CN103249506A - Rolling mill for producing steel for tubes and thin strip - Google Patents
Rolling mill for producing steel for tubes and thin strip Download PDFInfo
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- CN103249506A CN103249506A CN201180060650XA CN201180060650A CN103249506A CN 103249506 A CN103249506 A CN 103249506A CN 201180060650X A CN201180060650X A CN 201180060650XA CN 201180060650 A CN201180060650 A CN 201180060650A CN 103249506 A CN103249506 A CN 103249506A
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- 238000005096 rolling process Methods 0.000 title claims abstract description 113
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 16
- 239000010959 steel Substances 0.000 title claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 230000006698 induction Effects 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000009826 distribution Methods 0.000 claims description 5
- 230000001915 proofreading effect Effects 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000002513 implantation Methods 0.000 claims 1
- 238000005098 hot rolling Methods 0.000 description 25
- 238000001953 recrystallisation Methods 0.000 description 16
- 229910001566 austenite Inorganic materials 0.000 description 10
- 238000005266 casting Methods 0.000 description 8
- 229910000859 α-Fe Inorganic materials 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 235000012771 pancakes Nutrition 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 230000000930 thermomechanical effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004484 Briquette Substances 0.000 description 1
- 229910000742 Microalloyed steel Inorganic materials 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910001563 bainite Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 238000003379 elimination reaction Methods 0.000 description 1
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- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/004—Heating the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
- B21B45/06—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing of strip material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
- B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Control Of Metal Rolling (AREA)
Abstract
The invention relates to a rolling mill for producing metal strips, preferably steel for tubes and/or thin strip, in which the temperature control can be influenced between the finishing stands Fi and Fi+1 using a rapid heating device (induction heater), characterized in that the distance between the stands Fi and Fi+1, between which a rapid heating device is arranged, is 5 to 25 m, and in addition to an induction heater, a roller flattening unit (for example, roller leveller 14) and/or shears 8 and/or a driving roller pair 12 and/or a descaling sprayer 15 are arranged as additional units between the two stands. The roll stand Fi and/or regions in front of the roll stand Fi further comprise actuators for influencing the strip warping and/or strip turn-up/ -down (ski) at the strip head.
Description
Technical field
The present invention relates to a kind ofly for the manufacture of band, especially manage the rolling unit (Walzstra e) of steel and/or strip, CSP equipment especially, it comprises for the manufacture of the casting device of sheet billet (Duennbramme) and the rolling unit that is used for sheet billet is rolled into band or strip.
Background technology
Proved absolutely in the prior art by hot rolling system and made steel band or steel plate.For example at P. Uranga, the article " Improvement of Microstructural Homogeneity in Themomechanical Processed Nb Steels by Thin Slab Casting " (43 of A. I. etc.
RdMechanical Working and Steel Processing Conference, 15 Charlotte, ISS, the 39th volume, the 511st to 529 page) in; Article " Processing of Niobium Microalloyed API Grade Steel on a Thin Slab Plant " (Materials Science Forum at C. Klinkenberg etc., 2005 the 500th to 501 volumes, the 253rd to 260 page) in; And at the article " Process modeling of microalloyed steel near net shane casting " (Proc. Of the Int. Conf. On Thermomechanical Processing) of S. V. Subramanian etc.; Find corresponding disclosure in " Mechanics, Microstructure " (The University of Sheffield, Sheffield, 2003, the 148 to 156 pages) of being write by E. J. Palmiere etc.
CSP (production of close-coupled band) equipment is such casting rolling equipment, therein two operations for the manufacture of steel band of working are discretely closely interconnected, namely in Casting Equipment, the steel of liquid state is cast as sheet billet and in rolling equipment sheet billet is rolled into steel band.At this, directly taking full advantage of under the situation of foundryman's fever or passing through by means of the heater between Casting Equipment and rolling unit or the desired rolling temperature of balance stove adjusting usually, the blank (Strang) of cast is rolling before realizing.
