CN101160183B - Process and installation for producing a lightweight structural steel with a high manganese content - Google Patents
Process and installation for producing a lightweight structural steel with a high manganese content Download PDFInfo
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- CN101160183B CN101160183B CN2006800071903A CN200680007190A CN101160183B CN 101160183 B CN101160183 B CN 101160183B CN 2006800071903 A CN2006800071903 A CN 2006800071903A CN 200680007190 A CN200680007190 A CN 200680007190A CN 101160183 B CN101160183 B CN 101160183B
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- 239000011572 manganese Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 22
- 229910000746 Structural steel Inorganic materials 0.000 title claims abstract description 18
- 229910052748 manganese Inorganic materials 0.000 title claims abstract description 15
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 title claims abstract description 7
- 238000009434 installation Methods 0.000 title description 3
- 238000005266 casting Methods 0.000 claims abstract description 52
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 28
- 239000010959 steel Substances 0.000 claims abstract description 28
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 19
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 11
- 239000004411 aluminium Substances 0.000 claims abstract description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000010703 silicon Substances 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims abstract description 5
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 4
- 238000005098 hot rolling Methods 0.000 claims description 10
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 7
- 229910001566 austenite Inorganic materials 0.000 claims description 7
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 3
- 230000036632 reaction speed Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 2
- 238000009749 continuous casting Methods 0.000 abstract description 10
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 238000005275 alloying Methods 0.000 abstract description 4
- 238000005204 segregation Methods 0.000 abstract description 4
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 238000007711 solidification Methods 0.000 abstract description 3
- 230000008023 solidification Effects 0.000 abstract description 3
- 239000000843 powder Substances 0.000 abstract 2
- 238000003303 reheating Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 229910000937 TWIP steel Inorganic materials 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000002180 anti-stress Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/02—Rolling special iron alloys, e.g. stainless steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/111—Treating the molten metal by using protecting powders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/1213—Accessories for subsequent treating or working cast stock in situ for heating or insulating strands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/14—Plants for continuous casting
- B22D11/142—Plants for continuous casting for curved casting
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/021—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular fabrication or treatment of ingot or slab
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/021—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular fabrication or treatment of ingot or slab
- C21D8/0215—Rapid solidification; Thin strip casting
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Metal Rolling (AREA)
- Continuous Casting (AREA)
- Heat Treatment Of Steel (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
For various reasons, in the prior art it is considered difficult or impossible to produce steels with high manganese (Mn), aluminium (AI) and silicon (Si) contents and with TWIP (Twinning Induced Plasticity) properties by continuous casting. The reasons cited include low strength of the strand shell during solidification on account of extensive micro-segregation of Mn, high strength at lower temperatures, reactions of the aluminium in the steel with the casting powder, macro-segregations, depletion of the alloying elements in the surface region and oxidation of the grain boundaries during reheating of slabs in the pusher furnace. Therefore, the invention proposes that, by successive process steps, lightweight structural steel with a predetermined chemical composition of up to 27% Mn, 1 to 6% AI, 1 to 6% Si, < 0.8% C, remainder Fe and accompanying elements, be cast on a thin-slab casting machine (1) (d = 120 mm) using suitable casting powders, then immediately after the solidification slabs (3) be severed from the endless strand (2) and that temperature equalization be carried out during continuous passage through an intermediate furnace (4) and then the slab (3) be directly hot-rolled without intervening cooling.
Description
Technical field
The present invention relates to a kind of method and a kind of equipment, be used to produce a kind of hot-rolled band, this band is by a kind of well cold forming, high-intensity, band that the austenite lightweight structural steel constitutes, has high manganese (Mn), aluminium (Al) and silicon (Si) content, and has TWIP-performance (twinning-induced plasticity), this steel is at first cast a kind of continuous continuous casting billet on a kind of continuous casting installation for casting, be divided into slab again, is rolled down to final thickness then.
Background technology
Austenite lightweight structural steel with TWIP-character is used for car body element and the cryogen vessel and the pipeline of for example car body plate, enhancing, this class lightweight structural steel for example all has a kind of chemical composition that meets EP 0 889144B1: 10～30%Mn, 1～6%Si, 1～8%Al (with Si+Al≤12%), surplus is Fe.
