CA2085736A1 - Process line for the production of metal strips and transporting means thereto - Google Patents
Process line for the production of metal strips and transporting means theretoInfo
- Publication number
- CA2085736A1 CA2085736A1 CA 2085736 CA2085736A CA2085736A1 CA 2085736 A1 CA2085736 A1 CA 2085736A1 CA 2085736 CA2085736 CA 2085736 CA 2085736 A CA2085736 A CA 2085736A CA 2085736 A1 CA2085736 A1 CA 2085736A1
- Authority
- CA
- Canada
- Prior art keywords
- aggregate
- hot
- strip
- process line
- rolling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/06—Constructional features of mixers for pig-iron
-
- 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
- B21B1/466—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 non-continuous process, i.e. the cast being cut before rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/02—Dephosphorising or desulfurising
-
- 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
- B21B1/22—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 plates, strips, bands or sheets of indefinite length
- B21B1/24—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 plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
- B21B1/28—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 plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by cold-rolling, e.g. Steckel cold mill
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
Abstract
PROCESS LINE OF METAL STRIP PRODUCTION AND TRANSPORT
MEANS THERETO
Abstract A process line of metal strip production, comprising blast furnace, steel smelting and rolling process stages interconn-ected by transport means, intermediate product reprocessing aggregates and those for preparing the intermediate products to the next process stage.
Moreover, the blast furnace process stage intermediate product reprocessing aggregate is a ladle 2 for pouring pig iron into a converter 4 with a pig iron desulphurization means 3, and a delivery table is substantially two flights 7,8, the former 7 being a fitting roll table of heating furnaces 9, and the latter 8--a pre-mill hot rolling mill roll table 12 and is equipped with a conveyer maintaining furnace I0. A
coil unreeling device 14 of a pickling aggregate 17 is dis-posed on a section 13 for storing the hot-rolled strip coils and the pickling aggregate I7 is substantially coaxially of a cold rolling mill I8.
The transport means is installed above the process line and is substantially a loop accumulator 16 provided on a bogie 15 mounted for cooperation with a floor trestle I9.
MEANS THERETO
Abstract A process line of metal strip production, comprising blast furnace, steel smelting and rolling process stages interconn-ected by transport means, intermediate product reprocessing aggregates and those for preparing the intermediate products to the next process stage.
Moreover, the blast furnace process stage intermediate product reprocessing aggregate is a ladle 2 for pouring pig iron into a converter 4 with a pig iron desulphurization means 3, and a delivery table is substantially two flights 7,8, the former 7 being a fitting roll table of heating furnaces 9, and the latter 8--a pre-mill hot rolling mill roll table 12 and is equipped with a conveyer maintaining furnace I0. A
coil unreeling device 14 of a pickling aggregate 17 is dis-posed on a section 13 for storing the hot-rolled strip coils and the pickling aggregate I7 is substantially coaxially of a cold rolling mill I8.
The transport means is installed above the process line and is substantially a loop accumulator 16 provided on a bogie 15 mounted for cooperation with a floor trestle I9.
Description
PRO~ESS ~I~IE FOR T~E PRODr~TIO~ 0~ NETA~ S~RIPS
A~D TR~ISPORII~TG ~ S ~HERE10 Technical field The present invention relates to metallurgy, more partic-ul~rly, to the manufacture of cold-rolled and hot-rolled strips and sheet 8 -~rio~ art It is commonly known that over 80~o of cold-rolled ~nd hot-IO ralled ~trips and sheets are produced at plants with ~ compl-ete metallurglcal c~cle comprising blast-furnace~ steel-smelt-ing and rolling production.The metallurgical cycle provides for ' also the processin~ of the required quantity of intermediate prod1acts and realizing transportation, techn_ological and pow-er connections~
Known in the art is a rolling mill for the production of hotrolled steel strips /DE , 03525457~ I987/ in ~Jhich a starting material is produced by continuous casting, and connected to continuous casting inst,allations, for further compensation heat-2Q ing , are heating furnaces behind which is located a continuous multi-stand line for finish rolling.
I,loreover, use is made of the initial heat of blanks with the number of maintain~ furnaces ri~idly connected with the output of 2 hot rolling mill and the steel continuous castin~
installation.
Al~o known is a rollin.~ mill for the rolling of blanks obt~
ained by the method of continuous casting /DE ~ 033Io867~I98 ~
~0 in ~hich for purposes of utllizin~ the heat of cest blanks,bet-ween a roughing line of rolling and a blank continuous cesting machine is locat~d e re~ener~tive furnace of the type used for .
both hot and cold rol.l inF~ nd what is more, thP hot blanks are fed by individual transportin&~ means directly to t}~e furnace, 5 .while cold blanl~s - unon pre-coolin~ in the refrigerator.
~ urther kno~n is r~ ment for castin~ and rollin~ steel strips /J~, 646~057, I939/ in ~rlhich for pur~oses of pr~ serv V
ing the~ castin~ heat, s strip is roll.ed to be placed in heat insulated chambers ~ l~erein they a.re transported over rails IO tot~ roll cont~iner o,' s strip mill, in which ease, too, the OUtpllt o~ t~ hot rol 1 inrr mill is rigidly connPeted ltithtl-).at of .+l-e steel continuoll~ castin~t installrti.on.
~ Itill lcno~ln is el pr~cess line for pro~ucing m*t~l strips, comprising in serl~.ence z~rranred dol! n ~t.ream profluction process 15 the metallur~ical ar~^reg~te3 of ~last f 1rn~sc~ ste-~l smeltinr ~nd rol.l in~ proces~ st.~ges interc-~nnr~cted ~y trPnsporting means, agrrregates for pro~: Pssing interme~iate prodllcts and ~ggregates for prep~rin.g the intermediate products for +l~e su~sequent process stage, ~nd rllon~ r~ith this thP s-tePl smelt-0 ing process stage ag~ regate cor:lprises a converter and a ~l~nkbogie continuous c.~ sting m~chine ~ h ~ roll trainlfor r~ ceivin~ and transferring the blanks, e delivery :t:able, heating furnaces and ~ thermos-accumulator, ~Nhile +.he rollinr~ process sta~e a~regate comprises a hot rollin~ mill with ~ device for rolling ~ strip, 25 a section for storirlg hot-rolled strip ~0~19, a hot-rolled strip transporting device, a pickling aggreg~te ~lith a dev.ice for lln-r~e'ing the ~o;ls, ~nr'. a colcl rolling mill, all of t.he ag~reg-tes o:f met~llurgic?l ~nd rolling proce~s sta~es require ttleir o !n sec+ions ol prep~ring, s-toring and tr nsporting -the inetr-~() medi~-te products /1;~.~- collec-ion of scienti:fic lr!orks ~sovershenst ~ovanie proektorovani~a obs1dlezsvodskogo khoz~astva prepdpri.yatii ch.ernoi metallugii", I9~7, GIPR01~Z, /~lioscow/~ p.62/.
