CN102755999A - 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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- CN102755999A CN102755999A CN2012102300459A CN201210230045A CN102755999A CN 102755999 A CN102755999 A CN 102755999A CN 2012102300459 A CN2012102300459 A CN 2012102300459A CN 201210230045 A CN201210230045 A CN 201210230045A CN 102755999 A CN102755999 A CN 102755999A
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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 cooling device between a kind of hot rolled H-shaped frame, relate in particular to for the temperature with hot rolled H-shaped finishing mill outlet side reduces cooling device between the hot rolled H-shaped frame of cooling off between frame.
Background technology
Cooling control technology is also in the laboratory research stage between the frame in present H type steel production line finish rolling stage, and the control of the temperature in present domestic H shaped steel manufacturing enterprise's finish rolling stage is mainly through treating that the mode of temperature realizes before control breaking down temperature, rolling rhythm and the finish rolling.The problem that causes thus has:
(1) because the deformation characteristics of H shaped steel causes H shaped steel product edge of a wing temperature too high, temperature distributing disproportionation.
(2) the most of distortion of mm finishing mill unit is in the recrystallization zone (> 950 ℃), only several passages in back are in the non-recrystallization district, and deformation of rolled wire mainly concentrates on the recrystallization zone, is unfavorable for the acquisition of shaped steel product superperformance.
(3) H shaped steel is rolling; Pass is set; The process adjustments of the operation of rolling is mainly depressed through adjustment and is realized, in the operation of rolling temperature controlled rolling is realized comparatively difficulty, the narrow range of technology controlling and process; The limitation of rolling mill practice temperature controlled rolling has influenced the distribution that depressing between roughing and the finish rolling distributed and each passage of mm finishing mill unit is depressed, and has finally influenced dimensional accuracy of products and performance.
Big H shaped steel edge of a wing temperature is too high in order to control better, finishing temperature is crossed problems such as height, should reduce final rolling temperature strengthening the temperature control of finish rolling stage to rolled piece.
At present, cooling ubiquity in the belt steel rolling process is studied and cooling is existing at present between H shaped steel frame between frame, mainly adopts the mode of aerosol cooling.
Publication number CN101537432 discloses cooling controller between a kind of frame; Cooling water water flooding regime to finishing mill is controlled; Can control the steel billet temperature of finishing mill outlet side more accurately, and can further reduce the increase and decrease frequency of cooling water inflow and realize control.Cooling controller possesses between frame: default control mechanism; It is to cooling device between the frame of finishing mill; So that the FDT of steel plate (finish rolling outlet side temperature) controls cooling water inflow with the desired corresponding to mode of target temperature; Steel plate be cooled water-cooled but before, utilize steel billet temperature to infer model and infer FDT, infer the cooling water inflow of cooling device between the FDT computer rack and generate default control output based on this; Dynamic controlling organization, the quantity of state that it obtains the steel plate in rolling calculates the change amount of cooling water inflow and generates dynamically control output based on its quantity of state; And cooling instruction generation unit between frame, its by default control output and dynamically control output generate and the output frame between the cooling instruction.
Publication number CN101422786 discloses between a kind of hot rolled H-shaped rolling process mid frame and has controlled cooling means.In the H rolling of sectional iron process, under the situation that does not change former rolling procedure and rhythm, utilize remaining space between tandem rolling unit frame, adopt the aerosol type of cooling efficiently, the part cooling is carried out in the outside, the H shaped steel edge of a wing.Through this The Application of Technology; Reduced the temperature on the H shaped steel leg waist connecting portion and the edge of a wing, reduced the H shaped 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 shaped steel product residual stress significantly reduces; Avoid web cooling wave and reduced the web cracking phenomena, thereby increased substantially the lumber recovery of H shaped steel, improved H shaped steel comprehensive mechanical property.The H shaped steel that this technology is produced satisfies the requirement of country's " hot rolled H-shaped and subdivision T-steel " GB/T11263-2005 standard fully.
Summary of the invention
The present invention proposes in order to solve aforesaid problem, and its purpose is to provide cooling device between a kind of hot rolled H-shaped frame that can carry out reasonable temperature control to the H shaped steel rolled piece in the finish rolling process.
Cooling device between hot rolled H-shaped frame provided by the present invention; Comprise: a plurality of cooling sections; These a plurality of cooling sections are arranged on both sides between the frame of mm finishing mill unit respectively symmetrically, and each cooling section is provided with a plurality of water injection nozzles, and said a plurality of cooling sections are connected in water-main through flexible pipe respectively; Magnetic valve, this magnetic valve is arranged on said water-main accordingly, is used to control the hydraulic pressure and the water yield that supply to said a plurality of cooling sections; Flow controlling unit according to the temperature of said H shaped steel rolled piece, is controlled the aperture of said magnetic valve.
