CN106180191A - A kind of wire and rod continuous casting billet is exempted to heat and is directly rolled system and method - Google Patents

A kind of wire and rod continuous casting billet is exempted to heat and is directly rolled system and method Download PDF

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Publication number
CN106180191A
CN106180191A CN201610783622.5A CN201610783622A CN106180191A CN 106180191 A CN106180191 A CN 106180191A CN 201610783622 A CN201610783622 A CN 201610783622A CN 106180191 A CN106180191 A CN 106180191A
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China
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strand
roller
way
continuous casting
wire
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CN201610783622.5A
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Chinese (zh)
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CN106180191B (en
Inventor
罗利华
佐祥均
阎建武
袁钢锦
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中冶赛迪工程技术股份有限公司
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-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
    • B21B1/46Metal-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
    • B21B1/466Metal-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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12Accessories for subsequent treating or working cast stock in situ
    • B22D11/124Accessories for subsequent treating or working cast stock in situ for cooling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12Accessories for subsequent treating or working cast stock in situ
    • B22D11/124Accessories for subsequent treating or working cast stock in situ for cooling
    • B22D11/1246Nozzles; Spray heads

Abstract

The present invention provides a kind of wire and rod continuous casting billet to exempt to heat and directly roll system and method, cuts including conticaster, the fast hydraulic pressure closely arranged successively, cuts rear roller-way, strand stream converges roller-way, transporting hot send roller-way and wire and bar mill;Described strand stream converges roller-way and the strand on the most first-class is converged to transporting hot send on roller-way, described in cut rear roller-way and strand stream converges and is provided with between roller-way for stopping the gate mechanism that strand enters and lets pass.Conticaster high efficiency continuous casting of the present invention, strand pull-out temperature is high, and shape is regular, and temperature loss is little, and strand is cut off quickly, and strand initial temperature is high.By gate mechanism, the strand cut off enters high speed strand stream the most in order and converges roller-way, easy and simple to handle, easily organizes production.Strand is high to inlet of rolling mill temperature, can exempt to heat Direct Rolling, little to milling train damage.

Description

A kind of wire and rod continuous casting billet is exempted to heat and is directly rolled system and method
Technical field
The invention belongs to metal continuous cast and rolling technical field, be specifically related to a kind of wire and rod continuous casting billet and exempt to heat directly to roll be System and method.
Background technology
At present the production technology of wire and rod mostly is: molten steel after continuous cast mold and secondary cooling zone after cooled and solidified by withdrawal straightening machine Aligning pull-out strand, strand is sent to ejection district by roller-way after cutting and rollgang after flame Length-fixing cutting.Heat is needed to send Strand is through tilting gear, and machine for moving steel, a point steel machine is delivered to heat and sent roller-way to be directly sent to steel rolling to enter heating furnace;Need the strand rolled off the production line through turning over Steel machine, machine for moving steel, divide a steel machine to deliver to turn over steel cold bed and cool down, then casting blank collecting stand collection crane rolls off the production line and stores up.Heat is sent The general temperature of strand to heater for rolling steel is in the range of 500-600 DEG C, and the strand of this temperature is to cannot be carried out directly rolling System, needing heating furnace to be heated to 1040-1140 DEG C could roll.The strand rolled off the production line typically can be stored up and often naturally cool to Temperature, then deliver to rolling after the heating of steel rolling heated stove.The defect of this production procedure is: high temperature strand is because of subsequent handling length Cooling, reheats and causes substantial amounts of energy consumption, even hot-loading and hot-conveying, it is still desirable to heating, the most also consume substantial amounts of The energy;The construction investment of heater for rolling steel, regular maintenance, material consumption etc. also will expend huge economic input and produces into This, and add carbon emission.
In order to avoid the generation of above-mentioned phenomenon, using direct sending Direct Rolling Technology is that one is the safest and arrange flexibly Execute.The core of direct sending Direct Rolling Technology is: strand is without heating furnace Direct Rolling, and steel rolling start rolling temperature is at pair rolling and low Between warm-rolling system, finishing temperature and pair rolling temperature difference are little, fast transportation, promote the strand temperature to milling train, shorten Conticaster is to the time of milling train, it is ensured that the start rolling temperature of milling train is at reasonable interval.
