CN113118210A - Rolling breakage preventing system for continuous rolling of high-carbon steel and control method thereof - Google Patents
Rolling breakage preventing system for continuous rolling of high-carbon steel and control method thereof Download PDFInfo
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- CN113118210A CN113118210A CN202110431695.9A CN202110431695A CN113118210A CN 113118210 A CN113118210 A CN 113118210A CN 202110431695 A CN202110431695 A CN 202110431695A CN 113118210 A CN113118210 A CN 113118210A
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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
- B21B1/22—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 plates, strips, bands or sheets of indefinite length
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- 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
- B21B38/06—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring tension or compression
Abstract
The invention discloses a rolling strip breakage preventing system for continuous rolling of high-carbon steel. The invention relates to a system and a method for preventing rolling strip breakage in high-carbon steel continuous rolling, which can reduce the strip breakage during the high-carbon steel continuous rolling, improve the efficiency and the cost of the high-carbon steel continuous rolling, realize the batch production of the high-carbon steel on a continuous rolling mill, and reduce the strip breakage rate to be within 3 percent.
Description
Technical Field
The invention relates to the technical field of steel rolling.
Background
The acid rolling unit is a full-continuous high-speed production unit, and the range of rolled steel grades is as follows: hot rolling low carbon steel, ultra-low carbon steel, low alloy high strength steel, medium and low grade non-oriented electrical steel, etc. The high-carbon steel is high in carbon content, high in manganese content and other alloy elements, the welding and rolling difficulty is high, the high-carbon steel exceeds the design outline of a continuous pickling and rolling unit product, and the main alloy elements of part of high-carbon steel types are as follows:
when high-carbon steel such as 50-2, 65Mn-1, 65Mn-2, 65Mn-3 and the like is produced, the phenomena of large rolling force, rolling running and the like occur in the rolling process of a rolling mill due to poor shape and high strength of a raw material plate, and the phenomena of frequent rolling breakage and strip breakage are caused without effective means for control.
Disclosure of Invention
The invention aims to solve the technical problem of realizing a system for preventing rolling strip breakage in the continuous rolling of high-carbon steel.
In order to achieve the purpose, the invention adopts the technical scheme that: a rolling strip breakage preventing system for high-carbon steel continuous rolling is characterized in that at least two rolling mills are arranged on a rolling mill section of an acid rolling mill set, a tensiometer roller which is contacted with a product is installed at an outlet of each rolling mill, a tension sensor is installed below a bearing seat on the operating side and the transmission side of each tensiometer roller, and the tension sensors output sensing signals to a control device.
The tensiometer roller is supported on the lower surface of the product and is in contact with the product.
The acid rolling unit is provided with five frame continuous rolling mills, and the tensiometer roller is provided with five rollers.
The control device outputs control signals to the rolling mill, the tension roller and the coiling machine.
Based on the control method of the rolling strip breakage prevention system for the continuous rolling of the high-carbon steel, when a rolling mill of the acid rolling mill set works, the control equipment acquires tension parameter signals of the tension sensors on two sides of each tensiometer roller in real time, and when the tension parameter difference value of two sides of the same tensiometer roller exceeds a safety threshold value, the strip breakage risk is judged to exist.
When the difference value of the tension parameters of the two sides of each tension meter roller is within 0-30KN, judging that continuous rolling has no strip breakage risk, and continuing rolling;
and when the tension parameter difference value of two sides of a certain tension meter roller is larger than or equal to 30KN and the duration time exceeds the set time, controlling the rolling mill section of the acid rolling mill group to execute an automatic quick stop program.
The deviation of the measured tension of the outlet operation side and the transmission side of the 1# and 2# rolling mills is more than 30KN, and the rolling mill section automatically stops quickly after lasting for 1.5 seconds;
the deviation of the measured tension of the outlet operation side and the transmission side of the 3#, 4#, and 5# rolling mills is more than 30KN, and the rolling mill section automatically stops quickly after the continuous 0.5 second.
And after the automatic quick stop is executed, opening the roll gap pressed down by the rack of the acid rolling mill set, then driving the tension roll, the rolling mill and the coiler motor to jointly rotate at the same speed, pressing down the roll gap again until the tension parameter difference values of the two sides of all the tension meter rolls are lower than the safety threshold value, and continuing rolling after all the rolling mills resume working.
When the tension parameter difference value of two sides of a certain tension meter roller is 5-30KN, the rolling mill executes a tension deviation automatic control method;
the tension deviation automatic control method comprises the following steps: and if the tension of the operation side is greater than that of the transmission side, pressing the roll gap of the operation side, and if the tension of the operation side is less than that of the transmission side, pressing the roll gap of the transmission side.
When the tension deviation automatic control method is executed, the roll gap pressing speed is once in 20 milliseconds, the roll gap pressing amount per time is increased along with the increase of the product width, and when the tension deviation automatic control method is started by the rolling mill and continuously exceeds the set time, the tension deviation automatic control is stopped.
