CN101365918B - 用于对由钢或者合金钢组成的连铸产品进行加热和/或温度平衡的辊底加热炉及其辊底加热炉的使用方法 - Google Patents

用于对由钢或者合金钢组成的连铸产品进行加热和/或温度平衡的辊底加热炉及其辊底加热炉的使用方法 Download PDF

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CN101365918B
CN101365918B CN2006800524994A CN200680052499A CN101365918B CN 101365918 B CN101365918 B CN 101365918B CN 2006800524994 A CN2006800524994 A CN 2006800524994A CN 200680052499 A CN200680052499 A CN 200680052499A CN 101365918 B CN101365918 B CN 101365918B
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roller
hearth furnace
roller hearth
continuous casting
buffering area
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CN101365918A (zh
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C·克莱因
D·霍夫曼
F·本弗
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SMS Siemag AG
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/28—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity for treating continuous lengths of work
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/02—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces
    • F27B9/021—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces having two or more parallel tracks
    • 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
    • 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
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/201—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace walking beam furnace
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor
    • F27B9/2407—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor the conveyor being constituted by rollers (roller hearth furnace)
    • 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
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/004—Heating the product

Abstract

用于对连铸产品(2)进行加热和/或温度平衡的一种辊底加热炉(1)具有第一个布置于纵向方向(12)上的辊子列(13)并在输出侧(14)具有第二个平行的辊子列(15)，其中在辊子列(13，15)之间设有一个缓冲区(16)，它具有提升元件(17)用于横向运送连铸产品(2)。此外还规定了对于另一种工序路线(28)时的布置的备选方案。

