CN102755999B - Interstand cooling device for hot-rolled H-shaped steel - Google Patents
Interstand cooling device for hot-rolled H-shaped steel Download PDFInfo
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- CN102755999B CN102755999B CN201210230045.9A CN201210230045A CN102755999B CN 102755999 B CN102755999 B CN 102755999B CN 201210230045 A CN201210230045 A CN 201210230045A CN 102755999 B CN102755999 B CN 102755999B
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Abstract
The invention provides an interstand cooling device for hot-rolled H-shaped steel. The interstand cooling device comprises a plurality of cooling sections, solenoid valves, and flow control units, wherein the plurality of cooling sections are symmetrically and respectively arranged at two sides of an interstand of a finishing mill set; each cooling section is provided with a plurality of water spraying ports; the plurality of cooling sections are respectively connected with a head water pipe through flexible hoses; the solenoid valves are correspondingly arranged at the head water pipe and capable of controlling the water pressure and the water volume of the plurality of cooling sections; and the flow control units are used for controlling the degrees of opening of the solenoid valves according to the temperature of a rolled H-shaped steel component.
Description
Technical field
The present invention relates to a kind of hot rolled H-shaped interstand cooling device, particularly relating to the hot rolled H-shaped interstand cooling device carrying out to the temperature of hot rolled H-shaped finishing mill outlet side be reduced cooling between frame.
Background technology
Between the frame in current H profile steel production line finish rolling stage, cooling control technology is also in the laboratory research stage, and the temperature in current domestic H profile steel manufacturing enterprise finish rolling stage controls to treat that the mode of temperature realizes before controlling breaking down temperature, rolling rhythm and finish rolling.The problem caused thus has:
(1) due to the deformation characteristics of H profile steel, cause H profile steel product edge of a wing temperature too high, temperature distributing disproportionation.
(2) distortion of mm finishing mill unit major part is at recrystallization zone (>950 DEG C), and only, a few passage is in Unhydrated cement, and deformation of rolled wire mainly concentrates on recrystallization zone, is unfavorable for the acquisition of shaped steel product superperformance.
(3) rolling of H profile steel, pass is set, the process adjustments of the operation of rolling realizes mainly through adjustment pressure, in the operation of rolling, comparatively difficulty is realized to temperature controlled rolling, the narrow range of technology controlling and process, the limitation of rolling mill practice temperature controlled rolling have impact on the distribution of pressure distribution between roughing and finish rolling and each passage pressure of mm finishing mill unit, finally have impact on dimensional accuracy and the performance of product.
In order to control better, large H profile steel edge of a wing temperature is too high, finishing temperature crosses the problems such as high, should control, reduce final rolling temperature in the strengthening finish rolling stage to the temperature of rolled piece.
At present, interstand cooling is ubiquity in belt steel rolling process, and the existing research at present of H profile steel interstand cooling, the main mode adopting aerosol cooling.
Publication number CN101537432 discloses a kind of interstand cooling control device, the cooling water water flooding regime of finishing mill is controlled, more precisely can control the steel billet temperature of finishing mill outlet side, and the increase and decrease frequency of cooling water inflow can be reduced further and realize controlling.Interstand cooling control device possesses: default control mechanism, it is to the interstand cooling device of finishing mill, to make the FDT(finish rolling outlet side temperature of steel plate) the mode controlled cooling model water yield consistent with desired target temperature, before steel plate is cooled water cooling, utilize steel billet temperature reasoning model to estimate FDT, based on cooling device between this presumption FDT computer rack cooling water inflow and generate default control export; Dynamic control mechanism, it obtains the quantity of state of the steel plate in rolling, calculates the amount of change of cooling water inflow and generate Dynamic controlling output based on its quantity of state; And interstand cooling instruction generation unit, it is exported by default control and Dynamic controlling output generates and exports interstand cooling instruction.