Introduced a kind of high-intensity lightweight structural steel in DE 19900199A1, its composition is 7～30%Mn, 1～10%Al, 0.7～4%Si ,≤10%Cr ,≤10%Ni, ≤ 3%Cu and≤0.5%C, and selectively have other alloying element N, Va, Nb, Ti, P, this lightweight structural steel also has good resistance to corrosion and anti-stress cracking erosiveness except good mechanism's character is arranged.This steel should be to adopt being shaped with hot rail of continuous metal cast process casting, perhaps forms near the casting of final size ground by the thin plate casting.
Adopt continuous metal cast process make potassium steel by prior art all think for various reasons difficulty or even can not.The reason of being addressed is: (at Mn＞15% risk of breakage o'clock is arranged) because the strong microsegregation of Mn is when solidifying, the intensity of casting blank solidification shell is very little; Intensity very high (equipment overload, crack problem) under the cryogenic conditions; Aluminium in the steel is with the reaction (restriction of function) of casting pulvis; Gross segregation; Because the water spray cooling causes the absorption to hydrogen and/or oxygen; The generation nonmetallic inclusion increases; Alloying element reduces in the edge; And the oxidation of crystal boundary when slab heats again in continuous-type furnace.
In article that Spitzer etc. delivers " newly create steel part-to the challenge of technological development " (" Innovative Stahlprodukte-Herausforderung f ü r dieProzessenentwicklung ", Kon ferenz-Einzelbericnt:Barbara 2001, the 71-84 page or leaf), propose: it is difficult more to contain the high more steel casting of manganese for this reason.Its intensity was very little after this steel was solidifying under hot conditions on the one hand, and this is because the manganese of high-load increases richness strongly in surplus liquation, and reduces fusing point in the interdendritic scope.Like this, the tendency that is entangled in the rolled piece fracture in the roll will increase, and this Mn of breaking at content reaches 15%, and according to current estimation continuous metal cast process to be become when above impossible.On the other hand, this steel has high intensity under lower temperature, so can produce equipment excess load phenomenon when crooked foundry goods, must have crackle and form.In addition, when aluminium content has big percentage, as in these steel, setting up, can produce and cast the reaction of pulvis, the function of these reaction infringement casting pulvis in order to reduce density.
At article " character of potassium steel under the condition of approximate continuous casting " (" the Eigenschaften hoch-manganhaltiger that another piece delivered by Gigacher etc.
Unter
Bedingungen "; BHM149 (2004), the 3rd phase, 112-117 page or leaf) in, the summing-up affirmation done: for the casting of producing the alloy notion that the TWIP-steel proposed is disadvantageous for the method for using the casting pulvis for this reason.
Present problem is the reaction of hydrogenation composition of Al and casting pulvis in the steel in the casting of the steel with high Al-content (＞1%).Because the SiO in the casting pulvis
2Reduce by the Al in the steel, produce Al
2O
3, and be cast pulvis and absorb, like this, the basicity (CaO/SiO of casting pulvis
2Ratio) just increase.Its consequence is that viscosity in the crystallizer and lubricious strip all can great changes have taken place.
Because above-mentioned these difficulties, the past was once taked various ways for the production of TWIP-steel.
WO 02/101109 discloses a kind of method, method according to this, and by improving possible phosphorus content (C≤1%) and adding other element, B particularly here, also has Ni, Cu, N, Nb, Ti, V, P, thus thereby can reach and obviously reduce the purpose that yield point is improved deformability in hot rolling with when cold rolling.In order to produce this steel, must heat preformed material (slab, sheet billet or band), and under the condition of observing the uniform temperature limit, carry out hot rolling and coiling.
In EP 1341937B1, introduced a kind of method, method according to this, utilize a kind of twin roll caster to cast out a kind of thin prefabricated band that contains 12～30%Mn, its thickness is less than 1mm to 6mm, this prefabricated band that vertically comes out from the casting crack is cooled off by being arranged in lip-deep cooling agent, is rolled down to final thickness then on a single hot rolling platform.From the casting crack, come out to and be spaced apart about 8 seconds total time that enters roll mill.
The method of producing band from a kind of Fe-C-Mn alloy is disclosed in EP 1 067 203B1, according to this, at first produce a kind of thin band on a kind of twin roll caster, its thickness is between 1.5 to 10mm, and its composition is: 6～30%Mn, 0.001 to 1.6%O, ≤ 2.5%Si ,≤6%Al ,≤10%Cr, and other element, this band then with a reduction degree between 10% and 60% by the in addition hot rolling of one or more steps.