Description

用于对由钢或者合金钢组成的连铸产品进行加热和/或温度平衡的辊底加热炉及其辊底加热炉的使用方法
技术领域
本发明涉及一种用于对连铸产品进行加热和/或温度平衡的辊底加热炉，这连铸产品尤其是由钢或者钢材料组成并以适合加热炉的分段长度可以在辊子上通过炉腔输入并又输出，以及涉及一种应用加热炉在热轧带精轧机列前的方法，在这精轧机列里还将热轧带轧制、冷却并在一个卷取站里被卷绕成卷盘。 
背景技术
这样的辊底加热炉很长并有热损失，并且由于氧化皮的回炉重烤而长时间地置于辊子上使其压入到连铸产品的底面上，这随后在轧制时就造成轧件，尤其是轧带的质量降低。 
一种这样的布置在热轧带精轧机列前的辊底加热炉例如由DE 4411 216 A1中就已知了。这种炉子具有固定炉底和提升炉底，在其耐火炉衬上放置了加热件。在这耐火炉衬里加工有倾斜凹处，其作用应该是下部加热和排除氧化皮。氧化皮经过炉床之间的输送槽并通过氧化皮落井被排出。 
在由辊子构成的炉床中虽然通过辊子间距可以更有利地在短的间距上使氧化皮排出，但是余下的氧化皮由于重的连铸产品，例如象板坯-分段长度的重量而压入到连铸材料里并引起所提到的表面误差，这种误差正如前面所述，会一直继续到制成产品。设有辊子的提升炉床例如已在EP 0 361 057 B1中公开。然而一种这样的结构类型是一种极复杂的结构作为由运输辊子组成的滚动-和提升炉床装置，这些运输辊子设置于炉膛之外并且可以通过在提升炉床的中间腔里的炉子侧壁板的开孔移入和移出。因此产生很大的热损失并具有低的热效率。 
发明内容
用于对连铸产品进行加热和/或温度平衡的辊底加热炉由专利文件IT 1 236 130B，EP0 264 459 A1，EP 0 353 487 A1，WO 94/18 514A和DE 35 25 459A已知。在这些辊底加热炉中不可能改变热效率。 
本发明的任务是对传统的辊底加热炉进行改进，从而实现缩短了其长度和缩减了整体设备(例如象一种CSP-/紧凑条板生产)，这些设备包括有连铸设备和热轧带精轧机列，同时改善了热效率并因此节省了能量。同时在连铸产品底面上较少有损伤性的压入。 
所提任务按照发明在一种按照权利要求1的前序所述的辊底加热炉中通过以下途径来解决：第一个在炉子纵向方向上布置的辊列和/或第二个辊列都有一个加热区。因此有利于改善热效率和节能。板坯可以在需要时更强烈地进行加热。因此可以扩展铸-轧设备的产品品种。 
另一种用于改善温度水平的设计方案在于：在缓冲区里设有另一个可以接入的加热区和/或一个保温区。 
按照发明的另一个特征提升元件可以由提升横梁组成。 
在连续浇铸液态金属，尤其是液态钢材料，成板坯条或者扁平薄条，所谓薄板坯时，这些板坯在辊底加热炉里进行加热和温度平衡之后在一个热轧带-精轧机列里(去氧化皮，按分段长度切割)被轧制成热轧板坯，使之冷却并在一个卷取站里被卷绕成卷盘，按照另一个发明按照如下方法进行一种这样的辊底加热炉的布置：在一个多路连铸设备里设有一个共同的辊底加热炉或者每路连铸流各设有一个分开的辊底加热炉，每路连铸流各有由平行的辊列构成的一个入口侧和一个出口侧和一个位于它们之间的缓冲区，这缓冲区由用于随后的共同的工序路线的提升元件组成。优点是缩减了整体设备和实现了节能，并且因此改善了热效率并在机械方面得到改善。 
按照一种设计方案(第二种备选方案)建议：一个共同用于一个双路连铸设备的辊底加热炉的出口侧布置在随后工序路线的线路中，因此具有相同辊列的二个入口侧和具有一个辊列的在中间的出口侧处于一种镜像的位置上。随后的热轧带精轧机列因此可以以较短的间距供给部分长度的连铸条。 
第三种备选方案规定：对于一种多路连铸设备和一个各自分开的辊底加热炉来说连于出口边并在以下的工序路线之前设有一个使二个辊底加热炉运行着连接起来的“渡船”。因此可以由一个双路连铸设备的二个连铸设备将一个部分长度的连铸件输送给随后的工序路线。 
本发明也考虑了一种位于单路或者多路连铸设备之前的传统的辊底加热炉，这种炉子可以按如下方法进一步被利用：除了具有一个入口边和出口边和一个位于它们之间的由提升元件构成的缓冲区的一个辊底加热炉之外还设有一个在纵向方向上平行地工作的辊底加热炉，而且这些辊底加热炉连接于另一个连于随后工序路线的辊底加热炉，这个加热炉具有入口边和平行的出口边和一个位于它们之间的由提升元件构成的缓冲区(第四种备选方案)。 
最后规定了：在一个紧凑铸轧设备(CSP)里的工序路线由一种具有七个轧机机座的热轧带精轧机列组成。 
附图说明
附图中表示了本发明的实施例，下面对本发明进行详细说明。所示为： 
图1：按本发明的辊底加热炉的平面图； 
图2：具有布置辊底炉的第一种备选方案的整体设备的立体侧视图； 
图3：具有第二种备选方案的辊底加热炉的整体设备的立体侧视图； 
图4：具有第三种用于布置这按照发明的辊底加热炉的备选方案的整体设备的立体侧视图； 
图5：具有第四种用于布置辊底加热炉的备选方案的整体设备的立体侧视图。 
具体实施方式
辊底加热炉(图1)用于使连铸产品2(图2至5)加热和/或保温和/或温度平衡，该连铸产品由板坯条或者扁平薄条3(所谓薄板坯)铸成。为此从浇铸桶4里流出液态钢经过一个具有连铸结晶器6的配料槽道，其中二个盛钢桶对峙布置着在一个盛钢桶转塔5上可以转动到出钢位置上。这在连铸结晶器6里所形成的连铸条6a被冷却并在一个轧机支承机座7里继续进行冷却和支承。各自的连铸产品2在一个去氧化皮装置8里被去除氧化皮并在一个剪切机9里按几米长度的分段长度10切断。符合炉子和轧制的分段长度10由连铸条的尺寸和随后的轧制工 序来确定。 
分段长度10(图1)在进口侧11通过第一个布置于炉子1的纵向方向12上的辊列13进行运输。辊子13a的长度相当于具有附加额的连铸产品3的宽度。 
类似于进口侧11，在出口侧14设有第二个辊列15，它同样也由这样的辊子13a组成。连铸产品在出口侧14沿纵向方向12离开辊列15。在第一个辊列13和第二个辊列15之间形成一个缓冲区16，这缓冲区由未详细示出的提升元件17组成。提升元件17用于在箭头18方向上横向运输连铸产品2。第一个布置于纵向方向12上的辊列13和/或第二个辊列15构成一个加热区19，这加热区由通常的加热装置例如煤气燃烧器、感应加热装置和其它类似装置组成。在缓冲区16里可以设有另外一个可接入的加热区19和/或一个保温区。提升元件17由通常的提升横梁17a组成。 
在剪切机9上对于每个连铸线分别连有一个所述的辊底加热炉1，其中备选地设有各种不同实施形式的布局。在出口侧14在图4实例中设有一个“渡船”20，用于通过一个备用剪切机21连接一个双路连铸设备，在一个多机座热轧带精轧机列23之前连接另外一个去氧化皮装置22。 
在轧制成薄的热轧带24之后使金属带在一个冷却路段25里冷却成具有相应组织的钢带并在一个卷取站26里卷绕成卷盘27。轧制的工序路线28就此而言在图2至5所示的实施例中是相同的。 
按照图2在一个多路连铸设备29中每个连铸线分别设有一个分开的辊底加热炉1(按照发明是一种所谓辊底提升加热炉)，如对图1所作的说明那样。分段长度10被每个辊底加热炉1侧向运输至工序路28的生产线中。 
在图3中进行从二个连铸线起在相反的箭头方向18(第二种备选方案)上的横向运输。 
按照图4虽然为每个连铸线设有二个分开的辊底加热炉1，它们并不位于随后工序路线28的生产线上。因此通过“渡船”20使分段长度10运输至共同的工序路线28的生产线里。 
由图5可见，紧随一个(左)连铸线使用了一个只是在纵向方向上工作的辊底加热炉30，并将这按照本发明的辊底加热炉1用于另一个(右)连铸线。分段长度10可以接着又通过一个按照本发明的辊底提升加热炉一起被输送至下一个工序路线28之前(第四种备选方案)。 
标号表 
1辊底加热炉          17提升元件 
2连铸产品            17a提升横梁 
3板坯条，扁平薄条    18箭头方向 
4盛钢桶，浇铸桶      19加热区 
5盛钢桶转塔          20“渡船” 
6连铸结晶器          21备用剪床 
7轧机支承机座        22去氧化皮装置 
8去氧化皮装置        23热轧带精轧机列 
9剪床                24热轧带 
10分段长度           25冷却路段 
11进口侧             26卷取站 
12纵向方向           27卷盘 
13第一个辊列         28工序路线 
13a辊子              29多路连铸设备 
14出口侧             39在纵向方向上工作的辊底 
15第二个辊列           加热炉 
16缓冲区 