Publication number CN101422786 discloses a kind of frame-space controlled cooling method during rolling hot-roll H sectional iron.In the H profile steel operation of rolling, when not changing former rolling procedure and rhythm, utilizing remaining space between Continuous mill train frame, adopting the efficient aerosol type of cooling, carrying out Local cooling to outside the H profile steel edge of a wing.By the application of this technology, reduce the temperature on H profile steel leg waist connecting portion and the edge of a wing, reduce the H profile steel finish to gauge section temperature difference, the crystal grain at leg waist connecting portion and position, the edge of a wing obtains refinement, H profile steel product residual stress significantly reduces, avoid web cooling wave and reduce cracking in webs phenomenon, thus increasing substantially the lumber recovery of H profile steel, improving H profile steel comprehensive mechanical property.The H profile steel that this technology is produced meets the requirement of country's " hot rolled H-shaped and Slit T " GB/T11263-2005 standard completely.
Summary of the invention
The present invention proposes to solve problem as above, its object is to provide a kind of hot rolled H-shaped interstand cooling device that can carry out reasonable temperature control to the H profile steel rolled piece in finishing stands.
Hot rolled H-shaped interstand cooling device provided by the present invention, comprise: multiple cooling section, both sides between the frame that the plurality of cooling section is arranged on mm finishing mill unit respectively symmetrically, and each cooling section is provided with multiple water injection nozzle, described multiple cooling section is connected to water-main respectively by flexible pipe; Magnetic valve, this magnetic valve is arranged on described water-main accordingly, for controlling the hydraulic pressure and the water yield that are supplied to described multiple cooling section; Flow controlling unit, according to the temperature of described H profile steel rolled piece, controls the aperture of described magnetic valve.
Further, also comprise multiple support, the plurality of support is separately positioned on roll change buggy, and supports described multiple cooling section respectively and cool the edge of a wing of described H profile steel.
Further, described cooling section can rotate freely on the bracket.
Further, described support is slidably disposed on described roll change buggy, with the distance between the edge of a wing regulating described cooling section and described H profile steel.
Further, arrange four cooling sections and a water-main in each unit correspondence, described four cooling sections are connected to a described water-main.
Further, described water-main is connected to water main by flexible pipe, and this water main is connected to water unit.
Further, also comprise thermometal detector, this thermometal detector is arranged on before and after described mm finishing mill unit, passes through for detecting described H profile steel rolled piece.
Further, when described thermometal detector detects described H profile steel rolled piece, detection signal is outputted to described flow controlling unit by described thermometal detector, and described flow controlling unit, according to described detection signal, controls the opening and closing of described magnetic valve.
Further, also comprise multiple temperature sensor, this temperature sensor is separately positioned on each passage of H profile steel production line, for detecting the temperature of H profile steel in described each passage.
Further, described flow controlling unit, according to the temperature of each described temperature sensor, controls the aperture of described each magnetic valve.
According to hot rolled H-shaped interstand cooling device provided by the present invention, following effect can be obtained: online overall construction design is reasonable, easy to installation and maintenance, result of use is good, especially in finish rolling overall process, to thick, in, the forward and backward of every time rolling of essence all can require carry out reasonable temperature control according to designer, and H profile steel product residual stress is significantly reduced, increase substantially the lumber recovery of H profile steel, can enhance product performance.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of H profile steel finishing stands of the present invention.
Fig. 2 is the schematic diagram of controlled cooling model device of the present invention.
Fig. 3 is the state diagram that controlled cooling model device of the present invention is arranged between H profile steel frame.
Fig. 4 is cooling section rotation process schematic diagram of the present invention, and wherein, (a) represents cooling section duty, and (b) represents the state after dismounting top roll, and (c) represents the state rotating cooling section, and (d) represents the state after dismounting lower roll.
Fig. 5 is bracket slide fixed mechanism schematic diagram of the present invention, and wherein, (a) represents that support is fixed on the state diagram of roll change buggy, and (b) represents the structure chart of frame bottom, and (c) represents the structure chart of roll change buggy upper bracket fixed part.
Fig. 6 is the control flow chart that the present invention carries out controlled cooling model between H profile steel frame.
Symbol description
1 is universal roughing mill (UR), and 2 is edging mill (E), and 3 is universal finishing mill (UF), and 4 is H profile steel rolled piece, 5 is roll change buggy, and 6 is cooling section, and 7 is flexible pipe, 8 is water main, and 9 is magnetic valve, and 10 is support, 11 is water injection nozzle, and 12 is water-main, and 13 is flexible pipe, 14 is stator, and 15 is through hole, and 16 is fixed head, 17 is sliding tray, and 18 is flow controlling unit, and 19 is thermometal detector (HMD).
