CN106103783A - 用于热浸镀热轧钢带的方法和设备 - Google Patents
用于热浸镀热轧钢带的方法和设备 Download PDFInfo
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- 238000005097 cold rolling Methods 0.000 claims description 43
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Abstract
本发明涉及一种用于优选地在连续的生产线中制造热浸镀热轧钢带(2)的方法和设备(1;100),该设备包括:带材预处理装置(3),其用于优选地通过酸洗、冲洗和烘干去除鳞皮酸洗;冷成型装置(8;11),其用于优选地通过冷轧带材减少带材厚度;和紧接的后处理装置,例如通过拉伸弯曲矫直和/或化学后处理。为了可达到高品质的镀锌带材和带材表面,首先紧随着用于为热轧带材清除鳞皮的带材预处理装置(3)的是厚度压下装置(8),在其中,带材厚度减少小于30%,优选减少0.5%至10%,并且然后在该厚度压下装置之后是带材镀锌装置(7),在其中,热轧带材穿过熔池(9)。
Description
技术领域
本发明涉及一种用于优选地在连续的带材设备中热浸镀热轧钢带的方法,在其中,对热轧带材进行用于去除鳞皮的预处理、镀锌、通过冷成型减少其厚度并且进行后处理。除此之外,本发明还涉及一种用于制造热浸镀热轧钢带的设备。
背景技术
对热轧带材清除鳞皮(预处理)作为冷成型和镀锌的前提条件优选地通过酸洗、冲洗和烘干来进行。例如可设有拉矫机和/或化学处理系统以进行后处理。
通过文献WO2006/097237 A1(EP 1 861 517 B1)已知一种用于热浸镀热轧钢带的方法和设备,以改善在镀锌之后执行的受控的厚度减少的厚度公差。为此,在生产线中设有轧机,其中,通过在轧机的出口中的至少一个厚度测量仪来控制达到的成品厚度,并且将与该成品厚度的正偏差或负偏差作为调节信号反馈给轧机的调节装置,以相应地增加或降低厚度减少。这在连续的生产线中进行,在其中,首先通过去除鳞皮(例如借助破鳞机)以及酸洗和冲洗预处理钢带,然后在钢带经历最后的后处理之前(如通过拉矫机和化学处理),使钢带穿过镀锌装置,紧接着该镀锌装置的是轧机,该轧机在出口还具有用于受控的厚度减少的厚度测量仪。这样制造的成品在例如具有带材贮料器和修边剪的离开部分中卷取成具有预期直径的带材卷。
在该已知的方法中存在技术上的缺点,其可单独地或总地不利地影响生产高品质的镀锌带材表面。缺点可为,对于镀锌来说必须接受由带材的预制过程带来的带材粗糙度。这在带材表面非常粗糙并且镀层特别薄的情况下可导致出现表面问题。此外,在通过在辊隙中的必需的高压强来受控地进行厚度减少以达到所期望的在2%至30%、优选为4%至10%的范围中的减少量的情况下,在硬得多的钢带上的软的锌镀层严重受载,这可导致锌颗粒的剥落加剧,锌颗粒作为污物沉积在带材表面上,并且使得带材清洁度对于后续工艺来说变差。最后存在如下风险,即,锌镀层不得不经受通过钢基底材料的厚度减少而带来的由于拉伸使得带材表面增大,锌镀层受损,例如撕裂,这破坏了锌镀层的防腐蚀作用。
发明内容
因此,本发明的目的在于,提供一种开头提及的类型的方法和设备,利用其可实现高品质的镀锌带材和带材表面,而没有所提及的缺点。
该目的通过根据本发明的方法由此来实现,即,使已清除鳞皮的热轧带材在发生于镀锌之前的工艺步骤中冷成型,其中,使热轧带材的带材厚度减小少于30%,优选地减小0.5%至10%。
在此,关于执行该方法需考虑,不仅直接地根据带材厚度在冷成型前与冷成型后的百分比比例、而且间接地例如根据测量和换算的在冷成型前与冷成型后的带材速度的比例可确定冷成型的参数和带材厚度的减少(在实际中已知是平整度)。对于关于厚度减少的下文所有的说明来说,这意味着,小于30%的厚度减少对应于小于43%的平整度,并且优选为0.5%至10%的范围的厚度减少等同于0.5%至11.1%的平整度范围。
