CN103934425A - Hydraulic dynamic secondary cooling water width cut control system - Google Patents
Hydraulic dynamic secondary cooling water width cut control system Download PDFInfo
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- CN103934425A CN103934425A CN201410161029.8A CN201410161029A CN103934425A CN 103934425 A CN103934425 A CN 103934425A CN 201410161029 A CN201410161029 A CN 201410161029A CN 103934425 A CN103934425 A CN 103934425A
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Abstract
A hydraulic dynamic secondary cooling water width cut control system comprises a valve block. A first guide rod and a second guide rod penetrate through through holes in the two sides of the valve body. A piston rod of an oil cylinder penetrates through the middle of the valve block. One side of a connecting plate, the first guide rod, the second guide rod and the piston rod are combined into a whole, and the other side of the connecting plate is connected with a spraying rack. A first oil hole is formed in the oil cylinder to be communicated with a rod cavity, and a second oil hole is formed in the oil cylinder to be communicated with a piston cavity. When pressure oil enters the rod cavity through the first oil hole, the piston rod is pushed to drive the connecting plate, the first guide rod and the second guide rod to retract, and oil in the piston cavity flows out through the second oil hole. Similarly, when pressure oil enters the piston cavity through the second oil hole, the piston rod is pushed to drive the connecting plate, the first guide rod and the second guide rod to stretch out, and oil in the rod cavity flows out through the first oil hole. A displacement sensor and the oil cylinder are connected into a whole through threads. The spraying range and the spraying angle of secondary cooling water are changed by moving the spraying rack, for thick plate casting, corner supercooling of slabs can be obviously reduced, and transverse fracture of corners is avoided.
Description
Technical field
The present invention relates to slab casting machine casting technique field, be specifically related to a kind of hydraulic pressure dynamic secondary cooling water width and cut control system.
Background technology `
In casting process, angle transverse fissure is conventionally because slab unbalanced stress in aligning process causes.As long as steel slab surface temperature is avoided the secondary brittle zone that steel grade is corresponding, (intensity of ferrous materials is the monotone increasing with the decline of temperature generally, but different in brittle zone.Below molten steel solidification temperature more among a small circle in, the decline of the intensity temperature of ferrous materials, sharply rises to a steady state value; And iron and steel temperature is between 1100～700 DEG C, ferrous materials intensity drops sharply to local minimum, Here it is brittle zone), stress just can not cause defect.In modern design for continuous casting machine, it is above to avoid face crack that surface temperature remains on brittle zone temperature, but because strand corner part is conducted heat towards both direction, heat loss is larger, and corner temperature is relatively difficult to control.
Particularly, for slab casting machine, due in casting process, slab thickness direction size is large, and the change of cast width can make problem more serious, therefore will optimize the cast that arrangement of nozzles adapts to different base wide plate bases.
Meanwhile, it is excessively cold that a challenge subjects of continuous casting technology reduces slab corner exactly, to avoid angle transverse fissure.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of hydraulic pressure dynamic secondary cooling water width to cut control system, this device can be according to the difference of cast casting blank specification, change in real time spray scope and the angle of secondary cooling water by mobile spraying rack, cast for slab, more can significantly reduce slab corner excessively cold, avoid angle transverse fissure.
In order to achieve the above object, the technical scheme that the present invention takes is:
A kind of hydraulic pressure dynamic secondary cooling water width is cut control system, comprise valve piece 5, the first guide post 2-1, the second guide post 2-2 is through two side through hole of valve piece 5, the piston rod 3 of oil cylinder 4 is through the middle part of valve piece 5, connecting plate 1 one sides and the first guide post 2-1, the second guide post 2-2 and piston rod 3 are by screw A1 unification body, connecting plate 1 opposite side is connected with spraying rack, oil cylinder 4 is provided with the first oilhole a and Gan Qiang UNICOM, oil cylinder 4 is provided with the second oilhole b and Sai Qiang UNICOM, when pressure oil enters bar chamber from the first oilhole a, promote piston rod 3 and drive connecting plate 1 and the first guide post 2-1, the second guide post 2-2 retracts, plug chamber oil flows out through the second oilhole b, the same pressure oil of working as enters plug chamber from the second oilhole b, promotes piston rod 3 and drives connecting plate 1 and the first guide post 2-1, the second guide post 2-2 to stretch out, and bar chamber oil flows out through the first oilhole a.
Displacement transducer 6 is integrally connected by screw thread and oil cylinder 4, in the time that piston rod 3 stretches out, retracts in order to detect stretch out, retraction distance, and the data that detect and setting data are compared in real time, forming a displacement closed loop, control piston bar 3 requires the distance of stretching out, retracting.
Technique effect of the present invention is:
1. by changing the relative position of wide of spraying rack and slab, and then adjust the distance in it and slab bight, to avoid particle water to be directly injected to strand bight.