In the give~ process line, provision is made of th~ clear-cut ~oning of main and auxili~r~ production lines o-f coeling or he~t-ing-up and preparin~ t;he intermediate profucts~slabs, ho~-roll-ed rolls) and also of special transporting me~ns /railway,allto-mobile/ or conveyer transfers for the intermediate products from one complex process stage to anoth.er.
The major defects o:E such n process line are great po~er con-sumption, capital and operation expenses and the large area of a building.Beside~considerable means are spent on m~intenance and repair of transport facilities and on the upkeep of assistant~, The provision of a great number of auxiliary and power premi~s~
makes it impossible to block them.
Disclosure of the invention It is the principal object of the present invention to reduce power consumption, capital and operation expenses in the m~nufac-ture of metal strips ~llith the simultaneous reduction of the buil-ding area of a production complex and its individual projects.
Said object is attained owing to the fact that in the proc-ess line of manufacturing a metal strip, comprising in sequence arranged downstream a sequence of operations, the agg~regates of blast furnace, steel smelting and rolling process stage inter-connected by transporting a~rregates of the re-proc~ssing of in+.ermediate produ~ts and the ag~regates of pre~aring t:he inter-25 . mediate products to a next process stage, ~here the processstage steel smelting a.~gregate ^7mprises a converter and a blank continuous casting m~chine wlith a roll table bogie for receiving .
and transferring the blsnk~j an~ a del:Lvery table, heating fur-naces with a thermos-accumulator, an~ the process stage roll.ing ag~regate comprises a hot rolling mill with 8 device for roll-ing the strips, a section of storing the h.ot rolled strip ~oils, a hot rolled strip tr~nsporting means, a picklin~ ~rregate with a device for unre~ling the coils ~nd ~ cold rolling mill~ the process stage blast furnace intermediate product processing ag~-regate is ma.de a~ a ladle for pouring pig iron into the convert-er with a means for desulphurating the pig iron; the delivery table hes a pair of r~ns one of which is a f;tting roll tab-le for the heating furnaces with. ~ faculty of transfer of e bla-nk in a perpendicular direction into the thermos-~ccumula.tor, while the other one - a pre-mill roll table of hot rolling and is provided with a holding conveyer furnace; the pickling aggreg-ate unre~ling de~ioe is situated on the hot-rolled ~trip .coil storing ~ection, and the pickling aggregate is substantially co~
axially o~ the cold rolling mill.
Also, t~e length of a holding conveyer furna¢e mea~ure~ up to that of the ca8t blank~ of a teemed smelt, and the ~ir~t down-~tream ca~t blank~ heatlng furnace i8 spaced /15 .., 2/ ~ from the roll table bogie, ~!herein ~ is ~. measured length of the cast blank.
~he transporting means is disposed above the process line proper and is m~de as a loopin~ g accumulator arranged om a bogie for cooperation with a floor -trestle.
- In the claimed process line of the menufacture of a flat metal strip, all process stages are interconnected by Pegregates for the trans~er, reprocessing and preparation of intermediate pro-.
ducts, the latter two a~gregates of said intermediate productof each and every following process stage bein~ substantiall~
transporting aggregates o the transfer of the product of the previous process stage to ensure a flexible process flow dia-gram enabling one to condllct a continuous mPnufactllring proc-ess with a complete pre-preparation o.~ pig iron for filling into a converter during its transportation, tran~fer the cast blanks from a blank continuous casting machlne for hot rolling over two parallel :r~ns one of which is a f~tting roll table of heating furnace~ for the transfer of a blank in a perpendicular direction into a thermos-accumulator or to a sto-rehouse for unloadin~ commodities in case of an insufficient.
ly high rhythm of rolling or of incoincidence of the rhythm of i~suing a cast blank from the continuous casting machine and that of the rolling, and the other ran is a pre-mill roll table of a hot rolling mill and is provided with a convey-er maintaining furnace havin~ a length equalling the totaL .
length of said teemed melt cast blanks for equalizing the tem-perature of a metal and the direct transfer of the bla ~ by-passing the heating furnaces/ to th.e hot r~lling mill with alow rhythm of the rolling.
~in apparatus for unr~ling t~e rolls of a pickling a~grega~ is situ~ted on t~e sec~ion of llot-rol.~ed strin ro;l storage. ~e 25 transporting means is slbstanti~llv a looping acc~lmulator prov-ided on a bogie for cooperation with a floor trestle, which permits unre~ling the hot-rolled ~oLls on said section, ~ h~r transferrlng a blanl to . cold-roll.in~ mill in the form of a continuous ri~bon ~)~1 p~ssin~ it through continuously pickling ag~regates to ass~re -tl!e tecl~no1Ogical -flexibilit,y and contin~
uity of a sequence or operations and reduce tr~nsportatien charges of the blank ;,nvolved ~)etv~een both cold- ~nd hot-rol-lin~ mills ~nd also to lower power consumption.
Sllmm~rv of the Dr~win~s The above-ident.ified adv~nt~es and al.so aspects of the pres-ent invention will be understandable on consideration of a I0 detailed description of th.e preferred em~odiment of th.e inven-tion~ as her~inbelov~ given, ~itl~ references to t~le accompanied dratr~ings on ~ ich:
~ 'ig.I is a proce~ss line for manuf~cturing a metal strip, general view;
I5 ~ir.2 is a sectio~ of a process line for transferri.ng a cast blank from a steel continuolls teemSng installation to the heat-ing device of a hot roll.ing mill;
~ig.3 is a section o~ ~ process line for transferring a strip from a hot rolled strip .oll storing section of ,q hot rol1.ing mill to the ~ickling baths of a continuously pickling aggreg-,~te of a cold rolling mill.
~he ~ttach~d drawings are schem~tical and serve to ill.ustr~te size of the present invention v~ith no limitations to the~elements of the process line.
