CN105107842B - The method and its device of a kind of reduction rolling laminating production slab and special heavy plate - Google Patents
The method and its device of a kind of reduction rolling laminating production slab and special heavy plate Download PDFInfo
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- CN105107842B CN105107842B CN201510589253.1A CN201510589253A CN105107842B CN 105107842 B CN105107842 B CN 105107842B CN 201510589253 A CN201510589253 A CN 201510589253A CN 105107842 B CN105107842 B CN 105107842B
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Abstract
The invention discloses a kind of reduction rolling laminating production slab and the method and its device of special heavy plate, can high efficiency, produce high-quality slab and special heavy plate material at low cost.The step of the method, includes：Heating steel billet and de-scaling；Iron oxide on surface of billet steel skin is reduced；The positioning of steel billet and combination；The Rolling compund of steel billet；The multi- pass rolling of composite steel billet.The device that the method is used includes：Entrance, seal section body of heater, reduction section body of heater, combined segment body of heater and Rolling compund section.The present invention utilizes two or more than two continuous casting billet or rolled blank after high temperature reduction and stack combinations by milling train Direct Rolling laminating production slab and special heavy plate, compared with the method for existing use static ingot, electroslag remelting steel ingot and vacuum rolling laminating production slab and special heavy plate, oxidization burning loss is few, simply, compression ratio is big for surface treatment and blank combination, to that can produce special heavy plate after existing plate production line simply transformation, improvement cost is low, energy-conserving and environment-protective, production efficiency is high, good product quality.
Description
Technical field
The invention belongs to the steel plate production field of metallurgy industry, more particularly to a kind of reduction rolling laminating production slab
With the method and its device of special heavy plate.
In steel industry, the steel plate that thickness is in 25mm-100mm is typically referred to as slab, the steel by thickness more than 100mm
Plate is referred to as special heavy plate.Slab and special heavy plate be usually used in atomic power station, offshore platform, Turbo-generator Set, warship and
The specific uses such as armour plate, the large mold steel of tank, are a kind of quality requirement is higher, added value is higher products, with very
The big market demand and application prospect.In slab and special heavy plate production process, in order to ensure the internal soundness of sheet material, usually require that
Compression ratio higher, compression ratio is typically no less than 6.Meanwhile, compression ratio is higher, and sheet material internal soundness is better.Due to finished product sheet material
Thickness is thicker, and internal soundness requirement is higher, and the thickness of big compression ratio inevitable requirement material base is also larger.At present, produce high-quality
Slab and the raw materials used slab of special heavy plate mainly use static ingot and electroslag remelting steel ingot.Slab and spy are produced using die casting
Used by slab during ingot blank, because the sectional dimension of ingot casting is larger, setting rate slows down, and causes ingot blank internal segregation serious, becomes a useful person
Rate is relatively low.Slab is produced and used by special heavy plate during ingot blank using electroslag remelting process, ingot composition is organized and also compare cause than more uniform
It is close, but there is the shortcomings of low production efficiency, power consumption are high, production cost is high in the technique.Patent document CN101773931A (one
The method of kind of rolling special thick board by means of vacuum compositing), CN101439348A (a kind of process for producing special heavy plate) and
CN101590596A (a kind of method of manufacturing extra-thick plate blank by accumulative roller welding process) etc. describes one kind under vacuum conditions
The method that heating rolling produces special heavy plate is carried out after compound base again, compared with static ingot, these methods solve big pattern
The defect such as the segregation of caststeel ingot center portion and tissue looseness, compared with electroslag remelting steel ingot, these methods improve production technology yield,
Reduce power consumption, reduce equipment investment, but these methods there is also blank surface treatment and assembly welding procedure is cumbersome, group
The shortcomings of time that the blank of conjunction is heated to rolling temperature from normal temperature is oversize, energy consumption is higher, oxidization burning loss is more.
The content of the invention
The invention provides a kind of reduction rolling laminating production slab and the method and its device of special heavy plate, can be efficient
Rate, high-quality slab and special heavy plate material are produced at low cost.
