CN102641895B - Side guide opening quick calibration method for hot-continuous-rolling finishing mill group - Google Patents
Side guide opening quick calibration method for hot-continuous-rolling finishing mill group Download PDFInfo
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- CN102641895B CN102641895B CN 201210113900 CN201210113900A CN102641895B CN 102641895 B CN102641895 B CN 102641895B CN 201210113900 CN201210113900 CN 201210113900 CN 201210113900 A CN201210113900 A CN 201210113900A CN 102641895 B CN102641895 B CN 102641895B
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Abstract
A side guide opening quick calibration method for a hot-continuous-rolling finishing mill group aims to shorten the calibration time and improve the accuracy of side guide calibration; according to the invention, a central positioning point of a machine frame of each finishing mill is firstly determined, a positioning block is welded at the central point of a machine frame beam above the side guide of each finishing mill, and the size of each positioning block is determined according to the size of the machine frame beam of each finishing mill; the central positioning point of the machine frame of each finishing mill is marked in the corresponding positioning block; the side guide opening of each finishing mill is calibrated according to the central positioning point of the machine frame of the finishing mill, marked in the corresponding positioning block, so that the side guide opening value of an automatic control system is the same as an onsite measured value.
Description
Technical field
The present invention relates to a kind of metallurgical thermal technology field hot-rolling finishing mill group side and lead the aperture scaling method.
Background technology
Hot rolling line mm finishing mill unit side is led the aperture demarcation needs manual measurement usually, because mm finishing mill unit does not design the central point sign of each frame, each timing signal all needs the center line of managing to draw steel wire or indicating frame by other modes, and each time of demarcating reaches 2.5 hours; And, in calibration process, being difficult to guarantee the stable of steel wire, measuring error often appears.
Summary of the invention
The present invention seeks to overcome the deficiency of above-mentioned prior art, provide a kind of and can greatly shorten the nominal time, promote the side beacon and fix the hot-rolling finishing mill group side of exactness and lead the aperture quick calibrating method.
The hot-rolling finishing mill group generally comprises seven rolling mills, and from first milling train F1 to the seven rolling mill F7, seven rolling mill frames are arranged in series.The inventive method is:
(1) determine finishing mill frame central anchor point: with theodolite measure respectively before first milling train F1 with last rolling mill F7 after the central point of milling train channel width direction; After first milling train F1 side leading and last rolling mill F7 side are led, set up respectively two for drawing the simple rack of establishing steel wire, weight is fastened at steel wire two makes steel wire stretching, the height of simple rack and position should be adjusted to guarantees that steel wire passes through the roller gap of first milling train to last rolling mill, simultaneously will not first milling train F1 to any object contact in last rolling mill F7 milling train passage; This steel wire is as the center line of mm finishing mill unit milling train passage, and each frame side of mm finishing mill unit is led the mid point of width on this center line.
(2) locating piece of the weldering of the housiung separator central spot above each finish rolling pusher side is led: the locating piece size is determined according to finishing mill housiung separator size:
If housiung separator is round steel or pipe: 2R-d >=e >=R (I)
Or housiung separator is square steel or square tube: H >=e >=H/2 (II)
In formula: R is housiung separator (round steel or pipe) radius, the mm of unit; D is the vertical range of perpendicular anchor point with respect to horizontal edge on locating piece, the mm of unit; E is arc surface height under locating piece, the mm of unit; H is the housiung separator profile height, the mm of unit.
(3) indicate finishing mill frame central anchor point on locating piece: the groove that steel wire correspondence position on the locating piece of each frame is carved to wide 1mm; Plummet is hung on the locating piece at each housiung separator middle part of mm finishing mill unit, makes perpendicular pass through groove, the plummet tip aligns steel wire, and perpendicular corresponding position on locating piece is the some position, side guiding center that steel wire indicates;
(4) according to finishing mill frame central anchor point on locating piece, the finish rolling pusher side being led to aperture implements to demarcate: measure the distance between perpendicular (or plummet tip) and frame both sides flipper guide with ruler, obtain the aperture measurement value that the finishing stand side is led every side; And measured value is inputted respectively to data field in the automatic control system of hot-rolling finishing mill assembly cover, make side in automatic control system lead opening value identical with the field measurement value; Complete the side beacon fixed.
Automatic control system is the supporting control system that the hot continuous rolling unit carries, and the action of each equipment of milling train is controlled, and comprises the control of the mm finishing mill unit side being led to aperture.
The inventive method is applicable to hot continuous rolling wide flat steel finish rolling tandem rolling unit, be positioned at every finishing mill frame side by one-shot measurement and lead top sign central point, can promote the side beacon and fix exactness, greatly shorten the nominal time, each maintenance demarcation side is led the required time of aperture and is saved two hours.
The specific embodiment
When implementing for the first time, need to be operated according to preceding step (1)-(4).While again implementing, each side is led aperture and is demarcated and only need to carry out aforesaid (4) step and can complete later.
Utilization of the present invention is once overhauled and is drawn steel wire down time, measures and install, weld location, marking central point.
Draw steel wire: at F1 side leading, the F7 side is led the rear simple rack of setting up respectively, for setting up steel wire, makes steel wire by F1 to F7 roller gap, weight is fastened at steel wire two makes steel wire stretching, and the height assurance steel wire of simple rack is refused any object contact in F1 to F7 milling train passage.
Measure to install, the welding location: detect and adjust by measuring instrument and make the center line of steel wire in the mm finishing mill unit passage.Locating piece is welded on the housiung separator of each frame, and makes locating piece directly over steel wire.Contact-making surface four limits of locating piece and housiung separator are welded, and make locating piece and housiung separator be linked as firmly one.