Continuous casting billet delivers to milling train at a high speed after cutting off, and strand is without heat treated, and its surface temperature is than pair rolling open rolling temperature Spend low, but strand central temperature specific surface temperature is much higher, it is easy to deform deep and thorough, also help strand internal flaw simultaneously Pressing and elimination, rough rolling step internal high temperature district, to external diffusion, produces samming effect, makes surface temperature increase, and promotes internal matter The improvement of amount.
The Chinese patent of Application No. 201020160403.X discloses a kind of section bar, the flexible connecting of bar endless rolling Device, according to patent, it provides the flexible connecting device of three kinds of forms: one is to be made up of soft pressure roller system;A kind of It is to have big pressure milling train to constitute;One is to have above-mentioned soft pressure roller system to collectively form with big pressure milling train, selects in three kinds of forms One be arranged between crystallizer and conventional rolling mill group.This patent is provided with screwdown device between conticaster and milling train, gradually The cross dimensions of second compression strand is to increase the strand speed to steel rolling, thus realizes continuous casting and the seamless link of steel rolling and flexibility Linking, shortens flow process and production line length.Due to the process not having strand to cut off in this technology, single current typically can only be realized raw Produce.For wire and rod produces, single current production line output is too low, during as produced according to multithread, the most first-class will correspondence join The problems such as corresponding milling train group, can cause investment excessive, produced on-site organization and administration inconvenience.
The Chinese patent of Application No. 201010185485.8 discloses and a kind of utilizes residual heat of molten steel to produce section bar bar Continuous-casting continuous-rolling method, according to patent, it provides a kind of technological process, from smelting molten steel, temperature control continuous casting, rectification tandem rolling, Continuous shear stress or batch, cooling, the big bag of finishing is to putting in storage.This invention overcomes the waste energy that existing technique exists, and repeatedly cuts Head, whole post bake and the problem of a piece short chi of every section of generation, saved the energy, decreased loss.But this technology is to single current Or continuous casting of two strands in parallel machine is more suitable, and for multiple-strand caster, the amount of milling train unit will the hugest, and be difficult to operate with Production management organizes.
The Chinese patent application of Application No. 201310475792.3 discloses a kind of Direct Rolling and produces the side of long profiles Method, according to patent, the method includes conticaster, ejection roller way, is incubated bridging table, and induction heating apparatus and milling train etc. set Standby.Although this invention improves the mode that continuous casting material carries out in original long profiles production process heating furnace heating, but uses The problems such as it is high that sensing heating yet suffers from equipment investment, produces and consumes electric energy greatly, burning, oxidization burning loss.
The Chinese patent of Application No. 201220380196.8 discloses a kind of continuous casting and rolling device producing long material, according to Described in patent, this device includes conticaster, is closely connected with roller hearth type heating furnace, Traverse Displacement Unit and energy in turn real after cutting machine The milling train of existing zerolling.Although traditional heating stove is changed into roller hearth type heating furnace by this patent of invention, but it can only be to strand Lower surface heats, and easily causes strand non-uniform temperature, therefore also needs to build supplementary heating stove, adds operation, increase Big equipment investment and energy resource consumption.
The Chinese patent of Application No. 201320582646.6 discloses a kind of raw without heating low temperature Direct Rolling small billet Producing the device of reinforcing bar, according to patent, conticaster is multiple-strand caster, and every flow export arranges ejection roller way, ejection roller way End is provided with the deployment device that can laterally allocate blank, is provided with some in the side that traversing stand is relative with ejection roller way and rolls Line, ejection roller way and rollgang are equipped with thermal insulation cover.Although this patent eliminates heating furnace, but this device uses continuous casting billet many Row is parallel, and after being divided steel by horizontal deployment device, single current is sent into heat and sent the mode of roller-way, can cause entry into heat and send the continuous casting of roller-way Base waiting time process and lower the temperature, and due to traversing point of steel of needs, too increase the cool time of continuous casting billet.Essence is come up Saying, this device does not has the difference of essence with the most conventional hot delivery and hot charging technology, and continuous casting billet temperature drop is excessive, it is impossible to meets milling train and rolls The requirement of system.
