CN1414887A - 热轧薄钢带 - Google Patents

热轧薄钢带 Download PDF

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CN1414887A
CN1414887A CN00818167A CN00818167A CN1414887A CN 1414887 A CN1414887 A CN 1414887A CN 00818167 A CN00818167 A CN 00818167A CN 00818167 A CN00818167 A CN 00818167A CN 1414887 A CN1414887 A CN 1414887A
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steel band
roll
working roll
guiding roller
gap
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CN1210116C (zh
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加藤平二
迈克尔·A·洛佩斯
约翰·A·齐格拉尔
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CASTLIP Co
Castrip LLC
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CASTLIP Co
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B37/00Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/28Control of flatness or profile during rolling of strip, sheets or plates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/463Metal-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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22Metal-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 plates, strips, bands or sheets of indefinite length
    • B21B2001/225Metal-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 plates, strips, bands or sheets of indefinite length by hot-rolling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B15/00Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0071Levelling the rolled product
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B39/00Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/006Pinch roll sets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B39/00Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B21B39/08Braking or tensioning arrangements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B45/00Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/008Heat shields
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Continuous Casting (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)

Abstract

薄钢带(11)通过包括夹送辊(13)的夹送辊机架(12)而传送到包括工作辊(17)和承压辊(18)的热轧机(16)。在轧制机(16)之前,钢带穿过支撑辊(15)。刚好位于轧制机(16)之前的抗卷曲导引辊(21)安装到一对摇杆构件(22)上,以便能够从较低的非工作位置升高,以将钢带抬离直线路径,从而围绕抗卷曲辊传送,并通过至少10°的包角缠绕在辊隙(26)之前的上工作辊(17)。由于钢带围绕上工作辊(17),该辊支承钢带并阻止钢带翘曲和卷曲缺陷的产生。