Traditional rolling unit of heavy slab equipment has at least one pony roughing mill or slab frame (Grobblechger ü st) and with the mm finishing mill unit (Fertigstrasse) of some pitch arrangement after this pony roughing mill or slab frame.Usually reversibly in pony roughing mill or slab frame, sheet billet is rolled into the thickness determined before having in the middle of band (Zwischenband), and realize in mm finishing mill unit that in series operation this is rolling, is configured to the continuous rolling unit to this mm finishing mill unit.Spacing between each frame of such mm finishing mill unit is usually constant and be typically about 5.5m, and the spacing between first frame of pony roughing mill or slab frame and mm finishing mill unit exceeds many times usually, in order to can guarantee the reversible rolling operation in pony roughing mill or slab frame.Thus, approximately 50m or bigger spacing are much between pony roughing mill or slab frame and mm finishing mill unit.
Because the layout of the common alignment of heavy slab-discharge roller-way (Austragerollgang), pony roughing mill or slab frame and the mm finishing mill unit of slab stove, traditional rolling unit has big length and the stronger frame of required power, cost of investment height thus.Rolling unit traditional aspect energy is not as CSP equipment.Especially when making strip, the input temp in mm finishing mill unit is very low here, and this makes the rolling difficulty of strip.Because the output that tubular plate (R hrenblech) also expends time in and reduced traditional hot rolling band unit is very much made in the control of necessary temperature in traditional hot rolling band unit.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind of rolling unit that starts illustrated type, can reduce top illustrated shortcoming at least by means of it.In meaning according to the present invention, this purpose utilization comprises that the rolling unit of the described feature of claim 1 realizes.Define favourable design form of the present invention in the dependent claims.
According to rolling unit of the present invention, especially CSP equipment is preferably become by the roll mill fabric of for the manufacture of metal tape, particularly managing the compactness of steel and/or strip, therein two each other in succession finishing stand Fi and Fi+1 between can be by means of nonstorage calorifier, especially eddy-current heating portion (Induktionsheizung) influences temperature.At this, except nonstorage calorifier, between frame Fi and Fi+1, can be furnished with correcting unit (Richtaggregat), preferably gaugger (Rollenrichtmaschine) and/or cutter (Schere) and/or mill scale washer (Zunderwaescher) or other band cooling device alternatively.All the device be placed to compactly make its be fitted to 5 and 25m between the frame spacing in.In addition, frame Fi was provided preferably with before nonstorage calorifier for influence at the band arching (Bandwoelbung) at band head place and/or the adjustment element of slippage (Ski).
With correcting unit, preferably gaugger and/or cutter and top illustrated adjustment element, thus can be in limited structure space guarantee to pass through reliably nonstorage calorifier, eddy-current heating portion especially with the minimum size of passing through on thickness direction.Limited by method, nonstorage calorifier, cutter and/or mill scale washer can have or not with the roller-way of insulation part (Waermedaemmung) or workbench according to treating that rolling product uses or laterally being rolled away from from roll line or alternatively be furnished with there.Also cutter can be arranged between the frame for strip is rolling, so that straight as far as possible head and the afterbody in band place of using and being responsible for being out of shape at head and/or at the afterbody place.
Because the additional device between frame, for example 〉=the normal frame spacing of 5.5m increases.Form in order to get rid of possible additional secondary mill scale, preferably be provided with the mill scale washer of single file, it implements and preferably is arranged in frame Fi+1 compactly before after nonstorage calorifier.When having the band of higher surface requirements (for example in strip is rolling), can activate the mill scale washer before frame Fi+1 rolling.When making pipe, activation mill scale washer can be disengaged alternatively and activate or roll away from from roll line.
In order to save structure space, can cancel looper device (Looper) alternatively, replace it to be provided with and have or minimum tension adjusting portion that belt tension is measured roller (Zugmessrolle).
Compare with traditional having at the rolling unit of the eddy-current heating portion between roughing and the mm finishing mill unit, rolling unit by having corresponding extra cell, preferably CSP equipment rolling unit according to application of the present invention, significantly reduced the structure space of rolling unit generally.Within mm finishing mill unit application choice ground can sail into extra cell in the roll line generally speaking can be not only method instruct aspect and also advantageously support the operation of rolling aspect the tissue adjustment (Gefuegeseinstellung) in rolled products.In meaning according to the present invention, these extra cells seldom need structure space and are arranged between two finishing stands (its spacing is 5-25m).In other words, more much smaller than rolling there middle strip length at the space requirement that has between two frames of extra cell.
