CN101193712A - 用于不间断制造钢板的方法和设备 - Google Patents
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 44
- 239000010959 steel Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title abstract description 9
- 238000005096 rolling process Methods 0.000 claims abstract description 25
- 238000009749 continuous casting Methods 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims description 10
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 5
- 238000003801 milling Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000002436 steel type Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
- 229910003470 tongbaite Inorganic materials 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
- B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4998—Combined manufacture including applying or shaping of fluent material
- Y10T29/49988—Metal casting
- Y10T29/49991—Combined with rolling
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- Engineering & Computer Science (AREA)
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Abstract
用于从形成板坯(10)的连铸步骤(1)开始制造厚度<100mm、宽度达到4000mm的钢板的方法和相关设备,包括液芯减缩步骤,不间断直至在至少一机台上以高减缩比进行的终端轧制步骤(3)完成。进入轧制步骤的平均温度为≥1250℃,但是对于纯钢或低合金钢可以降低最多。
Description
技术领域
本发明涉及从连铸至终端轧制台不间断制造钢板的方法和相关设备。
背景技术
已知传统上,在制造这一领域,“可逆的”轧制台已普遍用于轧制,通过若干次纵向和横向移动,以每次在长度和宽度上增加产品尺寸,钢锭,最好是矩形横截面的,或板坯,在上游的一个加热和温度均衡炉中适当加热,直到获得具有理想厚度和宽度的钢板。根据用于制造的钢材类型和技术,钢锭或板坯的尺寸,后者可能产生于连铸,是厚度在120mm~400mm,宽度在1000mm~2000mm。
也已知在这种类型的处理中,起始原料,即钢锭或板坯,的厚度和所期望的最终钢板的厚度之间的比例应不低于1∶4,以确保熔接可能存在芯内或中间地带的孔隙,这在很厚的钢锭/板坯中是典型的。这意味着,对于最终厚度为50mm的钢板,起始板坯的最小厚度是200mm。
随着后来发展的薄中厚度板坯技术,已根据被浇铸的厚度达150mm、宽度达到3600mm的板坯来设计设备。一旦通过加热和温度均衡炉,这些板坯随后被切割,成一直线传送至可逆轧机,可是该可逆轧机只适用于纵轧。
用这些设备,板坯和最终钢板之间的厚度比例可低至1∶3,而150mm的最小板坯厚度被需要用于制造50mm厚的钢板。当然,通过使同样的可逆机台与在炉中的两轨道一起工作(″钢板/斯特克尔式轧机技术″(“plate/Steckel mill technology”)),也可能可以用这些设备不仅生产钢板,也生产卷成线圈的带钢。很明显,板坯和最终钢板之间的缩减比1∶3时,要获得厚度为40mm-50mm的成品钢板,厚度为120mm-150mm的板坯以2m/min的最大速率进行浇铸是必要的,这不足以进行不间断直线轧制加工,正相反的,其要求最低速度为3.5m/min。
迄今为止,这些因素阻碍了在钢板制造中采用已知用于制造卷钢的″铸轧″技术。从实验测试来看,尽管由于轧制台的缩减的扭矩值,没有使获得高于35%的缩减成为可能,数学模拟模型已经开发出来。从这些模型已经理解,用甚至大于50%,甚至高达60%的缩减系数,可以达到同样的质量结果,导致更紧凑的设备,并进一步降低生产成本和投资。
发明内容
因此,本发明的一个目的是提供一种以低投资和生产成本制造厚度达100mm、宽度至4000mm的钢板的方法和相关设备。
当采用根据本申请人名下的专利EP0925132、EP0946316和EP1011896的用于制造钢圈的技术时,已发现,在模具出口以75mm厚的产物开始,在连铸出口厚度为55mm,经过液芯缩减(“软缩减”)后,确定了平均温度高于1250℃,速度为5m/min。用具有高压缩比(第一机台33%,第二机台30%)的两机台实现直线轧制,以获得25mm厚的最终钢板,因此板坯/钢板的厚度比约1∶2。质量比得上根据现有技术制造的钢板;特别的,没有孔隙,在整个厚度具有均质的显微结构。
因此,本发明的目的是通过分别限定在权利要求1和7中的综合特征中的方法和相关设备来实现的。
附图说明
从对以非限制的例子方式提供的两具体实施例的以下详细描述,参考附图,本发明的这些和其他目的、优点和特征,将更加清晰,其中:
图1显示了根据本发明的用于制造不锈钢钢板的设备的示意图;和
图2显示了根据本发明的用于用纯钢或低合金钢制造钢板的设备的示意图。
具体实施方式
参考图1,显示了一种设备,其上提供了具有在连铸机1和轧制步骤末端之间的约60米的整体距离的设备的各部分之间的相互间距离。也显示了厚度值,有别于上面给出的例子中提到的厚度值,不过无论如何落入所要求的值的范围。事实上以70mm的厚度开始,从连铸机1制造板坯10,速度3.5m/min,平均温度1250℃,接着去鳞机2,然后,不间断的,轧机3,与连铸机1成一直线而无连续,直至在出口获得厚度甚至低于8mm的钢板。根据钢材类型和钢板的理想厚度,以3个数字(M1~M3)标示的轧制台可以通过省略其中一个或两个来减少数目。事实上,由于所述要求的温度条件,即使只经过单个轧制台和在1∶1.5和1∶2.5之间的合适的压缩比,较佳地约1∶2,有可能获得最终钢板。
