CN101549400B - Implementation of submerged nozzle rapid accurate centering by using laser and monitoring method - Google Patents
Implementation of submerged nozzle rapid accurate centering by using laser and monitoring method Download PDFInfo
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- CN101549400B CN101549400B CN2009100844305A CN200910084430A CN101549400B CN 101549400 B CN101549400 B CN 101549400B CN 2009100844305 A CN2009100844305 A CN 2009100844305A CN 200910084430 A CN200910084430 A CN 200910084430A CN 101549400 B CN101549400 B CN 101549400B
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Abstract
Implementation of submerged nozzle rapid accurate centering by using laser and monitoring method, belonging to metal continuous casting technology field. First, calibrating submerged nozzle accuratelyand centering it, then two laser transmitters are fixing mounted on any two sites around crystallizer to make indicating position of the transmitted laser is centre of the width and thickness directi on of the pre-calibrated submerged nozzle, sticking asbestos or other refractory material dot as markers, then measuring position of the two markers on the submerged nozzle accurately and marking at the same position of the other submerged nozzles; centering according to the laser indicated position when the submerged nozzle is mounted. The advantages are capable of centering the submerged nozzle accurately without interference from human factor; saving staff for visual measurement; capable of centering in width direction and thickness direction the bidirectional rapidly; monitoring can be proceeded in using process; low cost and easy to operate.
Description
Technical field
The invention belongs to metal continuous casting technology field, a kind of method of utilizing laser instrument to realize submersed nozzle centering and monitoring quick and precisely particularly is provided, has been used for solving aborning mouth of a river centering inaccuracy, the centering time is long and ND problem appears misaligning in production process.
Background technology
The core development of high efficiency continuous casting is the production of high pulling rate, high-quality zero defect strand.The quality of continuous casting steel billet depends on the behavior of molten steel in crystallizer largely.And the factor that influences the solidification of molten steel behavior mainly is the flow field of molten steel in the crystallizer except that the vibration and cooling of crystallizer.It is moving to the impact and the molten steel ground roll of base shell that reasonably the flow field can reduce to flow thigh, is beneficial to the fusing of covering slag, prevents being involved in and base shell inhomogeneous growth of covering slag, promotes inclusion floating.The crystallizer flow field depends primarily on the situation that molten steel goes out submersed nozzle, and it then is one of major reason that causes problems that submersed nozzle misaligns.The scene generally is that a people commands by range estimation at a distance in distance in actual production at present, other people carry out the centering work of submersed nozzle, cause the error of centering bigger like this, if and (as changing the mouth of a river) generation that meets accident in the production process misaligns difficult the discovery, and in sheet billet continuous casting, generally only carry out the centering of width, be difficult for monitoring at thickness direction, therefore the invention provides a kind of simple and easy to do method of utilizing laser instrument to realize submersed nozzle centering and monitoring quick and precisely.
Summary of the invention
The present invention aims to provide a kind of method of utilizing laser instrument to realize submersed nozzle rapid and accurate centering and monitoring, solves in submersed nozzle centering inaccuracy in the continuous casting production, centering time length and the production ND problem to occur misaligning.
The present invention at first installs submersed nozzle, and this mouth of a river demarcated, its width that accurately is positioned at crystallizer under the 20mm-300mm insertion depth (if being arranged, can repeatedly be demarcated different insertion depths with the thickness direction center, determine corresponding indication point), wantonly two places fixedly mount two generating lasers respectively around crystallizer then, the position of laser indication is the submersed nozzle width of the good centering of prior demarcation and the center of thickness direction, this moment, laser can demonstrate two indication points on this mouth of a river, paste asbestos (or other refractory materials) points (the point diameter is identical with laser spot) at the indication point place as mark (also can adopt other modes to make marks or in the production process of the mouth of a river, add mark), accurately measure this two positions that are marked on this submersed nozzle then, and two marks are pasted in the same position on other mouths of a river; In the actual production, load onto and carry out centering according to the position of laser indication behind the submersed nozzle and can carry out the two-way centering of the thickness direction of crystallizer width fast and accurately, also can in time find the situation that occurs misaligning in process of production.
Submersed nozzle of the present invention is a certain definite crystallizer thickness, and crystallizer thickness changes then to be demarcated again.Described submersed nozzle can be oblate, circular and other Any shape.
Under a certain insertion depth, accurately be positioned at the width and the thickness direction center of crystallizer,, determine corresponding indication point if there is different insertion depths repeatedly to demarcate.
Described generating laser emission circular laser beam, or the point of respective shapes on the laser beam of other shapes and the corresponding submersed nozzle; Wantonly two convenient locations fixedly mount two generating lasers respectively around crystallizer, also can adopt many generating lasers and corresponding a plurality of points on submersed nozzle; Described around the crystallizer wantonly two convenient locations fixedly mount two generating lasers respectively, orientation employing head can also can be reserved on the surrounding buildings framework in the infield, can accurately shine indication point with laser and be as the criterion.Two laser indicating positions are not on a horizontal plane.
Described crystallizer can be for producing the used crystallizers of Any shape strand such as slab, square billet, circle base, rectangular bloom.
Advantage of the present invention and effect: 1. accurate submersed nozzle centering is not subjected to interference from human factor; 2. save the staff of range estimation; 3. can carry out (width and thickness direction are two-way) centering fast; 4. can monitor in the use, prevent and misalign; 5. cost is low, and is simple and easy to do.