The invention relates to a system and a method for preventing rolling strip breakage in high-carbon steel continuous rolling, which can reduce the strip breakage during the high-carbon steel continuous rolling, improve the efficiency and the cost of the high-carbon steel continuous rolling, realize the batch production of the high-carbon steel on a continuous rolling mill, and reduce the strip breakage rate to be within 3 percent.
Drawings
The following is a brief description of the contents of each figure and the symbols in the figures in the description of the invention:
FIG. 1 is a schematic diagram of a rolling strip breakage prevention system;
FIG. 2 is a schematic view showing adjustment of the roll gap pressing amount;
the labels in the above figures are: 1. a thickness gauge; 2. a coiler; 3. a rolling mill; 4. a light and distance measuring instrument; 5. a tensiometer roller; 6. and a tension roller.
Detailed Description
The following description of the embodiments with reference to the drawings is provided to describe the embodiments of the present invention, and the embodiments of the present invention, such as the shapes and configurations of the components, the mutual positions and connection relationships of the components, the functions and working principles of the components, the manufacturing processes and the operation and use methods, etc., will be further described in detail to help those skilled in the art to more completely, accurately and deeply understand the inventive concept and technical solutions of the present invention.
The acid rolling unit is a full-continuous high-speed production unit, and the range of rolled steel grades is as follows: hot rolling low carbon steel, ultra-low carbon steel, low alloy high strength steel, medium and low grade non-oriented electrical steel, etc. The high-carbon steel has high carbon content, high manganese content and other alloy elements, and great welding and rolling difficulty, and exceeds the design outline of continuous pickling and rolling unit products. In order to realize the mass production of high-carbon steel on a continuous rolling mill, the problem of frequent breakage and strip breakage of the high-carbon steel needs to be solved.
The whole acid rolling unit mainly comprises an inlet section, an acid washing section and a rolling mill section, wherein the rolling mill section is shown as figure 1 of the acid rolling unit, a rolling strip breakage preventing system for high-carbon steel continuous rolling is improved aiming at the rolling mill section of the existing acid rolling unit, the rolling mill section is generally provided with five rolling mills 3, a feed inlet of the rolling mill section is provided with a tension roller 6, an output port is connected with a coiling machine 2, as shown in figure 1, the outlets of the five continuous rolling mills 3 of the acid rolling unit are respectively provided with a tensiometer roller 5, the tensiometer rollers 5 are supported on the lower surface of a product (steel strip) and are contacted with the product, and 1 piezomagnetic tension sensor is respectively arranged below an operation side of each tensiometer roller 5 and a transmission side bearing seat and used for measuring the outlet tension of each rack and the tension deviation between the operation side and the.
Each tension sensor transmits the acquired signal to the control equipment of the acid rolling unit, the control equipment can control the working parameters of the whole acid rolling unit according to the acquired signal, and in the system, the control equipment outputs a control signal to the frame of the acid rolling unit to control the roll gap, the tension roll 6 and the coiler 2 according to the acquired signal.
The control method of the rolling strip breakage preventing system for the continuous rolling of the high-carbon steel is as follows:
when the acid rolling unit works, the control equipment acquires tension parameter signals of tension sensors on two sides of each tension meter roller 5 in real time;
when the measured tension deviation between the operation side and the transmission side of the same tensiometer roller 5 is more than 5KN, the rolling mill 3 starts the tension deviation automatic control method;
the tension deviation automatic control method comprises the steps that when a tension deviation value is larger than 5KN, a rolling mill with the tension deviation larger than 5KN is automatically controlled to start, the operation side tension greatly presses an operation side roll gap, the transmission side tension greatly presses a transmission side roll gap, the roll gap speed is once at 20 milliseconds, the rolling reduction is executed according to the width of strip steel according to a certain slope at each time, as shown in figure 2, and if the tension deviation at the outlet of the rolling mill 3 is still not controlled to return to 5KN within 1000 milliseconds, a rolling mill tension deviation control system is stopped.
And when the deviation of the measured tension of the operation side and the transmission side is controlled within 5-30KN, judging that the continuous rolling has no strip breakage risk, and continuing the rolling.
When the deviation of the measured tension of the operation side and the transmission side of one tensiometer roller 5 is more than 30KN, judging that the strip breakage risk exists in continuous rolling;
the belt breakage risk judgment method comprises the following steps:
according to the running direction of the steel strip, a first rolling mill of an acid rolling unit is a # 1 rolling mill, a second rolling mill of the acid rolling unit is a # 2 rolling mill, and the like;
the deviation of the measured tension of the outlet operation side and the transmission side of the 1# and 2# rolling mills is more than 30KN, the rolling mills automatically and quickly stop after lasting for 1.5 seconds, and the deviation of the measured tension of the outlet operation side and the transmission side of the 3# and 4# and 5# rolling mills is more than 30KN and automatically and quickly stop after lasting for 0.5 seconds.