P.referred em~odiment of t~e inve~ti.on In ~ccoraance ~!itl~ ~igs.1 to 39 the process line for mallufact-uring a metal strip comprises in technological sequence arrang-ed section I of a process line blast furnace process stage, blast furnace process stage intermediate product processing agg-regate in the form of a ladle 2 for pouring pig iron in~O a 3C converter 4 and provided v;ith a means for desulphuri~ing pig iron 3, converter 4, blank continuous casting macl~ine 5 v!ith a roll tPble bogie 6 -or receivin~ and -transferrin~ t~-!e blanks; deli-ver,~1 ta'~le~ith two r~n~ 7,8, the former 1~ein~, a ~Itting roll table Or heating furnaces 9 for transferrin~ a ;,lank in a per-pendiculr.r direction -to a t,hermos-accumlllator II and the latter beinr, a pre-mill l?ot rol~in~ mill roll table 12 and provided ~! ith a conveyer mainl;aining fllrnace I0; hot-rolle-l strip .~oil storing section 13 ~:litl~. a device pl~ced thereon ~or unr~ling, ~oils 14; bories 15 ~!it;h a looping accumula-tor 1~, con-tinuous-ly pickling ag~rreg~te 17 and cold-rolling mill 1~, floor trestle I9, ~he process line is operated as Eol].o~s.
~ iquid pi~ iron from a section I of a blast llrnace process stage is -transported at roughly equal -time in~tervals alon~ rail way lines in a ladle 2 to be ,~oured into a converter 4,and along witll this,during transportation the pig iron is completely ref-ined ~s to sulp~ur content for a stell smelting process sta~e b,y using desulph.urization 3 means ~ ch -the ladle 2 is provided ~lith, The pig iron is poured into the converter 4 dir~ctly from the ladle 2. A steel melt from th~ conver~er 4 i5 ~elivered to a blank continuous casting machine 5 ~here a blank is cast in the form of a continuousl,y elon~ated ingot bein~ cut into bl~nks of a measured length by a flame cu-tting ma~ine incorporated into said continuous castin~ machine 5. Measured cast blanks are re-ceived and transferred by a roll table bogie 6 along two paral-lel r~ns ; 7,8 of -~.hP deliver~ table.
'Nith a high speed. o-E rolling, a t~.ick cast blank from the roll table bogie 6 is first fed to th.e r~n . 7 of the delivery ta~le and then to a heating fllrnace 9 to be ,se~, : in a hot rolling mill 12.
~ he first heating rurnace 9 (Fi~.3) in the direction o- move-ment of cast blanks is spaced /15,..2/ ~ from the roll table bogie 6 wherein ~ is a measured len~th o- the cast blank,~!hich distance is selected from the conditions of minimal temperature loss of cast blanks ~en the meas1lred cast blank is ~irrctl,y transported over the r~n 7 of the drliver,y . table to heating furnaces 9 .~nd providin~ a possibilit,y of positioning on this section of a conveyer maintaining furnace I0 the otller .r~n of the delivery table of the blank continuous casting 4 machine.In t~e event o ~ir~ct `rolling and the necessity of accumulating the hot cast blanks or unloading the blanks aside, the blanks from the run 7 of the delivery table of heating furnaces9 are fed to a thermos-accumulator II~ the latter's volume ensures the operation of '~7C hot rolling millA~or 8 - I0 hours.
~ ith a low ~peed of rolling, the ~hole measured cast blank from the roll table bogie 6 is fed to ~ conveyer maintaining furnace I0 situated on the run 8 of t}le delivery ~able of a blank continuous casting machine and further to the hot rolling I0 mil~ 12 by using conventional means, an~ along ~ith thi8, the length of said furnacc I0 corres~onds to the total length of tee~ed melt cast blank9, ~ his being 90~ there i~ assured the const~nt shrink fit of a oast blank in the heating furnaoes 9 of the hot rolling mill 12 with a high rate of rolling,preservation of the heat of the blank in the event of technological or other delays in the cont-inuous process by plscing the hot ca~t blank in the thermo9 accumulator II and there is also created a possibility of un-loading an egcess of the measured cast blank aside when the capacity of the continuous casting machine 5 exceeds that of the hot rolllng mill 12.
~ he section /Fig.3/ of a process line ~or tr~nsferring a strip from the ~trip hot rolled -~oll storage section of the hot rolling mill to the pickling baths of the continuously -pickllng ag~re~ate of the cold-rollin~ mill comprises a hot section having at the outlet a device for rolling the hot-rolled strip, a roll storing sections snd a cold section.The facilitie~ of said sections~re serviced by travelling cran-es 20 delivering hot-rolled strip ro;ls 21 ;onto a conveyer 22 of the process line. ~he line includes plckling prepar-ation eqlipment: a manipulator 23 for ~etting the rolls 21 in a position with a horizontal egis of symmetry, an unreel-ing means 14 with a strip end bender 24, a scalebreaker 25, pulling rollers 26, a straightening machine 27 for levelling off curvature of the strip, scissors 28,29 for cutting the front and rear ends of the strip, res~ectively. A welding machine 30 for welding the ends of said strip into an"end-.
less" strip, a flash trimmer 31 for use after the weldin~ of thestrips~ pullirg rollers 32, g~1ide rollers 33 transferrinp the 5 strip to a gallery where is mounted ~ transporting device bet-ween the hot- and cold-rollin,~ mills in the form of an over-head loop accumula+or 1~, strips with stationary rollers 34 and rollers on the bogie 15, the latter bein~ mounted for morement along the gallery over tlle rails ~Ivith the aid of a drive rope IO drum 35.For the transfer of ~ free branch of the strip from an upper stationary roller, provision is m~de of the cassettes of guide rollers 36 and a gllide roller 37 for descending a strip bran¢h to a tensionin~ device 38 positioned upstream of a pick-lin~ aggregate I7, facllities for washing and drying the strip 15 and ~lso the scissor~ and reelers (no~ shown) where the strip is washed and d~ed and a~ain separated lnto strips by the scis-sors with a seam cut, yvhich are rolled on the reelers.
Upon rolling 21 a hot rolled strip and cooling, the ~olls are placed by a travelling crane onto a feeder 22 of the process 20 line, whereupon the Loil 2¢ is tilted by the manipulator 23 in a horizontal position and tr~nsferred onto the unreeling means~
On the unreeling means I4, from the ro ~l 21 the end of the strip is transferred, by using the bender 24, to the roller 25 scalebreaker 25, wherefrom tl~e strip is set in the pullin~
rollers 26 w~ich feed it to the straightening machine 27 snd for trimming the front ends for scissors 28,29.