The specific embodiment
At first install submersed nozzle, and this mouth of a river demarcated, make its width that under a certain insertion depth, accurately is positioned at crystallizer and thickness direction center, wantonly two convenient locations fixedly mount two generating lasers respectively around crystallizer then, the position of laser indication is the submersed nozzle width of the good centering of prior demarcation and the center of thickness direction, and two laser indicating positions are not on a horizontal plane; This moment, laser can demonstrate two indication points on this mouth of a river, paste asbestos (or other refractory materials) points (the point diameter is identical with laser spot) as mark at the indication point place, accurately measure this two positions that are marked on this submersed nozzle then, and two marks are pasted in the same position on other mouths of a river; In the actual production, load onto and carry out centering according to the position of laser indication behind the submersed nozzle and can carry out the two-way centering of the thickness direction of crystallizer width fast and accurately, also can in time find the situation that occurs misaligning in process of production.
Embodiment 1:
Certain steel mill, former employing artificial visually examine width submersed nozzle centering method, accuracy is 5mm, is 1mm after employing the method;
Embodiment 2:
Certain steel mill, former employing artificial visually examine method is carried out centering, needs 2min consuming time, centering 30s consuming time after employing the method;
Embodiment 3:
Certain steel mill, former employing artificial visually examine method is carried out centering, needs two operative employees to cooperate simultaneously and finishes, and only needs a people to get final product after employing the method.
Claims (5)
1. method of utilizing laser instrument to realize submersed nozzle rapid and accurate centering and monitoring, it is characterized in that: at first install the submersed nozzle that is used to demarcate, and this submersed nozzle carried out centering, make its width that under the 20mm-300mm insertion depth, accurately is positioned at crystallizer and thickness direction center, wantonly two convenient locations fixedly mount two generating lasers respectively around crystallizer then, the position of laser indication is the submersed nozzle width of prior centering and the center of thickness direction, this moment, laser can demonstrate two indication points on this submersed nozzle, paste asbestos or other refractory material points as mark at the indication point place, accurately measure this two positions that are marked on this submersed nozzle then, and two marks are pasted in the same position on the submersed nozzle that does not make marks of other same sizes; Load onto behind the submersed nozzle that has mark and carry out centering, realize the two-way centering of crystallizer width and thickness direction fast and accurately according to the position of laser indication.
2. it is characterized in that in accordance with the method for claim 1: described submersed nozzle is oblate, circular or other Any shape.
3. in accordance with the method for claim 1, it is characterized in that: described around the crystallizer wantonly two places fixedly mount two generating lasers respectively, the infield is on the surrounding buildings framework, perhaps adopts head to reserve the orientation, can accurately shine indication point with laser and be as the criterion.
4. it is characterized in that in accordance with the method for claim 1: described crystallizer is for producing slab, square billet, circle base or the used crystallizer of rectangular bloom.
5. it is characterized in that in accordance with the method for claim 1: described asbestos or other refractory material point diameter of pasting at the indication point place is identical with laser spot.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100844305A CN101549400B (en) | 2009-05-15 | 2009-05-15 | Implementation of submerged nozzle rapid accurate centering by using laser and monitoring method |
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| CN2009100844305A CN101549400B (en) | 2009-05-15 | 2009-05-15 | Implementation of submerged nozzle rapid accurate centering by using laser and monitoring method |
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| CN101549400A CN101549400A (en) | 2009-10-07 |
| CN101549400B true CN101549400B (en) | 2011-01-05 |
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Families Citing this family (8)
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| CN103624226B (en) * | 2012-08-14 | 2015-08-26 | 宝钢特钢有限公司 | The localization method of middle water containing opening and device thereof |
| CN103409591B (en) * | 2013-08-23 | 2015-01-07 | 中国二十二冶集团有限公司 | Method for installing and centering oxygen lance as well as vaporized flue and converter mouth |
| CN104493151A (en) * | 2014-12-27 | 2015-04-08 | 江苏苏南重工机械科技有限公司 | Quick ladle alignment method and special device |
| CN108620573B (en) * | 2018-04-18 | 2020-02-04 | 无锡市南方耐材有限公司 | Infrared positioning device for mounting iron shell of immersed water inlet and working method |
| CN110961583B (en) * | 2018-09-28 | 2024-10-11 | 宝钢工程技术集团有限公司 | Ladle positioning device adopting laser scanning and using method thereof |
| CN114101652A (en) * | 2021-12-02 | 2022-03-01 | 山东钢铁集团日照有限公司 | Control method for centering precision of continuous casting submersed nozzle |
| CN115026271B (en) * | 2022-05-25 | 2024-04-19 | 江阴兴澄特种钢铁有限公司 | Implementation method of continuous casting nozzle installation measurement calibration system |
| CN114799151A (en) * | 2022-06-01 | 2022-07-29 | 山东莱钢永锋钢铁有限公司 | Process method capable of realizing quick centering of tundish |
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| CN1377747A (en) * | 2001-04-03 | 2002-11-06 | 董淑冬 | Control system for middle ladle plunger of continuous casting machine |
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| CN1377747A (en) * | 2001-04-03 | 2002-11-06 | 董淑冬 | Control system for middle ladle plunger of continuous casting machine |
| CN101210809A (en) * | 2006-12-28 | 2008-07-02 | 上海建设路桥机械设备有限公司 | Continuous casting machine sector section centering measurement method |
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Address after: 100041 Shijingshan Road, Shijingshan District, Shijingshan District, Beijing Patentee after: Shougang Group Co. Ltd. Address before: 100041 Shijingshan Road, Shijingshan District, Shijingshan District, Beijing Patentee before: Capital Iron & Steel General Company |
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