The locating piece size is determined according to finishing mill housiung separator size.General, length >=the 200mm on plane on locating piece (placing the plane of plummet magnet), the perpendicular anchor point equates with the vertical range of perpendicular anchor point with respect to horizontal edge on locating piece with respect to the horizontal range of horizontal edge on locating piece, is 50mm; Width >=the 100mm on plane on locating piece (placing the plane of plummet magnet); Perpendicular anchor point wire casing width is 1mm.
The marking central point: the base of plummet is inhaled to the upper surface at locating piece, adjust perpendicular and make the plummet tip aim at steel wire, the point that perpendicular is contacted with locating piece is denoted as anchor point, carves a groove that 1mm is wide at the anchor point place.This groove is as the central point of demarcating from now on, for the posting plumb line.
When the inventive method is implemented again, because all having the side guiding center, every finishing mill indicates point, each side is led the aperture demarcation does not need to draw steel wire to indicate center line, each rolling mill is measured to demarcate and is not interfere with each other, be difficult for occurring measuring error, save simultaneously and draw the steel wire time, save the time of doing over again after measuring error, improved efficiency.Complete mm finishing mill unit 7 rolling mill sides at every turn and lead an aperture demarcation need 30 minutes.Like this, the each demarcation saves time approximately 130 minutes, greatly shortened the nominal time, and lifting side beacon is fixed exactness.General, needing per month to demarcate three times, the moon saves time approximately 390 minutes, by per hour producing 600 tons of coil of strips, calculates, and can produce per month 3900 tons of coil of strips more, and the accumulative total economic benefit is very huge.
Claims (1)
1. a hot-rolling finishing mill group side is led the aperture quick calibrating method, it is characterized in that:
(1) determine finishing mill frame central anchor point: with theodolite measure respectively before the first milling train with last rolling mill after the central point of milling train channel width direction; After first milling train side leading and last rolling mill side are led, set up respectively two for drawing the simple rack of establishing steel wire, weight is fastened at steel wire two makes steel wire stretching; The height of simple rack and position should be adjusted to guarantees that steel wire passes through the roller gap of first milling train to last rolling mill, simultaneously not with the first milling train to any object contact in the milling train passage of last rolling mill; This steel wire is as the center line of mm finishing mill unit milling train passage, and each frame side of mm finishing mill unit is led the mid point of width on this center line;
(2) locating piece of the weldering of the housiung separator central spot above each finish rolling pusher side is led: the locating piece size is determined according to finishing mill housiung separator size:
If housiung separator is round steel or pipe: 2R-d >=e >=R (I)
Or housiung separator is square steel or square tube: H >=e >=H/2 (II)
In formula: R is the housiung separator radius, and d is the vertical range of perpendicular anchor point with respect to horizontal edge on locating piece, and e is arc surface height under locating piece, and H is the housiung separator profile height;
(3) indicate finishing mill frame central anchor point on locating piece: the groove that steel wire correspondence position on the locating piece of each frame is carved to wide 1mm; Plummet is hung on the locating piece at each housiung separator middle part of mm finishing mill unit, makes perpendicular pass through groove, the plummet tip aligns steel wire, and perpendicular corresponding position on locating piece is the some position, side guiding center that steel wire indicates;
(4) according to finishing mill frame central anchor point on locating piece, the finish rolling pusher side being led to aperture implements to demarcate: measure the distance between perpendicular and frame both sides flipper guide with ruler, obtain the aperture measurement value that the finishing stand side is led every side; And measured value is inputted respectively to data field in the automatic control system of hot-rolling finishing mill assembly cover, make side in automatic control system lead opening value identical with the field measurement value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210113900 CN102641895B (en) | 2012-04-18 | 2012-04-18 | Side guide opening quick calibration method for hot-continuous-rolling finishing mill group |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210113900 CN102641895B (en) | 2012-04-18 | 2012-04-18 | Side guide opening quick calibration method for hot-continuous-rolling finishing mill group |
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| Publication Number | Publication Date |
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| CN102641895A CN102641895A (en) | 2012-08-22 |
| CN102641895B true CN102641895B (en) | 2013-12-25 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921769B (en) * | 2012-10-18 | 2015-02-18 | 宁波钢铁有限公司 | Rapid calibration method for hot-rolled coiled side guide plates |
| CN104209368B (en) * | 2013-06-04 | 2016-03-09 | 山西太钢不锈钢股份有限公司 | The method measured and demarcate is led in a kind of hot continuous rolling coiling machine front roller-way side |
| CN107537869B (en) * | 2017-07-07 | 2019-06-14 | 首钢京唐钢铁联合有限责任公司 | A method of calibration hot-rolling plate is with finishing mill inlet side-guiding-board |
| CN111014312B (en) * | 2019-12-06 | 2021-04-02 | 北京科技大学设计研究院有限公司 | Method for determining initial angle of crank when opening degree of side guide plate is measured by using code disc |
| CN113275392B (en) * | 2020-02-20 | 2022-06-28 | 宝山钢铁股份有限公司 | Full-automatic calibration method for opening degree of side guide plate of heavy and medium plate mill |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0985461A1 (en) * | 1998-02-27 | 2000-03-15 | Nippon Steel Corporation | Sheet rolling method and sheet rolling mill |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201436094U (en) * | 2009-06-16 | 2010-04-07 | 上海梅山钢铁股份有限公司 | Side guide demarcating device for coiler |
| CN201997570U (en) * | 2010-12-15 | 2011-10-05 | 武汉钢铁(集团)公司 | Automatic calibrating device capable for hot-rolling rolled side guide |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0985461A1 (en) * | 1998-02-27 | 2000-03-15 | Nippon Steel Corporation | Sheet rolling method and sheet rolling mill |
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