CN116018219A - 用于无头铸造和紧接着平轧钢带的设备和方法 - Google Patents

用于无头铸造和紧接着平轧钢带的设备和方法 Download PDF

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CN116018219A
CN116018219A CN202180055160.4A CN202180055160A CN116018219A CN 116018219 A CN116018219 A CN 116018219A CN 202180055160 A CN202180055160 A CN 202180055160A CN 116018219 A CN116018219 A CN 116018219A
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steel strip
hot
rolling
austenitic
casting
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H·霍夫
I·舒斯特
M·彼得斯
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SMS Group GmbH
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Abstract

本申请涉及用于无头铸造和紧接着平轧钢带(2)的设备(1)以及方法，该钢带(2)具有奥氏体和/或铁素体组织结构以及小于1.0mm的厚度，设备包括：铸造装置(3)，通过该铸造装置可连续铸造在1.50至4.0mm的范围中的厚度的原始钢带(4)；以及至少一个与铸造装置(3)耦联的热轧机架(6)，可通过该热轧机架直接在铸造过程之后还在奥氏体和/或铁素体组织区中将原始钢带(4)热粗轧成钢带(2)；其中，设备包括至少一个直接布置在与铸造装置(3)耦联的热轧机架(6)之后的轧制模块(7)，该轧制模块(7)依次具有冷却装置(8)、加热装置(9)以及热轧机架(10)，通过该轧制模块可将处在奥氏体和/或铁素体组织区中的粗轧的钢带(2)热精轧成钢带(2)。