Summary of the invention
From above-mentioned prior art situation, task of the present invention provides a kind of method and a kind of equipment of realizing of being easy to as far as possible, according to this, can produce steel high Mn content, that have the predetermined chemical composition by continuous casting.
With regard to method, solve by the method for hot-rolled band by being used for being produced by well cold forming, high-intensity austenite lightweight structural steel for being proposed of task: this steel has manganese, aluminium and the silicon that improves content and has TWIP-character (twinning-induced plasticity), lightweight structural steel is at first cast continuous continuous casting billet on continuous casting installation for casting, again it is divided into slab, be rolled down to final thickness then
Lightweight structural steel has predetermined chemical composition: 15～27%Mn, 1～6%Al, 1～6%Si, ≤ 0.8%C, all the other are Fe and associated element, by the step that next coming in order are arranged, this lightweight structural steel is being cast under the situation of using the casting pulvis on the sheet billet casting machine, the casting pulvis have increase＞10% Al
2O
3Content makes SiO
2The reaction speed of the reduction by the Al in the steel reduces and/or makes the viscosity by casting pulvis in the crystallizer reduce the Al that produces
2O
3Content reduces, next,
Solidify continuous billet casting,
The continuous billet casting of solidifying by separation obtains slab,
Make slab by intermediate furnace producing the temperature balance,
The cooling ground that slab does not have interlude directly carries out hot rolling.
The invention provides and a kind ofly be used for by cold forming well, high-intensity austenite lightweight structural steel is produced the equipment of hot-rolled band, this steel has the manganese that improves content, aluminium and silicon and have TWIP-character (twinning-induced plasticity), this equipment is used for implementing according to method of the present invention, this equipment comprises that CSP-equipment (rolled strip production equipment) constitutes, it has installed device part successively: the sheet billet casting machine, intermediate furnace and equipment of hot rolling, it is characterized in that: the distance between the environment division is changed, feasible and then solidifying of continuous continuous casting billet, in intermediate furnace by the time realize the temperature balance of separated slab, slab has interlude cooling ground and does not directly carry out hot rolling then.
For example (CSP=Compact strip Production: when rolled strip production) producing sheet billet, continuous casting billet vertically is output, and is bent to horizontal plane after solidifying, and is split up into slab then on the CSP-casting machine.The problem that therefore can not occur internal fissure here.With regard to the prior art situation, the production of high strength austenite steel can not have equipment excess load phenomenon.
The sort of microsegregation phenomenon that directly still is present in solidifying after in the strand is disappearing again during for example by a roller hearth furnace by intermediate furnace, also before the roll forming that then carries out, also most of understand disappear by diffusion.In this, the low power segregation phenomena at slab center can obtain balance fully, and is close with austenite special steel under the situation of strong deformation in equipment of hot rolling.
The present invention proposes to adopt the roller hearth furnace of CSP-equipment, because it is very short by the time, advantageously avoid the bigger minimizing of alloying element, just can avoid the oxidation of crystal boundary, this point for example under the situation of longer heating period, may cause difficulty by prior art in the continuous-type furnace of the width belt steel hot-rolleding machine of routine.
In order on a kind of sheet billet casting machine, to use the foundry engieering of TWIP-lightweight structural steel by the present invention, need with a kind of suitable casting pulvis with high Mn and Al content.A kind of so suitable casting pulvis has following character corresponding to the present invention, can reach balance rapidly, and also can not change later its lubrication property again.
In order for example to reduce SiO by the Al in the steel
2The reaction speed of-reduction, the casting pulvis according to the present invention contain one increase＞10% Al
2O
3Share.In order in poised state, to obtain more SiO
2, can be in addition or additionally improve the SiO of casting pulvis
2-share, this raising is up to the basicity (CaO/SiO of a 0.5-0.7
2Ratio) just be achieved.
Because MnO
2Compared with SiO
2It is easier of the reduction of the Al in the steel to come, and so SiO
2This reduction (scaling loss) is protected, so can add MnO to the casting pulvis as another measure of the present invention
2
Also can use TiO
2Partly replace SiO
2, TiO
2As SiO
2Play a part to form glass, but can not corroded (reduction), it can be incorporated in the casting pulvis according to the present invention by the Al in the steel.