Preferably the sheet billet that produces in the casting device of CSP equipment preferably has≤thickness of 120mm.A kind of CSP equipment is provided thus, and it is in that under the situation of not using reversible pony roughing mill and preferably only to use a large amount of finishing stands can make reliably under as the situation of rolling unit desired from the tubular product scope of taking sheet billet to.
As example and preferred form of implementation, method and the manufacturing of tubular band in CSP equipment can be described.TM method (thermomechanical method) in CSP equipment generally includes austenitic original structure one or many in the temperature range of recrystallization and is out of shape to produce the step of organizing one or many to be out of shape to produce the austenite structure (so-called pancake tissue (Pan-Cake-Gefuege)) of that extend in level land as far as possible, (versetzungsreich) of dislocation abundance, the non-recrystallization step of uniform, thin recrystallization austenite structure and ensuing recrystallization, austenitic.These steps are also referred to as austenitic modulation.
At last, in another step, realize by means of the cooling of the austenite structure of first step modulation to produce sappy structure in the hot rolling band finished when the phase transformation or the hot rolled plate.Organizing so by ferrite, pearlite, bainite and martensitic constituting of the hot rolling band of finishing or hot rolled plate, wherein, the content of these four kinds of structural constituents is corresponding can be between 0% and 100%.
According to the above stated specification of TM method, also can cancel aforementioned step of in austenitic non-recrystallization temperature scope, being out of shape.In this case, austenitic modulation is carried out in austenitic recrystallization temperature scope fully.
Yet the difficulty of hot mechanical hot rolling system is, in the scope of recrystallization, produce equably, the austenite crystal of recrystallization carefully, must apply big as far as possible distortion.Carefully the tissue signature of recrystallization is, not only previous, inhomogeneous cast sturcture but also each coarse grain or tissue regions be converted to fully have around the little distribution (Streuung) of average grain size uniformly, the tissue of recrystallization carefully.These conditions usually not by or the austenite structure that not exclusively is satisfied and causes modulating deficiently.
If in the temperature range of austenitic recrystallization, be right after the step in the temperature range of austenitic non-recrystallization after the step of hot rolling system, then when the large percentage of the thickness of the hot rolling band of finishing or hot rolled plate and slab or the middle thickness of being with, usually only seldom be preserved for the residual deformation of the ensuing distortion in hot mechanical treatment.Even it also is not enough to remaining and each coarse grain that may also exist of cast structure or tissue regions are changed into uniform, the flat pancake tissue that the austenite crystal by non-recrystallization constitutes often when each frame is turn-offed.Also there is the austenite of modulation deficiently in this case.
But in the hot rolling band of finishing or hot rolled plate, Tiao Zhi austenite causes at each the bigger crystal grain outside the normal distribution of average grain size in disadvantageous mode and/or to cause its minor structure be the tissue regions of feature with low-angle crystallization boundary (Kleinwinkelkorngrenze) deficiently.But, such tissue regions cause the band finished or plate worse mechanical performance, especially cause toughness to reduce.
Corresponding to the explanation that provides before the TM method, the distortion in austenitic recrystallization zone has decisive significance for the performance of the steel band of finishing or steel plate.Though a degree of deformation part that needs in the first step of hot mechanical treatment can replace by the temperature that enters that improves, this possibility is subjected to maximum furnace temperature and is subjected to the cooling when rolling contact and is subjected to limit in the heat radiation between the frame (when a plurality of frames participate in this step).