Description

用于无头铸造和紧接着平轧钢带的设备和方法
技术领域
本发明涉及用于无头铸造和紧接着平轧钢带的设备和方法，该钢带具有奥氏体和/或铁素体组织结构以及小于1.0mm的厚度，优选具有小于0.80mm的厚度，特别优选地具有在0.40至0.60mm范围中的厚度。
背景技术
这种钢带通常通过在单独的冷轧机中冷轧热轧带材来生产，从而需要至少两个或三个加工步骤来生产具有奥氏体和/或铁素体组织结构的这种薄钢带。
虽然从德国出版物DE 11 2013 000 841 T5已知用于制造薄钢带的设备，其中可铸造厚度为1-5毫米的铸造带材，并且可将铸造带材直接在热轧机组中热轧形成薄钢带，然而这种设备不能实现有针对性地制造具有奥氏体和/或铁素体组织结构的钢带。
发明内容
在此背景下，本发明的目的是提供与现有技术相比有所改进的设备和与现有技术相比有所改进的方法，尤其是提供能够制造具有奥氏体和/或铁素体组织结构且小于1.0毫米的厚度的钢带的设备和方法。
根据本发明，该目的通过具有专利权利要求1的特征的设备和具有专利权利要求8的特征的方法来实现。
根据本发明的设备设置成和/或适用于无头铸造和紧接着平轧具有奥氏体和/或铁素体组织结构且厚度小于1.0mm的钢带，包括：铸造装置，利用该铸造装置可连续铸造厚度在1.50mm至4.0mm范围中的原始钢带；以及至少一个与连铸装置耦联的热轧机架，可通过该热轧机架直接在铸造过程之后还在奥氏体和/或铁素体组织区中将原始钢带热粗轧成钢带。
根据本发明，设备包括至少一个直接布置在与铸造装置耦联的热轧机架之后的轧制模块，该轧制模块依次具有冷却装置、加热装置以及热轧机架，通过该轧制模块可将在奥氏体和/或铁素体组织区中的粗轧的钢带热精轧成钢带。
同样地，本发明提供了用于制造具有奥氏体和/或铁素体组织结构且厚度小于1.0mm的钢带的方法，其中，首先在铸造装置中连续铸造厚度在1.50mm至4.0mm的范围中的原始钢带，然后将原始钢带直接在奥氏体和/或铁素体组织区中优选在至少700℃的温度以上借助于至少一个与铸造装置耦联的热轧机架热粗轧成钢带。
根据本发明，将此时在奥氏体和/或铁素体组织区中热粗轧的钢带通过至少一个轧制模块奥氏体和/或铁素体热精轧成钢带，该轧制模块依次具有冷却装置、加热装置以及热轧机架，并且直接布置在与铸造装置耦联的热轧机架之后。
一方面，该设备和方法能够在热轧带材生产中、尤其在生产超薄热轧带材中实现更高的经济性，因为由于工艺步骤的节省而可显著降低交货时间、降低投资成本并且实现显著的节能。
术语“奥氏体和/或铁素体组织结构”中的“和/或”组合在本发明的意义中被理解为意指待制造的钢带在工艺结束时具有奥氏体或铁素体组织结构，并且在制造期间可奥氏体轧制以及铁素体轧制。换句话说，在工艺结束时，待制造的钢带基本上不具有奥氏体和铁素体组织的混合结构。
术语“超薄热轧带材”在本发明的意义中被理解成这样的钢带，其厚度小于1.0mm，优选厚度小于0.80mm，特别优选地，厚度在0.40mm到0.60毫米的范围内。非常特别优选地，具有奥氏体和/或铁素体组织结构的钢带具有0.4mm的厚度。
此外，可通过至少一个轧制模块有针对性性地调节钢带中的奥氏体和/或铁素体组织结构。例如，为了在钢带中产生铁素体组织结构，将奥氏体或铁素体热粗轧的钢带通过冷却装置进行冷却，然后使其在轧制模块的轧机机架中优选在700至780℃的温度范围内进行铁素体精轧。另一方面，如果要在钢带中调节奥氏体组织结构，则将奥氏体或铁素体热粗轧的钢带通过加热装置加热，然后使其在轧制模块的轧机机架中优选高于850℃的温度进行奥氏体精轧。
本发明的其他有利的设计方案在从属权利要求中给出。在从属权利要求中单独列出的特征可以技术上有意义的方式相互组合，并且可限定本发明的进一步的设计方案。此外，在说明书中更详细地说明和阐述了权利要求中给出的特征，其中，提出了本发明的其他优选的设计方案。
在有利的实施方案变体中，设备可包括至少两个、更优选地包括至少三个相应相继布置的轧制模块，其中，轧制模块中的每个相应依次具有冷却装置、加热装置以及热轧机架，以便相应地实现在奥氏体和/或铁素体组织区中的热轧。因此，在相应的奥氏体和/或铁素体组织区中的总转变度可通过所使用的转变次数来改变，由此可有利地影响钢带的质量参数。
在另一有利的实施方案变体中，设备还可包括布置在铸造装置和与铸造装置耦联的热轧机架之间的加热装置，以便在在热轧机架中奥氏体热粗轧原始钢带之前，有针对性地实现在此期间加热来自铸造装置的原始钢带。
优选地，设备在至少一个轧制模块之后、特别优选地在最后的轧制模块之后包括至少一个冷却区段，通过冷却区段将钢带冷却到卷绕温度。就此而言，有利地规定，设备包括至少一个卷绕装置，更优选地包括至少两个卷绕装置，通过卷绕装置将制成的钢带卷成卷。通常，设备还具有布置在卷绕装置之前的分离装置，以分离钢带。
在另一实施方案变体中，设备还可包括用于钢带的酸洗的酸洗装置和/或用于钢带的退火的热处理装置，其此时布置在优选最后的轧制模块和冷却区段之间。
