CN101107378A - 热浸镀的热轧钢带的受控厚度减薄及其中所用的设备 - Google Patents
热浸镀的热轧钢带的受控厚度减薄及其中所用的设备 Download PDFInfo
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Abstract
本发明涉及用于热浸镀热轧钢带的方法,其中该钢带经过酸洗站、冲洗站、干燥站、加热炉并且然后经过熔池。热浸镀钢带的最终厚度和厚度公差通过生产线中轧机机座内的受控厚度减薄而实现。最终厚度的实现通过轧机机座出口处的至少一个测厚仪控制,并且向上或向下的任何偏差以致动信号的形式反馈,用于致动轧机机座,以便相应地增加或减小该厚度减薄。本发明还涉及一种用于制造上述类型的热轧钢带的设备。
Description
技术领域
本发明涉及用于热浸镀(热浸精整)的热轧钢带的受控厚度减薄的方法以及相应的设备,以下将对其进行详细的介绍。
背景技术
目前有三种方式制造热浸镀产品。
如果对表面质量和尺寸精度具有严格的要求,则冷轧钢带要进行再结晶退火,随后热浸镀,接着进行平整和/或拉伸并轧平钢板。
在具有类似的要求时,已经预先进行了热浸镀的热轧钢带在单独的冷轧机上减小到尺寸精度。
第三种可能是,当对表面质量和尺寸精度的要求不高时,热轧钢带在去除轧屑后进行热浸镀,接着进行平整和/或拉伸并轧平钢板。
根据德国Düsseldorf的Verlag StahlEisen出版的Stahl-Lexikon【SteelLexicon】第25版第134页和139页,术语“平整”是指冷精轧,也就是说,在前面的热处理或热操作后对钢带进行轻微的冷轧,其中厚度减薄量为0.5%到3%。
欧洲专利申请EP1203106B1=US专利申请6,761,936=WO 01/011099A2公开了一种用于热轧镀层钢带的热浸镀锌方法,其中在第一步中,该钢带被引入到酸洗站中,在接下来的步骤中,该钢带被引入到冲洗站中,然后被引入到干燥站中,在另一步骤中,其被引入到镀锌炉并被镀锌,其中上述操作步骤是在密封于环境中的空气和氧气的情况下进行的。
发明内容
本发明的目的是:能够进一步在生产线上直接处理钢带,并且在制造这种热浸精整的热轧钢带时使钢带受到专门的厚度减薄处理。
该目的借助权利要求1的特征来实现。
因此,本发明涉及用于热轧钢带的热浸镀的方法,其中该钢带经过酸洗站、冲洗站、干燥站、加热炉并且然后经过熔池,所述方法的特征在于,热浸镀钢带的最终厚度和厚度公差通过生产线中轧机机座内的受控厚度减薄而实现,其中位于轧机机座出口处的至少一个测厚仪检查是否达到最终厚度,并且向上或向下的任何偏差被作为控制信号反馈,用于调节轧机机座,使得能够相应地增加或减小该厚度减薄。
在根据现有技术的平整中,热浸精整过的钢带在生产线上进行拉长,从而在平整轧机机座中实现厚度减薄,目的是获得沿着钢带的长度方向均匀变长的钢带截面。所以,为了进行控制,测量并估计进入和退出速度,作为均匀变长或厚度减薄的测定量。
与此相反,根据本发明的方法的技术焦点在于热浸精整后系统地并且受控地调节生产线中轧机机座内的最终厚度和公差。
与平整的区别在于:例如,进入厚度增加时轧机机座中的厚度减薄增加以保持最终厚度,并且退出速度(在恒定的进入速度下)增大。在进入厚度较薄时也是如此。从而,平整轧机机座不使用测厚仪来调节,而根据本发明的方法在任一情形下都进行调节。
而且,当采用这些不同的厚度减薄方法时,如一方面在平整技术(现有技术)中另一方面在根据本发明的方法中沿着热轧钢带卷的带长的厚度记录能够看出,它们制造的产品彼此大不相同。
上述测厚仪例如由德国Erlangen的Thermo Electron(Erlangen)GmbH制造并以Radiometrie RM 200 EM的牌号与应用软件和硬件一起销售。这些测厚仪优选地位于紧挨着热轧机机座的下游处并且特别地也可位于其上游处,以便调节用于厚度减薄的热浸精整热轧钢带的轧制力。
根据另一优选实施方式,测量钢带的进入厚度并将该值报告给轧机机座厚度调节装置的测厚仪设置在轧机机座上游。
根据本方法的一个优选实施方式,厚度减薄处于大于2%到30%的范围内,优选地4%到10%的范围。在这种厚度减薄下,相对于钢带中心的厚度公差为±0.01mm或更好。
根据本发明的优选实施方式,在钢带冷却到25℃到55℃、特别是30℃到50℃之后进行厚度减薄。
在本发明中术语钢带是指例如DIN EN 10111中牌号为DD11到DD14的用于冷轧的热轧低碳钢以及DIN EN 10 025中所述类型的热轧非合金通用构造钢等级。
根据另一优选实施方式,在轧机机座的上游和/或下游设置带缓冲区,使得厚度调节装置能够补偿速度波动。这里,它们是特别微小的带缓冲区,由该带缓冲区能够特别好地补偿所出现的速度波动。