The Chinese patent of Application No. 201420728124.7 discloses a kind of company for producing Bar Wire Product and section bar Casting-Direct Rolling device, according to patent, it provides a kind of continuous casting and direct rolling device, and including conticaster, strand cuts Device and cut rear roller-way, quick insulating roller way and steel rolling production-line.Quickly the roller-way width of insulating roller way from conticaster to steel rolling Being gradually reduced on the direction of production line and pass through to the single strand of receiving, this roller-way is provided with multiple cold/hot metal detector and high temperature Meter, before attemperator is arranged at quick insulating roller way or before steel rolling production-line.Although this patent have employed stepped ejection side Formula, also eliminates traditional heating furnace, also uses the linking roller-way of multithread single current and uses Insulation, but the most right The pulling rate of conticaster own and secondary cooling scheme are improved, and do not cut off strand simultaneously or the time of cutting off claims, because casting The place that base cuts off is only strand and exempts to heat the initial temperature of Direct Rolling, if strand initial temperature is the highest, that is just talked not On exempt to heat and directly roll (open rolling casting blank surface temperature > 850 DEG C).It addition, the premise by ladder ejection mode is that continuous casting must be stablized Direct motion, and centre can only control sending successively of strand by controlling pulling rate, and such operation easier is very big, is not easy to existing Field produces.
Summary of the invention
The deficiencies in the prior art in view of the above, it is an object of the invention to provide a kind of wire and rod continuous casting billet and exempt from heating Directly roll system, farthest improve temperature when strand cuts off, shorten the strand time from continuous casting to steel rolling, reduce strand and exist Temperature loss in course of conveying.
For achieving the above object and other relevant purposes, technical solution of the present invention is as follows:
A kind of wire and rod continuous casting billet is exempted to heat and is directly rolled system, cuts including conticaster, the fast hydraulic pressure closely arranged successively, cuts Rear roller-way, strand stream converge roller-way, transporting hot send roller-way and wire and bar mill;Described strand stream converges roller-way by the most first-class Strand converges to transporting hot and send on roller-way.
Using said structure, conticaster uses minor radius high casting speed continuous casting machine, has radius little, and metallurgical length is short, Gao La The feature of speed, usual radius is less than 9m;Closely arrange fast hydraulic pressure in minor radius high casting speed continuous casting machine downstream to cut, contract to greatest extent The distance that little withdrawal straightening machine and fast hydraulic pressure are cut, improves temperature when strand is cut off;Fast hydraulic pressure is cut on-line synchronous and is cut off continuous casting Base, efficient and convenient, to cut off speed soon, cut off success rate height, equipment failure rate is low, cuts off the regular strand that do not affects of otch and rolls, Conventional flame cutting needs one or two minutes, and fast hydraulic pressure is cut and had only to a few seconds, shortens shear time, subtracts Lack temperature drop.Strand roller-way region after cutting also is that multithread strand comes together simultaneously, and converges to strand stream convergence roller-way, can So that strand cooling is slowly, reduce temperature loss, it is ensured that temperature during follow-up rolling.
Further, described strand stream converges roller-way is the narrow horn-like shape in width downstream, upstream.Can be by the strand on the most first-class Converging to transporting hot at a high speed and send on roller-way, strand converges at a high speed, non-slip, not jam.
Further, cut rear roller-way and strand stream described in converge and be provided with between roller-way for stopping that strand enters and lets pass Gate mechanism.
Further, gate can stop when rising that strand enters strand stream and converges roller-way, the strand of clearance place stream when falling Enter strand stream and converge roller-way, play strand and transport the effect of regulation in order successively.
Further, described gate mechanism is the adjustable end stop using hydraulic pressure or air pressure to drive.
Further, described conticaster radius is 6m-9m.
Further, described conticaster pulling rate is more than 3.5m/min;Described cut rear roller-way, transporting hot send roller-way to be frequency conversion or non- Frequency conversion roller-way.
Further, high casting speed continuous casting machine is provided with cooling sprayer, including spraying mechanism and as fixed support Water inlet supervisor, described water inlet supervisor be positioned at casting stream inner arc side, described spraying mechanism be arranged on into water supervisor on, and with water inlet Supervisor's connection;Described water inlet supervisor is divided into multiple segmentation along casting stream arc direction, and step-by-step arrangement is conveniently replaceable maintenance;Each described The upper and lower two ends of segmentation are provided with water inlet.Each is segmented into a spray district, and each district uses upper and lower water inlet to lead to simultaneously The mode of water, it is to avoid cool down lower skewness waterborne.
