CN110576051A - Roller compensation adjusting method for tensiometer - Google Patents
Roller compensation adjusting method for tensiometer Download PDFInfo
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- CN110576051A CN110576051A CN201910830414.XA CN201910830414A CN110576051A CN 110576051 A CN110576051 A CN 110576051A CN 201910830414 A CN201910830414 A CN 201910830414A CN 110576051 A CN110576051 A CN 110576051A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 31
- 238000005096 rolling process Methods 0.000 claims abstract description 29
- 238000005259 measurement Methods 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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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
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- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
The invention discloses a roller compensation adjustment method for a tensiometer, which comprises the following steps: acquiring a designed vertical distance value h between a roller top line and a rolling line of a tension meter roller; obtaining a tension detection value F at the driving side of the tension meter roller when the rolling mill is stably produced1And the working side tension detection value F2(ii) a According to the designed vertical distance value h and the driving side tension detection value F1And the working side tension detection value F2Determining a compensation value delta h, and solving the equation as follows: Δ h ═ F1‑F2)·h/F1(ii) a And adjusting the vertical position of the working side of the tension meter roller according to the compensation value delta h. The method for compensating and adjusting the tension meter roller can quantitatively adjust the position of the tension meter roller, eliminate or reduce detection deviation, ensure accurate measurement of tension deviation, and has the advantages of simple steps and high accuracy and reliability.
Description
Technical Field
the invention relates to the technical field of cold continuous rolling, in particular to a tension meter roller compensation adjusting method.
Background
The continuous rolling mill is key equipment for producing high-precision cold and hard coils, and is used for rolling strip steel at a high speed, and the highest speed of the strip steel can reach 1400 m/min. The tension deviation of the strip on the two sides of the roller must be controlled within an allowable range, which is a precondition for high-speed rolling.
The above-mentioned tension deviation is generally measured by a tensiometer roll on the rolling mill. However, with the continuous operation of the production line, the spatial position of the tension meter roller can be shifted, so that the detection value is deviated, and further the detection of the tension deviation is distorted or even reversed. When the strip steel deviates, if an operator adjusts the rolling mill according to the deviation, the rolling mill is easy to break at a high speed, stop for a long time, damage peripheral equipment and other serious consequences are easily caused.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a tension meter roller compensation adjusting method which can quantitatively adjust the position of a tension meter roller, eliminate or reduce detection deviation, ensure accurate measurement of tension deviation, and has the advantages of simple steps and high accuracy and reliability.
The invention provides a roller compensation adjustment method for a tension meter, which comprises the following steps:
Acquiring a designed vertical distance value h between a roller top line and a rolling line of a tension meter roller;
Obtaining a tension detection value F at the driving side of the tension meter roller when the rolling mill is stably produced1And the working side tension detection value F2；
According to the designed vertical distance value h and the driving side tension detection value F1And the working side tension detection value F2Determining a compensation value delta h, and solving an equation to obtain delta h as (F)1-F2)·h/F1；
And adjusting the vertical position of the working side of the tension meter roller according to the compensation value delta h.
Further, when the vertical position of the working side of the tensiometer roller is adjusted according to the compensation value delta h, the vertical position of the driving side of the tensiometer roller is kept unchanged.
Further, when delta h is larger than 0, the working side of the tension meter roller moves downwards along the vertical direction by | delta h |; when delta h is less than 0, the working side of the tension meter roller moves up by | delta h | along the vertical direction.
One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:
Directly utilizing the designed vertical distance value h between the roll top line and the rolling line of the tension meter roll and the tension detection value F at the driving side1And the working side tension detection value F2The method comprises the steps of obtaining and determining a compensation value delta h, automatically adjusting the vertical position of the working side of the tension meter roller according to the compensation value delta h, enabling the working side of the tension meter roller to move by the distance delta h along the vertical direction, eliminating or reducing detection deviation, ensuring the detection precision of the tension meter roller and further ensuring the measurement precision of tension deviation, and the whole process is simple in steps, definite in direction, quantitative in adjustment and high in precision and reliability.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of a partial structure of a rolling mill to which a tension meter roller compensation adjustment method according to an embodiment of the present invention is applied.
Description of the main element symbols:
D-roll, E-dam roll and F-tension meter roll.
Detailed Description
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
the inventor researches and discovers that the dead weight of a rolling mill housing of a continuous rolling mill is too large (up to 200 tons), so that the foundation is unevenly settled, the spatial position of a tensiometer roller F connected with the foundation is changed, and the wrap angle is changed and the detection deviation is caused. Tensiometer roller F and dam roller E install on the structure base of rolling mill memorial archway, can adjust the levelness and hang down straightness through the gasket, provide preliminary mode for the compensation adjustment.