Detailed description of the invention
Below, the embodiment that present invention will be described in detail with reference to the accompanying.
Fig. 1 is the schematic diagram of H profile steel finishing stands of the present invention.As shown in Figure 1, H profile steel finishing mill of the present invention comprises universal roughing mill 1, edging mill 2, universal finishing mill 3 and roll change buggy 5, H profile steel finishing stands of the present invention mainly through roughing, edging, this three phases of finish rolling, has come respectively by above-mentioned universal roughing mill 1, edging mill 2, universal finishing mill 3.Each milling train has frame, is provided with the roll of relative rolling in frame, feed inlet and outlet, in frame, the feed inlet and outlet place of roll is provided with guide support.
Fig. 2 is the schematic diagram of controlled cooling model device of the present invention.As shown in Figure 2, controlled cooling model device of the present invention arranges 4 groups of cooling sections 6 respectively at each milling train, these 4 groups of cooling sections 6 are separately positioned on milling train, i.e. roll all around, each cooling section 6 of each milling train is connected to water-main 12 by flexible pipe 7, a battery valve 9 is utilized to control, and each cooling section 6 is provided with multiple water injection nozzle 11, cooling section 6 is connected to roll change buggy 5 by support 10.Here, cooling section 6 is formed as elongate in shape, and usual and rolled piece be arranged in parallel, each cooling section 6 can be provided with six water injection nozzles 11.But the quantity of water injection nozzle 11 is not limited thereto, according to cooling needs, arrange more or less.
Each milling train is provided with accordingly a water-main 12, water-main 12 is connected to water main 8 by flexible pipe 13, therefore can facilitate roller replacing operation.Here, water main 8 is connected to water unit.
The controlled cooling model device of Fig. 2 is arranged on the state of H profile steel finishing mill as shown in Figure 3, the both sides all around of roll are arranged under the state that cooling section 6 is supported by support 10, be arranged on water injection nozzle 11 on cooling section 6 towards rolled piece, and cooling section 6 be arranged in parallel relative to rolled piece, cool outside the edge of a wing of the H profile steel after every time rolling.
In the present invention, cooling section 6 is set to can rotate freely in frame, thus avoids the operation hindering dismounting roller, facilitates roller replacing operation.
Fig. 4 is cooling section rotation process schematic diagram, and wherein, (a) represents cooling section duty, and (b) represents the state after dismounting top roll, and (c) represents the state rotating cooling section, and (d) represents the state after dismounting lower roll.As shown in Fig. 4 (c) He (d), by rotating cooling section, cooling section 6 can be avoided to hinder the disassembling section of lower roll.
Fig. 5 is bracket slide fixed mechanism schematic diagram of the present invention, and wherein, (a) represents that support is fixed on the state diagram of roll change buggy, and (b) represents the structure chart of frame bottom, and (c) represents the structure chart of roll change buggy upper bracket fixed part.
As shown in Fig. 5 (b), support is fixedly connected by welding on stator 14, and the two ends of stator 14 are respectively equipped with a through hole 15.
As shown in Fig. 5 (c), roll change buggy 5 is provided with for support bracket fastened fixed head 16, length direction along fixed head 16 is provided with two sliding trays 17, and the length direction center line of sliding tray 17 is consistent with the length direction center line of fixed head 16, and sliding tray 17 is formed as through fixed head 16.
As shown in Fig. 5 (a), when support 10 is fixed on roll change buggy, with the through through hole 15 of bolt and sliding tray 17, and at the other end of bolt nut set bolt, thus support 10 is fixed on roll change buggy.Further, by unclamping nut, support 10 can be made to move at the length direction of sliding tray 17, the distance between cooling section and the H profile steel edge of a wing can be regulated thus, be applicable to and the product of different size is cooled.
Except aforesaid way, the present invention can also adopt other modes to realize the fixing and slip of support on roll change buggy, such as, adopt common guide rail connection etc.
Fig. 6 is the control flow chart that the present invention carries out controlled cooling model between H profile steel frame.