And when the strip breakage risk occurs, the rolling mill automatically stops at a high speed.
After the automatic quick-stop program of the rolling mill is executed due to tension deviation in the rolling process, the press-down roll gaps of all the stands are opened, the tension roll 6, the rolling mill and the coiler 2 are selected to jointly rotate at the speed of 30m/min, and after the strip steel with the empty tension deviation of more than or equal to 30KN reaches the rolling outlet, the roll gaps are pressed down again to continue rolling.
According to the control system and the control method, the strip breakage during the continuous rolling of the high-carbon steel can be reduced, the efficiency and the cost of the continuous rolling of the high-carbon steel are improved, the batch production of the high-carbon steel on a continuous rolling mill is realized, and the strip breakage rate is reduced to be within 3 percent.
The invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to apply the inventive concept and solution to other applications without substantial modification.
Claims (10)
1. The utility model provides a rolling strip breakage system that prevents for high carbon steel continuous rolling, the rolling mill section of sour rolling mill group is equipped with two at least rolling mills which characterized in that: the outlet of each rolling mill is provided with a tension meter roller which is contacted with a product, a tension sensor is respectively arranged below the bearing seat on the operation side and the transmission side of each tension meter roller, and the tension sensors output induction signals to the control equipment.
2. The rolling breakage prevention system for high carbon steel continuous rolling according to claim 1, characterized in that: the tensiometer roller is supported on the lower surface of the product and is in contact with the product.
3. The rolling strip breakage prevention system for high carbon steel continuous rolling according to claim 1 or 2, characterized in that: the acid rolling unit rolling section is provided with five frame continuous rolling mills, and the tensiometer roller is provided with five rollers.
4. The rolling breakage prevention system for high carbon steel continuous rolling according to claim 3, characterized in that: the control device outputs control signals to the rolling mill, the tension roller and the coiling machine.
5. The control method of the rolling strip breakage preventing system for the continuous rolling of the high carbon steel according to any one of claims 1 to 4 is characterized in that: when the acid rolling mill group rolling mill works, the control equipment acquires tension parameter signals of the tension sensors on two sides of each tensiometer roller in real time, and when the tension parameter difference value of two sides of the same tensiometer roller exceeds a safety threshold value, the strip breakage risk is judged to exist.
6. The control method according to claim 5, characterized in that: when the difference value of the tension parameters of the two sides of each tension meter roller is within 0-30KN, judging that continuous rolling has no strip breakage risk, and continuing rolling;
and when the tension parameter difference value of two sides of a certain tension meter roller is larger than or equal to 30KN and the duration time exceeds the set time, controlling the rolling mill section of the acid rolling mill group to execute an automatic quick stop program.
7. The control method according to claim 6, characterized in that: the deviation of the measured tension of the outlet operation side and the transmission side of the 1# and 2# rolling mills is more than 30KN, and the rolling mill section automatically stops quickly after lasting for 1.5 seconds;
the deviation of the measured tension of the outlet operation side and the transmission side of the 3#, 4#, and 5# rolling mills is more than 30KN, and the rolling mill section automatically stops quickly after the continuous 0.5 second.
8. The control method according to claim 7, characterized in that: and after the automatic quick stop is executed, opening the roll gap pressed down by the rack of the acid rolling mill set, then driving the tension roll, the rolling mill and the coiler motor to jointly rotate at the same speed, pressing down the roll gap again until the tension parameter difference values of the two sides of all the tension meter rolls are lower than the safety threshold value, and continuing rolling after all the rolling mills resume working.
9. The control method according to claim 5, 6, 7, or 8, characterized in that: when the tension parameter difference value of two sides of a certain tension meter roller is 5-30KN, the rolling mill executes a tension deviation automatic control method;
the tension deviation automatic control method comprises the following steps: and if the tension of the operation side is greater than that of the transmission side, pressing the roll gap of the operation side, and if the tension of the operation side is less than that of the transmission side, pressing the roll gap of the transmission side.