Use said structure, during the accident such as conticaster generation bleed-out, support is damaged little, do not affect conticaster and reorganize Producing, easy installation and removal, fixed support is also to be responsible for into water simultaneously, carries water-cooled effect, is unlikely to deform.
Further, described spraying mechanism is nozzle ring group, described nozzle ring group place plane with casting stream vertical, and casting flow by Passing in the middle of nozzle ring group, this nozzle ring group is connected with water inlet supervisor by connecting tube, and nozzle ring group is provided with multiple nozzle.
Further, described nozzle ring group is eight-sided formation, including the 4 root length pipes alternately connected and 4 short tubes, near interior The long tube of arc side is connected with water inlet supervisor by connecting tube, and described nozzle is arranged on short tube.
Further, described short tube is 120 ° with the angle of long tube.
Further, described nozzle ring group constitutes eight-sided formation in by 8 isometric jet pipes, and described nozzle pitch is arranged on On jet pipe, described jet pipe is connected with water inlet supervisor by connecting tube.
Further, described nozzle is threadeded with nozzle ring group, described connecting tube and water inlet supervisor and nozzle ring group grafting.
Simple in construction, nozzle ring group is easily installed and dismantles, assembly globality, and integration degree is high, it is achieved that nozzle Quick-replaceable.
Further, the aperture of described nozzle is more than or equal to 2mm.It is suitable for water quality scope wide, is not easily blocked, nozzle atomization effect Good, jet velocity is fast.
Present invention simultaneously provides a kind of wire and rod continuous casting billet to exempt to heat straight rolling method, use above-mentioned a kind of wire and rod continuous casting Base is exempted to heat and is directly rolled system, and the strand that conticaster is produced is delivered to strand stream by roller-way after cutting after rapid hydraulic cutting cuts and converged Poly-roller-way, strand stream converges roller-way and cuts and arrange gate mechanism between rear roller-way, puts according to the sequencing that strand arrives OK, strand converges at a high speed transporting hot through strand stream convergence roller-way and send roller-way, and is sent roller-way by fast for strand single current ground by transporting hot Speed is transported to milling train and carries out exempting from heating rolling.
Further, described conticaster radius is 6m-9m;Pulling rate is more than 3.5m/min;By conticaster secondary cooling system Controlling temperature before strand cuts and be more than 980 DEG C, the high temperature strand after shearing is delivered to steel rolling rolled through convergence and conveying at a high speed Cheng Zhong, temperature loss controls in the range of less than 50 DEG C.Shorten time of delivery by high pulling rate and high speed roller-way, reduce temperature drop; Strand after ejection roller way many carry in groups, it is also possible to reduce temperature loss, it is ensured that rolling quality.
High casting speed continuous casting machine is equipped with high pulling rate crystallizer, and pulling rate is more than 3.5m/min, is equipped with high efficient secondary cooling system, protects Before card strand cutting, temperature is more than 980 DEG C, strand neat appearance, excellent surface quality.High pulling rate crystallizer has lower resistance chamber Type structure, efficient cooling water seam, copper pipe uniqueness corner structure is to ensure strand uniformly cooling down and going out crystallizer in crystallizer Casting blank shell thickness.High efficient secondary cooling system has optimization design secondary cooling zone and arrangement of nozzles, high efficient secondary cooling water water distribution System, to ensure temperature when strand uniformly cools down and strand goes out two cold closed chamber.Reduce withdrawal straightening machine and quick liquid to greatest extent The distance that pressure is cut, improves temperature when strand is cut off.