At last, also having a kind of scheme, is exactly the viscosity that reduces the casting pulvis in crystallizer.So just, can improve casting pulvis-consumption, and get rid of how established Al
2O
3Thereby, with lower Al
2O
3-content is set up out a kind of balance.By adding B to the casting pulvis
2O
3(borate), Na
2O and/or LiO
2Also can reach the purpose of above-mentioned reduction viscosity.
Description of drawings
The production process that to produce a kind of equipment of hot-rolled band with schematic diagram being used to of describing that the present invention proposes in detail below.
The specific embodiment
From the principle, used equipment refers to a kind of known CSP-equipment, according to the present invention, change in the distance between each environment division on this equipment, make the inventive method following requirement to be implemented: and then to solidify, in an intermediate furnace by the time realize the temperature balance, do not have the cooling ground of interlude directly slab to be carried out hot rolling then.
The equipment of drawing in the accompanying drawing comprises according to this with the lower part: a sheet billet casting machine 1 and an intermediate furnace 4 that is arranged in thereafter, the slab 3 that is branched away after it solidifies by continuous casting 2 is fed in this intermediate furnace.Settled a milling train 5 after intermediate furnace 4, on this milling train, slab 3 is realized not being rolled into hot-rolled band after the temperature balance in intermediate furnace 4 with directly promptly having middle cooling.
Claims (5)
1. be used for by well cold forming, that high-intensity austenite lightweight structural steel is produced hot-rolled band (6) method, this steel has manganese (Mn), aluminium (Al) and the silicon (Si) that improves content and has TWIP-character, lightweight structural steel is at first cast continuous billet casting (2) on sheet billet casting machine (1), again it is divided into slab (3), be rolled down to final thickness then
It is characterized in that:
Lightweight structural steel has predetermined chemical composition: 15～27%Mn, 1～6%Al, 1～6%Si, ≤ 0.8%C, all the other are Fe and associated element, by the step that next coming in order are arranged, this lightweight structural steel is gone up under the situation of using the casting pulvis at sheet billet casting machine (1) and is cast, the casting pulvis have increase＞10% Al
2O
3Content makes SiO
2The reaction speed of the reduction by the Al in the steel reduces and/or makes the viscosity by casting pulvis in the crystallizer reduce the Al that produces
2O
3Content reduces, next,
Solidify continuous billet casting (2),
The continuous billet casting (2) of solidifying by separation obtains slab (3),
Make slab (3) pass through intermediate furnace (4) with generation temperature balance,
The cooling ground of the no interlude of slab (3) directly carries out hot rolling.
2. by the described method of claim 1, it is characterized in that:
The casting pulvis has the SiO of raising
2Content, the basicity that this casting pulvis has is between 0.5～0.7.
3. by claim 1 or 2 described methods, it is characterized in that:
The casting pulvis contains MnO
2And/or TiO
2
4. by claim 1 or 2 described methods, it is characterized in that:
In order to reduce the viscosity of casting pulvis in the crystallizer, the casting pulvis contains B
2O
3, Na
2O and/or LiO
2Composition.
5. by claim 1 or 2 described methods, it is characterized in that:
Intermediate furnace (4) is a roller hearth furnace.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005010243.3 | 2005-03-05 | ||
| DE102005010243A DE102005010243A1 (en) | 2005-03-05 | 2005-03-05 | Method and plant for producing a lightweight steel with a high manganese content |
| PCT/EP2006/001954 WO2006094718A1 (en) | 2005-03-05 | 2006-03-03 | Process and installation for producing a lightweight structural steel with a high manganese content |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101160183A CN101160183A (en) | 2008-04-09 |
| CN101160183B true CN101160183B (en) | 2011-07-06 |
Family