2. ensure that bight is consistent with the current distribution density in injection projected area of the nozzle on the spraying rack of middle part.
3. consider to drench the jet density of the nozzle overlapping portion on frame simultaneously, avoid occurring spike.
4. consider wide scull size of diverse location on casting machine, set to optimize the nozzle location drenching on frame.
Can, according to the difference of cast casting blank specification, change in real time spray scope and the angle of secondary cooling water by mobile spraying rack by this device, for slab casting, more can significantly reduce slab corner excessively cold, avoid angle transverse fissure.
Brief description of the drawings
Accompanying drawing is structural representation of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
Referring to accompanying drawing, a kind of hydraulic pressure dynamic secondary cooling water width is cut control system, comprise valve piece 5, the first guide post 2-1, the second guide post 2-2 is through two side through hole of valve piece 5, the piston rod 3 of oil cylinder 4 is through the middle part of valve piece 5, connecting plate 1 one sides and the first guide post 2-1, the second guide post 2-2 and piston rod 3 are by screw A1 unification body, connecting plate 1 opposite side is connected with spraying rack, the first guide post 2-1, the second guide post 2-2 moves in valve piece 5, piston rod 3 is stretched out, retraction play the guiding role, oil cylinder 4 is provided with the first oilhole a and Gan Qiang UNICOM, oil cylinder 4 is provided with the second oilhole b and Sai Qiang UNICOM, displacement transducer 6 is integrally connected by screw thread and oil cylinder 4.
Operation principle of the present invention is:
When pressure oil enters bar chamber from the first oilhole a, promote piston rod 3 and drive connecting plate 1 and the first guide post 2-1, the second guide post 2-2 to retract, plug chamber oil flows out through the second oilhole b; The same pressure oil of working as enters plug chamber from the second oilhole b, promotes piston rod 3 and drives connecting plate 1 and the first guide post 2-1, the second guide post 2-2 to stretch out, and bar chamber oil flows out through the first oilhole a.Displacement transducer 6 detects the distance that piston rod 3 stretches out, retracts in real time, and the data that detect and setting data are compared in real time, forms a displacement closed loop, and control piston bar 3 requires the distance of stretching out, retracting.
When in the situation that a displacement closed-loop control precision prescribed (approximately ± 5mm) is not too high, speed (about < 50mm/S) is lower, frequency response is very low, can not need to adopt the ratio or the servo-drive system that involve great expense to realize position closed loop, adopt cheap switch valve closed-loop control system can meet production engineering specifications completely, not only cost is low and system is less demanding to oil product cleannes, loop design is simply a lot, greatly reduces costs and maintenance cost.
This invention has been successfully applied on the conticaster of domestic certain steel mill, on-the-spot feedback effects is fine, meet production engineering specifications completely, the parts that the present invention does not describe in detail in addition and structure belong to well-known components and common structure or the conventional means of the industry, here just not narration one by one.
Claims (2)
1. a hydraulic pressure dynamic secondary cooling water width is cut control system, it is characterized in that: comprise valve piece (5), the first guide post (2-1), the second guide post (2-2) is through two side through hole of valve piece (5), the piston rod (3) of oil cylinder (4) is through the middle part of valve piece (5), connecting plate (1) one side and the first guide post (2-1), the second guide post (2-2) and piston rod (3) pass through screw (A1) unification body, connecting plate (1) opposite side is connected with spraying rack, oil cylinder (4) is provided with the first oilhole (a) and Gan Qiang UNICOM, oil cylinder (4) is provided with the second oilhole (b) and Sai Qiang UNICOM, when pressure oil enters bar chamber from the first oilhole (a), promote piston rod (3) and drive connecting plate (1) and the first guide post (2-1), the second guide post (2-2) is retracted, plug chamber oil flows out through (b) duct, the same pressure oil of working as enters plug chamber from the second oilhole (b), promotes piston rod (3) and drives connecting plate (1) and the first guide post (2-1), the second guide post (2-2) to stretch out, and bar chamber oil flows out through the first oilhole (a).