A kind of reduction rolling laminating production slab and the method for special heavy plate that the present invention is provided are comprised the following steps：
A. heating steel billet and de-scaling：With common continuous casting steel billet or hot rolling steel billet as raw material, steel billet is placed in conventional rolling
950 DEG C~1350 DEG C are heated to according to conventional heating technique in steel heater, the steel billet of heating utilizes conventional height after coming out of the stove
Pressure water descaling device removes billet surface because adding thermogenetic iron scale；
B. iron oxide on surface of billet steel skin reduction：It is transported in reduction section body of heater by the steel billet after high-pressure water descaling,
Reducibility gas are passed through in reduction section body of heater, by the reduction reaction of 1~30min, the secondary iron scale quilt of billet surface
Reducibility gas are reduced into metallic iron；
C. the positioning of steel billet and combination：Scale on surface is reduced into the steel billet conveying of metallic iron to full of inert gas
Combined segment body of heater in, in combined segment body of heater, after using roller-way, first piece of steel billet conveying to the position specified is positioned, by steel
Base holds up frame and clamps steel billet, and steel billet is held up, and is placed in the top of conveyor roller, and now, second block of steel billet is transported to picking-up
First block of steel billet immediately below, hold up frame and fall with first block of steel billet lifting up, fall on second block of steel billet, with second
Block steel billet is stacked together, and completes positioning and the combination of two blocks of steel billets, according to said method can be by the 3rd piece and more than three pieces
Steel billet be stacked together；
D. the Rolling compund of steel billet：Two pieces combined or three or more steel billet conveying go out to combined segment body of heater
Mouthful position, adjustment mill roll-gap to suitable degree will combine steel billet and be introduced directly into mill roll-gap and be rolled using guide and guards
System pressing；
E. the multi- pass rolling of composite steel billet：Combination steel billet just can tentatively be combined with each other after Rolling compund, form multiple
Steel billet is closed, to eliminate compound interface, interface bond strength is further improved, composite steel billet is formed a complete entirety, then
Conventional multi-pass controlled rolling is carried out to composite steel billet using milling train, untill satisfactory thickness and performance is reached.
The device that a kind of method of reduction rolling laminating production slab and special heavy plate is used, the device includes：It is entrance, close
Envelope section body of heater, reduction section body of heater, combined segment body of heater and Rolling compund section, described entrance in original position, followed by close
Envelope section body of heater, centre is reduction section body of heater, is combined segment body of heater after reduction section body of heater, is finally Rolling compund section, each section it
Between be tightly connected using connecting bolt；Between described seal section body of heater and reduction section body of heater using seal section baffle plate (10) every
Open, separated using reduction section baffle plate (15) between reduction section body of heater and combined segment body of heater；Described entrance is by guide roll (2)
Mouth (3) composition is led with inlet seal, steel billet (1) importing inlet seal is led mouth (3) by guide roll (2), and is coordinated with steel billet (1)
Inert gas in seal section body of heater is sealed；Described seal section body of heater is by conveyor roller in seal section furnace shell (7), stove
(8), seal section inert gas entrance (9), heat-insulation layer (5), heating element heater (6) and seal section baffle plate (10) composition, seal section stove
The reducibility gas of reduction section furnace interior are intercepted and sealed by internal portion's filling inert gas, and seal section furnace shell (7) is adopted
Welded with steel plate and be made, heat-insulation layer (5) is done in inside using refractory material, and seal section inert gas entrance (9) is arranged on seal section
Furnace shell (7) top, conveyor roller (8) is arranged in seal section body of heater in heating element heater (6) and stove, heating element heater (6) control stove
Bore temperature, conveyor roller (8) completes transport of the steel billet (1) in body of heater in stove, between seal section body of heater and reduction section body of heater
The opening of seal section baffle plate (10) is identical with steel billet (1) cross dimensions, and seal section baffle plate (10) coordinates obstruct reduction with steel billet (1)
By seal section body of heater, seal section body of heater length is 2-30 meters to gas in section body of heater, is highly 0.05-3.0 meters, seal section stove