Hot rolled H-shaped interstand cooling device of the present invention also comprises temperature control part, this temperature control part comprises flow controlling unit 18, thermometal detector 19 and magnetic valve 9, and thermometal detector 18 and magnetic valve 9 are connected to flow controlling unit 18 by distribution.At this, flow controlling unit 18 can be the computer equipment with CPU, memory etc.
In order to control more accurately rolled piece temperature, the present invention is provided with thermometal detector (HMD) 19 respectively in the front and back of mm finishing mill unit, follows the tracks of rolled piece, and the testing result of two HMD is input to flow controlling unit 18 respectively.When H profile steel rolled piece 4 enters mm finishing mill unit, the HMD before mm finishing mill unit detects rolled piece, and testing result is outputted to flow controlling unit 18, and flow controlling unit 18 opens magnetic valve 9 based on the testing result of HMD.Three magnetic valves 9 are sprayed water, and cool the rolled piece in finishing stands.After finish rolling, when the HMD after mm finishing mill unit detects rolled piece, its testing result outputs to flow controlling unit 18, and flow controlling unit 18 stops water spray based on the testing result shut electromagnetic valve 9 of HMD, completes the interstand cooling in finish rolling stage thus.
In addition, then the present invention at every time set temperature sensor of production line, for detecting the temperature of H profile steel rolled piece 4 in each passage, can also pass through the aperture of flow controlling unit 18 Controlling solenoid valve 9, control the water yield and the hydraulic pressure that are supplied to cooling section 6 thus, reach desired cooling effect.Here, flow controlling unit 18 can be independent of each other to the control of three magnetic valves 9, according to the temperature of H profile steel rolled piece 4 in every time, can carry out reasonable temperature control.
Hot rolled H-shaped interstand cooling device of the present invention, according to the Temperature Distribution in the rolling feature of H profile steel and the operation of rolling, only cools outside the edge of a wing of H profile steel.
Although the present invention arranges four groups of cooling sections for each milling train all around and is illustrated, the present invention is not limited thereto, and can arrange two, six etc., and arrange to bilateral symmetry between rolling-mill housing.
Hot rolled H-shaped interstand cooling device of the present invention compared with prior art, online overall construction design is reasonable, easy to installation and maintenance, result of use is good, especially in finish rolling overall process, to thick, in, the forward and backward of every time rolling of essence all can require carry out reasonable temperature control according to designer, and H profile steel product residual stress is significantly reduced, increase substantially the lumber recovery of H profile steel, can enhance product performance.
Claims (8)
1. a hot rolled H-shaped interstand cooling device, is characterized in that, comprise:
Multiple cooling section, both sides between the frame that the plurality of cooling section is arranged on mm finishing mill unit respectively symmetrically, and each cooling section is provided with multiple water injection nozzle, described multiple cooling section is connected to water-main respectively by flexible pipe;
Magnetic valve, this magnetic valve is arranged on the inflow entrance place of described water-main, for controlling the hydraulic pressure and the water yield that are supplied to described multiple cooling section;
Flow controlling unit, according to the temperature of described H profile steel rolled piece, controls the aperture of described magnetic valve;
Multiple support, the plurality of support is separately positioned on roll change buggy, and supports described multiple cooling section respectively and cool the edge of a wing of described H profile steel,
Described cooling section is formed as strip, can rotate freely on the bracket.
2. hot rolled H-shaped interstand cooling device according to claim 1, is characterized in that, described support is slidably disposed on described roll change buggy, with the distance between the edge of a wing regulating described cooling section and described H profile steel.
3. hot rolled H-shaped interstand cooling device according to claim 1, is characterized in that, arranges four cooling sections and a water-main in each unit correspondence, and described four cooling sections are connected to a described water-main.
4. hot rolled H-shaped interstand cooling device according to claim 3, it is characterized in that, described water-main is connected to water main by flexible pipe, and this water main is connected to water unit.
5. hot rolled H-shaped interstand cooling device according to claim 1, is characterized in that, also comprise thermometal detector, and this thermometal detector is arranged on before and after described mm finishing mill unit, passes through for detecting described H profile steel rolled piece.
6. hot rolled H-shaped interstand cooling device according to claim 5, it is characterized in that, when described thermometal detector detects described H profile steel rolled piece, detection signal is outputted to described flow controlling unit by described thermometal detector, described flow controlling unit, according to described detection signal, controls the opening and closing of described magnetic valve.