And, also comprising a plurality of supports, these a plurality of supports are separately positioned on the roll change buggy, and support said a plurality of cooling section respectively and the edge of a wing of said H shaped steel is cooled off.
And said cooling section can rotate freely on said support.
And said support is slidably disposed on said roll change buggy, with the distance between the edge of a wing of regulating said cooling section and said H shaped steel.
And, in each unit correspondence four cooling sections and a water-main being set, said four cooling sections are connected in a said water-main.
And said water-main is connected in water main through flexible pipe, and this water main is connected in water supply portion.
And, also comprising the thermometal detector, this thermometal detector is arranged on before and after the said mm finishing mill unit, is used to detect said H shaped steel rolled piece and passes through.
And when said thermometal detector detected said H shaped steel rolled piece, said thermometal detector outputed to said flow controlling unit with detection signal, and said flow controlling unit is controlled the switching of said magnetic valve according to said detection signal.
And, also comprising a plurality of temperature sensors, this temperature sensor is separately positioned on each passage of H type steel production line, is used to detect the temperature of H shaped steel in said each passage.
And said flow controlling unit is controlled the aperture of said each magnetic valve according to the temperature of each said temperature sensor.
According to cooling device between hot rolled H-shaped frame provided by the present invention, can obtain following effect: online overall construction design is reasonable, and is easy to installation and maintenance; Result of use is good; Especially in the finish rolling overall process, to thick, in, smart every time rolling forward and backwardly all can require carry out reasonable temperature control according to the designer, and H shaped steel product residual stress is reduced significantly; Increase substantially the lumber recovery of H shaped steel, can enhance product performance.
Description of drawings
Fig. 1 is the sketch map of H shaped steel finish rolling process of the present invention.
Fig. 2 is the sketch map of control cooling device of the present invention.
Fig. 3 is that control cooling device of the present invention is installed in the state diagram between H shaped steel frame.
Fig. 4 is a cooling section rotary manipulation sketch map of the present invention, wherein, and (a) expression cooling section duty, (b) state behind the expression dismounting top roll, (c) state of expression rotation cooling section, (d) state behind the expression dismounting lower roll.
Fig. 5 is a support slip fixed mechanism sketch map of the present invention, and wherein, (a) the expression support is fixed on the state diagram of roll change buggy, (b) structure chart of expression frame bottom, (c) structure chart of expression roll change buggy upper bracket fixed part.
Fig. 6 is that the present invention carries out control Cooling Control flow chart between H shaped steel frame.
Symbol description
1 is universal roughing mill (UR), and 2 is edging mill (E), and 3 is omnipotent finishing mill (UF), and 4 is H shaped steel rolled piece, and 5 is roll change buggy; 6 is cooling section, and 7 is flexible pipe, and 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, and 14 is stator, and 15 is through hole; 16 is fixed head, and 17 is sliding tray, and 18 is flow controlling unit, and 19 is thermometal detector (HMD).
The specific embodiment
Below, the embodiment that present invention will be described in detail with reference to the accompanying.
Fig. 1 is the sketch map of H shaped steel finish rolling process of the present invention.As shown in Figure 1; H shaped steel finishing mill of the present invention comprises universal roughing mill 1, edging mill 2, omnipotent finishing mill 3 and roll change buggy 5; H shaped steel finish rolling process of the present invention is mainly passed through roughing, edging, this three phases of finish rolling, accomplishes through above-mentioned universal roughing mill 1, edging mill 2, omnipotent finishing mill 3 respectively.Each milling train has frame, in frame, is provided with rolling relatively roll, feed inlet and outlet, the feed inlet and outlet place of roll is equipped with the guide and guard frame in frame.
Fig. 2 is the sketch map of control cooling device of the present invention.As shown in Figure 2; Control cooling device of the present invention is provided with 4 groups of cooling sections 6 respectively at each milling train; These 4 groups of cooling sections 6 are separately positioned on milling train, be roll all around, each cooling section 6 of each milling train is connected in water-main 12 through flexible pipe 7, utilizes a battery valve 9 to control; And each cooling section 6 is provided with a plurality of water injection nozzles 11, and cooling section 6 is connected in roll change buggy 5 through support 10.Here, cooling section 6 forms elongate in shape, and common and rolled piece laterally arranges, and can be provided with six water injection nozzles 11 on each cooling section 6.But the quantity of water injection nozzle 11 is not limited thereto, and according to the cooling needs, is provided with more or less.