Body is closely connected between leading mouth (3) with inlet seal using connecting bolt；Described reduction section body of heater by reduction section furnace shell (12),
Conveyor roller (8), reduction in reducing gas entrance (14), reducing gas outlet (11), heat-insulation layer (5), heating element heater (6), stove
Section baffle plate (15) and temperature element (13) composition, reduction section furnace interior is full of reducibility gas, by the oxidation on steel billet (1) surface
Iron sheet is reduced into metallic iron, and the temperature in reduction section body of heater is controlled by heating element heater (6), and traveling of the steel billet in body of heater is by stove
Conveyor roller (8) is controlled, and reduction section furnace shell (12) is made of steel plate welding, and heat-insulation layer (5) is done in inside using refractory material, also
Raw-gas entrance (14) is arranged on reduction section furnace shell top, and reducing gas outlet (11) is arranged on reduction section furnace shell bottom, reduces
Property gas entered by reducing gas entrance (14), discharged by reducing gas outlet (11), reduction section body of heater and combined segment body of heater it
Between reduction section baffle plate (15) opening it is identical with steel billet (1) cross dimensions, reduction section baffle plate (15) and steel billet (1) coordinate and intercept
By combined segment body of heater, reduction section body of heater length is 5-100 meters to gas in reduction section body of heater, is highly 0.05-3.0 meters, also
Closely connected using connecting bolt between former section body of heater and seal section body of heater；Described combined segment body of heater is by combined segment furnace shell
(16), chuck (17), leading screw (18), combined segment inert gas entrance (19), hydraulic cylinder (20), dovetail groove (21), push rod (22),
Locating rod (23), heat-insulation layer (5), heating element heater (6) and conveyor roller (8) composition in stove, combined segment furnace interior filling inertia
Gas, the temperature in combined segment body of heater is controlled by heating element heater (6), and traveling of the steel billet in body of heater is by conveyor roller in stove (8)
Control, combined segment furnace shell (16) is made of steel plate welding, and heat-insulation layer (5) is done in inside using refractory material, and locating rod (23) sets
Put in combined segment lower portion of furnace body, conveyor roller (8) plane in the protrusion stove of locating rod (23) upper end prevents steel billet from travelling forward, right
Steel billet (1) head is positioned, and when locating rod (23) upper end is returned to below conveyor roller in stove (8) plane, then allows group
Steel billet (1) after conjunction runs forward；Described leading screw (18) turns clockwise, and makes the end of push rod (22) interior in dovetail groove (21)
Slide in opposition, drives chuck (17) to clamp the side of steel billet (1), and makes steel billet (1) automatic centering, and hydraulic cylinder (20) is transported upwards
It is dynamic, promote dovetail groove (21) to be moved upwardly together together with push rod (22), chuck (17) and steel billet (1), next piece of steel billet (1) passes through
Conveyor roller (8) is transported to the steel billet (1) for lifting up below in stove, and located bar (23) is to head positioning, now, hydraulic cylinder (20)
Decline, the steel billet (1) for lifting up falls on next piece of steel billet (1), leading screw (18) rotates counterclockwise, chuck (17) decontrols steel billet
(1) stack combinations and head and the edge alignment of two pieces of steel billets (1), are completed, inert gas is from combined segment inert gas entrance
(19) enter in combined segment body of heater, prevent steel billet (1) surface after combination from aoxidizing again, and enter promoting the circulation of qi to reduction section body of heater
Body is sealed, and combined segment body of heater length is 2-50 meters, is highly 0.1-8.0 meters, is used between combined segment body of heater and reduction section body of heater
Connecting bolt is closely connected；Described Rolling compund section leads mouth (24) by exit seal and milling train (25) is constituted, and exit seal is led
It is tightly connected using connecting bolt between mouth (24) and combined segment body of heater, exit seal is led mouth (24) outlet and is close to milling train (25)
Working roll on, the inert gas in combined segment body of heater is sealed, and by combine steel billet (1) correctly derive body of heater, lead
Enter the roll gap of milling train (25), exit seal is led mouth (24) and uses heat-resisting steel making, and milling train (25) is identical with the heavy plate mill of routine,
But larger opening degree and larger single pass rolling reduction is needed, effect is that combination billet rolling is combined with each other.