As it has been described above, the invention has the beneficial effects as follows:
Minor radius high casting speed continuous casting machine high efficiency continuous casting, strand pull-out temperature is high, and shape is regular, and temperature loss is little, and strand is cut Disconnected quick, strand initial temperature is high.After high-temperature continuous casting blank goes out withdrawal straightening machine, strand in fly-cutting, various flows converges at a high speed successively Gathering heat send roller-way rapid transit to mill, and the most heated Direct Rolling of blank, which strand converges transportation Middle temperature drop is minimum, easy and simple to handle, easily organizes production.Steel rolling strand temperature of arriving at a station is high, can exempt to heat Direct Rolling, damage milling train Little.The present invention farthest improves temperature when strand cuts off, and farthest shortens strand from continuous casting to steel rolling Time, farthest decrease strand temperature in course of conveying and thermal loss, make full use of continuous casting billet metallurgy heat energy, Greatly reduce strand in course of conveying, save energy resource consumption, improve lumber recovery, save metal consumption, shorten production week Phase, and simplify the technological process of production, reduce plant area and transporting equipment, save producing cost and capital expenditure, improve Product quality.Pass through cooling sprayer, it is to avoid the inequality that traditional square billet two cold water spray bar top nozzle injection flow rate is up-small and down-big Even problem, it is therefore prevented that the bleed-out accident damage to spray system;Nozzle ring assembly and disassembly are convenient, fast, accurate positioning, it is greatly saved Maintenance time, improve the labor intensity of maintenance operation personnel;Farthest improve the operating rate of billet caster, strand Cooling uniformly, improves slab quality, provides guarantee for square billet height pulling rate, it is achieved that efficiently high yield.
Accompanying drawing explanation
Fig. 1 is the top view that wire and rod continuous casting billet high speed direct sending of the present invention directly rolls system arrangement;
Fig. 2 is the front view that wire and rod continuous casting billet high speed direct sending of the present invention directly rolls system arrangement;
Fig. 3 is the structural representation of cooling sprayer of the present invention;
Fig. 4 is the structural representation of the nozzle ring group of the present invention;
Fig. 5 is another structural representation of nozzle ring group of the present invention.
Piece mark explanation
1 minor radius high casting speed continuous casting machine
2 fast hydraulic pressures are cut
3 cut rear roller-way
4 gate mechanisms
5 high speed strand streams converge roller-way
6 rapid transit heat send roller-way
7 wire and bar mills
11 casting streams
12 water inlet supervisors
13 nozzle ring groups
131 long tubes
132 short tubes
133 nozzles
134 jet pipes
14 connecting tubes
15 water inlets
Detailed description of the invention
By particular specific embodiment, embodiments of the present invention being described below, those skilled in the art can be by this explanation Content disclosed by book understands other advantages and effect of the present invention easily.
Embodiment
As depicted in figs. 1 and 2, a kind of wire and rod continuous casting billet is exempted to heat and is directly rolled system, is mainly used for the production of wire and rod During, cut 2 including minor radius high casting speed continuous casting machine 1, the fast hydraulic pressure closely arranged successively, cut rear roller-way 3, high speed strand stream Converge roller-way 5, rapid transit heat send roller-way 6 and wire and bar mill 7;Cut rear roller-way 3 and high speed strand stream converges and sets between roller-way 5 Being equipped with for stopping the gate mechanism 4 that strand enters and lets pass, gate can stop when rising that strand enters high speed strand stream and converges Roller-way 5, when falling, the strand of clearance place stream enters strand stream and converges roller-way, plays strand and transports the work of regulation in order successively With.After the pull-out of strand height pulling rate, high temperature strand cuts rear roller-way 3 by entrance after certain cutting to length, and gate mechanism 4 is according to arriving first elder generation Sending principle to be let pass by strand successively and enter high speed strand stream convergence roller-way 5, strand converges to rapid transit heat at a high speed and send on roller-way 6 It is transported to wire and bar mill 7 carry out exempting from heating rolling.
Wherein, minor radius high casting speed continuous casting machine 1 radius is 6m-9m;Being equipped with high pulling rate crystallizer, pulling rate is more than 3.5m/ min.High pulling rate crystallizer has lower resistance cavity structure, efficient cooling water seam, and copper pipe uniqueness corner structure is to ensure that strand exists Uniformly cooling down and going out crystallizer casting blank shell thickness in crystallizer.It is equipped with cooling system, it is ensured that before strand cutting, temperature is more than 980 DEG C, strand neat appearance, excellent surface quality.Fast hydraulic pressure is closely set in minor radius high casting speed continuous casting machine 1 downstream and cuts 2, Reduce withdrawal straightening machine and fast hydraulic pressure to greatest extent and cut the distance of 2, improve temperature when strand is cut off;It is online same that fast hydraulic pressure cuts 2 Step cuts off continuous-cast blank, efficient and convenient, cuts off speed soon, cuts off success rate height, and equipment failure rate is low, cuts off the regular not shadow of otch Ringing strand rolling, conventional flame cutting needs one or two minutes, and fast hydraulic pressure is cut 2 and had only to a few seconds, shortens Shear time, decreases temperature drop.