Be provided with a water-main 12 on each milling train accordingly, water-main 12 is connected in water main 8 through flexible pipe 13, therefore can make things convenient for roller replacing operation.Here, water main 8 is connected in water supply portion.
It is as shown in Figure 3 that the control cooling device of Fig. 2 is installed in the state of H shaped steel finishing mill; Cooling section 6 is arranged on the both sides all around of roll under the state of support 10 supports; Be arranged on water injection nozzle 11 on the cooling section 6 towards rolled piece; And cooling section 6 laterally arranges with respect to rolled piece, to cooling off through the outside, the edge of a wing of the H shaped steel after every time rolling.
In the present invention, cooling section 6 is set on frame, can rotate freely, thereby avoids hindering the operation of dismounting roller, makes things convenient for roller replacing operation.
Fig. 4 is a cooling section rotary manipulation sketch map, wherein, and (a) expression cooling section duty, (b) state behind the expression dismounting top roll, (c) state of expression rotation cooling section, (d) state behind the expression dismounting lower roll.Like Fig. 4 (c) with (d),, can avoid cooling section 6 to hinder the disassembling section of lower roll through the rotation cooling section.
Fig. 5 is a support slip fixed mechanism sketch map of the present invention, and wherein, (a) the expression support is fixed on the state diagram of roll change buggy, (b) structure chart of expression frame bottom, (c) structure chart of expression roll change buggy upper bracket fixed part.
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.
Shown in Fig. 5 (c); Roll change buggy 5 is provided with the fixed head 16 that is used for fixing support; 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 forms perforation fixed head 16.
Shown in Fig. 5 (a), when being fixed on support 10 on the roll change buggy, connect through hole 15 and sliding tray 17, and use the nut set bolt, thereby support 10 is fixed on the roll change buggy at the other end of bolt with bolt.And, through unclamping nut, support 10 is moved at the length direction of sliding tray 17, can regulate the distance between the cooling section and the H shaped steel edge of a wing thus, cool off applicable to product different size.
Except aforesaid way, the present invention can also adopt other modes to realize the fixing and slip of support on roll change buggy, for example adopts common guide rail connection etc.
Fig. 6 is that the present invention carries out control Cooling Control flow chart between H shaped steel frame.
Cooling device also comprises temperature control part between hot rolled H-shaped frame of the present invention; This temperature control part comprises flow controlling unit 18, thermometal detector 19 and magnetic valve 9, and thermometal detector 18 is connected in flow controlling unit 18 with magnetic valve 9 through distribution.At this, flow controlling unit 18 can be the computer equipment with CPU, memory etc.
For the rolled piece temperature is controlled more accurately, the present invention is provided with thermometal detector (HMD) 19 respectively in the front and back of mm finishing mill unit, and rolled piece is followed the tracks of, and the testing result of two HMD is input to flow controlling unit 18 respectively.When H shaped steel rolled piece 4 got into mm finishing mill unit, the HMD of mm finishing mill unit front detected rolled piece, and testing result is outputed to flow controlling unit 18, and flow controlling unit 18 is opened magnetic valve 9 based on the testing result of HMD.Three magnetic valves 9 are sprayed water, and the rolled piece in the finish rolling process is cooled off.After the finish rolling, when the HMD of mm finishing mill unit back detected rolled piece, its testing result outputed to flow controlling unit 18, and flow controlling unit 18 is closed magnetic valve 9 based on the testing result of HMD and stopped water spray, accomplished thus between the frame in finish rolling stage and cooled off.
In addition; The present invention can also be provided with temperature sensor at every time of production line, is used to detect the temperature of H shaped steel rolled piece 4 in each passage, then the aperture through flow controlling unit 18 control magnetic valves 9; Control supplies to the water yield and the hydraulic pressure of cooling section 6 thus, reaches desired cooling effect.Here, the control of 18 pairs of three magnetic valves 9 of flow controlling unit can be independent of each other, can carry out reasonable temperature control according to the temperature of H shaped steel rolled piece 4 in every time.
Cooling device between hot rolled H-shaped frame of the present invention according to the rolling characteristics of H shaped steel and the Temperature Distribution in the operation of rolling, only cools off the outside, the edge of a wing of H shaped steel.
Though the present invention is provided with four groups of cooling sections with each milling train all around be that example is illustrated, the present invention is not limited thereto, and can be provided with two, six etc., and bilateral symmetry ground is arranged between rolling-mill housing.