ID=36218445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006800071903A Expired - Fee Related CN101160183B (en) | 2005-03-05 | 2006-03-03 | Process and installation for producing a lightweight structural steel with a high manganese content |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US20080164003A1 (en) |
| EP (1) | EP1725347B1 (en) |
| JP (1) | JP4688890B2 (en) |
| KR (1) | KR101153735B1 (en) |
| CN (1) | CN101160183B (en) |
| CA (1) | CA2560681A1 (en) |
| DE (1) | DE102005010243A1 (en) |
| RU (1) | RU2335358C2 (en) |
| TW (1) | TW200700566A (en) |
| UA (1) | UA80237C2 (en) |
| WO (1) | WO2006094718A1 (en) |
| ZA (1) | ZA200607920B (en) |
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| DE102008005806A1 (en) * | 2008-01-17 | 2009-09-10 | Technische Universität Bergakademie Freiberg | Components made of high-manganese, solid and tough cast steel, processes for their production and their use |
| KR20160039304A (en) * | 2008-01-30 | 2016-04-08 | 타타 스틸 이즈무이덴 베.뷔. | Method of producing a hot-rolled twip-steel and a twip-steel product produced thereby |
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| DE102009030324A1 (en) * | 2009-06-24 | 2011-01-05 | Voestalpine Stahl Gmbh | Manganese steel and process for producing the same |
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| CN104711494B (en) * | 2015-04-14 | 2017-11-28 | 钢铁研究总院 | Low-density high-ductility NiAl strengthens unimach and preparation method |
| CN106480366A (en) * | 2015-08-31 | 2017-03-08 | 鞍钢股份有限公司 | High-axial-crystal-rate high-manganese steel ingot and smelting method thereof |
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| CN106624603A (en) * | 2015-10-28 | 2017-05-10 | 丹阳市龙鑫合金有限公司 | ACP1000 anti-vibration strip assembly and production method thereof |
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| CN110238203A (en) * | 2019-06-13 | 2019-09-17 | 首钢集团有限公司 | A method of it eliminating hot rolling tool steel edge and sticks up skin |
| CN110819908B (en) * | 2019-11-18 | 2021-03-23 | 燕山大学 | High-strength low-density austenitic steel and preparation method thereof |
| CN112391571A (en) * | 2020-11-25 | 2021-02-23 | 攀钢集团西昌钢钒有限公司 | Control method for cleanliness of high-strength high-aluminum high-manganese steel |
| CN112760568B (en) * | 2020-12-25 | 2022-02-25 | 钢铁研究总院 | High-strength high-plasticity low-density steel and preparation method thereof |
| CN115106490B (en) * | 2021-03-19 | 2024-06-04 | 宝山钢铁股份有限公司 | Hollow granular casting slag for continuous casting production and preparation method thereof |
| CN115058661A (en) * | 2022-06-17 | 2022-09-16 | 湖南华菱涟源钢铁有限公司 | High-carbon high-manganese steel plate and production method thereof |
| CN116287975A (en) * | 2023-01-09 | 2023-06-23 | 鞍钢股份有限公司 | High-entropy steel and manufacturing method thereof |
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- 2006-03-03 KR KR1020067018434A patent/KR101153735B1/en not_active IP Right Cessation
- 2006-03-03 CA CA002560681A patent/CA2560681A1/en not_active Abandoned
- 2006-03-03 CN CN2006800071903A patent/CN101160183B/en not_active Expired - Fee Related
- 2006-03-03 EP EP06723198A patent/EP1725347B1/en active Active
- 2006-03-03 TW TW095107128A patent/TW200700566A/en unknown
- 2006-03-03 RU RU2006136036/02A patent/RU2335358C2/en not_active IP Right Cessation
- 2006-03-03 US US11/666,535 patent/US20080164003A1/en not_active Abandoned
- 2006-03-03 UA UAA200611050A patent/UA80237C2/en unknown
- 2006-03-03 WO PCT/EP2006/001954 patent/WO2006094718A1/en active Application Filing
- 2006-09-19 ZA ZA200607920A patent/ZA200607920B/en unknown
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Also Published As
| Publication number | Publication date |
|---|---|
| JP4688890B2 (en) | 2011-05-25 |
| WO2006094718A1 (en) | 2006-09-14 |
| KR20070108440A (en) | 2007-11-12 |
| ZA200607920B (en) | 2008-04-30 |
| EP1725347A1 (en) | 2006-11-29 |
| TW200700566A (en) | 2007-01-01 |
| RU2335358C2 (en) | 2008-10-10 |
| DE102005010243A1 (en) | 2006-09-07 |
| CN101160183A (en) | 2008-04-09 |
| US20080164003A1 (en) | 2008-07-10 |
| RU2006136036A (en) | 2008-05-10 |
| JP2008531292A (en) | 2008-08-14 |
| EP1725347B1 (en) | 2012-12-26 |
| KR101153735B1 (en) | 2012-06-08 |
| CA2560681A1 (en) | 2006-09-14 |
| UA80237C2 (en) | 2007-08-27 |
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