Wherein cutting rear roller-way 3 is high speed roller-way, uses frequency conversion or non-frequency, and strand can be delivered at a high speed high speed strand Stream converges roller-way 5.High speed strand stream converges roller-way 5 groups and fills in loudspeaker, upstream become narrow gradually to downstream, can be by the most first-class Strand converges to rapid transit heat at a high speed and send on roller-way 6, and strand converges at a high speed, non-slip, not jam.Rapid transit heat send roller-way 6 is high speed roller-way, can use frequency conversion or non-frequency, and strand is delivered to mill at a high speed after entering this roller-way and rolls by strand System.
Strand roller-way 3 region after cutting is many and comes together, strand is sent into high speed strand stream in groups and converges roller-way 5 During and high speed strand stream converge strand on roller-way 5 be also many in groups, so can make strand cooling slowly, subtract Few temperature loss, it is ensured that temperature during follow-up rolling.
In this example, gate mechanism 4 is preferably the adjustable end stop using hydraulic pressure or air pressure to drive, it is simple to remotely operate control.Its In cut rear roller-way 3, high speed strand stream converges roller-way 5, rapid transit heat and send roller-way 6 to be high speed roller-way, speed can be controlled in 30- 100m/min。
The present invention is to improve pulling rate, and it is basic for improve strand going out conticaster temperature;High temperature strand after shearing is through at a high speed Converging and steel rolling rolling is delivered in conveying, the whole process temperature damage control is in the range of less than 50 DEG C.
The most as shown in Figure 3 and Figure 4, its Small Radius high casting speed continuous casting machine 1 is provided with cooling sprayer, its bag Including spraying mechanism and water inlet supervisor 12, in this example, water inlet supervisor 12 supports spraying mechanism simultaneously as fixed support, it is critical only that: Water inlet supervisor 12 is positioned at the inner arc side of casting stream 11, and spraying mechanism is for carrying out cooling twice to strand, and it is arranged on is responsible for into water On 12, and connect with water inlet supervisor 12.
Due to little, no to water inlet supervisor 12 damage during the accidents such as water inlet supervisor 12 is positioned at inner arc side, conticaster generation bleed-out Affecting conticaster and reorganize production, easy installation and removal, fixed support is also to be responsible for 12 into water simultaneously, and self can carry out cold But, it is unlikely to deform.
Further, water inlet supervisor 12 is divided into multiple segmentation along casting stream 11 arc directions, and it is upper and lower that 12 segmentations are responsible in each water inlet Two ends are provided with water inlet 15.Step-by-step arrangement, when a certain segmentation goes wrong, it is simple to single split pull down maintenance or more Change, whole mechanism all need not be pulled down or change.Each is segmented into a spray district, and each district uses upper and lower water inlet 15 same The mode of Shi Tongshui, it is to avoid cool down lower skewness waterborne.
The most as shown in Figure 4, spraying mechanism is nozzle ring group 13, and nozzle ring group 13 place plane is vertical with casting stream 11, Nozzle ring group 13 flows to by close to dilute distribution along strand, and casting stream 11 is passed by the middle of nozzle ring group 13, and nozzle ring group 13 is pacified Equipped with multiple nozzles 133, nozzle ring group 13 is in eight-sided formation, including the 4 root length pipes 131 alternately connected and 4 short tubes 122, The two root length pipes 131 near inner arc side are connected with water inlet supervisor 12 by the connecting tube 14 of Y type, 14 points of two passes of connecting tube and Long tube 131 connects, and to ensure water outlet uniformity, nozzle 133 is arranged on short tube 122, described short tube 122 and the folder of long tube 131 Angle is 120 °.