The prominent substantive distinguishing features of the present invention and marked improvement are mainly reflected in：
(1) compared with the method for existing use static ingot Rolling Production special heavy plate, the steel billet that the present invention is used is to connect
Strand or rolled blank, internal soundness are better than static ingot, and lumber recovery and production efficiency are above static ingot, and production cost is less than
Static ingot；
(2) compared with the method for existing vacuum assembly Rolling compund production special heavy plate, the present invention is in assembly Rolling compund
Before, the heating of steel billet is completed in common flame furnace according to existing heating technique, and is monolithic Double-side Heating, plus
Thermal velocity is higher than the polylith blank after vacuum assembly, therefore, the efficiency of heating surface is high, and oxidization burning loss is few, and heating quality is good, it is possible to achieve
High temperature shove charge, is easy to energy-saving；
(3) compared with the method for existing vacuum assembly Rolling compund production special heavy plate, the present invention is in treatment billet surface
During iron scale, thermogenetic once oxidation iron sheet will be added to destroy first with existing conventional water under high pressure, then recycled also
Originality gas by the secondary scale reduction of billet surface, therefore, the present invention treatment iron oxide on surface of billet steel skin technique letter
It is single quick, without dust and noise pollution, it is not necessary to which special surface polishing and cleaning equipment, production efficiency are high, energy-conserving and environment-protective, table
Face not entrapped contaminants, compound interface is clean, and interface bond strength is improved, meanwhile, recovery rate of iron is improved, and is reduced and is produced into
This；
(4) compared with the method for existing vacuum assembly Rolling compund production special heavy plate, the present invention is in blank stack combinations
Process can realize the combination of two pieces and more than two pieces of polylith blank, therefore, fundamentally solve continuous casting billet production slab
The inadequate problem of compression ratio, it is possible to use thinner continuous casting billet production slab and special heavy plate, has refined the tissue inside sheet material, carries
The uniformity of sheet material interior tissue high, improves product quality；
(5) compared with the method for existing use static ingot Rolling Production special heavy plate, the present invention is in blank stack combinations
During can realize two pieces and more than two pieces polylith blank combination, it is possible to use thinner bloom production slab and spy are thick
Plate, when being inherently eliminated thick static ingot production special heavy plate compression ratio not enough, component segregation and the problems such as internal defect,
Sheet material internal segregation problem is eliminated, the uniformity of sheet material interior tissue is improve, product quality is improve；
(6) compared with the method that existing use electroslag remelting steel ingot carries out Rolling Production special heavy plate again, the present invention is adopted
Process is lower than traditional electroslag remelting production technology efficiency high, power consumption, low production cost, and lumber recovery is high；
(7) slab of the present invention is to utilize common flame stove heat out, and rolling equipment sets with existing
It is standby essentially identical, meet production requirement by reduction combination unit need to be only set up on the basis of existing equipment, therefore, institute of the present invention
The technical scheme of proposition produces special heavy plate after being particularly suitable for existing hot rolling line transformation；
(8) Rolling compund process is pressed by the powerful rolling of milling train, and continuing with several passages below
Rolling, the total deformation of composite plate blanks is big, and the atoms permeating effect between interface under machinery press-in and high temperature is significantly increased, therefore
Compound interface, improve product quality can be eliminated.
Brief description of the drawings
Fig. 1 is a kind of apparatus structure schematic diagram of the method use of reduction rolling laminating production slab and special heavy plate.
Fig. 2 be a kind of reduction rolling laminating production slab and special heavy plate the device that uses of method in combined segment body of heater steel billet
Lift up the A-A sectional views of position.
The implication of each mark is as follows in figure：
1 steel billet；2 guide rolls；3 inlet seals lead mouth；4 connecting bolts；5 heat-insulation layers；6 heating element heaters；7 seal section stoves
Shell；The defeated roller-way of operation in 8 stoves；9 seal section inert gas entrances；10 seal section baffle plates；11 reducing gas are exported；12 reduction section stoves
Shell；13 temperature elements；14 reducing gas entrances；15 reduction section baffle plates；16 combined segment furnace shells；17 chucks；18. leading screws；19 combinations
Section inert gas entrance；20 hydraulic cylinders；21 dovetail grooves；22 push rods；23 locating rods；24 exit seals lead mouth；25 milling trains.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, a kind of method and its device of reduction rolling laminating production slab and special heavy plate, is rolled with reducing
Specific embodiment of the invention is illustrated as a example by the special heavy plate of the compound 16Mn (5 tons) for preparing 100*2000*3200mm of system.