Upon strai~htenin&~, the front end of the first ~oil 21 is pPssed str~i~ht throu~h the weldin~ machine 30 and flas~ trim-3 mer 31 and then set in the pullin~ rollers 32 which feed thestrip over a lower guide roller 33 ~t 90 up~ard.l'he upper rol-ler 33 directs the strip to the stàtionary rollers 34 of the loop accumulator I6.In a fettlin~ operation, the bo~ie 15 occ-upies the extreme left-hand position ~hen its rollers define 35 a direct guide with t1e stationary rollers 34,in a cantilever fashion, along which th~ strip is raised up, thus fettlin~
the loop accumulator I6~Thereafter the free end of the strip is folded on the upr~Pr stationary rol ler 34 throu~h the an~le of 90 to be directed hori~ontPlly and fettled Plternately 40 with the continuous ~ee~ of the strip to the guide rollers . .
-IO-of c~sset~36 and, unon leavin~ the latter, the strip is released do~ nvlard to the tensio~in~ device 38, with -the aid of the rui~1e roller 37, the strip encl is placed into s?iA device 3~ and the strip is fed to a first picklin~ bath of the picklin~ a~re~ate 17, then a second one and furt'er on until the fettling opera.ti-on is completed, includin~ facilities ~or w~sh.in~ and ~r!Tin~
the strip to the separating scissors ~nd the cutting-o~.t of the seama amd reelers.
The.bo~i~ I5 is then connected ~lith ~he ai~ of a ~1ri.~7e rope drum 35 for a condition of strip ~c~umulation, said bo~ie start-ing moving to the lef~ over t~e floor trestle Ig to ~ri~ ~he strip by cantilever rollers, form loops and~accumulate q strip ~tock in the loop accumul~tor I6~r~lodern h.eav~lei~h.t coi~.s 21 (mass up to 45 t) have a strip len~th of from 8Om to seve~al km and~ therefore~ it is generally sufficient to use a strip Of one ~oll to charge the pic1cling a~regate I7, Upon completion of this operation, picXling i9 carried out at rated epeeds.Upon finishing the unreeling of the ~oil 21 on the unreelin~ means I4~the rough rear end of the strip passes the scalebreaker 25, pullin~ rollers 26 and the str.~ightening maclline 27 to be cut off ~y t~e scissors~The cut length is re-moved and the strip end is p?ssed into the welding mac~line 30 to be ~topped in a weldin~ position,~t t~e same time,follo-J~ing the end of the first strip 21~ on the second unreeling means 14 is bent aside the front end o~ thP second roLl 21 which is set in the scalekreaker 25 and the pulling rollers 26 and the straigl~tening machine 27 and then fed to tl.e scissors 2~
for cutting the rou~h portion of the front end.The cut piece is taken away and t!-e front end of the new ~oil 21 is brou~ht up against the rear end of the previous ~oil 21 in the butt ~eld machine 30 and clamp~ed to fi~ally weld the ends to produce the "endless" strip ~he weldin~ process takes from 50 to ~0 sec. Durin~ w~ldin~ operations, a continuous pick.l-in~ process is maintained due to a loop reserve (up to ~OOm) in t~le loop accumulator 16 ~:h.ose bo~ie 15 travels to -the left towards the stationary rollers 34 and releases the strip by reducing the reserve.
~ nl~h~n~ ~hP ~ .in~ p~cee~, the strip i9 :red into the flash trimmer 31 where th.e ~leld -flas~ is removed,the seam is trimmed off, ~nd t~le ribbon is fed ~ a ~peed above the op-: erating speed of pickling so as to fill the loop accumulator 16anew and m~ke a reserve of -the strip 21 by the end of unreel-ing the second ~oil 21 to assllre th.e ~leldin~ of -the next t~No strips t~lhen the above-de~cribed process is re~eated once a~ain, T~e overhead loop a~cuml1lator I6 is arr~nged togeth.er with other machines one a-rter another, The operations ~lhen t~e sc~le falls off the surface of the strip, inclusive of sc~le brePking~ are performe~ on a hot section ~r~here the presence of dust sC~le has no s~b~tantiel effect on the qu~lity of target product~, win~ to vibr~tions ~nd b~nd~ Of the ~trip, the dust scale m?y ~pp~ar ~!here the loop accumul~tor is loca~ed I6, hut here it is ess,y to b~ intercepted b,y ,~ rrtional ventilatin~
s,ystem and therefore ~he dust content ia sharply reduced on th.e cold section and the ~rocess of its rapid accumulation is prec-luded as is one of "dra~gin~ asunder".
Given a low rate of rol~in~, a measurea.cast blank is SUbjeCt-ed to direct rolling b,y fePding it through ~e conveyer m~int-aining furnace I0. In combining the ~ccumulating and conve,ying functions in the loop accumulator there is no need in the in-terdepartmental conveyer of ~oils whose functions are now per-formed by the loop accumulator ~1ith the conveyin~ of the strip as well as in the section for storing the ~oils of the cold section wh.ose function is performed by the roll storing sect-ion of the hot section (one section instead of two).
~he flexible process line diagram enables one to lower the po~er consumption of metallurgical production by utilizing the heat of blanks under various conditions of a sequence of operations~ e~clude from the complex facilities for convey-ing and storing the hot-rolled rolls for cold rolling and 3~ to enhance density of the development of production are~s>
Industrial a~plicability ~ he claimed invention can most advanta~eously be used in projecting and building metallurgic~l ~lants manufacturln~
metal EltripEI~ eheetEI and ~011~3~ as well aE~ in the reoon~truc--tion of operating prodllction lines.
A~D TR~ISPORII~TG ~ S ~HERE10 Technical field The present invention relates to metallurgy, more partic-ul~rly, to the manufacture of cold-rolled and hot-rolled strips and sheet 8 -~rio~ art It is commonly known that over 80~o of cold-rolled ~nd hot-IO ralled ~trips and sheets are produced at plants with ~ compl-ete metallurglcal c~cle comprising blast-furnace~ steel-smelt-ing and rolling production.The metallurgical cycle provides for ' also the processin~ of the required quantity of intermediate prod1acts and realizing transportation, techn_ological and pow-er connections~
Known in the art is a rolling mill for the production of hotrolled steel strips /DE , 03525457~ I987/ in ~Jhich a starting material is produced by continuous casting, and connected to continuous casting inst,allations, for further compensation heat-2Q ing , are heating furnaces behind which is located a continuous multi-stand line for finish rolling.