Claims (7)

1.用于对连铸产品(2)进行加热和/或热平衡的辊底加热炉(1)，所述连铸产品由钢或者钢材料组成并按适合于炉子的分段长度(10)在辊子(13a)上通过炉腔输入和又输出，其中，在一个进口侧(11)设有第一个、布置在炉子(1)的纵向方向(12)上的由辊子(13a)组成的辊列(13)，辊子的长度相当于连铸产品(2)的宽度；在一个出口侧(14)设有第二个辊列(15)，它平行于第一个辊列(13)；而且在第一和第二个辊列(13，15)之间设有一个缓冲区(16)，该缓冲区具有提升元件(17)用于连铸产品(2)的横向运输，其特征在于，第一个布置于炉子(1)纵向方向(12)上的辊列(13)和/或第二个辊列(15)分别形成一个加热区(19)。
2.按权利要求1所述的辊底加热炉，其特征在于，在缓冲区(16)里设有另外一个可接入的加热区(19)和/或一个保温区。
3.按权利要求1或2所述的辊底加热炉，其特征在于，提升元件(17)由提升横梁(17a)组成。
4.在将液体金属连续铸造成板坯条或者扁平的薄条(3)-所谓薄板坯时应用一种按权利要求1至3中之一所述的辊底加热炉(1)的方法，这些薄板坯在辊底加热炉(1)里加热和/或温度平衡之后在一个热辊带精轧机列(23)中被轧制成热轧带(24)并使之冷却并在一个卷取站(26)里被卷绕成卷盘(27)，其特征在于，在一个多路连铸设备(29)中设有一个共同的辊底加热炉(1)或者每个连铸线分别设有一个分开的辊底加热炉(1)，每个连铸线分别具有由辊列(13；15)组成的一个进口侧(11)和一个平行的出口侧(14)和一个位于它们之间的缓冲区(16)，该缓冲区由提升元件(17)组成用于随后的共同的工序路线(28)。
5.按权利要求4所述的方法，其特征在于，一个共同设定用于双路连铸设备(29)的辊底加热炉(1)的出口侧(14)置于随后工序路线(28)的线路中，因此二个具有相同辊列(13，13)的进口侧(11)和具有一个辊列(15)的位于中间的出口侧(14)具有镜影的位置。
6.按照权利要求4所述的方法，其特征在于，对于一种多路连铸设备(29)和一种各自分开的辊底加热炉(1)设有一个使二个辊底加热炉(1，1)运行连接起来的“渡船”(20)连接于出口侧(14)并设于随后的工序路线(28)之前。
7.按权利要求4所述的方法，其特征在于，除了一个右连铸线的第一辊底加热炉(1)之外，所述第一辊底加热炉具有一个进口侧和出口侧(11，14)和一个位于它们之间的由提升元件(17)组成的缓冲区(16)，使用一个在纵向方向(12)上平行工作的左连铸线的第二辊底加热炉(30)；而且第一辊底加热炉(1)与第二辊底加热炉(30)连接于另外一个、与随后的工序路线(28)相连的第三辊底加热炉，该第三辊底加热炉具有进口侧(11)和平行的出口侧(14)和一个位于它们之间的由提升元件(17)组成的缓冲区(18)。
CN2006800524994A 2006-02-08 2006-12-18 用于对由钢或者合金钢组成的连铸产品进行加热和/或温度平衡的辊底加热炉及其辊底加热炉的使用方法 Active CN101365918B (zh)

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