Between hot rolled H-shaped frame of the present invention cooling device compared with prior art, online overall construction design is reasonable, and is easy to installation and maintenance; Result of use is good; Especially in the finish rolling overall process, to thick, in, smart every time rolling forward and backwardly all can require carry out reasonable temperature control according to the designer, and H shaped steel product residual stress is reduced significantly; Increase substantially the lumber recovery of H shaped steel, can enhance product performance.
Claims (10)
1. cooling device between a hot rolled H-shaped frame is characterized in that, comprises:
A plurality of cooling sections, these a plurality of cooling sections are arranged on both sides between the frame of mm finishing mill unit respectively symmetrically, and each cooling section is provided with a plurality of water injection nozzles, and said a plurality of cooling sections are connected in water-main through flexible pipe respectively;
Magnetic valve, this magnetic valve is arranged on said water-main accordingly, is used to control the hydraulic pressure and the water yield that supply to said a plurality of cooling sections;
Flow controlling unit according to the temperature of said H shaped steel rolled piece, is controlled the aperture of said magnetic valve.
2. cooling device between hot rolled H-shaped frame according to claim 1 is characterized in that, also comprises a plurality of supports, and these a plurality of supports are separately positioned on the roll change buggy, and supports said a plurality of cooling section respectively and the edge of a wing of said H shaped steel is cooled off.
3. cooling device between hot rolled H-shaped frame according to claim 2 is characterized in that said cooling section forms strip, on said support, can rotate freely.
4. cooling device between hot rolled H-shaped frame according to claim 3 is characterized in that said support is slidably disposed on said roll change buggy, with the distance between the edge of a wing of regulating said cooling section and said H shaped steel.
5. cooling device between hot rolled H-shaped frame according to claim 1 is characterized in that, in each unit correspondence four cooling sections and a water-main is set, and said four cooling sections are connected in a said water-main.
6. cooling device between hot rolled H-shaped frame according to claim 5 is characterized in that said water-main is connected in water main through flexible pipe, and this water main is connected in water supply portion.
7. cooling device between hot rolled H-shaped frame according to claim 1 is characterized in that, also comprises the thermometal detector, and this thermometal detector is arranged on before and after the said mm finishing mill unit, is used to detect said H shaped steel rolled piece and passes through.
8. cooling device between hot rolled H-shaped frame according to claim 7; It is characterized in that; When said thermometal detector detects said H shaped steel rolled piece; Said thermometal detector outputs to said flow controlling unit with detection signal, and said flow controlling unit is controlled the switching of said magnetic valve according to said detection signal.
9. cooling device between hot rolled H-shaped frame according to claim 5 is characterized in that, also comprises a plurality of temperature sensors, and this temperature sensor is separately positioned on each passage of H type steel production line, is used to detect the temperature of H shaped steel in said each passage.
10. cooling device between hot rolled H-shaped frame according to claim 9 is characterized in that, said flow controlling unit is controlled the aperture of said each magnetic valve according to the temperature of each said temperature sensor.
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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 CN102755999B (en) | 2015-06-17 |
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Cited By (5)
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| CN103056175A (en) * | 2012-12-21 | 2013-04-24 | 山西新泰钢铁有限公司 | Alternative cooling control method of hot rolling H-section steel flange |
| WO2019123320A1 (en) | 2017-12-22 | 2019-06-27 | Arcelormittal | Steel section rolling mill |
| CN110891702A (en) * | 2017-07-24 | 2020-03-17 | 首要金属科技奥地利有限责任公司 | Roller frame with frame cooler for cooling steel strip |
| CN111936245A (en) * | 2019-03-06 | 2020-11-13 | 东芝三菱电机产业系统株式会社 | 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 |
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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 |
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| CN110891702A (en) * | 2017-07-24 | 2020-03-17 | 首要金属科技奥地利有限责任公司 | Roller frame with frame cooler for cooling steel strip |
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| WO2019123320A1 (en) | 2017-12-22 | 2019-06-27 | Arcelormittal | Steel section rolling mill |
| US11724295B2 (en) | 2017-12-22 | 2023-08-15 | Arcelormittal | Steel section rolling mill |
| CN111936245A (en) * | 2019-03-06 | 2020-11-13 | 东芝三菱电机产业系统株式会社 | Cooling water injection control device and cooling water injection control method for rolling mill |
| CN111936245B (en) * | 2019-03-06 | 2022-08-05 | 东芝三菱电机产业系统株式会社 | 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 |
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