根据另一优选实施方式,轧机机座中的至少一个工作辊是平滑的或者具有结构化表面,该结构化表面具有专门磨片(Schliff)和/或随机的或确定的结构。
圆柱形磨片以及冠状磨片能够作为专门的磨片,其具有根据本发明的功能,并且能够用于满足消费者的需求。
为了在钢带上形成粗糙的表面,能够采用随机结构,例如已知的喷丸毛化(SBT)、电火花毛化(EDT)、电化学毛化(ECT)和精度毛化(SalzgitterAG的PRETEX工艺)。此外,激光毛化(LT)和电子束毛化(EBT)能够用于在工作辊上形成确定的弹坑状结构。
根据另一优选实施方式,在具有轧制流体时厚度减薄。这种轧制流体或者是挥发性金属工作试剂、软化水、合成轧制油或者是轧制乳剂,所有这些改善了辊隙中的摩擦特性(被轧制材料与辊之间的摩擦状况)。
通常使用大约0.2g/m2到5g/m2量的这种润滑剂。
根据另一优选的实施方式,热浸镀层是具有锌合金或铝合金的镀层。这里所引述的实施例是锌、锌-铁、锌-铝、铝-锌或铝-硅,优选地为锌和锌合金。
根据另一优选实施方式,钢带在排除空气和氧气的情况下经过酸洗站、冲洗站、干燥站和熔池。为了避免重复,这里参照SMS Demag AG,Rn0011-0025的欧洲专利EP 1203106 B2。
本发明的主题还在于提供一种用于制造专门的热浸镀热轧钢带的设备。
因此,本发明涉及一种用于制造上述类型的热浸镀热轧钢带的设备,其包括酸洗站、冲洗站、干燥站、加热炉和熔池,其特征在于,出口处具有至少一个测厚仪的轧机机座设置在生产线中,从而优选地进行大于2%到30%、特别地4%到10%的受控厚度减薄,可选地与利用专门磨片和/或随机的或确定的结构滚压钢带一起进行该受控厚度减薄。
下面将参照实施方式更详细地说明本发明。
具体实施方式
实施例1:受控厚度减薄
在生产线中进行上述类型的热浸镀后,牌号为EN 10111-DD11的用于冷轧的热轧低碳钢受到约6.5%的受控厚度减薄。在此过程中,屈服点(Rp0.2)增加到80N/mm2,最终抗拉强度(Rm)增加到30N/mm2,与此相对地,钢带的伸长率(A80,均匀伸长)减小10%,也就是说,从30%降低到20%。
以此为基础,低碳钢带EN 10111-DD11形成了具有镀锌质量的钢,例如EN 10327的DX51D或EN 10326的S320GD,其具有与根据EN标准同样牌号的镀锌钢带相同的材料特性。在受控厚度减薄期间,记录钢带沿着热轧钢带卷的长度方向的厚度。
从而,在具有受控厚度减薄的1.548m的长度上实现1.5mm的平均板厚,该板厚具有少见的极大值1.588mm和极小值1.497mm,其2σ公差范围为0.014mm。
对比实施例(借助于平整进行厚度减薄)
重复实施例1,只是不是进行受控厚度减薄,而是进行1%的平整。与实施例1类似,记录钢带沿着热轧钢带卷的长度方向的厚度。
从而,以1.700mm为目标值在1.455m的长度上实现了1.704mm的平均厚度,该厚度具有极大值1.809mm和极小值1.664mm,其2σ公差范围为0.032mm。这已经表示出,相对于根据本发明的受控厚度减薄,平整相当不利。
特征的对比表示出,在平整状态(现有技术)中和在根据本发明的方法中沿着热轧钢带卷的长度方向记录的钢带厚度彼此相当不同,并且根据本发明方法以几乎6.5倍高的厚度减薄所获得的产品是具有明显更小的厚度公差的热轧钢带卷。
Claims (10)
1.一种用于热轧钢带的热浸镀方法,其中该钢带经过酸洗站、冲洗站、干燥站、加热炉并且然后经过熔池,其特征在于,热浸镀钢带的最终厚度和厚度公差通过生产线中轧机机座内的受控厚度减薄而实现,其中位于轧机机座出口处的至少一个测厚仪检查是否达到最终厚度,并且向上或向下的任何偏差被作为控制信号反馈,用于调节轧机机座,使得能够相应地增加或减小该厚度减薄。
2.根据权利要求1所述的方法,其特征在于,所述厚度减薄处于大于2%到30%的范围内,优选地为4%到10%。
3.根据权利要求1所述的方法,其特征在于,在钢带冷却到25℃到55℃、特别是30℃到50℃之后进行厚度减薄。
4.根据前述权利要求中任一项所述的方法,其特征在于,测量钢带的进入厚度并将该值报告给轧机机座的厚度调节装置的测厚仪设置在轧机机座上游。
5.根据权利要求1到4中任一项所述的方法,其特征在于,在轧机机座的上游和/或下游设置带缓冲区,使得厚度调节装置能够补偿速度波动。
6.根据权利要求1所述的方法,其特征在于,轧机机座中的至少一个工作辊是平滑的或者具有结构化表面,该结构化表面具有专门磨片结构和/或随机的或确定的结构。
7.根据权利要求1到6中任一项所述的方法,其特征在于,在具有轧制流体时厚度减薄。
8.根据权利要求1所述的方法,其特征在于,热浸镀层是具有锌合金或铝合金的镀层,优选地为锌及其合金。
9.根据权利要求1或8所述的方法,其特征在于,钢带在排除空气和氧气的情况下经过酸洗站、冲洗站、干燥站和熔池。