A kind of CSP equipment is preferred, therein between at least two frame Fi and Fi+1 of rolling unit, especially be furnished with heater between the first frame F1 and the second frame F2.When needed, this heater also can be designed to and can roll away from from rolling unit and can sail into wherein again.Particularly preferably, enforcement is a kind of especially has one to the induction heating apparatus of four inductor components.Generally speaking, pursue the form of compact structure as far as possible that has high power density for such heater.Actual be introduced in the band or in band sensed power density place measure, this power density preferably is in the scope of special every square metre of 1500 megawatts, preferably special every square metre of about 4000 megawatts at least.At this, such structural detail is called as inductor component, by it power is introduced in the band.Therefore one or more inductor components can form eddy-current heating portion.
At equipment side, rolling equipment preferably is used as the continuous rolling unit, within it, when high temperature and utilize in case of necessity the support of the heater between finishing stand be used in above illustrated deforming step and rolling when in optional cooling, being applied in low temperature in an embodiment.At this, do not use pony roughing mill or slab frame (as common in the heavy slab equipment).
Preferably, deforming step connects mutually, that is to say, the frame of all participations engages after sheet billet or middle band enter simultaneously.At this, rolling machine frame is travelled, therefore the method for operation of passing all rolling machine frames simultaneously with sheet billet or middle band in series operation.But at this, deformation operation also can be sailed out and correspondingly do not participated in to each frame.
In the method for using in service for no reason, Zhu Zao blank needn't be divided into slab by cross member therein, but continuously, preferably by car tunnel furnace be fed to hot-rolling mill and to this hot rolling band by finish rolling, cooling and before reeling just by transverse cuts and rolled-up rolling next.This method of operation has reduced waste product output, because do not produce head and the tail end of band.Additionally, also can make thinner tape thickness, preferably have＜1 millimeter thickness, be restricted to operation beginning (Anfahren) because when thinner band enters in the last frame of hot-rolling mill, raise the risk of (Hochgehen) (curving (Cobbles)).In rolling for no reason, first initiatively the speed of drawing in of frame be reduced on the casting speed, this can cause the temperature loss that improves before hot rolling system and/or during it.Therefore, for the higher rolling temperature of rolling needs and the therefore heating of band, with avoid ferrite mutually in and/or rolling final temperature (Walzendtemperatur) in two phase regions (austenite adds ferrite).
Such method and the device of setting forth also allow to make austenite-phase region of having minimizing in principle, for example have＞steel grade of 1.0% silicone content.Need higher rolling temperature at this so for rolling, to avoid reliably at ferrite mutually and/or the rolling final temperature in the two-phase section (austenite adds ferrite).Can easily make such steel quality at CSP equipment according to the present invention.
When making band or strip, as top illustrated, eddy-current heating portion advantageously installs between the fore frame or sails at least in the zone between the fore frame.Preferably, between first and second and/or the second and the 3rd frame of mm finishing mill unit, insert eddy-current heating portion.
Yet eddy-current heating portion is characterised in that and smallerly on thickness direction passes through size (Durchgangsmass) and be responsive member.In mm finishing mill unit, special so-called slippage or other band arching or the injustice of usually occurring at the head place especially when rolling in first frame, it hinders tubular band or strip to pass through eddy-current heating portion or other unit (cutter, mill scale washer) between two finishing stands reliably.In addition, above mentioned sliding phenomenon up or down can seriously hinder the middle band of roughing system to penetrate in the ensuing frame.In worst situation, middle band damages the unit between two finishing stands.
For example can realize minimizing or eliminating of slippage by means of suitable hold-down roller (Niederhalterrolle) or by means of detorsion driver (Biegerichttreiber).Yet, if within equipment according to the present invention, cut away the middle band head of roughing system by means of suitable shear, be extremely preferred.Alternatively, when will be at the thin finish rolling band of manufacturing in service in batches, utilize such cutter also can head and afterbody place prune roughing system in the middle of band.
In another the preferred form of implementation according to equipment of the present invention, according to rolling carrying material can be after centre band heating on the rolling direction, band is by heater after, be furnished with debris removal portion (Entzunderung) in case of necessity and to be furnished with the live-roller of postposition before the centre band enters in one or more other finishing stands right.Guarantee thus, but finish rolling system almost free of contamination strip or tubular band, and mill scale does not damage band or strip surface.