5 pieces of the continuous casting billet that size is 170mm*1600mm*2000mm is taken, 1180 DEG C, profit are heated to using common flame furnace
The stove for removing billet surface with water under high pressure gives birth to iron scale, then, steel billet 1 is pinched by guide roll 2, is led by inlet seal
Mouth 3 enters in seal section body of heater, and furnace temperature is heated to 1200 DEG C by the heating element heater 6 in seal section body of heater, and nitrogen passes through seal section
Inert gas entrance 9 is filled with seal section body of heater, by the air discharge in whole burner hearth；Steel billet 1 is transported by conveyor roller 8 in stove
Deliver in reduction section body of heater, furnace temperature is heated to 1200 DEG C by the heating element heater 6 in reduction section body of heater, and reducing gas hydrogen is by reducing
Gas access 14 is filled with reduction section body of heater, is blown on the surface of steel billet 1, by the secondary scale reduction Cheng Jin on the surface of steel billet 1
Category iron, the steam after reduction reaction discharges reduction section body of heater from reducing gas outlet 11；Steel billet 1 stops 1- in reduction section body of heater
It is transported to after 30min in combined segment body of heater, furnace temperature is heated to 1200 DEG C, indifferent gas by the heating element heater 6 in combined segment body of heater
Body argon gas is filled with combined segment body of heater by combined segment inert gas entrance 19, prevents the surface re-oxidation of steel billet 1 after reduction, fixed
Position bar 23 rises, and upper end exceedes the roll surface of conveyor roller 8 in stove, and head contact is to stopping after locating rod 23 when steel billet 1 runs forward
Only, leading screw 18 turns clockwise, and makes the end of push rod 22 slide in opposition in dovetail groove 21, drives chuck 17 to clamp steel billet 1
Side, makes the automatic centering of steel billet 1, and now, hydraulic cylinder 20 is moved upwards, promotes dovetail groove 21 together with push rod 22, chuck 17 and steel
Base 1 is moved upwardly together, and second block of steel billet 1 is transported to below the steel billet 1 for lifting up by conveyor roller 8 in stove, located bar 23
To head positioning, now, hydraulic cylinder 20 declines, and the steel billet 1 for lifting up falls on second block of steel billet, and leading screw 18 revolves counterclockwise
Turn, chuck 17 decontrols steel billet 1, the stack combinations and head of two blocks of steel billets of completion and edge alignment, repeats above-mentioned action by the 3rd
Block, the 4th piece and the 5th block of steel billet are stacked together；The five blocks of steel billets for combining are transported to combined segment body of heater outlet position
Put, the roll gap of milling train 25 is adjusted to 680mm (drafts of the first passage is controlled between 120-250mm), by exit seal
Lead mouth 24 and will combine steel billet and be introduced directly into milling train 25 and carry out rolling pressing；By first compound steel billet recycle milling train continue into
Row transverse rolling and axial rolling deform, and untill the finished product thickness 100mm and width 2000mm for reaching requirement, then are cut by multiple length and are
The special heavy plate that finished product is 100*2000*3200mm can be obtained.
Above-mentioned specific embodiment shows, can be using two or more than two continuous casting billet through height by this method and device
By milling train Direct Rolling laminating production slab and special heavy plate after temperature reduction and stack combinations, with existing use static ingot, electricity
Slag remelted ingot is compared with vacuum rolling laminating production slab with the method for special heavy plate, and oxidization burning loss of the present invention is few, surface treatment
And blank combination is simply, compression ratio is big, and to that can produce special heavy plate after existing plate production line simply transformation, improvement cost is low,
Energy-conserving and environment-protective, production efficiency is high, good product quality.It should be noted that embodiment is only some of the inventive method and device
Exemplary applications, it is impossible to be interpreted as the limitation to the claims in the present invention protection domain.