在此,一种优选的方法措施规定,在冷成型时,优选地通过冷轧工艺,在冷轧机中在使用具有平均粗糙度值Ra小于10μm、优选为0.2μm至3μm的表面结构的工作辊的情况下给带材压印表面结构。
如果根据本发明的另一提议,在镀锌之前,测量冷成型的带材的厚度,并且反馈与理论厚度的偏差作为用于冷成型的厚度减少的调节量,可达到受控的厚度减少。
根据本发明的另一提议规定,在镀锌之前,控制冷成型的参数、优选为厚度减少的量,并且将其调节到理论值。通过调节冷成型的参数(这还包括由在冷轧机构的入口和出口的带材速度的差得出的平整度),在使用的热轧带材具有相应很窄的热轧带材厚度公差的情况下,受控的厚度调节变得多余。在该变型中,通过沿带材长度此时恒定的冷成型得到了改善的恒定的材料性能,例如屈服极限、抗拉强度和断裂伸长率,这在受控的厚度减小的情况下是不可能实现的。
在根据本发明的方法变型中也是如此,因此在紧接着镀锌的另一冷成型中,在冷轧机构中,通过使用表面结构化的工作辊以小于3%、优选为0.5%至2%的平整度进行平整来将成品的带材表面结构施加到带材表面上。
根据本发明的另一提议,利用紧接着镀锌的另一冷成型,通过冷轧使带材厚度减少小于30%,优选减少4%至10%,其中,至少在该另一带材成型之后测量带材厚度,并且将与理论带材厚度的偏差作为调节量输送给冷成型。
根据本发明的另一提议,在所述镀锌之后,可控制冷成型的参数以减少带材厚度,并且将该参数调节到理论值,在使用的热轧带材具有相应很窄的热轧带材厚度公差的情况下,这使得受控的厚度调节变得多余。
在镀锌之后的冷成型中使用平均粗糙度值小于10μm、优选为0.2μm至3μm的工作辊,并且在此,工作辊给带材表面压印成品的表面结构。因此,根据本发明的方法提出了前提条件,即,在镀锌之前通过冷成型将带材粗糙度调节到要求的值,和/或在镀锌之前通过冷轧减少厚度公差,和/或在镀锌之前通过冷轧将带材厚度减少到期望的大小,其中,与前置的冷成型相协调地,可通过在镀锌之后的另一冷成型调节或补充上述各个参数,即带材粗糙度、带材厚度公差和带材厚度。在此,可利用在镀锌之前或镀锌之后的至少一个受控的厚度调节,或者在没有受控的厚度减少的情况下通过调节冷成型、更确切地说是平整度的参数执行热轧带材镀锌。
在此在根据本发明的方法变型的范围中的是,有利地设有半连续的工艺流程,在其中,在与镀锌线分离的、转移出去的处理线中执行发生于镀锌之前的各个工艺步骤,如带材预处理和/或冷成型,其中,在镀锌线中除了镀上锌层之外还可进行在镀锌之后的冷成型和带材的后处理。因此,在带材到达具有接下来的后续处理(如拉矫、钝化等)的镀锌线之前,例如可在分开的酸洗线中执行去除鳞皮工艺,或者在分开的冷轧机构中执行冷轧工艺。
一种尤其适用于执行该方法的、用于制造热浸镀热轧钢带的设备的特征在于,热轧带材穿过用于去除鳞皮的带材预处理装置,接下来通过冷成型使带材厚度减少小于30%,优选减少0.5%至10%,并且然后紧接着冷成型使带材穿过带材镀锌装置,在其中,带材穿过熔池。
根据本发明的一种优选的实施方案,厚度压下装置实施成冷轧机,在出口给该冷轧机配有至少一个测量仪,以反馈厚度调节信号给冷轧机。
本发明的另外的有利的实施方案规定,为了厚度减少,利用冷轧机构执行冷成型,在冷轧机构中,在另一优选的实施方案中,在冷轧机构的出口中布置有至少一个测量仪,并且或者将与理论厚度的偏差作为调节信号反馈以用于冷轧机构的厚度调节,或者冷轧机构调节成将厚度减少量调节成恒定的。
关于热轧镀锌的工作方式的方案扩展和变型,根据本发明提出,紧接着带材镀锌装置的是实施为冷轧机的另一厚度压下装置,在其中,带材厚度减少小于30%,优选减少0.5%至10%,其中,在出口处至少给该另一冷轧机配有至少一个测量仪,以反馈测量信号用于厚度调节。
根据本发明的一种可选的提议,紧接着带材镀锌装置的是实施为平整机的另一厚度压下装置,其中,平整度小于3%、优选为0.5%至2%。
根据本发明的一种有利的设计方案,在厚度压下装置中在冷成型时为了压印成品的带材表面结构而使用工作辊,工作辊具有平均粗糙度值Ra小于5μm、优选为0.2μm至3μm的表面结构。