Description

热轧薄钢带
                        技术领域
本发明涉及薄钢带的热轧,其尤其但不专门应用于由双辊钢带铸造机生产的薄钢带的联机热轧。
                        背景技术
双辊钢带铸造的最近发展已经能够使所生产的钢带厚度为5mm左右或更薄。这种钢带通过随着钢带被铸造机生产而在联机热轧机中减薄而可以进一步减小厚度。已经发现当热轧钢带厚度为3mm左右或更小时,由于钢带材料在进入轧薄辊时卷曲而在钢带中产生明显的缺陷。这种卷曲缺陷可能较小,并呈现为钢带表面上可见到的曲线。然而,尤其是当轧制非常薄的钢带时,在轧制之前钢带卷曲的部分会变成折叠到一起,从而钢带的该部分被严重减薄并裂口,导致非常严重的缺陷。
卷曲缺陷是由于在钢带宽度上钢带的减薄不同而造成,典型地是,钢带的中心部分比钢带边缘承受更大比例的减薄,这取决于进入的钢带外形。因此,钢带的中心部分将承受长度方向的压缩,而边缘将承受拉伸。这导致钢带的中心部分相对边缘向后滑移,从而,钢带的中心相对边缘被向后推,而产生了翘曲。然后,该翘曲被轧到钢带内部,而在表面上形成标记。在极端的情况下,钢带在翘曲处会完全折叠,并且折叠起来的材料被轧入内部,而形成严重缺陷。在钢带宽度上钢带减薄的不同可以局限到钢带宽度的一小部分上。这可以导致钢带的局部卷曲。卷曲程度与钢带宽度上减薄的差异大小以及受减薄不同而影响的钢带宽度的大小相关。
钢带的卷曲受钢带拉伸的影响,并且在一些应用中,有可能通过利用较大的钢带拉伸而控制卷曲缺陷。然而,高温下在非常薄的钢带中利用较大的拉伸并不总是可行的。由于很小的拉力或不能将拉力施加到从铸造模具中排出的钢带上,因此难于将较大的拉伸施加到从钢带铸造机中排出的钢带上。钢带在传送到联机滚轧机之前,可以悬挂成自由环形,并且处于低拉伸状态下。本发明提供了一种方法和装置,通过他们,可以基本上控制卷曲缺陷,而不需较大的钢带拉伸。
                        发明内容
根据本发明,提供了一种热轧薄钢带的方法,其包括:将钢带通过一对工作辊之间的辊隙供给,并在工作辊之间施加钢带挤压力,其中,在工作辊之前钢带围绕导引辊运行,导引辊使钢带在进入工作辊之间的辊隙中之前缠绕到一个工作辊上。
优选地是,钢带通过至少10°的包角缠绕在所述一个工作辊上,包角例如可以在20°到45°的范围内。
优选地是,工作辊一个在另一个之上地设置,在该情况下,所述导引辊可以定位成将钢带从通向辊隙的水平路径向上导引,并然后在进入辊隙之前围绕上工作辊向下导引。
本发明也提供了钢带轧制装置,包括:
一对工作辊,在他们之间限定了辊隙以接收要被轧制的钢带;
将挤压力施加到工作辊之间的装置;以及
将钢带导引到辊隙的导引辊,使得钢带在进入辊隙之前缠绕在一个工作辊上。
优选地是,工作辊一个在另一个之上地设置,而导引辊在较低位置和升高的工作位置之间移动,在较低位置,钢带可以在导引辊之上、在水平路径中被传送到工作辊之间的辊隙,而在升高的工作位置,导引辊将钢带升高到所述水平路径之上,以使钢带在辊隙之前缠绕到上工作辊上。
                        附图说明
为了更全面地解释本发明,将参照附图详细描述本发明的特定实施例,图中:
图1示出了用于轧制薄钢带的钢带碾压设备的一部分;以及
图2是图1中线2-2上的横截面;
图3示意性地示出了在该装置中的抗弯曲辊的工作原理。
                        具体实施方式
在所示的轧制机设备中,薄钢带11穿过包括一对夹送辊13的夹送辊机架12,钢带夹紧力通过一对液压缸单元14施加到夹送辊13上,夹送辊机架的每一侧上设置一个液压缸单元14。
在穿过夹送辊机架12后,钢带11支承在由一系列辊15形成的工作台上,钢带通过该工作台传送到轧制机16,轧制机包括一对一个设置在另一个之上的工作辊17和一对上和下承压辊18。钢带减薄的力通过液压缸单元(未示出)施加到工作辊17之间,液压缸单元设置在轧制机的两侧并通过上承压辊18起作用。在夹送辊机架12和轧制机机架16之间,钢带被保持在密封的机壳19中。
根据本发明,该设备包括抗卷曲导引辊21,其刚好位于轧制机16之前,并安装到一对摇杆构件22上,摇杆构件22可以通过液压缸30的致动而围绕水平枢轴23枢转,液压缸30通过机械连杆机构31作用在摇杆构件上,从而使抗卷曲辊能够升高并降低。抗卷曲辊21具有较低的非工作位置(在图1中由虚线标示),在该位置处,钢带可以水平地直接传送到轧制机的工作辊17之间的辊隙26中。抗卷曲辊21然后可以通过液压缸30的工作而升高,以将钢带抬离其直线水平路径,从而,钢带围绕抗卷曲辊传送,并在辊隙26之前缠绕在上工作辊17上。
抗卷曲辊枢轴23被支承在机壳19侧壁中的承载支架中,且该轴的一端穿过旋转密封,以与连杆机构31相连,从而液压缸30工作时,轴可以由连杆机构31转动。液压缸30的有效形成可以通过操纵电螺旋起重器来设定挡块33而调节,以便调节处于升高位置的抗卷曲辊21的高度。
为了在抗卷曲辊21升高时,保持钢带下落到工作台辊15上,刚好在一个工作台辊15之后,上轧制线辊27向下与钢带形成接合。辊27安装到摇臂34上,摇臂34从连接到一端的枢轴35延伸到位于机壳19外侧的杠杆臂36上,并可以由液压缸37致动,以转动轴35,由此升高和降低上轧制线辊27。
已经发现抗卷曲辊在实际中高效地减少了卷曲缺陷,即使在非常薄的钢带中。由于钢带围绕上工作辊缠绕,工作辊支撑钢带并阻止钢带的翘曲。钢带围绕上工作辊的曲率也可以增大对钢带在辊隙之前的关键区域内的横向翘曲的抵抗能力,这是由于钢带在该区域内的有效的弯曲形状所导致的。
已经发现为了更有效的抗卷曲作用,钢带应该通过至少10°的包角缠绕上工作辊,而优选地在20°到45°的范围内。在典型的设备中,工作辊直径可以在400mm到700mm范围内,而抗卷曲辊可以定位成将钢带升高到通过工作辊之间的辊隙的水平面之上的150mm到250mm之间。