I,loreover, use is made of the initial heat of blanks with the number of maintain~ furnaces ri~idly connected with the output of 2 hot rolling mill and the steel continuous castin~
installation.
Al~o known is a rollin.~ mill for the rolling of blanks obt~
ained by the method of continuous casting /DE ~ 033Io867~I98 ~
~0 in ~hich for purposes of utllizin~ the heat of cest blanks,bet-ween a roughing line of rolling and a blank continuous cesting machine is locat~d e re~ener~tive furnace of the type used for .
both hot and cold rol.l inF~ nd what is more, thP hot blanks are fed by individual transportin&~ means directly to t}~e furnace, 5 .while cold blanl~s - unon pre-coolin~ in the refrigerator.
~ urther kno~n is r~ ment for castin~ and rollin~ steel strips /J~, 646~057, I939/ in ~rlhich for pur~oses of pr~ serv V
ing the~ castin~ heat, s strip is roll.ed to be placed in heat insulated chambers ~ l~erein they a.re transported over rails IO tot~ roll cont~iner o,' s strip mill, in which ease, too, the OUtpllt o~ t~ hot rol 1 inrr mill is rigidly connPeted ltithtl-).at of .+l-e steel continuoll~ castin~t installrti.on.
~ Itill lcno~ln is el pr~cess line for pro~ucing m*t~l strips, comprising in serl~.ence z~rranred dol! n ~t.ream profluction process 15 the metallur~ical ar~^reg~te3 of ~last f 1rn~sc~ ste-~l smeltinr ~nd rol.l in~ proces~ st.~ges interc-~nnr~cted ~y trPnsporting means, agrrregates for pro~: Pssing interme~iate prodllcts and ~ggregates for prep~rin.g the intermediate products for +l~e su~sequent process stage, ~nd rllon~ r~ith this thP s-tePl smelt-0 ing process stage ag~ regate cor:lprises a converter and a ~l~nkbogie continuous c.~ sting m~chine ~ h ~ roll trainlfor r~ ceivin~ and transferring the blanks, e delivery :t:able, heating furnaces and ~ thermos-accumulator, ~Nhile +.he rollinr~ process sta~e a~regate comprises a hot rollin~ mill with ~ device for rolling ~ strip, 25 a section for storirlg hot-rolled strip ~0~19, a hot-rolled strip transporting device, a pickling aggreg~te ~lith a dev.ice for lln-r~e'ing the ~o;ls, ~nr'. a colcl rolling mill, all of t.he ag~reg-tes o:f met~llurgic?l ~nd rolling proce~s sta~es require ttleir o !n sec+ions ol prep~ring, s-toring and tr nsporting -the inetr-~() medi~-te products /1;~.~- collec-ion of scienti:fic lr!orks ~sovershenst ~ovanie proektorovani~a obs1dlezsvodskogo khoz~astva prepdpri.yatii ch.ernoi metallugii", I9~7, GIPR01~Z, /~lioscow/~ p.62/.
In the give~ process line, provision is made of th~ clear-cut ~oning of main and auxili~r~ production lines o-f coeling or he~t-ing-up and preparin~ t;he intermediate profucts~slabs, ho~-roll-ed rolls) and also of special transporting me~ns /railway,allto-mobile/ or conveyer transfers for the intermediate products from one complex process stage to anoth.er.
The major defects o:E such n process line are great po~er con-sumption, capital and operation expenses and the large area of a building.Beside~considerable means are spent on m~intenance and repair of transport facilities and on the upkeep of assistant~, The provision of a great number of auxiliary and power premi~s~
makes it impossible to block them.
Disclosure of the invention It is the principal object of the present invention to reduce power consumption, capital and operation expenses in the m~nufac-ture of metal strips ~llith the simultaneous reduction of the buil-ding area of a production complex and its individual projects.
Said object is attained owing to the fact that in the proc-ess line of manufacturing a metal strip, comprising in sequence arranged downstream a sequence of operations, the agg~regates of blast furnace, steel smelting and rolling process stage inter-connected by transporting a~rregates of the re-proc~ssing of in+.ermediate produ~ts and the ag~regates of pre~aring t:he inter-25 . mediate products to a next process stage, ~here the processstage steel smelting a.~gregate ^7mprises a converter and a blank continuous casting m~chine wlith a roll table bogie for receiving .
and transferring the blsnk~j an~ a del:Lvery table, heating fur-naces with a thermos-accumulator, an~ the process stage roll.ing ag~regate comprises a hot rolling mill with 8 device for roll-ing the strips, a section of storing the h.ot rolled strip ~oils, a hot rolled strip tr~nsporting means, a picklin~ ~rregate with a device for unre~ling the coils ~nd ~ cold rolling mill~ the process stage blast furnace intermediate product processing ag~-regate is ma.de a~ a ladle for pouring pig iron into the convert-er with a means for desulphurating the pig iron; the delivery table hes a pair of r~ns one of which is a f;tting roll tab-le for the heating furnaces with. ~ faculty of transfer of e bla-nk in a perpendicular direction into the thermos-~ccumula.tor, while the other one - a pre-mill roll table of hot rolling and is provided with a holding conveyer furnace; the pickling aggreg-ate unre~ling de~ioe is situated on the hot-rolled ~trip .coil storing ~ection, and the pickling aggregate is substantially co~
axially o~ the cold rolling mill.
Also, t~e length of a holding conveyer furna¢e mea~ure~ up to that of the ca8t blank~ of a teemed smelt, and the ~ir~t down-~tream ca~t blank~ heatlng furnace i8 spaced /15 .., 2/ ~ from the roll table bogie, ~!herein ~ is ~. measured length of the cast blank.
~he transporting means is disposed above the process line proper and is m~de as a loopin~ g accumulator arranged om a bogie for cooperation with a floor -trestle.