事实上将注意到,用于薄板坯的一个有利的温度曲线图,在芯(core)内或中间区域的温度值相当高、接近1350℃,增加平均轧制温度,允许高厚度缩减,因此关于传统钢板轧机以更少的轧制移动熔接内部孔隙。事实上,在恒宽下超过一定的缩减比例或形状因数,在薄板坯芯上的静压或特定压力达到足够高的值以熔接任何存在的空隙。此外,高变形温度增强结晶,即颗粒变形的过程,然后,由于高温,结晶完全,从而有利于均一的微观结构的形成,与如专利EP0580062教导的在低温如从1050℃至900℃轧制所发生的相反。这些低温事实上通常产生结晶没有完全的混合结构。
高轧制温度也增强不锈钢中铬碳化物的溶解,从而避免了他们的沉淀,不需寻找随后的特定的溶解处理办法。
再参考图1,在4后进行加速冷却步骤,这使得钢板形状的显微结构和特性得到进一步改善。
最后,在经过了在期望长度切割钢板的切割装置5以后,可以进行矫直步骤6。
参考图2,显示的是根据本发明的设备的另一具体实施例,它特别适用于制造纯钢或或低合金钢钢板。在这种情况下,在机台M2和M3之间提供了一台间冷却4’,能降低高轧制温度50℃~100℃,因为它是这些类型的钢材所需要的。在这些情形下,事实上有必要给热机械轧制提供一种机械变形和冷却相结合的处理。
作为在这两机台之间的额外的冷却***4’的存在的后果,M2和M3之间的距离是更大了。还是考虑到上面提到的热机械处理,对于纯钢或低合金钢所要求的,在出口辊径上第一机台M1和集中冷却4之间也可以设置较小的距离。
Claims (11)
1.一种用于从板坯连铸步骤制造厚度<100mm、宽度达到4000mm的钢板的方法,其特征在于,包括液芯减缩步骤,在出口处厚度≥55mm,平均温度≥1250℃,不间断直至通过一或更多机台以高压缩比进行的终端轧制步骤结束,接着是冷却步骤,和在钢板的期望长度进行切割。
2.根据权利要求1所述的方法,其特征在于,设置有最终矫直步骤。
3.根据权利要求1所述的方法,其特征在于,离开连铸的板坯的厚度和轧制完毕的钢板的最终厚度之间的比例是1∶1.5~1∶2.5。
4.根据权利要求1所述的方法,其特征在于,在所述轧制步骤的上游设置有去鳞机步骤。
5.根据前述任意一项权利要求所述的方法,其特征在于,在轧制步骤开始时,要进行轧制的材料的芯温约1350℃。
6.根据权利要求1所述的方法,其特征在于,对于纯钢或低合金钢要求的热机械处理,在轧制机台之间设置有额外的中间冷却步骤以降低轧制温度50℃~100℃。
7.一种用于从连铸产物板坯制造厚度<100mm、宽度达到4000mm的钢板的设备,其特征在于,在连铸模具(1)后,包括液芯减缩装置以在出口处获得厚度≥55mm,平均温度≥1250℃,不间断直至在高减缩比下具有一或更多与所述连铸成一直线的机台(M1、M2、......)的终端轧机(3)的最终机台,接着是冷却装置(4)和用于在期望长度切割钢板的切割装置(5)。
8.根据权利要求7所述的设备,其特征在于,包括最终矫直机(6)。
9.根据权利要求7所述的设备,其特征在于,包括去鳞机(2),就在所述轧机(3)的上游。
10.根据权利要求7所述的设备,具有一总体长度,从连铸模具(1)至最终冷却装置(4),不大于60m。
11.根据权利要求7或8所述的设备,其特征在于,对于最大要求热机械处理的纯钢或低合金钢,在轧制台(M1、M2、......)之间的中间位置设置有额外冷却装置(4’)以降低轧制温度50℃~100℃。
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PCT/IT2005/000412 WO2007010564A1 (en) | 2005-07-19 | 2005-07-19 | Process and plant for manufacturing steel plates without interruption |
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CN101193712B CN101193712B (zh) | 2012-02-22 |
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US (2) | US8162032B2 (zh) |
EP (1) | EP1909979B1 (zh) |
JP (1) | JP5046399B2 (zh) |
KR (1) | KR101204479B1 (zh) |
CN (1) | CN101193712B (zh) |
AT (1) | ATE485897T1 (zh) |
AU (2) | AU2005334649B2 (zh) |
BR (1) | BRPI0520363A2 (zh) |
CA (1) | CA2611390C (zh) |
DE (1) | DE602005024455D1 (zh) |
EG (1) | EG24685A (zh) |
ES (1) | ES2350846T3 (zh) |
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CN102189102B (zh) * | 2010-03-09 | 2013-02-06 | 中冶东方工程技术有限公司秦皇岛研究设计院 | 一种连铸机在线调厚辊式大压下液芯轧制方法 |
CN101829889B (zh) * | 2010-04-30 | 2011-12-07 | 钟长林 | 短流程连铸连轧奥氏体不锈钢棒的生产工艺 |
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US9399253B2 (en) * | 2013-06-18 | 2016-07-26 | Nippon Steel & Sumitomo Metal Corporation | Method for continuously casting slab for heavy gauge steel plate |
CN104415973B (zh) * | 2013-08-28 | 2016-03-30 | 中冶东方工程技术有限公司秦皇岛研究设计院 | 一种铸轧一体化轧制速度控制方法 |
CN104148387B (zh) * | 2014-07-11 | 2016-05-04 | 中冶东方工程技术有限公司 | 一种连铸热芯轧制方法 |
CN104084429B (zh) * | 2014-07-11 | 2015-09-23 | 中冶东方工程技术有限公司 | 一种液芯大压下轧制压下量控制方法 |
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IT202000016120A1 (it) | 2020-07-03 | 2022-01-03 | Arvedi Steel Eng S P A | Impianto e procedimento per la produzione in continuo di nastri d’acciaio ultrasottili laminati a caldo |