Pass through device between two finishing stands reliably in order to ensure the centre band, possible adjustment element row preferably be set according to the present invention, its can be individually or any combination ground use:
As at rolling machine frame from the measure that is in, give chapter and verse and for example enter that thickness, thickness reduce, the material of top working roll and bottom working roll or temperature and different-diameter install at topping roll and bottom roll place and twoly drive (Twin-Drive) and differently adjust roll rotational speed.
For the Temperature Distribution of influence of rolled product on thickness direction, can be embodied as in the adjustment of slab or band cooling before the rolling machine frame Fi and to make the Temperature Distribution of symmetry on the thickness be created in rolled piece as far as possible or to influence slippage by adjustment (Temperaturvertrimmung) targetedly thus.Alternatively, also may before having the frame of heater, carry out regulating at the board briquette at upside and downside place for this purpose.
Be arranged in execution work platform Height Adjustment before the finishing stand Fi in addition, thereby guarantee the in-position of slab or the band restriction in the roll gap (for example, rolled piece center=roll gap center).
Equally, the installation of correcting unit can utilize device simple especially and that can grasp to prevent not straight taking away to (slippage, arching, bending).Except gaugger, with the form of correcting unit be used for revise or avoid this device of slippage or band arching also can be hold-down roller, pressure strip, compression bar (Niederhalterstrebe), detorsion driver, band head-rectification passage (Richtkanal) or be with head-pressurizing unit.
As top mentioned, can from rolled piece, excise slippage by means of cutter.
At last, preferably especially before entering heater, can survey the appearance of the unevenness in the band of centre by means of suitable surface-pitch sensors.Right sensors is known machinery, optics or other sensor for the professional.According to the alarm signal of the control part that is connected with sensor, can introduce suitable be used for eliminating or reduce to detect not straight take away to measure or make again in the middle of band or slab return.
In addition, not only can protect heater to avoid the infringement of band bending in top illustrated mode; And can by use suitable air-blast device (its equally particularly advantageously be arranged in according between the rolling machine frame of mm finishing mill unit of the present invention or can sail in this place) avoid especially by being retained in the damage of the caused eddy-current heating of the cooling water portion on band or the strip.
Above mentioned extra cell preferably can be used to different application examples in the CSP mm finishing mill unit with the measure that is used for overcoming slippage.Yet also can consider or be arranged to be applied between the finishing stand of traditional rolling unit.
Eddy-current heating portion and extra cell can be fixedly arranged or laterally be moved into or shift out roll line.As to the substituting of the unit that shifts out, there heat shield can be set.
Description of drawings
Next elaborate the present invention with reference to some accompanying drawings (showing a plurality of embodiment according to CSP equipment of the present invention therein).Wherein:
Fig. 1 has shown the first embodiment of the present invention, between two frames of schematically illustrated hot rolling band unit, be furnished with eddy-current heating portion therein and live-roller right,
Fig. 2 has shown the second embodiment of the present invention, and it has being used for before rolling direction is arranged in heater and revises/avoid device in the slippage at band head place, centre,
Fig. 3 has shown the 3rd embodiment according to hot-rolling mill of the present invention, it has and is arranged in be used to revising/avoid at the device of the slippage at band head place, centre and the heater between the mill scale washer after it, they all are arranged between two rolling machine frames of hot-rolling mill
Fig. 4 has shown the 4th embodiment according to hot-rolling mill of the present invention, its cutter, Fast Heating portion, live-roller that has an arranged in succession on rolling direction to and scaper, and
Fig. 5 has shown the 5th embodiment according to hot-rolling mill of the present invention.