- In the claimed process line of the menufacture of a flat metal strip, all process stages are interconnected by Pegregates for the trans~er, reprocessing and preparation of intermediate pro-.
ducts, the latter two a~gregates of said intermediate productof each and every following process stage bein~ substantiall~
transporting aggregates o the transfer of the product of the previous process stage to ensure a flexible process flow dia-gram enabling one to condllct a continuous mPnufactllring proc-ess with a complete pre-preparation o.~ pig iron for filling into a converter during its transportation, tran~fer the cast blanks from a blank continuous casting machlne for hot rolling over two parallel :r~ns one of which is a f~tting roll table of heating furnace~ for the transfer of a blank in a perpendicular direction into a thermos-accumulator or to a sto-rehouse for unloadin~ commodities in case of an insufficient.
ly high rhythm of rolling or of incoincidence of the rhythm of i~suing a cast blank from the continuous casting machine and that of the rolling, and the other ran is a pre-mill roll table of a hot rolling mill and is provided with a convey-er maintaining furnace havin~ a length equalling the totaL .
length of said teemed melt cast blanks for equalizing the tem-perature of a metal and the direct transfer of the bla ~ by-passing the heating furnaces/ to th.e hot r~lling mill with alow rhythm of the rolling.
~in apparatus for unr~ling t~e rolls of a pickling a~grega~ is situ~ted on t~e sec~ion of llot-rol.~ed strin ro;l storage. ~e 25 transporting means is slbstanti~llv a looping acc~lmulator prov-ided on a bogie for cooperation with a floor trestle, which permits unre~ling the hot-rolled ~oLls on said section, ~ h~r transferrlng a blanl to . cold-roll.in~ mill in the form of a continuous ri~bon ~)~1 p~ssin~ it through continuously pickling ag~regates to ass~re -tl!e tecl~no1Ogical -flexibilit,y and contin~
uity of a sequence or operations and reduce tr~nsportatien charges of the blank ;,nvolved ~)etv~een both cold- ~nd hot-rol-lin~ mills ~nd also to lower power consumption.
Sllmm~rv of the Dr~win~s The above-ident.ified adv~nt~es and al.so aspects of the pres-ent invention will be understandable on consideration of a I0 detailed description of th.e preferred em~odiment of th.e inven-tion~ as her~inbelov~ given, ~itl~ references to t~le accompanied dratr~ings on ~ ich:
~ 'ig.I is a proce~ss line for manuf~cturing a metal strip, general view;
I5 ~ir.2 is a sectio~ of a process line for transferri.ng a cast blank from a steel continuolls teemSng installation to the heat-ing device of a hot roll.ing mill;
~ig.3 is a section o~ ~ process line for transferring a strip from a hot rolled strip .oll storing section of ,q hot rol1.ing mill to the ~ickling baths of a continuously pickling aggreg-,~te of a cold rolling mill.
~he ~ttach~d drawings are schem~tical and serve to ill.ustr~te size of the present invention v~ith no limitations to the~elements of the process line.
P.referred em~odiment of t~e inve~ti.on In ~ccoraance ~!itl~ ~igs.1 to 39 the process line for mallufact-uring a metal strip comprises in technological sequence arrang-ed section I of a process line blast furnace process stage, blast furnace process stage intermediate product processing agg-regate in the form of a ladle 2 for pouring pig iron in~O a 3C converter 4 and provided v;ith a means for desulphuri~ing pig iron 3, converter 4, blank continuous casting macl~ine 5 v!ith a roll tPble bogie 6 -or receivin~ and -transferrin~ t~-!e blanks; deli-ver,~1 ta'~le~ith two r~n~ 7,8, the former 1~ein~, a ~Itting roll table Or heating furnaces 9 for transferrin~ a ;,lank in a per-pendiculr.r direction -to a t,hermos-accumlllator II and the latter beinr, a pre-mill l?ot rol~in~ mill roll table 12 and provided ~! ith a conveyer mainl;aining fllrnace I0; hot-rolle-l strip .~oil storing section 13 ~:litl~. a device pl~ced thereon ~or unr~ling, ~oils 14; bories 15 ~!it;h a looping accumula-tor 1~, con-tinuous-ly pickling ag~rreg~te 17 and cold-rolling mill 1~, floor trestle I9, ~he process line is operated as Eol].o~s.
~ iquid pi~ iron from a section I of a blast llrnace process stage is -transported at roughly equal -time in~tervals alon~ rail way lines in a ladle 2 to be ,~oured into a converter 4,and along witll this,during transportation the pig iron is completely ref-ined ~s to sulp~ur content for a stell smelting process sta~e b,y using desulph.urization 3 means ~ ch -the ladle 2 is provided ~lith, The pig iron is poured into the converter 4 dir~ctly from the ladle 2. A steel melt from th~ conver~er 4 i5 ~elivered to a blank continuous casting machine 5 ~here a blank is cast in the form of a continuousl,y elon~ated ingot bein~ cut into bl~nks of a measured length by a flame cu-tting ma~ine incorporated into said continuous castin~ machine 5. Measured cast blanks are re-ceived and transferred by a roll table bogie 6 along two paral-lel r~ns ; 7,8 of -~.hP deliver~ table.
'Nith a high speed. o-E rolling, a t~.ick cast blank from the roll table bogie 6 is first fed to th.e r~n . 7 of the delivery ta~le and then to a heating fllrnace 9 to be ,se~, : in a hot rolling mill 12.
~ he first heating rurnace 9 (Fi~.3) in the direction o- move-ment of cast blanks is spaced /15,..2/ ~ from the roll table bogie 6 wherein ~ is a measured len~th o- the cast blank,~!hich distance is selected from the conditions of minimal temperature loss of cast blanks ~en the meas1lred cast blank is ~irrctl,y transported over the r~n 7 of the drliver,y . table to heating furnaces 9 .~nd providin~ a possibilit,y of positioning on this section of a conveyer maintaining furnace I0 the otller .r~n of the delivery table of the blank continuous casting 4 machine.In t~e event o ~ir~ct `rolling and the necessity of accumulating the hot cast blanks or unloading the blanks aside, the blanks from the run 7 of the delivery table of heating furnaces9 are fed to a thermos-accumulator II~ the latter's volume ensures the operation of '~7C hot rolling millA~or 8 - I0 hours.
~ ith a low ~peed of rolling, the ~hole measured cast blank from the roll table bogie 6 is fed to ~ conveyer maintaining furnace I0 situated on the run 8 of t}le delivery ~able of a blank continuous casting machine and further to the hot rolling I0 mil~ 12 by using conventional means, an~ along ~ith thi8, the length of said furnacc I0 corres~onds to the total length of tee~ed melt cast blank9, ~ his being 90~ there i~ assured the const~nt shrink fit of a oast blank in the heating furnaoes 9 of the hot rolling mill 12 with a high rate of rolling,preservation of the heat of the blank in the event of technological or other delays in the cont-inuous process by plscing the hot ca~t blank in the thermo9 accumulator II and there is also created a possibility of un-loading an egcess of the measured cast blank aside when the capacity of the continuous casting machine 5 exceeds that of the hot rolllng mill 12.
