip steel deviating from the central position of the production line, and automatically starting ramp to limit the speed to be less than or equal to 60 m/min;
6) when the strip steel deviates 100mm from the production center line, the process section of the primary control system is started and triggered to stop rapidly, and the process section is stopped rapidly according to the slope speed for protection.
Specifically, the EMG radar deviation rectifying equipment consists of a digital electric controller, an electric execution cylinder with a steel radar position detection sensor and a position sensor.
Specifically, the primary control system in the step 6) is composed of ramp speed logic limitation of the process section main line process PLC and the EMG radar deviation correction device, and realizes data receiving and sending of the process section main line process PLC collected EMG radar deviation correction device.
The invention has the following beneficial effects: the invention adds a backup protection function on the original deviation correcting system, the primary control system acquires the data of the deviation correcting equipment through a communication protocol, and the ramp speed limit of the primary control system, the early warning prompt system and the tension compensation system are controlled, so that the ramp speed limit is 60m/min when the strip steel deviates 50mm from the production center line, even if the incoming material plate type is poor, the deviation degree of the strip steel can be obviously reduced, the serious deviation of the strip steel in the furnace is effectively avoided, the strip breakage accident in the annealing furnace is greatly reduced, and the continuous and reliable operation of the cold rolling processing line is ensured.
Drawings
FIG. 1 is a schematic diagram of the structural composition of the EMG radar correction device of the present invention.
Fig. 2 is a schematic diagram of the operation process of the EMG radar deviation rectifying device of the present invention.
FIG. 3 is a schematic diagram of the ramp speed logic limit control of the present invention.
Detailed Description
The following are specific examples of the present invention and further describe the technical solutions of the present invention, but the scope of the present invention is not limited to these examples. All changes, modifications and equivalents that do not depart from the spirit of the invention are intended to be included within the scope thereof.
The control method for preventing the strip breakage in the annealing furnace of the cold rolling treatment line comprises the following steps:
1) the strip steel radar position detection sensor of the EMG radar deviation rectifying equipment transmits data to the data processing module through the optical fiber, the data processing module transmits the data to the radar data processing server, and then the radar data processing server transmits the data to the digital electric control controller of the EMG radar deviation rectifying equipment through profibus DP communication;
2) the digital electric controller transmits the data of the strip steel radar position detection sensor to a main line process PLC through profibus DP communication;
3) the position of an electric execution cylinder of the EMG radar deviation rectifying equipment is detected by a high-precision position sensor, the data of the position sensor is connected with an EMG special communication module of the EMG radar deviation rectifying equipment through a CAN OPEN communication line, the EMG special communication module is in communication connection with a digital electric control controller through a profibus DP, and the position data of the electric execution cylinder is transmitted to a main line process PLC;
4) when the stroke of the EMG electric actuating cylinder exceeds 80%, the process operating room gives out sound and light prompts to prompt operators to adjust the tension of the strip steel deviation area and increase the set value of the tension of the annealing furnace deviation area by 30-45%;
5) collecting data of EMG radar deviation rectifying equipment by a main line process PLC (programmable logic controller), specifically data of strip steel deviating from the central position of a production line in a furnace, judging by the main line process PLC according to the data of the strip steel deviating from the central position of the production line, and automatically starting ramp to limit the speed to be less than or equal to 60 m/min;
6) when the strip steel deviates 100mm from the production center line, the process section of the primary control system is started and triggered to stop rapidly, and the process section is stopped rapidly according to the slope speed for protection.
The primary control system is composed of ramp speed logic limitation of the process section main line process PLC and EMG radar deviation rectifying equipment, and data of the EMG radar deviation rectifying equipment collected by the process section main line process PLC is received and sent.
With reference to the attached drawing 1, the EMG radar deviation correcting device consists of a digital electric controller, an electric actuating cylinder with a steel radar position detection sensor and a position sensor.
The strip steel radar position detection sensor shown in the attached figure 2 is combined to transmit data to a radar data processing interface board (RPU) through an optical fiber, the data are transmitted to a radar data server (DPU) after being processed by the RPU, and the radar data server (DPU) is transmitted to an EMG digital electronic control unit (icon) through can open communication.
The EMG radar deviation correcting device electrically executes cylinder position, is detected through high accuracy position sensor 1#2#, and position sensor data passes through special data processing board, and special data processing board passes through can open communication transmission to EMG digital electric control controller (icon).
Further described with reference to fig. 3, the digital electronic controller (icon) and the main line process PLC perform data transmission through profibus DP communication, acquire position data of the strip steel deviated from the center line of the production line measured by the strip steel radar position detection sensor, and simultaneously acquire stroke position data of the electric actuating cylinder. And the main line process PLC performs logic judgment according to the collected EMG radar deviation rectifying equipment data. When the stroke of the EMG electric actuating cylinder exceeds 80%, a warning window pops up on a human-computer interface, and meanwhile, a process operation chamber sends out an audible and visual alarm prompt to prompt an operator to adjust the tension of a strip steel deviation area and increase the tension set value (30-45%) of the annealing furnace deviation area. And the main line process PLC judges according to the data of the strip steel deviating from the center position of the production line, and when the strip steel deviates from the center line > to 50mm, the speed of the automatic starting ramp is limited to be less than 60 m/min. When the deviation of the strip steel from the production center line exceeds 100mm, the process section of the primary control system is triggered to stop rapidly, and the process section is stopped rapidly according to the slope speed for protection.