10.一种用于制造特别是根据权利要求1到9所获得的热浸镀热轧钢带的设备,包括酸洗站、冲洗站、干燥站、加热炉和熔池,其特征在于,出口处具有至少一个测厚仪的轧机机座设置在生产线中,从而优选地进行大于2%到30%、特别地4%到10%的受控厚度减薄,可选地与利用专门磨片和/或随机的或确定的结构滚压钢带一起进行该受控厚度减薄。
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DE102005013103A DE102005013103A1 (de) | 2005-03-18 | 2005-03-18 | Kontrollierte Dickenreduktion bei schmelztauchbeschichtetem warmgewalztem Stahlband und hierbei eingesetzte Anlage |
PCT/EP2006/002155 WO2006097237A1 (de) | 2005-03-18 | 2006-03-09 | Kontrollierte dickenreduktion bei schmelztauchbeschichtetem warmgewalztem stahlband und hierbei eingesetzte anlage |
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AT (1) | ATE419408T1 (zh) |
DE (2) | DE102005013103A1 (zh) |
PL (1) | PL1861517T3 (zh) |
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CN105886990A (zh) * | 2016-04-18 | 2016-08-24 | 法尔胜泓昇集团有限公司 | 一种钢丝镀锌厚度的控制方法及装置 |
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- 2006-03-09 DE DE502006002498T patent/DE502006002498D1/de active Active
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CN102465246A (zh) * | 2010-11-18 | 2012-05-23 | 宝山钢铁股份有限公司 | 一种用于在连续热镀锌机组中测量锌层厚度的装置和方法 |
CN102465246B (zh) * | 2010-11-18 | 2013-06-19 | 宝山钢铁股份有限公司 | 一种用于在连续热镀锌机组中测量锌层厚度的装置和方法 |
CN106460136A (zh) * | 2014-03-31 | 2017-02-22 | 首要金属科技奥地利有限责任公司 | 用于金属带的酸洗和金属涂覆的设备和方法 |
CN105886990A (zh) * | 2016-04-18 | 2016-08-24 | 法尔胜泓昇集团有限公司 | 一种钢丝镀锌厚度的控制方法及装置 |
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EP1861517A1 (de) | 2007-12-05 |
PL1861517T3 (pl) | 2009-06-30 |
US8163348B2 (en) | 2012-04-24 |
RU2409698C2 (ru) | 2011-01-20 |
RU2007121258A (ru) | 2008-12-20 |
ATE419408T1 (de) | 2009-01-15 |
DE102005013103A1 (de) | 2006-09-28 |
US20120213932A1 (en) | 2012-08-23 |
US8703242B2 (en) | 2014-04-22 |
EP1861517B1 (de) | 2008-12-31 |
US20080193655A1 (en) | 2008-08-14 |
JP2008533300A (ja) | 2008-08-21 |
CN101107378B (zh) | 2010-05-19 |
WO2006097237A1 (de) | 2006-09-21 |
DE502006002498D1 (de) | 2009-02-12 |
JP4866897B2 (ja) | 2012-02-01 |
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