根据本发明的一种实施方式,针对半连续的工艺流程,设有与镀锌线隔开的、用于带材预处理和/或冷成型的、单独的生产线,从该生产线中将预处理并且冷成型的带材输送给具有集成的带材处理装置的镀锌线。
附图说明
从权利要求和对在附图中示出的本发明的实施例的下文的说明中得出本发明的另外的特征和细节。其中:
图1示出了用于热轧带材镀锌的连续的生产线的原理图,其中,在镀锌之前进行冷成型;以及
图2示出了用于热轧带材镀锌的半连续的生产线的原理图,其中,在镀锌之前进行冷成型。
具体实施方式
在图1中示例性地示出的、在连续运行中工作的热浸镀设备1中,首先将需处理的、热轧钢带2从例如配备有未示出的矫直机和带材贮料器的进入部分ET输送至带材预处理装置3,该带材预处理装置为了去除钢带或带材2的鳞皮而具有破鳞机4或类似装置以及酸洗池5和冲洗池6。在钢带或热轧带材2在用于镀上镀层的带材镀锌装置7中穿过熔池9之前,紧接着带材预处理装置3的是热浸镀设备1的用虚线包围或强调的核心部分,亦即连接在带材镀锌装置7之前的厚度压下装置8,该厚度压下装置实施为冷轧机构KWW作为冷成型的优选形式。
在冷轧机构KWW的出口,示例性地布置有至少一个厚度测量仪10,其中,反馈测量信号给冷轧机构以在测量到与理论厚度的偏差时进行调节。可选地,还可在KWW处使用这样的测量方法,该测量方法测量的不是厚度,而是冷成型、更确切地说是平整度的参数,并发送该参数作为调节信号。在厚度压下装置8中进行冷成型时,以板厚减少小于30%、优选减少0.5%至10%执行冷成型。在通过冷轧或平整进行冷成型时,给带材压印表面结构,为此工作辊构造成具有平均粗糙度值Ra小于10μm、优选为0.2μm至3μm的表面结构。
图1还示出,在带材镀锌装置7之后可选地可连接有另一厚度压下装置11,其在优选的实施方案中同样作为冷轧机构KWW。此时,该另一厚度压下装置11的工作辊则可这样构造,即,工作辊具有小于10μm、优选地0.2μm至3μm的平均粗糙度值Ra,在冷成型时给带材压印上成品的表面结构。在镀锌前设有厚度压下装置8并且在镀锌后设有厚度压下装置11的工作方式的情况下,至少利用布置在另一厚度压下装置11的出口中的测量仪12将与理论带材厚度的偏差作为冷成型的调节量反馈给厚度压下装置11。
用于冷成型的厚度压下装置11优选为冷轧机(KWW)的形式,其还可在带材镀锌装置7之后取代受控的厚度调节以小于3%、优选为0.5%至2%的平整度执行平整工艺。除此之外,该KWW能以小于30%、优选为0.5%至10%的厚度减少、即以冷成型的恒定的理论值执行冷成型。
这样冷成型有表面结构的热轧带材2最后穿过带材后处理装置13,带材后处理装置在设备示例中可包括拉矫机STR和化学处理部分ChBT,例如钝化部,热轧带材2可从钝化部中作为成品到达例如配备有修边剪和带材贮料器(未示出)的离开部分AT。
在图2中示出的、在半连续运行中工作的热浸镀设备100与上文说明的、连续工作的热浸镀设备1的不同之处仅在于,将处于镀锌之前的工艺步骤转移出去,亦即在实施例中为用于带材预处理的生产线I和用于冷成型的生产线II,二者与用于带材镀锌的生产线III分开。
上文已阐述的功能和作用不受限制地适用于在图2中与图1一致地引入的附图标记。在图2中,用虚线包围地来强调热浸镀设备的核心部分,亦即在镀锌之前执行的冷成型。生产线的分离使得给每条生产线都配有进入部分ET和离开部分AT,其中,镀锌线III除了带材镀锌装置7之外还包括连接在该带材镀锌装置之前的带材清洁装置14和在另一厚度压下装置11之后集成的带材后处理装置13。
附图标记清单
1;100 热浸镀设备
2 钢带/热轧带材
3 带材预处理装置
4 破鳞机
5 酸洗池
6 冲洗池
7 带材镀锌装置
8 厚度压下装置
9 熔池
10 测量仪/厚度测量仪
11 厚度压下装置
12 测量仪/厚度测量仪
13 带材后处理装置
14 带材清洁装置
I 带材预处理生产线
II 带材冷成型生产线
III 带材镀锌生产线
ET 进入部分
AT 离开部分
ZB 破鳞机
KWW 冷轧机构或冷轧机(作为优选的冷成型的形式)
STR 拉矫机
ChBT 化学处理部分