Claims (1)
1. a kind of method of reduction rolling laminating production slab and special heavy plate, the method is comprised the following steps：
A. heating steel billet and de-scaling：With common continuous casting steel billet or hot rolling steel billet as raw material, steel billet is placed in conventional steel rolling and is added
950 DEG C -1350 DEG C are heated to according to conventional heating technique in hot stove, the steel billet of heating is removed after coming out of the stove using conventional water under high pressure
Squama device removes billet surface because adding thermogenetic iron scale；
B. iron oxide on surface of billet steel skin reduction：It is transported in reduction section body of heater by the steel billet after high-pressure water descaling, also
Reducibility gas are passed through in former section body of heater, by the reduction reaction of 1~30min, the secondary iron scale of billet surface is reduced
Property gas reduction is into metallic iron；
C. the positioning of steel billet and combination：Scale on surface is reduced into the steel billet conveying of metallic iron to the group full of inert gas
Close in section body of heater, in combined segment body of heater, after using roller-way, first piece of steel billet conveying is positioned to the position specified, by steel billet support
Play frame and clamp steel billet, and steel billet is held up, be placed in the top of conveyor roller, now, second block of steel billet is transported to the of picking-up
Immediately below one block of steel billet, hold up frame and fall with the first block of steel billet for lifting up, fall on second block of steel billet, with second block of steel
Base is stacked together, and completes positioning and the combination of two blocks of steel billets, according to said method can be by the 3rd piece and more than three pieces of steel
Base is stacked together；
D. the Rolling compund of steel billet：Two pieces combined or more than three pieces of steel billet conveying is adjusted to combined segment body of heater outlet port
Whole mill roll-gap will combine steel billet and be introduced directly into mill roll-gap and carry out rolling pressing to suitable degree, using guide and guards；
E. the multi- pass rolling of composite steel billet：Combination steel billet just can tentatively be combined with each other after Rolling compund, form clad steel
Base, to eliminate compound interface, further improves interface bond strength, composite steel billet is formed a complete entirety, recycles
Milling train carries out conventional multi-pass controlled rolling to composite steel billet, untill satisfactory thickness and performance is reached；
The device of the method use of reduction rolling laminating production slab and special heavy plate is realized, it is characterized in that, the device includes：Entrance
Section, seal section body of heater, reduction section body of heater, combined segment body of heater and Rolling compund section, described entrance in original position, and then
Be seal section body of heater, it after reduction section body of heater, reduction section body of heater is combined segment body of heater that centre is, is finally Rolling compund section,
It is tightly connected using connecting bolt between each section；Seal section baffle plate is used between described seal section body of heater and reduction section body of heater
(10) separate, separated using reduction section baffle plate (15) between reduction section body of heater and combined segment body of heater；Described entrance is by entrance
Deflector roll (2) and inlet seal lead mouth (3) composition, and steel billet (1) importing inlet seal is led mouth (3), and and steel billet by guide roll (2)
(1) coordinate and the inert gas in seal section body of heater is sealed；Described seal section body of heater is by seal section furnace shell (7), stove
Conveyor roller (8), seal section inert gas entrance (9), heat-insulation layer (5), heating element heater (6) and seal section baffle plate (10) composition,
Seal section furnace interior fills inert gas, and the reducibility gas of reduction section furnace interior are intercepted and sealed, seal section
Furnace shell (7) is made of steel plate welding, and heat-insulation layer (5) is done in inside using refractory material, and seal section inert gas entrance (9) is set
On seal section furnace shell (7) top, conveyor roller (8) is arranged in seal section body of heater in heating element heater (6) and stove, heating element heater
(6) fire box temperature is controlled, conveyor roller (8) completes transport of the steel billet (1) in body of heater, seal section body of heater and reduction section stove in stove
The opening of the seal section baffle plate (10) between body is identical with steel billet (1) cross dimensions, and seal section baffle plate (10) coordinates with steel billet (1)
The gas in reduction section body of heater is intercepted by seal section body of heater, seal section body of heater length is 2-30 meters, is highly 0.05-3.0 meters,
Seal section body of heater is closely connected between leading mouth (3) with inlet seal using connecting bolt；Described reduction section body of heater is by reduction section
Conveyor roller in furnace shell (12), reducing gas entrance (14), reducing gas outlet (11), heat-insulation layer (5), heating element heater (6), stove
(8), reduction section baffle plate (15) and temperature element (13) are constituted, and reduction section furnace interior is full of reducibility gas, by steel billet (1) table
The scale reduction in face is controlled into metallic iron, the temperature in reduction section body of heater by heating element heater (6), steel billet walking in body of heater