The present invention is not limited to the above embodiments, and any structural changes made under the teaching of the present invention shall fall within the scope of the present invention, which is similar or similar to the technical solutions of the present invention.
The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.
Claims (2)
1. A control method for preventing strip breakage in a cold rolling processing line annealing furnace is characterized by comprising the following steps:
1) the strip steel radar position detection sensor of the EMG radar deviation rectifying equipment transmits data to the data processing module through the optical fiber, the data processing module transmits the data to the radar data processing server, and then the radar data processing server transmits the data to the digital electric control controller of the EMG radar deviation rectifying equipment through profibus DP communication;
2) the digital electric controller transmits the data of the strip steel radar position detection sensor to a main line process PLC through profibus DP communication;
3) the position of an electric execution cylinder of the EMG radar deviation rectifying equipment is detected by a high-precision position sensor, the data of the position sensor is connected with an EMG special communication module of the EMG radar deviation rectifying equipment through a CAN OPEN communication line, the EMG special communication module is in communication connection with a digital electric control controller through a profibus DP, and the position data of the electric execution cylinder is transmitted to a main line process PLC;
4) when the stroke of the EMG electric actuating cylinder exceeds 80%, the process operating room gives out sound and light prompts to prompt operators to adjust the tension of the strip steel deviation area and increase the set value of the tension of the annealing furnace deviation area by 30-45%;
5) collecting data of EMG radar deviation rectifying equipment by a main line process PLC (programmable logic controller), specifically data of strip steel deviating from the central position of a production line in a furnace, judging by the main line process PLC according to the data of the strip steel deviating from the central position of the production line, and automatically starting ramp to limit the speed to be less than or equal to 60 m/min;
6) starting and triggering a process section of a primary control system to stop quickly when the strip steel deviates 100mm from the production center line, and stopping the process section quickly according to the slope speed for protection;
and the primary control system in the step 6) is composed of ramp speed logic limitation of the process section main line process PLC and EMG radar deviation rectifying equipment, and data of the EMG radar deviation rectifying equipment collected by the process section main line process PLC is received and sent.
2. The control method for preventing the strip breakage in the cold rolling processing line annealing furnace according to claim 1, wherein the EMG radar deviation rectifying device is composed of a digital electric controller, an electric actuating cylinder of a strip steel radar position detection sensor and a position sensor.
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| CN202010300894.1A CN111440942B (en) | 2020-04-16 | 2020-04-16 | Control method for preventing strip breakage in annealing furnace of cold rolling treatment line |
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| CN202010300894.1A CN111440942B (en) | 2020-04-16 | 2020-04-16 | Control method for preventing strip breakage in annealing furnace of cold rolling treatment line |
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| CN111440942B true CN111440942B (en) | 2022-02-11 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101013023A (en) * | 2007-02-12 | 2007-08-08 | 西安理工大学 | CCD based strip automatic centering CPC detecting system and detecting method |
| CN103866219A (en) * | 2012-12-14 | 2014-06-18 | 攀钢集团攀枝花钢钒有限公司 | Hot-dip aluminum and zinc strip steel production method and hot-dip aluminum and zinc strip steel production line |
| CN205204390U (en) * | 2015-10-28 | 2016-05-04 | 重庆广际实业有限公司 | A rectify, speed governing, roller distance governing system for panel production |
| CN205802574U (en) * | 2016-06-27 | 2016-12-14 | 攀钢集团攀枝花钢钒有限公司 | Prevent galvanizing unit strip steel from running the automatic reduction of speed control system of sideslip broken belt |
-
2020
- 2020-04-16 CN CN202010300894.1A patent/CN111440942B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101013023A (en) * | 2007-02-12 | 2007-08-08 | 西安理工大学 | CCD based strip automatic centering CPC detecting system and detecting method |
| CN103866219A (en) * | 2012-12-14 | 2014-06-18 | 攀钢集团攀枝花钢钒有限公司 | Hot-dip aluminum and zinc strip steel production method and hot-dip aluminum and zinc strip steel production line |
| CN205204390U (en) * | 2015-10-28 | 2016-05-04 | 重庆广际实业有限公司 | A rectify, speed governing, roller distance governing system for panel production |
| CN205802574U (en) * | 2016-06-27 | 2016-12-14 | 攀钢集团攀枝花钢钒有限公司 | Prevent galvanizing unit strip steel from running the automatic reduction of speed control system of sideslip broken belt |
Non-Patent Citations (1)
| Title |
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| 带钢纠偏系统（CPC）分析及其应用;刘宁;《中国仪器仪表》;20090825;89-92 * |
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