Claims (19)
1.一种用于优选地在连续的带材设备中热浸镀热轧金属带材的方法,在其中,对所述热轧带材
-进行预处理,以去除鳞皮,
-镀锌,
-通过冷成型减少其厚度,以及
-进行后处理,
其特征在于,
使已清除鳞皮的热轧带材在发生于所述镀锌之前的工艺步骤中冷成型,其中,热轧带材的带材厚度减小少于30%,优选地减小0.5%至10%。
2.根据权利要求1所述的方法,其特征在于,在所述冷成型时,优选地通过冷轧过程,在冷轧机中在使用具有平均粗糙度值Ra小于10μm、优选为0.2μm至3μm的表面结构的工作辊的情况下给带材压印表面结构。
3.根据权利要求1或2所述的方法,其特征在于,在所述镀锌之前,测量冷成型的带材的厚度,并且反馈与理论厚度的偏差作为用于所述冷成型的厚度减少的调节量。
4.根据权利要求1或2所述的方法,其特征在于,在所述镀锌之前,控制所述冷成型的参数并且将该参数调节到理论值。
5.根据权利要求1至4中任一项所述的方法,其特征在于,在所述镀锌之前,利用冷成型,在冷轧机构中通过使用表面结构化的工作辊以小于3%、优选为0.5%至2%的平整度进行平整来施加要求的表面粗糙度。
6.根据权利要求1至5中任一项所述的方法,其特征在于,在紧接着所述镀锌的另一冷成型中,在冷轧机构中通过使用表面结构化的工作辊以小于3%、优选为0.5%至2%的平整度进行平整来将成品的带材表面结构施加到带材表面上。
7.根据权利要求1至5中任一项所述的方法,其特征在于,在紧接着所述镀锌的另一冷成型中,通过冷轧使所述带材厚度减少小于30%,优选减少4%至10%,其中,至少在该另一冷成型之后测量所述带材厚度,并且将与理论带材厚度的偏差作为调节量输送给冷成型。
8.根据权利要求6或7所述的方法,其特征在于,使用具有平均粗糙度值小于10μm、优选为0.2μm至3μm的工作辊用于在所述镀锌之后在所述冷轧机构中的冷成型,所述工作辊在所述冷成型时给带材施加成品的表面结构。
9.根据权利要求1至8中任一项所述的方法,其特征在于,设有半连续的工艺流程,在其中,在与镀锌线分开的、转移出去的处理线中执行发生于所述镀锌之前的各个工艺步骤,如带材预处理和/或冷成型,其中,在镀锌线中,除了镀上锌层之外还进行带材的后处理。
10.一种用于优选地在连续的生产线中制造热浸镀热轧钢带(2)的设备(1;100),该设备包括包含去除鳞皮的带材预处理装置(3)、带材镀锌装置(7)、至少一个厚度压下装置(8;11)和带材后处理装置(13),其中,厚度压下装置通过冷成型、尤其是冷轧带材实现,该设备尤其用于执行根据权利要求1至9所述的方法,
其特征在于,
首先紧接着用于为热轧带材清除鳞皮的带材预处理装置(3)的是厚度压下装置(8),在其中,带材厚度减少小于30%,优选减少0.5%至10%,并且然后在该厚度压下装置之后是所述带材镀锌装置(7),在其中,所述热轧带材穿过熔池(9)。
11.根据权利要求10所述的设备,其特征在于,所述厚度压下装置(8)是冷轧机(KWW),至少在所述冷轧机(KWW)的出口中给所述冷轧机分配测量仪(10),以反馈测量信号用于所述冷轧机(KWW)的厚度调节。
12.根据权利要求10所述的设备,其特征在于,所述厚度压下装置(8)是冷轧机(KWW),该冷轧机构造成将厚度减少量调节为恒定的。
13.根据权利要求10所述的设备,其特征在于,所述厚度压下装置(8)是冷轧机(KWW),其在厚度减少时以小于3%、优选为0.5%至2%的平整度给带材压印表面结构。
14.根据权利要求10至13中任一项所述的设备,其特征在于,紧接着所述带材镀锌装置(7)的是为冷轧机(KWW)的另一厚度压下装置(11),在其中,带材厚度减少小于30%,优选减少0.5%至10%。
15.根据权利要求14所述的设备,其特征在于,在该另一冷轧机(KWW)中,在出口中为了将厚度调节信号反馈给所述冷轧机(KWW)而布置有至少一个测量仪(12),以反馈测量信号用于所述冷轧机(KWW)的厚度调节。
16.根据权利要求14或15所述的设备,其特征在于,该另一冷轧机(KWW)(11)构造成将厚度减少量调节为恒定的。