The specific embodiment
Fig. 1 has shown the part of the hot-rolling mill 2 in first form of implementation according to the present invention, and metal tape 1 stretches by shown first rolling machine frame that is designated as Fi and shown second rolling machine frame that is designated as Fi+1 therein.The spacing between frame Fi and the Fi+1 corresponding 5 and 25m between.Band 1 directly enter in the eddy-current heating portion 8 after from finishing stand Fi, come out and next enter live-roller to 12 in.Can be applied on the band 1 with belt tension (also before the band head arrives in subsequently the frame) to 12 and the water that is retained in addition on the band 1 is pushed gently by this live-roller.Between frame Fi and Fi+1, can be configured with the minimum tension adjusting portion.At this, live-roller is adjusted at the accurate setting speed (Setzgeschwindigkeit) at frame Fi+1 place to 12 helps.Alternatively, between frame, be furnished with tonometry roller or looper device (not shown), with the stream (Massenfluss) of ensuring the quality of products.At last, use example for one, after rolling machine frame Fi+1, be furnished with cooling section 11 on the rolling direction W, utilize its will in heater 8, be heated on the temperature on the recrystallization temperature before the band 1 of application example of heating be cooled in the temperature range in the scope of non-recrystallization.These two devices 8 and 12 also can be arranged conversely.Also can consider live-roller is arranged in heater 18 before with afterwards to 12.
Fig. 2 has shown another form of implementation according to hot-rolling mill 2 of the present invention, and wherein finishing stand Fi and finishing stand Fi+1 only are shown.Between rolling machine frame Fi, Fi+1, be furnished with again for the heater 8 by means of eddy-current heating Fast Heating metal tape 1.Between finishing stand Fi and heater 8, be furnished be used to the device 14 of proofreading and correct/avoiding in the slippage at the middle band place of leaving finishing stand Fi on the rolling direction W.The device 14 for proofreading and correct/avoid slippage up or down so for example can be detorsion driver or hold-down roller.Such device 14 should be revised in the phenomenon of for example lifting with head after rolling machine frame comes out (upwards so-called slippage), that is to say, with its elimination or be reduced at least and be considered to acceptable minimum of a value.This is mainly used in being avoided penetrating the downtime that causes among rearmounted unit (for example nonstorage calorifier 8), other unit (cutter, mill scale washer) or any other rolling machine frame Fi+1 because the centre is with head inaccuracy ground or is got nowhere.For fear of sliding phenomenon, hot-rolling mill 2 has according to the present invention and at least one rolling machine frame, the first rolling machine frame Fi driver to the working roll Fib of the working roll Fia on top and bottom that separate and that do not interconnect preferably.Thus, when controlling driver suitably, in rolling, can slippage or also have downward sliding phenomenon to be restricted to minimum of a value will be made progress.
Fig. 3 has shown the 3rd form of implementation according to hot-rolling mill 2 of the present invention, between the first rolling machine frame Fi that illustrates and the second rolling machine frame Fi+1 that illustrates, be furnished with for the device of revising in the slippage at band head place, centre 14 therein, followed nonstorage calorifier 8.Between nonstorage calorifier 8 and rolling machine frame Fi+1, be furnished with mill scale washer 15 again, can before band 1 enters among the rolling machine frame Fi+1, remove the lip-deep mill scale that sticks to band 1 reliably again via it.Alternatively, this form of implementation of the present invention have in addition (unshowned) live-roller to and/or (unshowned) cooling end.
Fig. 4 has shown the 4th form of implementation according to hot-rolling mill 2 of the present invention, is furnished with cutter 13, nonstorage calorifier 8, live-roller to 12 and mill scale washer 15 at the rolling direction W of band 1 therein between the first rolling machine frame Fi that illustrates and the second rolling machine frame Fi+1 that illustrates.Nonstorage calorifier 8, live-roller to 12 and mill scale washer 15 to work with mode identical in the form of implementation according to Fig. 2 to 4, and cutter 13 is mainly used in cutting band head and band afterbody in case of necessity, rolling tongue (Walzzunge) or bending (so-called slippage) can occur at its place.Therefore, cutter 13 substitutes (unshowned at this) shown in the aforementioned form of implementation on the one hand and is used for proofreading and correct/avoiding the device of slippage, in addition cutter 13 by cut tongue (its in the ensuing operation of rolling can to band 1 advance and the working roll of ensuing frame has adverse effect) advantageously support the other operation of rolling.