Claims (9)

1.一种热轧薄钢带的方法,包括:将钢带通过一对工作辊之间的辊隙供给,并在工作辊之间施加钢带挤压力,其中,在工作辊之前钢带围绕导引辊运行,导引辊使钢带在进入工作辊之间的辊隙中之前缠绕到一个工作辊上。
2.如权利要求1所述的方法,其中,钢带通过至少10°的包角围绕所述一个工作辊缠绕。
3.如权利要求2所述的方法,其中,包角在20°到45°的范围内。
4.如权利要求1到3中任一项所述的方法,其中,工作辊一个在另一个之上地设置。
5.如权利要求4所述的方法,其中,所述导引辊定位成将钢带从通向辊隙的水平路径向上导引,并然后在辊隙之前围绕上工作辊向下导引。
6.一种钢带轧制装置,包括:
一对工作辊,在他们之间限定了辊隙以接收要被轧制的钢带;
将挤压力施加到工作辊之间的装置;以及
将钢带导引到工作辊之间的辊隙的导引辊,使得钢带在进入辊隙之前缠绕在一个工作辊上。
7.如权利要求6所述的装置,其中,导引辊可定位成导引钢带使得钢带通过至少10°的包角缠绕到所述一个工作辊上。
8.如权利要求7所述的装置,其中,导引辊可定位成导引钢带使得钢带通过20°到45°范围内的包角缠绕到所述一个工作辊上。
9.如权利要求6到8中任一项所述的装置,其中,工作辊一个在另一个之上地设置,而导引辊可以在较低位置和升高的工作位置之间移动,在较低位置,钢带可以在导引辊之上、在水平路径中被传送到工作辊之间的辊隙,而在升高的工作位置,导引辊将钢带升高到所述水平路径之上,以使钢带在辊隙之前缠绕到上工作辊上。
CNB008181675A 1999-11-30 2000-11-30 热轧薄钢带的方法及其装置 Expired - Fee Related CN1210116C (zh)

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AUPQ4363 1999-12-01
AUPQ4363A AUPQ436399A0 (en) 1999-12-01 1999-12-01 Hot rolling thin strip

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CN1414887A true CN1414887A (zh) 2003-04-30
CN1210116C CN1210116C (zh) 2005-07-13

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EP (1) EP1265717B1 (zh)
JP (1) JP4452010B2 (zh)
KR (1) KR100710426B1 (zh)
CN (1) CN1210116C (zh)
AT (1) ATE286788T1 (zh)
AU (1) AUPQ436399A0 (zh)
BR (1) BR0016002A (zh)
CA (1) CA2392825C (zh)
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US9534189B2 (en) * 2006-05-24 2017-01-03 Nalco Company Hydraulic fluids and fire-resistant fluids comprising glycerin containing by-products
US7207202B1 (en) 2006-05-30 2007-04-24 Morgan Construction Company Method of subdividing and decelerating hot rolled long products
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CN101322976B (zh) * 2008-06-30 2010-06-02 常熟市双华电子有限公司 四辊冷轧机
JP5240250B2 (ja) * 2010-01-13 2013-07-17 富士ゼロックス株式会社 清掃部材、帯電装置、画像形成装置用のユニット、プロセスカートリッジ、及び画像形成装置
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AUPQ436399A0 (en) 1999-12-23
US6745607B2 (en) 2004-06-08
RU2002117289A (ru) 2004-01-20
CA2392825C (en) 2009-10-13
CA2392825A1 (en) 2001-06-07
JP2003515453A (ja) 2003-05-07
RU2257971C2 (ru) 2005-08-10
EP1265717A4 (en) 2003-07-23
EP1265717A1 (en) 2002-12-18
DE60017469T2 (de) 2005-12-22
MY125324A (en) 2006-07-31
CN1210116C (zh) 2005-07-13
TW529971B (en) 2003-05-01
US20030167818A1 (en) 2003-09-11
KR100710426B1 (ko) 2007-04-24
BR0016002A (pt) 2002-07-23
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KR20020060770A (ko) 2002-07-18
WO2001039905A1 (en) 2001-06-07

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