As it is shown in figure 5, nozzle ring group can also be made up of 8 isometric jet pipes 134, form octagon structure, connect Pipe 14 is similarly Y type, and a point two-way is connected with jet pipe 134, and on nozzle 133 four jet pipes 134 installed therein, interval is arranged, phase The angle of adjacent jet pipe 134 is 120 °.
Further, for the ease of the installation and removal of nozzle ring group 13, nozzle 133 is threadeded with nozzle ring group 13, Connecting tube 14 and water inlet supervisor 12 and nozzle ring group 13 grafting.Described grafting can use the side that conventional pin and box sub is docked Formula, simple in construction, nozzle ring group 13 is easily installed and dismantles, and assembly globality, integration degree are high, it is achieved that nozzle 133 Quick-replaceable.The aperture of nozzle 133 is more than or equal to 2mm.Being suitable for water quality scope wide, be not easily blocked, nozzle 133 atomizing effect is good, Jet velocity is fast.
Above-mentioned spray equipment farthest improves the operating rate of billet caster, and slab cooling is uniform, improves casting Base quality;Avoid the tradition square billet two cold water spray up-small and down-big uneven problem of bar top nozzle injection flow rate and bleed-out accident to spray The problem that pouring system causes damage;Simple in construction, nozzle ring group 13 easy accessibility, fast, and accurate positioning, dimension can be greatly saved Repair the time, improve the labor intensity of maintenance operation personnel;Fixed support and water inlet supervisor 12 are fixed on inner arc side, the most variable Shape, not by bleed-out accident impact, the life-span increases.Fixed support carries water-cooled and is unlikely to deform, and the life-span is long.There is provided for square billet height pulling rate Ensure, it is achieved that the efficiently purpose of high yield.
Present invention simultaneously provides a kind of wire and rod continuous casting billet to exempt to heat straight rolling method, use above-mentioned a kind of wire and rod continuous casting Base is exempted to heat and is directly rolled system, and the strand that conticaster is produced is delivered to strand stream by roller-way after cutting 3 after fast hydraulic pressure cuts 2 cuttings Converging roller-way, strand stream converges roller-way and cuts and arrange gate mechanism 4 between rear roller-way 3, enters according to the sequencing that strand arrives Row is let pass, and strand converges roller-way through strand stream, and converging to transporting hot send roller-way at a high speed, and is sent roller-way by strand single current by transporting hot Be fed rapidly into milling train and carry out exempting from heating rolling.
Described minor radius high casting speed continuous casting machine 1 radius is 6m-9m;Being equipped with high pulling rate crystallizer, pulling rate is more than 3.5m/min; Before controlling strand cutting by conticaster secondary cooling system, temperature is more than 980 DEG C, and the high temperature strand after shearing is through converging at a high speed Poly-and conveying is delivered in the steel rolling operation of rolling, and temperature loss controls in the range of less than 50 DEG C.By high pulling rate and high speed roller-way Shorten time of delivery, reduce temperature drop;Strand after ejection roller way many carry in groups, it is also possible to reduce temperature loss, protect Card rolling quality.
Compared with prior art, the present invention has a techniques below advantage:
1, minor radius high casting speed continuous casting machine high efficiency continuous casting, casting speed is fast, and strand pull-out temperature is high, and shape is regular, temperature Losing little, strand is cut off quickly, and strand initial temperature is high.
2, cut off strand and enter high speed strand stream convergence roller-way the most in order, easy and simple to handle, easily organize production.
3, strand is high to inlet of rolling mill temperature, can exempt to heat Direct Rolling, little to milling train damage.
Above-described embodiment all can be carried out by any person skilled in the art under the spirit and the scope of the present invention Modify or change.Therefore, such as art has usually intellectual without departing from disclosed spirit with All equivalences completed under technological thought are modified or change, and must be contained by the claim of the present invention.

Claims (10)

1. a wire and rod continuous casting billet is exempted to heat and is directly rolled system, it is characterised in that: the conticaster that includes closely arranging successively, quickly Hydraulic shear, cut rear roller-way, strand stream converges roller-way, transporting hot and send roller-way and wire and bar mill;Described strand stream converges roller-way will Strand on the most first-class converges to transporting hot and send on roller-way.