In Fig. 5, shown the 5th form of implementation according to hot-rolling mill 2 of the present invention, be furnished with finishing stand Fi at the rolling direction W of band 1 therein, be used for proofreading and correct/avoiding device 14, cutter 13 and the Fast Heating portion 8 of upwards slippage.After coming out from Fast Heating portion, metal tape 1 enters live-roller in 12, pushes the residual water that is positioned on the band 1 by it.Leave live-roller to 12 after, metal tape 1 enters in the mill scale washer 15, removes formed remaining mill scale on the surface of band 1 therein before band 1 enters among the finishing stand Fi+1 reliably.At last, according to applicable cases, before can in cooling end 11, cooling off again in nonstorage calorifier 8 heated hot rolling band 1 and it is rolled down on the finish rolling tape thickness.
Alternatively, nonstorage calorifier 8 and cutter 13 are observed at the band direct of travel and also can be arranged conversely.
If should further reduce the frame spacing, then nonstorage calorifier 8 is being with the direct of travel observation can be arranged in identical place, place and alternatively laterally is being moved in the roll line with mill scale washer 15, thereby can use mill scale washer 15 or nonstorage calorifier 8.
Claims (17)
1. one kind for the manufacture of metal tape, preferably manage the rolling unit of steel and/or strip, therein at two in succession finishing stand (Fi each other, Fi+1) be furnished with nonstorage calorifier (8) between, it is characterized in that, described nonstorage calorifier (8) is arranged in the described frame (Fi between it, Fi+1) spacing is 5-25m, and except described nonstorage calorifier (8), (Fi is furnished with another extra cell at least between Fi+1) in described frame, especially correcting unit, preferably gaugger (14) and/or cutter (13) and/or live-roller are to (12) and/or mill scale washer (15).
2. rolling unit according to claim 1, it is characterized in that, be prepended to described nonstorage calorifier (8) rolling machine frame (Fi) and/or this rolling machine frame (Fi) before and zone afterwards be equipped with for the adjustment element of influence in band arching and/or the band slippage at band head place.
3. according to each described rolling unit in the above claim, it is characterized in that (Fi Fi+1) is the finishing stand of preferably compact continuous rolling unit to described rolling machine frame.
4. according to each described rolling unit in the above claim, it is characterized in that, preferably relate to the rolling unit in CSP equipment, its manufacturing has≤sheet billet of the thickness of 120mm.
5. according to each described rolling unit in the above claim, it is characterized in that, heater, the induction heating apparatus that especially preferably has 1 to 4 inductor component are arranged in first and second frame (F1, F2) between and/or the second and the 3rd frame (F2, F3) between or can sail between them.
6. according to each described rolling unit in the above claim, it is characterized in that at least one live-roller is to being arranged between frame (Fi) and the frame subsequently (Fi+1) or can sailing between them.
7. according to each described rolling unit in the above claim, it is characterized in that, be used for to proofread and correct or avoid device in the slippage at middle band place be arranged between frame (Fi) and the frame subsequently (Fi+1), preferably before described heater or can sail between them.
8. rolling unit according to claim 7 is characterized in that, being used for proofreading and correct or avoiding the described device of slippage is hold-down roller, pressure strip, compression bar, detorsion driver, band head-rectification passage or band head-pressurizing unit.
9. according to each described rolling unit in the above claim, it is characterized in that at least one rolling machine frame (Fi) has top and the working roll bottom (Fia, independent driver Fib).
10. according to each described rolling unit in the above claim, it is characterized in that, be furnished with band cooling or heating part before at rolling machine frame (Fi), be adjusted at Temperature Distribution on slab or the thickness of strip influence slippage and to be with arching by means of it.
11. according to each described rolling unit in the above claim, it is characterized in that rolling machine frame (Fi) has the height of table adjustment part at approaching side, can adjust by means of it and bring the implantation site into.
12. according to each described rolling unit in the above claim, it is characterized in that, cutter be arranged at least two rolling machine frames (Fi, Fi+1) between or can sail between them.
13. according to each described rolling unit in the above claim, it is characterized in that, the mill scale washer be arranged at least two rolling machine frames (Fi, Fi+1) between or can sail between them.
14. according to each described rolling unit in the above claim, it is characterized in that, two each other in succession frame (Fi, Fi+1) spacing between is less than the middle strip length that is rolled between described frame.