~ he section /Fig.3/ of a process line ~or tr~nsferring a strip from the ~trip hot rolled -~oll storage section of the hot rolling mill to the pickling baths of the continuously -pickllng ag~re~ate of the cold-rollin~ mill comprises a hot section having at the outlet a device for rolling the hot-rolled strip, a roll storing sections snd a cold section.The facilitie~ of said sections~re serviced by travelling cran-es 20 delivering hot-rolled strip ro;ls 21 ;onto a conveyer 22 of the process line. ~he line includes plckling prepar-ation eqlipment: a manipulator 23 for ~etting the rolls 21 in a position with a horizontal egis of symmetry, an unreel-ing means 14 with a strip end bender 24, a scalebreaker 25, pulling rollers 26, a straightening machine 27 for levelling off curvature of the strip, scissors 28,29 for cutting the front and rear ends of the strip, res~ectively. A welding machine 30 for welding the ends of said strip into an"end-.
less" strip, a flash trimmer 31 for use after the weldin~ of thestrips~ pullirg rollers 32, g~1ide rollers 33 transferrinp the 5 strip to a gallery where is mounted ~ transporting device bet-ween the hot- and cold-rollin,~ mills in the form of an over-head loop accumula+or 1~, strips with stationary rollers 34 and rollers on the bogie 15, the latter bein~ mounted for morement along the gallery over tlle rails ~Ivith the aid of a drive rope IO drum 35.For the transfer of ~ free branch of the strip from an upper stationary roller, provision is m~de of the cassettes of guide rollers 36 and a gllide roller 37 for descending a strip bran¢h to a tensionin~ device 38 positioned upstream of a pick-lin~ aggregate I7, facllities for washing and drying the strip 15 and ~lso the scissor~ and reelers (no~ shown) where the strip is washed and d~ed and a~ain separated lnto strips by the scis-sors with a seam cut, yvhich are rolled on the reelers.
Upon rolling 21 a hot rolled strip and cooling, the ~olls are placed by a travelling crane onto a feeder 22 of the process 20 line, whereupon the Loil 2¢ is tilted by the manipulator 23 in a horizontal position and tr~nsferred onto the unreeling means~
On the unreeling means I4, from the ro ~l 21 the end of the strip is transferred, by using the bender 24, to the roller 25 scalebreaker 25, wherefrom tl~e strip is set in the pullin~
rollers 26 w~ich feed it to the straightening machine 27 snd for trimming the front ends for scissors 28,29.
Upon strai~htenin&~, the front end of the first ~oil 21 is pPssed str~i~ht throu~h the weldin~ machine 30 and flas~ trim-3 mer 31 and then set in the pullin~ rollers 32 which feed thestrip over a lower guide roller 33 ~t 90 up~ard.l'he upper rol-ler 33 directs the strip to the stàtionary rollers 34 of the loop accumulator I6.In a fettlin~ operation, the bo~ie 15 occ-upies the extreme left-hand position ~hen its rollers define 35 a direct guide with t1e stationary rollers 34,in a cantilever fashion, along which th~ strip is raised up, thus fettlin~
the loop accumulator I6~Thereafter the free end of the strip is folded on the upr~Pr stationary rol ler 34 throu~h the an~le of 90 to be directed hori~ontPlly and fettled Plternately 40 with the continuous ~ee~ of the strip to the guide rollers . .
-IO-of c~sset~36 and, unon leavin~ the latter, the strip is released do~ nvlard to the tensio~in~ device 38, with -the aid of the rui~1e roller 37, the strip encl is placed into s?iA device 3~ and the strip is fed to a first picklin~ bath of the picklin~ a~re~ate 17, then a second one and furt'er on until the fettling opera.ti-on is completed, includin~ facilities ~or w~sh.in~ and ~r!Tin~
the strip to the separating scissors ~nd the cutting-o~.t of the seama amd reelers.
The.bo~i~ I5 is then connected ~lith ~he ai~ of a ~1ri.~7e rope drum 35 for a condition of strip ~c~umulation, said bo~ie start-ing moving to the lef~ over t~e floor trestle Ig to ~ri~ ~he strip by cantilever rollers, form loops and~accumulate q strip ~tock in the loop accumul~tor I6~r~lodern h.eav~lei~h.t coi~.s 21 (mass up to 45 t) have a strip len~th of from 8Om to seve~al km and~ therefore~ it is generally sufficient to use a strip Of one ~oll to charge the pic1cling a~regate I7, Upon completion of this operation, picXling i9 carried out at rated epeeds.Upon finishing the unreeling of the ~oil 21 on the unreelin~ means I4~the rough rear end of the strip passes the scalebreaker 25, pullin~ rollers 26 and the str.~ightening maclline 27 to be cut off ~y t~e scissors~The cut length is re-moved and the strip end is p?ssed into the welding mac~line 30 to be ~topped in a weldin~ position,~t t~e same time,follo-J~ing the end of the first strip 21~ on the second unreeling means 14 is bent aside the front end o~ thP second roLl 21 which is set in the scalekreaker 25 and the pulling rollers 26 and the straigl~tening machine 27 and then fed to tl.e scissors 2~
for cutting the rou~h portion of the front end.The cut piece is taken away and t!-e front end of the new ~oil 21 is brou~ht up against the rear end of the previous ~oil 21 in the butt ~eld machine 30 and clamp~ed to fi~ally weld the ends to produce the "endless" strip ~he weldin~ process takes from 50 to ~0 sec. Durin~ w~ldin~ operations, a continuous pick.l-in~ process is maintained due to a loop reserve (up to ~OOm) in t~le loop accumulator 16 ~:h.ose bo~ie 15 travels to -the left towards the stationary rollers 34 and releases the strip by reducing the reserve.