A kind of wire and rod continuous casting billet the most according to claim 1 is exempted to heat and is directly rolled system, it is characterised in that: described strand stream Converging roller-way is the narrow horn-like shape in width downstream, upstream.
A kind of wire and rod continuous casting billet the most according to claim 1 is exempted to heat and is directly rolled system, it is characterised in that cut back roller described in: Road and strand stream converge and are provided with between roller-way for stopping the gate mechanism that strand enters and lets pass.
A kind of wire and rod continuous casting billet the most according to claim 3 is exempted to heat and is directly rolled system, it is characterised in that: described gate machine Structure is the adjustable end stop using hydraulic pressure or air pressure to drive.
A kind of wire and rod continuous casting billet the most according to claim 1 is exempted to heat and is directly rolled system, it is characterised in that: described conticaster Radius is 6m-9m.
A kind of wire and rod continuous casting billet the most according to claim 1 is exempted to heat and is directly rolled system, it is characterised in that: described conticaster Pulling rate is more than 3.5m/min;Described cut rear roller-way, transporting hot send roller-way to be frequency conversion roller-way.
A kind of wire and rod continuous casting billet the most according to claim 1 is exempted to heat and is directly rolled system, it is characterised in that: described conticaster On be provided with cooling twice spray equipment, including spraying mechanism and as support bracket fastened water inlet supervisor, described water inlet supervisor Being positioned at the inner arc side of casting stream, described spraying mechanism is arranged on water supervisor, and connects with water inlet supervisor;Described water inlet supervisor edge Casting stream arc direction is divided into multiple segmentation, each upper and lower two ends of described segmentation to be provided with water inlet.
A kind of wire and rod continuous casting billet the most according to claim 7 is exempted to heat and is directly rolled system, it is characterised in that: described spray thrower Structure is nozzle ring group, and described nozzle ring group place plane is vertical with casting stream, and casting stream is passed by the middle of nozzle ring group, nozzle ring group On multiple nozzle is installed, described nozzle ring group is eight-sided formation, and described nozzle pitch is arranged on jet pipe, described jet pipe lead to Cross connecting tube to be connected with water inlet supervisor.
9. wire and rod continuous casting billet exempts to heat a straight rolling method, uses a kind of wire and rod described in claim 1-8 any one Continuous casting billet is exempted to heat and is directly rolled system, it is characterised in that: the strand that conticaster is produced after rapid hydraulic cutting cuts by cutting after Roller-way is delivered to strand stream and is converged roller-way, and strand stream converges roller-way and cuts and arrange gate mechanism between rear roller-way, arrives according to strand Sequencing let pass, strand converges roller-way through strand stream and at a high speed converges to transporting hot and send roller-way, and is sent roller by transporting hot Strand single current is fed rapidly into milling train and carries out exempting from heating rolling by road.
A kind of wire and rod continuous casting billet the most according to claim 9 exempts to heat straight rolling method, it is characterised in that: described continuous casting Machine radius is 6m-9m;Pulling rate is more than 3.5m/min;Before controlling strand cutting by conticaster secondary cooling system, temperature is more than 980 DEG C, the high temperature strand after shearing is delivered in the steel rolling operation of rolling through convergence and conveying at a high speed, and temperature loss controls be less than In the range of 50 DEG C.
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CN107497852A (en) * 2017-09-30 2017-12-22 四川德胜集团钒钛有限公司 A kind of steel exempt from heating rolling system and method
CN107671120A (en) * 2017-09-29 2018-02-09 四川德胜集团钒钛有限公司 A kind of continuous casting and rolling production line
CN107695100A (en) * 2017-09-29 2018-02-16 四川德胜集团钒钛有限公司 A kind of steel exempt from heating and directly roll system and method
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CN109158565A (en) * 2018-10-15 2019-01-08 中冶华天工程技术有限公司 A kind of continuous casting billet is quickly heat-fed process and device
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CN109158565A (en) * 2018-10-15 2019-01-08 中冶华天工程技术有限公司 A kind of continuous casting billet is quickly heat-fed process and device
CN110421002A (en) * 2019-07-08 2019-11-08 江苏煌明能源科技有限公司 Bar Wire Product is without heating furnace continuous casting direct-rolling process

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