7. hot rolled H-shaped interstand cooling device according to claim 3, is characterized in that, also comprise multiple temperature sensor, and this temperature sensor is separately positioned on each passage of H profile steel production line, for detecting the temperature of H profile steel in described each passage.
8. hot rolled H-shaped interstand cooling device according to claim 7, is characterized in that, described flow controlling unit, according to the temperature of each described temperature sensor, controls the aperture of described each magnetic valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210230045.9A CN102755999B (en) | 2012-07-05 | 2012-07-05 | Interstand cooling device for hot-rolled H-shaped steel |
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| CN201210230045.9A CN102755999B (en) | 2012-07-05 | 2012-07-05 | Interstand cooling device for hot-rolled H-shaped steel |
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| CN102755999B true CN102755999B (en) | 2015-06-17 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103056175B (en) * | 2012-12-21 | 2014-12-17 | 山西新泰钢铁有限公司 | Alternative cooling control method of hot rolling H-section steel flange |
| EP3434383A1 (en) * | 2017-07-24 | 2019-01-30 | Primetals Technologies Austria GmbH | Scaffold cooler for cooling a steel strip in a rolling stand |
| WO2019122986A1 (en) * | 2017-12-22 | 2019-06-27 | Arcelormittal | Steel section rolling mill |
| US11534810B2 (en) * | 2019-03-06 | 2022-12-27 | Toshiba Mitsubishi-Electric Industrial Systems Corporation | Cooling-water injection control device and cooling-water injection control method for rolling mill |
| CN112404142A (en) * | 2020-09-20 | 2021-02-26 | 宝钢特钢韶关有限公司 | Cooling control system of manipulator guard plate |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09308907A (en) * | 1996-05-21 | 1997-12-02 | Kawasaki Steel Corp | Method for control-cooling thick steel plate and device therefor |
| JPH10314820A (en) * | 1997-05-21 | 1998-12-02 | Nippon Steel Corp | Method for controlling coiling temperature of wire |
| CN200998739Y (en) * | 2007-01-16 | 2008-01-02 | 上海振栋工程设备成套研究所 | Turbulent flow type controlled cooling device for small dimension reinforcing steel |
| CN101642780A (en) * | 2009-06-05 | 2010-02-10 | 中冶赛迪工程技术股份有限公司 | Intermediate blank cooling system and cooling control technology |
| KR20120064729A (en) * | 2009-11-24 | 2012-06-19 | 수미도모 메탈 인더스트리즈, 리미티드 | Hot-rolled steel sheet manufacturing device, and hot-rolled steel sheet manufacturing method |
| CN202683632U (en) * | 2012-07-05 | 2013-01-23 | 莱芜钢铁集团有限公司 | Inter-rack cooling device of hot rolled H-shaped steel |
-
2012
- 2012-07-05 CN CN201210230045.9A patent/CN102755999B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09308907A (en) * | 1996-05-21 | 1997-12-02 | Kawasaki Steel Corp | Method for control-cooling thick steel plate and device therefor |
| JPH10314820A (en) * | 1997-05-21 | 1998-12-02 | Nippon Steel Corp | Method for controlling coiling temperature of wire |
| CN200998739Y (en) * | 2007-01-16 | 2008-01-02 | 上海振栋工程设备成套研究所 | Turbulent flow type controlled cooling device for small dimension reinforcing steel |
| CN101642780A (en) * | 2009-06-05 | 2010-02-10 | 中冶赛迪工程技术股份有限公司 | Intermediate blank cooling system and cooling control technology |
| KR20120064729A (en) * | 2009-11-24 | 2012-06-19 | 수미도모 메탈 인더스트리즈, 리미티드 | Hot-rolled steel sheet manufacturing device, and hot-rolled steel sheet manufacturing method |
| CN202683632U (en) * | 2012-07-05 | 2013-01-23 | 莱芜钢铁集团有限公司 | Inter-rack cooling device of hot rolled H-shaped steel |
Non-Patent Citations (1)
| Title |
|---|
| 热轧H型钢控制冷却系统自动控制的实现;赵琳等;《自动化技术与应用》;20090525;第28卷(第05期);第8页第一栏第2行至第10页第二栏第35行 * |
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