在另一方面，本发明还涉及根据本发明的设备用于有针对性地制造钢带的用途，该钢带具有奥氏体和/或铁素体组织结构和小于1.0mm的厚度，优选具有小于0.80mm的厚度，特别优选地具有在0.40mm至0.60mm的范围中的厚度。
附图说明
下面通过附图更详细地阐述本发明和技术环境。应指出的是，本发明不应受限于所示的实施例。尤其是，除非另有明确说明，还可提取附图中阐述的事实的部分方面并将其与来自本说明书和/或附图的其他组成部分和发现相结合。尤其应指出的是，附图和尤其所示的比例仅仅是示意性的。相同的附图标记表示相同的对象，从而必要时可使用来自其他附图的阐述作为补充。其中：
图1示出了根据本发明的设备的第一实施方案变体，以及
图2示出了根据本发明的设备的第二实施方案变体。
具体实施方式
在图1中示出了设备1的实施方案变体，借助于该设备可通过无头铸造和紧接着平轧制造具有奥氏体和/或铁素体组织结构且小于1.0mm的厚度的钢带2。
在示出的该实施方案变体中，设备1包括铸造装置3，铸造装置被连续供应钢水。首先通过铸造装置3连续铸造具有在1.50mm至4.0mm的范围中的厚度的原始钢带4。沿带材行进方向在铸造装置3之后布置有第一加热装置5，如果温度低于700℃和/或如果应在奥氏体组织区中执行第一转变步骤，可通过第一加热装置在第一轧制道次之前加热原始钢带4。第一加热装置5例如可以感应加热装置的形式来实施。此外，设备1包括第一热轧机架6，第一热轧机架与铸造装置3直接耦联。在本发明的意义中，将术语“直接耦联”理解成第一热轧机架6沿带材行进方向直接布置在铸造装置3之后，使得由铸造装置3生产的原始钢带4可直接并且因此在奥氏体和/或铁素体组织区中进行热粗轧。
设备1还包括沿带材行进方向在第一热轧机架6之后的第一轧制模块7，第一轧制模块7依次具有第一冷却装置8、第二加热装置9以及第二热轧机架10，通过该第一轧制模块将在奥氏体和/或铁素体组织区中的奥氏体和/或铁素体粗轧的钢带2热精轧成钢带2。第二加热装置9例如还可以感应加热装置的形式来实施。第一冷却装置10例如可以机架间冷却部的形式来构造。
沿带材行进方向在第一轧制模块7之后，设备1首先包括冷却区段11，该冷却区段优选以喷洒冷却部的形式来实施，并且借助于该冷却区段，由于非常小的厚度，可周密地冷却被轧制到期望的最终带材厚度、例如0.4mm的最终带材厚度的钢带2。接着，钢带2经过例如可包括飞剪的分离装置12，并且通过第一卷绕装置13和/或第二卷绕装置14卷成卷。
在图2中示出了根据本发明的设备1的第二实施方案变体，不同于第一实施方案变体，该第二实施方案变体包括第二轧制模块15，第二轧制模块同样具有第二冷却装置16、第三加热装置17以及第三热轧机架18，通过第二轧制模块能够实现在奥氏体和/或铁素体组织区中的轧制。
示例
示例1:
为了制造具有纯奥氏体组织结构的钢带2，首先借助于在图1中示出的设备1铸造具有2.0mm的厚度和1100mm的宽度的原始钢带4。原始钢带4在离开铸造装置3时具有1250℃的温度，然后通过感应加热部5从1157℃的入口温度加热到1246℃。接着，将原始钢带4以2.52m/s的轧制速度在第一热轧机架6中以55％的压下量进行奥氏体热粗轧，其中，入口温度为1130℃，出口温度为971℃。随后通过以下方式经由第一轧制模块7精轧这时获得的0.9mm厚的奥氏体粗轧的钢带2，即，将钢带首先通过感应加热部9从938℃加热到1051℃的温度，然后以3.78m/s的轧制速度在第二热轧机架10中以33％的压下量进行奥氏体热精轧。进入第二热轧机架10中的入口温度是992℃，出口温度是882℃。如此获得的具有0.6mm的最终带材厚度的钢带2随后被冷却并且卷成卷。
示例2:
为了制造具有纯铁素体组织结构的钢带2，首先借助于在图1中示出的设备1铸造具有2.0mm的厚度和1100mm的宽度的原始钢带4。原始钢带4在离开铸造装置3时具有1250℃的温度，由于足够高的温度而无需加热就被输送给热轧机架6，并且以2.22m/s的轧制速度在热轧机架6中以55％的压下量进行奥氏体热粗轧，其中，入口温度为1020℃，出口温度为882℃。随后通过以下方式将此时获得的0.9mm厚的奥氏体粗轧的钢带2经由第一轧制模块7进行铁素体精轧，即，钢带首先经由冷却装置8从794℃冷却到785℃的温度，然后以3.33m/s的轧制速度在第二热轧机架10中以33％的压下量进行热精轧。进入到第二热轧机架10中的入口温度为757℃，出口温度为705℃。随后，如此获得的具有0.6mm的最终带材厚度的钢带2被冷却并且卷成卷。
附图标记列表
1 设备
2 钢带
3 铸造装置
4 原始钢带
5第一加热装置/感应加热部
6第一热轧机架
7(第一)轧制模块
8第一冷却装置
9第二加热装置/感应加热部
10第二热轧机架
11冷却区段/喷洒冷却部
12 分离装置
13 第一卷绕装置
14 第二卷绕装置
15 第二轧制模块
16 第二冷却装置
17 第三加热装置
18 第三热轧机架。