15. according to each described rolling unit in the above claim, it is characterized in that, at least two rolling machine frames (Fi, Fi+1) heat shield between, especially as to the alternative arrangement of the unit that removes earlier described rolling machine frame (Fi, Fi+1) between or can sail between them.
16. according to each described rolling unit in the above claim, it is characterized in that described rolling unit is connected with process model, can control and regulate for the different measure that influences slippage and setting via described process model.
17. according to each described rolling unit in the above claim, it is characterized in that, described nonstorage calorifier is constructed compactly, and the power density of responding in described band is special every square metre of at least 1500 megawatts, every square metre of about 4000 megawatt spy (+/-18%) preferably.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010063279A DE102010063279A1 (en) | 2010-12-16 | 2010-12-16 | Rolling mill for tubular steel and thin strip production |
| DE102010063279.1 | 2010-12-16 | ||
| PCT/EP2011/072815 WO2012080368A1 (en) | 2010-12-16 | 2011-12-14 | Rolling mill for producing steel for tubes and thin strip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103249506A true CN103249506A (en) | 2013-08-14 |
| CN103249506B CN103249506B (en) | 2016-10-26 |
Family
ID=45401054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180060650.XA Active CN103249506B (en) | 2010-12-16 | 2011-12-14 | For producing the rolling unit of tube steel and strip |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20130263634A1 (en) |
| EP (1) | EP2651578B2 (en) |
| CN (1) | CN103249506B (en) |
| DE (1) | DE102010063279A1 (en) |
| RU (1) | RU2552802C2 (en) |
| WO (1) | WO2012080368A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106001122A (en) * | 2016-06-20 | 2016-10-12 | 王永志 | Steel rolling device |
| CN115430712A (en) * | 2022-09-01 | 2022-12-06 | 燕山大学 | Bar rolling production process considering surface temperature drop compensation |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6023563B2 (en) * | 2012-11-19 | 2016-11-09 | アイシン精機株式会社 | Roll forming method and roll forming apparatus |
| DE102013219507A1 (en) | 2013-05-03 | 2014-11-06 | Sms Siemag Aktiengesellschaft | Hot Rolling Mill |
| AT514079B1 (en) | 2013-05-21 | 2014-10-15 | Siemens Vai Metals Tech Gmbh | Method and device for rapid removal of heavy plates from a rolling mill |
| JP6222062B2 (en) * | 2014-12-03 | 2017-11-01 | Ｊｆｅスチール株式会社 | Sensor mounting base and induction heating device |
| KR101594717B1 (en) * | 2014-12-24 | 2016-02-17 | 주식회사 포스코 | Rolling method, continuous casting and rolling method and apparatus |
| CN118023287A (en) * | 2022-11-11 | 2024-05-14 | 达涅利机械设备股份公司 | Installation and method for producing flat rolled products |
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- 2011-12-14 WO PCT/EP2011/072815 patent/WO2012080368A1/en active Application Filing
- 2011-12-14 RU RU2013132544/02A patent/RU2552802C2/en active
- 2011-12-14 US US13/993,101 patent/US20130263634A1/en not_active Abandoned
- 2011-12-14 EP EP11799672.8A patent/EP2651578B2/en active Active
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| US5910185A (en) * | 1995-01-16 | 1999-06-08 | Mannesmann Aktiengesellschaft | Device for the guidance of hot-rolled strip through an inductor |
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| CN115430712A (en) * | 2022-09-01 | 2022-12-06 | 燕山大学 | Bar rolling production process considering surface temperature drop compensation |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2651578B1 (en) | 2015-01-28 |
| DE102010063279A1 (en) | 2012-06-21 |
| RU2552802C2 (en) | 2015-06-10 |
| EP2651578A1 (en) | 2013-10-23 |
| RU2013132544A (en) | 2015-01-27 |
| US20130263634A1 (en) | 2013-10-10 |
| EP2651578B2 (en) | 2022-02-16 |
| CN103249506B (en) | 2016-10-26 |
| WO2012080368A1 (en) | 2012-06-21 |
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