Row is controlled by conveyor roller in stove (8), and reduction section furnace shell (12) is made of steel plate welding, and inside is incubated using refractory material
Layer (5), reducing gas entrance (14) is arranged on reduction section furnace shell top, and reducing gas outlet (11) is arranged under reduction section furnace shell
Portion, reducibility gas are entered by reducing gas entrance (14), and (11) discharge, reduction section body of heater and combined segment are exported by reducing gas
The opening of the reduction section baffle plate (15) between body of heater is identical with steel billet (1) cross dimensions, and reduction section baffle plate (15) is matched somebody with somebody with steel billet (1)
The gas intercepted in reduction section body of heater is closed by combined segment body of heater, reduction section body of heater length is 5-100 meters, is highly 0.05-3.0
Rice, is closely connected between reduction section body of heater and seal section body of heater using connecting bolt；Described combined segment body of heater is by combined segment stove
Shell (16), chuck (17), leading screw (18), combined segment inert gas entrance (19), hydraulic cylinder (20), dovetail groove (21), push rod
(22), locating rod (23), heat-insulation layer (5), heating element heater (6) and conveyor roller (8) composition in stove, the filling of combined segment furnace interior
Inert gas, the temperature in combined segment body of heater is controlled by heating element heater (6), and traveling of the steel billet in body of heater is by conveyor roller in stove
(8) control, combined segment furnace shell (16) is made of steel plate welding, and heat-insulation layer (5), locating rod (23) are done in inside using refractory material
Combined segment lower portion of furnace body is arranged on, conveyor roller (8) plane in the protrusion stove of locating rod (23) upper end prevents steel billet from travelling forward,
Steel billet (1) head is positioned, when locating rod (23) upper end is returned to below conveyor roller in stove (8) plane, is then allowed
Steel billet (1) after combination runs forward, when leading screw (18) turns clockwise, makes the end of push rod (22) in dovetail groove (21) interior phase
To slip, drive chuck (17) to clamp the side of steel billet (1), and make steel billet (1) automatic centering, hydraulic cylinder (20) is moved upwards,
Dovetail groove (21) is promoted to be moved upwardly together together with push rod (22), chuck (17) and steel billet (1), next piece of steel billet (1) is by stove
Interior conveyor roller (8) is transported to the steel billet (1) for lifting up below, located bar (23) to head positioning, now, under hydraulic cylinder (20)
Drop, the steel billet (1) for lifting up falls on next piece of steel billet (1), and when leading screw (18) rotates counterclockwise, chuck (17) decontrols steel billet
(1) stack combinations and head and the edge alignment of two pieces of steel billets (1), are completed, inert gas is from combined segment inert gas entrance
(19) enter in combined segment body of heater, air seal is carried out to reduction section body of heater, combined segment body of heater length is 2-50 meters, is highly
0.1-8.0 meters, closely connected using connecting bolt between combined segment body of heater and reduction section body of heater；Described Rolling compund section is by going out
Mouth (24) and milling train (25) composition are led in mouth sealing, and exit seal is led and sealed using connecting bolt between mouth (24) and combined segment body of heater
Connection, exit seal is led mouth (24) outlet and is close on the working roll of milling train (25), and the inert gas in combined segment body of heater is entered
Row sealing, and the steel billet (1) that will be combined derives body of heater, imports the roll gap of milling train (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510589253.1A CN105107842B (en) | 2015-09-15 | 2015-09-15 | The method and its device of a kind of reduction rolling laminating production slab and special heavy plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510589253.1A CN105107842B (en) | 2015-09-15 | 2015-09-15 | The method and its device of a kind of reduction rolling laminating production slab and special heavy plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105107842A CN105107842A (en) | 2015-12-02 |
| CN105107842B true CN105107842B (en) | 2017-05-31 |
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| CN201510589253.1A Expired - Fee Related CN105107842B (en) | 2015-09-15 | 2015-09-15 | The method and its device of a kind of reduction rolling laminating production slab and special heavy plate |
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| JPS61103603A (en) * | 1984-10-24 | 1986-05-22 | Kawasaki Steel Corp | Manufacture of thick steel plate having plural step differences in thickness |
| JP4830612B2 (en) * | 2006-04-28 | 2011-12-07 | 住友金属工業株式会社 | Continuous casting method for slabs for extra heavy steel plates |
| CN101812640B (en) * | 2009-02-23 | 2011-11-23 | 宝山钢铁股份有限公司 | In-situ composite high-strength thick steel plate and manufacturing method thereof |
| CN101773931B (en) * | 2009-12-30 | 2011-07-13 | 东北大学 | Method for rolling special thick board by means of vacuum compositing |
| CN101736204B (en) * | 2010-01-21 | 2012-05-23 | 山西太钢不锈钢股份有限公司 | High-strength atmospheric corrosion-resistant medium plate and manufacturing method thereof |
| CN102310077B (en) * | 2010-06-30 | 2013-07-17 | 辽宁科技大学 | Method for continuously reducing, rolling and compositing stainless steel/plain steel composite plate and device thereof |
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