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IT1288863B1 (it) * | 1996-03-15 | 1998-09-25 | Danieli Off Mecc | Procedimento di laminazione in continuo per lamiere e/o nastri e relativa linea di laminazione in continuo |
DE19613718C1 (de) * | 1996-03-28 | 1997-10-23 | Mannesmann Ag | Verfahren und Anlage zur Herstellung von warmgewalztem Stahlband |
IT1284035B1 (it) | 1996-06-19 | 1998-05-08 | Giovanni Arvedi | Tuffante per la colata continua di bramme sottili |
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IT1293817B1 (it) | 1997-08-04 | 1999-03-10 | Giovanni Arvedi | Lingottiera per la colata continua di bramme d'acciaio a contatto migliorato |
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US6296047B1 (en) | 1999-05-21 | 2001-10-02 | Danieli Technology, Inc. | Endless casting rolling system with single casting stand |
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ITMI20021996A1 (it) | 2002-09-19 | 2004-03-20 | Giovanni Arvedi | Procedimento e linea di produzione per la fabbricazione di nastro a caldo ultrasottile sulla base della tecnologia della bramma sottile |
JP2005095926A (ja) * | 2003-09-24 | 2005-04-14 | Kawasaki Heavy Ind Ltd | 連続鋳造熱延設備および連続鋳造熱延方法 |
PL1909980T3 (pl) | 2005-07-19 | 2010-02-26 | Giovanni Arvedi | Proces i odpowiednia do niego instalacja technologiczna do wytwarzania w sposób nieprzerwany długich produktów stalowych |
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2005
- 2005-07-19 WO PCT/IT2005/000412 patent/WO2007010564A1/en active Application Filing
- 2005-07-19 MX MX2008000537A patent/MX2008000537A/es active IP Right Grant
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- 2005-07-19 KR KR1020077027836A patent/KR101204479B1/ko active IP Right Grant
- 2005-07-19 US US11/988,334 patent/US8162032B2/en not_active Expired - Fee Related
- 2005-07-19 JP JP2008522178A patent/JP5046399B2/ja not_active Expired - Fee Related
- 2005-07-19 ES ES05778616T patent/ES2350846T3/es active Active
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107020359A (zh) * | 2017-05-10 | 2017-08-08 | 攀钢集团攀枝花钢钒有限公司 | 能够均匀降低铸坯表面温度的施工工艺 |
Also Published As
Publication number | Publication date |
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WO2007010564A1 (en) | 2007-01-25 |
KR20080025671A (ko) | 2008-03-21 |
BRPI0520363A2 (pt) | 2009-09-29 |
AU2005334649A2 (en) | 2008-12-11 |
ES2350846T3 (es) | 2011-01-27 |
EG24685A (en) | 2010-05-05 |
AU2008229955A1 (en) | 2010-05-06 |
DE602005024455D1 (de) | 2010-12-09 |
US8162032B2 (en) | 2012-04-24 |
AU2008229955B2 (en) | 2015-08-27 |
AU2005334649A1 (en) | 2007-01-25 |
EP1909979A1 (en) | 2008-04-16 |
JP2009501635A (ja) | 2009-01-22 |
ATE485897T1 (de) | 2010-11-15 |
CN101193712B (zh) | 2012-02-22 |
JP5046399B2 (ja) | 2012-10-10 |
US20120180975A1 (en) | 2012-07-19 |
US20090159234A1 (en) | 2009-06-25 |
KR101204479B1 (ko) | 2012-11-27 |
EP1909979B1 (en) | 2010-10-27 |
CA2611390A1 (en) | 2007-01-25 |
CA2611390C (en) | 2012-05-15 |
AU2005334649B2 (en) | 2011-04-28 |
MX2008000537A (es) | 2008-03-06 |
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