17.根据权利要求14至16中任一项所述的设备,其特征在于,该另一冷轧机(KWW)(11)在厚度减少时以小于3%、优选为0.5%至2%的平整度给带材压印表面结构。
18.根据权利要求10至17中任一项或多项所述的设备,其特征在于,在所述厚度压下装置(8;11)中,在冷成型时,为了压印成品的带材表面结构而使用工作辊,所述工作辊具有平均粗糙度值Ra小于10μm、优选为0.2μm至3μm的表面结构。
19.根据权利要求10至18中任一项或多项所述的设备,其特征在于,对于半连续的工艺流程,设有与镀锌线(III)分开的、用于带材预处理(I)和/或冷成型(II)的、单独的生产线(I、II),从该生产线中将预处理并且冷成型的带材输送给具有集成的带材后处理装置(13)的所述镀锌线(III)。
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CN108480417A (zh) * | 2018-02-01 | 2018-09-04 | 日照宝华新材料有限公司 | 基于薄板坯连铸连轧热基原料及酸镀连续产线生产600g锌层无锌花热镀锌板的方法 |
CN108950382A (zh) * | 2018-06-25 | 2018-12-07 | 日照钢铁控股集团有限公司 | 一种基于无头带钢生产线和酸镀连续产线生产热基无花镀锌板的方法 |
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CN108220855B (zh) * | 2018-02-08 | 2020-04-24 | 鞍山发蓝股份公司 | 一种高强度包装用镀锌钢带的制备方法 |
CN109280872A (zh) * | 2018-11-06 | 2019-01-29 | 江苏国电新能源装备有限公司 | 一种循环镀锌生产线 |
DE102021129934A1 (de) * | 2021-11-17 | 2023-05-17 | Thyssenkrupp Steel Europe Ag | Verfahren zum Herstellen eines schmelztauchbeschichteten Stahlblechs und schmelztauchbeschichtetes Stahlblech |
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CN1860249A (zh) * | 2003-09-30 | 2006-11-08 | 新日本制铁株式会社 | 焊接性和延展性优良的高屈服比高强度薄钢板及高屈服比高强度热浸镀锌薄钢板、以及高屈服比高强度合金化热浸镀锌薄钢板及其制造方法 |
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CN108480417A (zh) * | 2018-02-01 | 2018-09-04 | 日照宝华新材料有限公司 | 基于薄板坯连铸连轧热基原料及酸镀连续产线生产600g锌层无锌花热镀锌板的方法 |
CN108480417B (zh) * | 2018-02-01 | 2021-04-13 | 日照宝华新材料有限公司 | 基于薄板坯连铸连轧热基原料及酸镀连续产线生产600g锌层无锌花热镀锌板的方法 |
CN108950382A (zh) * | 2018-06-25 | 2018-12-07 | 日照钢铁控股集团有限公司 | 一种基于无头带钢生产线和酸镀连续产线生产热基无花镀锌板的方法 |
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EP3097218B1 (de) | 2019-09-25 |
EP3097218A1 (de) | 2016-11-30 |
DE102015200764A1 (de) | 2015-07-23 |
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