The inventors found that, when a production test was carried out on a thin gauge strip steel having a rolled thickness of 1.5mm or less after the tension meter roll F and the dam roll E were adjusted to be absolutely horizontal and absolutely vertical, the detection deviation, distortion, and inversion of the tension meter roll F could not be eliminated. The inventor analyzes and finds that the space position of the roller D changes along with the influence of the foundation settlement, and the roll gap position of the roller D is difficult to control, cannot be accurately detected and changes in real time, so that the method is the main reason that the adjustment modes of absolute horizontal and absolute vertical cannot work. Meanwhile, the adjustment modes of absolute horizontal and absolute vertical cannot be operated quantitatively, an operator is required to observe operation according to experience, the operation process is complicated and depends heavily on the operation level of the operator, and ideal balance among efficiency, precision and reliability is difficult to obtain.
The inventor analyzes and finds that the tension difference between the driving side tension and the working side tension of the tension meter roller F directly reflects the influence of the foundation settlement on the space position of the tension meter roller F during stable production, and the tension difference is matched with the position of the roller D after the foundation settlement so as to play a better compensation role. The detected deviation can be controlled within the tolerance range by eliminating the influence of the tension difference or reducing the influence to the tolerance range. Further studies have found that the tension difference depends mainly on the variation of the vertical position of the tensiometer roller F, while the horizontal position variation causes negligible effects. The influence of the tension difference can be eliminated and controlled by directly adjusting the spatial position of the working side in the vertical direction by using the driving side of the tension meter roller F as an adjustment reference.
this control mode has realized quantitative regulation, and only need adjust the vertical position of work side, need not a plurality of position quantities of synchronous adjustment and reduce the control operation degree of difficulty by a wide margin, reduce cross error influence, reduces the dependence to operating personnel's operation experience, and the operation is simple and easy, accuracy and reliability are all high.
Referring to fig. 1, the present embodiment discloses a specific structure of a compensation adjustment method for a tension meter roller F, which is used for eliminating or reducing the detection deviation of the tension meter roller F, and includes the following steps:
Step A: and acquiring a designed vertical distance value h between the roll top line and the rolling line of the tension meter roll F. The roller top line of the tensiometer roller F is positioned on top of the tensiometer roller F and is in tension contact with the strip steel, generally a horizontal line. The pass line is a reference line for the pass arrangement and is generally a horizontal line. The designed vertical distance value between the roller top line and the rolling line is the vertical distance value given during design and is a design standard value.
And B: obtaining a drive-side tension detection value F of a tensiometer roller F1And the working side tension detection value F2. The driving side, namely the transmission side, of the tension meter roller F is the side of the tension meter roller F close to the transmission device; the working side of the tension gauge roller F, i.e., the operating side, is the side of the tension gauge roller F close to the operation table. When the rolling mill is stably produced, the tension detection value F at the driving side can be obtained by directly reading the measurement indication values at the two sides of the roller F of the tension meter1And work withSide tension detection value F2. In an actual detection process, a rolled finished product is thin strip steel with the thickness not more than 1.5mm when the rolling mill is stably produced. Exemplarily, the rolling mill is a five-tandem-rolling sour rolling mill.
and C: according to the designed vertical distance value h and the driving side tension detection value F1And the working side tension detection value F2Determining a compensation value delta h, and solving the equation as follows: Δ h ═ F1-F2)·h/F1. The linear relation is obtained by the inventor through theoretical analysis, and the validity of the linear relation is confirmed through practical verification. Theoretical analysis found that the amount reflecting the horizontal position variation, including the horizontal distance between the axes of the tensiometer roller F and the dam roller E, and the horizontal distance between the axes of the tensiometer roller F and the nip roller D, had a negligible effect on the tension difference across the tensiometer roller F.
For example, the set value L of the horizontal distance between the axes of the tensiometer roller F and the dam roller E1Set value L of horizontal distance between tensiometer roller F and roller D of 400mm23650mm, the designed vertical distance value h between the top line of the roller of the tension meter roller F and the rolling line is 30mm, and the radius of the tension meter roller F is 120 mm. When the working side of the tensiometer roller F is vertically offset by 0.46mm upwards or downwards, (F)1-F2)/F1The numerical values of (A) are all 1.63%; when the working side of the tensiometer roller F is horizontally shifted 0.46mm to the left or right, (F)1-F2)/F1The value of (A) was 0.11%. Compared to the two phases, 0.11% compared to 1.63% is negligible. Incidentally, in this example, the front wrap angle of the tension meter roller F is 4.39 °, and the rear wrap angle is 0.47 °.
step D: the vertical position of the working side of the tensiometer roller F is adjusted according to the compensation value Δ h. Through the position adjustment, the tension difference between the driving side and the working side of the tension meter roller F is controlled within the tolerance range, so that the tension deviation detection is not distorted or reversed.
Exemplarily, the vertical position of the driving side of the tensiometer roller F remains unchanged when the vertical position of the working side of the tensiometer roller F is adjusted according to the compensation value Δ h. That is, the spatial position of the work side in the vertical direction is directly adjusted with the drive side of the tension meter roller F as an adjustment reference.