2. a kind of hydraulic pressure dynamic secondary cooling water width according to claim 1 is cut control system, it is characterized in that: displacement transducer (6) is integrally connected by screw thread and oil cylinder (4), in the time that piston rod (3) stretches out, retracts in order to detect stretch out, retraction distance, and the data that detect and setting data are compared in real time, form a displacement closed loop, control piston bar (3) requires the distance of stretching out, retracting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410161029.8A CN103934425A (en) | 2014-04-18 | 2014-04-18 | Hydraulic dynamic secondary cooling water width cut control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410161029.8A CN103934425A (en) | 2014-04-18 | 2014-04-18 | Hydraulic dynamic secondary cooling water width cut control system |
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| Publication Number | Publication Date |
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| CN103934425A true CN103934425A (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410161029.8A Pending CN103934425A (en) | 2014-04-18 | 2014-04-18 | Hydraulic dynamic secondary cooling water width cut control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105458206A (en) * | 2016-01-21 | 2016-04-06 | 中冶赛迪工程技术股份有限公司 | Secondary cooling method of plate billets |
| CN110405169A (en) * | 2019-07-26 | 2019-11-05 | 首钢集团有限公司 | A kind of improvement board briquette spray system and continuous casting system |
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| US4030531A (en) * | 1975-02-04 | 1977-06-21 | Mannesmann Aktiengesellschaft | Method and apparatus for monitoring and obviating deformations of continuous castings |
| JPS59178158A (en) * | 1983-03-25 | 1984-10-09 | Sumitomo Heavy Ind Ltd | Billet cooler for continuous casting installation |
| US4951734A (en) * | 1987-04-13 | 1990-08-28 | Thyssen Stahl Ag | Process for the production of a steel strip |
| JPH07136752A (en) * | 1993-11-18 | 1995-05-30 | Nippon Steel Corp | Secondary cooling method for slab in continuous casting and its device |
| JPH0839222A (en) * | 1994-07-25 | 1996-02-13 | Nippon Steel Corp | Apparatus for uniformizing temperature in width direction of cast slab in twin roll continuous caster |
| JP2004167521A (en) * | 2002-11-19 | 2004-06-17 | Jfe Steel Kk | Apparatus and method for secondary-cooling of continuously cast slab |
| JP2009202166A (en) * | 2008-02-26 | 2009-09-10 | Jfe Steel Corp | Secondary cooling method and secondary cooling device in continuous casting |
| CN102170983A (en) * | 2008-10-01 | 2011-08-31 | Sms西马格股份公司 | Device and method for secondary cooling in a continuous casting system |
| CN102430733A (en) * | 2011-12-21 | 2012-05-02 | 天津钢铁集团有限公司 | Secondary cooling water amplitude-cutting control method of slab continuous casting machine |
| CN102489680A (en) * | 2011-12-28 | 2012-06-13 | 东北大学 | System and method for intelligently controlling temperature of internal arc angle part in straightening region of wide and thick plate blank |
| CN103291685A (en) * | 2013-05-17 | 2013-09-11 | 中国重型机械研究院股份公司 | Low-load high speed/heavy-load low speed cylinder |
| CN203853532U (en) * | 2014-04-18 | 2014-10-01 | 中国重型机械研究院股份公司 | Hydraulic dynamic secondary cooling water size cutting controller |
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2014
- 2014-04-18 CN CN201410161029.8A patent/CN103934425A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4030531A (en) * | 1975-02-04 | 1977-06-21 | Mannesmann Aktiengesellschaft | Method and apparatus for monitoring and obviating deformations of continuous castings |
| JPS59178158A (en) * | 1983-03-25 | 1984-10-09 | Sumitomo Heavy Ind Ltd | Billet cooler for continuous casting installation |
| US4951734A (en) * | 1987-04-13 | 1990-08-28 | Thyssen Stahl Ag | Process for the production of a steel strip |
| JPH07136752A (en) * | 1993-11-18 | 1995-05-30 | Nippon Steel Corp | Secondary cooling method for slab in continuous casting and its device |
| JPH0839222A (en) * | 1994-07-25 | 1996-02-13 | Nippon Steel Corp | Apparatus for uniformizing temperature in width direction of cast slab in twin roll continuous caster |
| JP2004167521A (en) * | 2002-11-19 | 2004-06-17 | Jfe Steel Kk | Apparatus and method for secondary-cooling of continuously cast slab |
| JP2009202166A (en) * | 2008-02-26 | 2009-09-10 | Jfe Steel Corp | Secondary cooling method and secondary cooling device in continuous casting |
| CN102170983A (en) * | 2008-10-01 | 2011-08-31 | Sms西马格股份公司 | Device and method for secondary cooling in a continuous casting system |
| CN102430733A (en) * | 2011-12-21 | 2012-05-02 | 天津钢铁集团有限公司 | Secondary cooling water amplitude-cutting control method of slab continuous casting machine |
| CN102489680A (en) * | 2011-12-28 | 2012-06-13 | 东北大学 | System and method for intelligently controlling temperature of internal arc angle part in straightening region of wide and thick plate blank |
| CN103291685A (en) * | 2013-05-17 | 2013-09-11 | 中国重型机械研究院股份公司 | Low-load high speed/heavy-load low speed cylinder |
| CN203853532U (en) * | 2014-04-18 | 2014-10-01 | 中国重型机械研究院股份公司 | Hydraulic dynamic secondary cooling water size cutting controller |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105458206A (en) * | 2016-01-21 | 2016-04-06 | 中冶赛迪工程技术股份有限公司 | Secondary cooling method of plate billets |
| CN110405169A (en) * | 2019-07-26 | 2019-11-05 | 首钢集团有限公司 | A kind of improvement board briquette spray system and continuous casting system |
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Application publication date: 20140723 |