Claims (9)

1.用于无头铸造和紧接着平轧钢带(2)的设备(1)，该钢带具有奥氏体和/或铁素体组织结构以及小于1.0mm的厚度，该设备包括：
铸造装置(3)，通过该铸造装置能够连续铸造具有在1.50至4.0mm的范围中的厚度的原始钢带(4)；以及
与所述铸造装置(3)耦联的至少一个热轧机架(6)，通过该热轧机架能够直接在铸造过程之后还在奥氏体和/或铁素体组织区中将原始钢带(4)热粗轧成钢带(2)，
其特征在于，
该设备包括直接布置在与所述铸造装置(3)耦联的热轧机架(6)之后的至少一个轧制模块(7)，该轧制模块依次具有冷却装置(8)、加热装置(9)以及热轧机架(10)，通过该轧制模块能将处在所述奥氏体和/或铁素体组织区中的粗轧的钢带(2)热精轧成钢带(2)。
2.根据权利要求1所述的设备(1)，其中，该设备包括至少两个、优选至少三个相应相继布置的轧制模块(7、15)，其中，所述轧制模块(7、15)中的每个轧制模块依次具有冷却装置(8、16)、加热装置(9、17)以及热轧机架(10、18)。
3.根据权利要求1或2所述的设备(1)，其中，在所述至少一个轧制模块(7)之后，优选在最后的轧制模块(15)之后，设置有至少一个冷却区段(11)。
4.根据上述权利要求中任一项所述的设备(1)，其中，该设备还包括布置在与所述铸造装置(3)耦联的热轧机架(6)之前的至少一个加热装置(5)。
5.根据上述权利要求中任一项所述的设备(1)，其中，该设备还包括布置在所述至少一个轧制模块(7)之后、优选布置在最后的轧制模块(15)之后的、用于金属带材(2)的酸洗的酸洗装置和/或用于金属带材(2)的退火的热处理装置。
6.根据上述权利要求中任一项所述的设备(1)，其中，该设备还包括至少一个、优选至少两个卷绕装置(13、14)，以用于将所述钢带(2)卷成卷。
7.根据权利要求6所述的设备(1)，其中，该设备还包括布置在所述至少一个卷绕装置(13、14)之前的分离装置(12)，以用于分离所述钢带(2)。
8.用于制造钢带(2)的方法，该钢带具有奥氏体和/或铁素体组织结构和小于1.0mm的厚度，其中，首先在铸造装置(3)中连续铸造具有在1.50至4.0mm的范围中的厚度的原始钢带(4)，然后将原始钢带直接在奥氏体和/或铁素体组织区中优选在至少700℃的温度以上借助于与所述铸造装置(3)耦联的至少一个热轧机架(6)热粗轧成钢带(2)，
其特征在于，
将热粗轧的钢带(2)通过至少一个轧制模块(7)奥氏体和/或铁素体热精轧成钢带(2)，该轧制模块(7)依次具有冷却装置(8)、加热装置(9)以及热轧机架(10)，并且直接布置在与所述铸造装置(3)耦联的热轧机架(6)之后。
9.根据上述权利要求1至7中任一项所述的设备(1)用于制造钢带(2)的用途，该钢带具有奥氏体和/或铁素体组织结构和小于1.0mm的厚度。
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