It is understood that Δ h is a magnitude having a direction indicating the adjustment direction of the vertical position of the working side of the tensiometer roll F. Exemplarily, when Δ h > 0, the working side of the tensiometer roller F is moved downward by | Δ h |, in the vertical direction; when Δ h is less than 0, the working side of the tensiometer roller F is moved up in the vertical direction by | Δ h |.
As an actual application example, the set tension of the rolling mill is 30 tons, and the set horizontal distance L between the tensiometer roll F and the axis of the dam roll E is set1Set value L of horizontal distance between tensiometer roller F and roller D of 400mm23650mm, the designed vertical distance value h between the top line of the roller of the tension meter roller F and the rolling line is 30mm, and the radius of the tension meter roller F is 120 mm. In the case of stable production, F130.2 ton, F229.8 tons, Δ h is 0.39mm according to the above equation. Because delta h is larger than 0, the working side of the tension meter roller F is adjusted downwards by 0.39mm along the vertical direction, and then compensation adjustment can be realized. After the tension meter roller F compensation adjustment method is put into production, high-speed belt breakage accidents caused by improper adjustment due to tension deviation do not occur in the rolling process, and the practical effect is good.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (3)
1. A roller compensation adjustment method for a tension meter is characterized by comprising the following steps:
Acquiring a designed vertical distance value h between a roller top line and a rolling line of a tension meter roller;
Obtaining a tension detection value F at the driving side of the tension meter roller when the rolling mill is stably produced1And the working side tension detection value F2；
The driving side according to the designed vertical distance value hTension detection value F1And the working side tension detection value F2Determining a compensation value delta h, and solving an equation to obtain delta h as (F)1-F2)·h/F1；
And adjusting the vertical position of the working side of the tension meter roller according to the compensation value delta h.
2. Tensiometer roller compensation adjustment method according to claim 1, characterised in that the vertical position of the drive side of the tensiometer roller remains unchanged when the vertical position of the working side of the tensiometer roller is adjusted according to the compensation value Δ h.
3. The tensiometer roll compensation adjustment method according to claim 1, characterized in that when Δ h > 0, the working side of the tensiometer roll is moved downwards by | Δ h | in the vertical direction; when delta h is less than 0, the working side of the tension meter roller moves up by | delta h | along the vertical direction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910830414.XA CN110576051B (en) | 2019-09-04 | 2019-09-04 | Roller compensation adjusting method for tensiometer |
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| CN201910830414.XA CN110576051B (en) | 2019-09-04 | 2019-09-04 | Roller compensation adjusting method for tensiometer |
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| CN110576051B CN110576051B (en) | 2020-11-20 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111408626A (en) * | 2020-03-04 | 2020-07-14 | 首钢京唐钢铁联合有限责任公司 | Tension calibration device and tension calibration method of twenty-high rolling mill |
| CN113118210A (en) * | 2021-04-21 | 2021-07-16 | 新余钢铁股份有限公司 | Rolling breakage preventing system for continuous rolling of high-carbon steel and control method thereof |
| CN113290064A (en) * | 2021-05-20 | 2021-08-24 | 马鞍山钢铁股份有限公司 | Method for reducing deviation and belt breakage of cold continuous rolling mill |
| CN114472521A (en) * | 2021-12-24 | 2022-05-13 | 安钢集团冷轧有限责任公司 | Production method of rough surface acid continuous rolling hot-rolled pickled plate |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111408626A (en) * | 2020-03-04 | 2020-07-14 | 首钢京唐钢铁联合有限责任公司 | Tension calibration device and tension calibration method of twenty-high rolling mill |
| CN111408626B (en) * | 2020-03-04 | 2022-04-26 | 首钢京唐钢铁联合有限责任公司 | Tension calibration device and tension calibration method of twenty-high rolling mill |
| CN113118210A (en) * | 2021-04-21 | 2021-07-16 | 新余钢铁股份有限公司 | Rolling breakage preventing system for continuous rolling of high-carbon steel and control method thereof |
| CN113290064A (en) * | 2021-05-20 | 2021-08-24 | 马鞍山钢铁股份有限公司 | Method for reducing deviation and belt breakage of cold continuous rolling mill |
| CN113290064B (en) * | 2021-05-20 | 2023-09-19 | 马鞍山钢铁股份有限公司 | Method for reducing deviation and belt breakage of cold continuous rolling mill |
| CN114472521A (en) * | 2021-12-24 | 2022-05-13 | 安钢集团冷轧有限责任公司 | Production method of rough surface acid continuous rolling hot-rolled pickled plate |
| CN114472521B (en) * | 2021-12-24 | 2024-03-26 | 安钢集团冷轧有限责任公司 | Production method of rough surface acid continuous rolling hot-rolled pickled plate |
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