~ nl~h~n~ ~hP ~ .in~ p~cee~, the strip i9 :red into the flash trimmer 31 where th.e ~leld -flas~ is removed,the seam is trimmed off, ~nd t~le ribbon is fed ~ a ~peed above the op-: erating speed of pickling so as to fill the loop accumulator 16anew and m~ke a reserve of -the strip 21 by the end of unreel-ing the second ~oil 21 to assllre th.e ~leldin~ of -the next t~No strips t~lhen the above-de~cribed process is re~eated once a~ain, T~e overhead loop a~cuml1lator I6 is arr~nged togeth.er with other machines one a-rter another, The operations ~lhen t~e sc~le falls off the surface of the strip, inclusive of sc~le brePking~ are performe~ on a hot section ~r~here the presence of dust sC~le has no s~b~tantiel effect on the qu~lity of target product~, win~ to vibr~tions ~nd b~nd~ Of the ~trip, the dust scale m?y ~pp~ar ~!here the loop accumul~tor is loca~ed I6, hut here it is ess,y to b~ intercepted b,y ,~ rrtional ventilatin~
s,ystem and therefore ~he dust content ia sharply reduced on th.e cold section and the ~rocess of its rapid accumulation is prec-luded as is one of "dra~gin~ asunder".
Given a low rate of rol~in~, a measurea.cast blank is SUbjeCt-ed to direct rolling b,y fePding it through ~e conveyer m~int-aining furnace I0. In combining the ~ccumulating and conve,ying functions in the loop accumulator there is no need in the in-terdepartmental conveyer of ~oils whose functions are now per-formed by the loop accumulator ~1ith the conveyin~ of the strip as well as in the section for storing the ~oils of the cold section wh.ose function is performed by the roll storing sect-ion of the hot section (one section instead of two).
~he flexible process line diagram enables one to lower the po~er consumption of metallurgical production by utilizing the heat of blanks under various conditions of a sequence of operations~ e~clude from the complex facilities for convey-ing and storing the hot-rolled rolls for cold rolling and 3~ to enhance density of the development of production are~s>
Industrial a~plicability ~ he claimed invention can most advanta~eously be used in projecting and building metallurgic~l ~lants manufacturln~
metal EltripEI~ eheetEI and ~011~3~ as well aE~ in the reoon~truc--tion of operating prodllction lines.
Claims (4)
1.A process line of the production of a metal strip, comp-rising in sequence arranged the metallurgical aggregates, as viewed in the manufacturing process direction, of blast furn-ace, steel smelting and rolling process stages which are in-terconnected by transport means, aggregates for the reprocess-ing intermediate products and those for preparing the inter-mediate products to the next process stage, said steel-smel-ting process stage aggregate including a converter 4 and a blank continuous casting machine 5 with a roll-table bogie 6 for receiving and conveying the blanks, delivery tables 7,8, heating furnaces 9 and a thermos-accumulator II, while said process stage rolling aggregate comprising a hot rolling mill 12 with a device for rolling e strip coil, a section 13 for storing hot-rolled strip coils, a hot rolled strip transport means, a pickling aggregate I7 with a device for unreeling the coils I4, a cold-rolling mill I8, characterized in that the blast furnace process stage intermediate product reproc-essing aggregate is a ladle 2 for pouring pig iron into the converter 4 with a pig iron desulphurization means 3, a del-ivery table has two flights 7,8, the former being substant-ially a fitting roll table of said heating furnaces 9 for conveying the blank in a perpendicular direction into the thermos-accumulator II, and the latter 8 -- a pre-mill hot rolling mill roll table 12 and is provided with a conveyer maintaining furnace I0; said coil unreeling device I4 of said pickling aggregate I7 is disposed on said storing sec-tion I7, and the pickling aggregate I7 is substantially co-axially of the cold rolling mill I8.
2.A process line as claimed in Claim I, characterized in that the length of the conveyer heating furnace Io measures up to the total length of teemed melt cast blanks.
3.A process line as claimed in Claim I, characterized in that a first heating furnace 9 in the direction of move-ment of cast blanks is spaced /15...20/L from the roll table bogie 6 where L is a measured length of the cast blank.
4.A transport means of the process line as claimed in Claim I, characterized in that it is mounted above the process line and is substantially a loop accumulator I6 disposed on a bogie I5 with a faculty of cooperation with a floor trestle I9, x x x x x
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU4938308 | 1991-04-17 | ||
| SU4938308/27 | 1991-04-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2085736A1 true CA2085736A1 (en) | 1992-10-18 |
Family
ID=21575586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2085736 Abandoned CA2085736A1 (en) | 1991-04-17 | 1992-04-14 | Process line for the production of metal strips and transporting means thereto |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0541817A4 (en) |
| AU (1) | AU651694B2 (en) |
| CA (1) | CA2085736A1 (en) |
| WO (1) | WO1992018270A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2799275B2 (en) * | 1993-02-26 | 1998-09-17 | 株式会社日立製作所 | Plating equipment and its operation method |
| DE19839370A1 (en) * | 1998-08-28 | 2000-03-09 | Schloemann Siemag Ag | Process and plant for the production of hot wide strip from in particular thin slabs |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1960506B2 (en) * | 1969-01-08 | 1976-01-15 | Nippon Kokan KX., Tokio | CONTINUOUS STRIP MILL |
| SU582286A1 (en) * | 1976-06-24 | 1977-11-30 | Всесоюзный Научно-Исследовательский И Проектный Институт По Очистке Технологических Газов, Сточных Вод И Использованию Вторичных Энергоресурсов Предприятий Черной Металлургии | Device for desulfurizing slag melt |
| SU806769A1 (en) * | 1979-03-05 | 1981-02-23 | Научно-Производственное Объединение"Тулачермет" | Method of desulfurizing cast iron |
| JPS586701A (en) * | 1981-07-07 | 1983-01-14 | Nippon Kokan Kk <Nkk> | Continuous casting-hot rolling installation |
| DE3310867A1 (en) * | 1983-03-25 | 1984-10-04 | Mannesmann AG, 4000 Düsseldorf | Cast-rolling plant for rolling continuously cast material |
-
1992
- 1992-04-14 WO PCT/RU1992/000075 patent/WO1992018270A1/en not_active Application Discontinuation
- 1992-04-14 AU AU17916/92A patent/AU651694B2/en not_active Ceased
- 1992-04-14 CA CA 2085736 patent/CA2085736A1/en not_active Abandoned
- 1992-04-14 EP EP92910355A patent/EP0541817A4/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| WO1992018270A1 (en) | 1992-10-29 |
| AU651694B2 (en) | 1994-07-28 |
| EP0541817A1 (en) | 1993-05-19 |
| AU1791692A (en) | 1992-11-17 |
| EP0541817A4 (en) | 1995-02-22 |
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