10. The control method according to claim 8, characterized in that: when the tension deviation automatic control method is executed, the roll gap pressing speed is once in 20 milliseconds, the roll gap pressing amount per time is increased along with the increase of the product width, and when the tension deviation automatic control method is started by the rolling mill and continuously exceeds the set time, the tension deviation automatic control is stopped.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110431695.9A CN113118210A (en) | 2021-04-21 | 2021-04-21 | Rolling breakage preventing system for continuous rolling of high-carbon steel and control method thereof |
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| CN202110431695.9A CN113118210A (en) | 2021-04-21 | 2021-04-21 | Rolling breakage preventing system for continuous rolling of high-carbon steel and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114570770A (en) * | 2022-01-13 | 2022-06-03 | 贵州中铝铝业有限公司 | Equipment for preventing fire of broken strip of cold rolling mill |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1117099A1 (en) * | 1983-07-13 | 1984-10-07 | Карагандинский металлургический комбинат | Arrangement for regulating tension of strip between stands of continuous rolling mill |
| JP2007283320A (en) * | 2006-04-13 | 2007-11-01 | Nippon Steel Corp | Cold tandem rolling mill |
| CN103785694A (en) * | 2013-11-22 | 2014-05-14 | 首钢总公司 | Method for preventing strip breakage on startup |
| CN203917404U (en) * | 2014-05-28 | 2014-11-05 | 杭州电子科技大学 | Strip tension control device between a kind of frame of cold continuous rolling mill |
| CN106077105A (en) * | 2016-06-21 | 2016-11-09 | 首钢京唐钢铁联合有限责任公司 | Sour rolling mill broken belt control system and control method |
| CN206936021U (en) * | 2017-06-07 | 2018-01-30 | 西安艾蒙希科技有限公司 | A kind of sheet metal strip tension detecting apparatus |
| CN207823576U (en) * | 2017-09-15 | 2018-09-07 | 首钢京唐钢铁联合有限责任公司 | A kind of rolling system |
| CN108838215A (en) * | 2018-06-29 | 2018-11-20 | 首钢京唐钢铁联合有限责任公司 | A kind of oblique regulating method and device of milling train |
| CN110576051A (en) * | 2019-09-04 | 2019-12-17 | 首钢京唐钢铁联合有限责任公司 | Roller compensation adjusting method for tensiometer |
| CN111346929A (en) * | 2020-03-04 | 2020-06-30 | 首钢京唐钢铁联合有限责任公司 | Method and device for preventing strip steel from being broken and piled, cold rolling unit and storage medium |
| CN112077154A (en) * | 2020-07-20 | 2020-12-15 | 山西太钢不锈钢股份有限公司 | Method for improving tension control precision of loop of acid continuous rolling on-line |
| CN112676355A (en) * | 2020-12-28 | 2021-04-20 | 包头钢铁（集团）有限责任公司 | Method for detecting deviation of steel strip between cold continuous rolling mill frames |
-
2021
- 2021-04-21 CN CN202110431695.9A patent/CN113118210A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1117099A1 (en) * | 1983-07-13 | 1984-10-07 | Карагандинский металлургический комбинат | Arrangement for regulating tension of strip between stands of continuous rolling mill |
| JP2007283320A (en) * | 2006-04-13 | 2007-11-01 | Nippon Steel Corp | Cold tandem rolling mill |
| CN103785694A (en) * | 2013-11-22 | 2014-05-14 | 首钢总公司 | Method for preventing strip breakage on startup |
| CN203917404U (en) * | 2014-05-28 | 2014-11-05 | 杭州电子科技大学 | Strip tension control device between a kind of frame of cold continuous rolling mill |
| CN106077105A (en) * | 2016-06-21 | 2016-11-09 | 首钢京唐钢铁联合有限责任公司 | Sour rolling mill broken belt control system and control method |
| CN206936021U (en) * | 2017-06-07 | 2018-01-30 | 西安艾蒙希科技有限公司 | A kind of sheet metal strip tension detecting apparatus |
| CN207823576U (en) * | 2017-09-15 | 2018-09-07 | 首钢京唐钢铁联合有限责任公司 | A kind of rolling system |
| CN108838215A (en) * | 2018-06-29 | 2018-11-20 | 首钢京唐钢铁联合有限责任公司 | A kind of oblique regulating method and device of milling train |
| CN110576051A (en) * | 2019-09-04 | 2019-12-17 | 首钢京唐钢铁联合有限责任公司 | Roller compensation adjusting method for tensiometer |
| CN111346929A (en) * | 2020-03-04 | 2020-06-30 | 首钢京唐钢铁联合有限责任公司 | Method and device for preventing strip steel from being broken and piled, cold rolling unit and storage medium |
| CN112077154A (en) * | 2020-07-20 | 2020-12-15 | 山西太钢不锈钢股份有限公司 | Method for improving tension control precision of loop of acid continuous rolling on-line |
| CN112676355A (en) * | 2020-12-28 | 2021-04-20 | 包头钢铁（集团）有限责任公司 | Method for detecting deviation of steel strip between cold continuous rolling mill frames |
Non-Patent Citations (2)
| Title |
|---|
| 沈加强: "酸轧联合机组Carrousel卷取机张力控制技术", 《钢铁技术》 * |
| 潘炼等, 华中科技大学出版社，第1版 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114570770A (en) * | 2022-01-13 | 2022-06-03 | 贵州中铝铝业有限公司 | Equipment for preventing fire of broken strip of cold rolling mill |
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