CN111318566B - 铁铬铝合金连铸板坯热轧钢卷的生产方法 - Google Patents
铁铬铝合金连铸板坯热轧钢卷的生产方法 Download PDFInfo
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- -1 iron-chromium-aluminum Chemical compound 0.000 title claims abstract description 89
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 88
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 87
- 239000010959 steel Substances 0.000 title claims abstract description 87
- 238000009749 continuous casting Methods 0.000 title claims abstract description 77
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000005096 rolling process Methods 0.000 claims abstract description 20
- 238000005098 hot rolling Methods 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 claims abstract description 14
- 238000005507 spraying Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 230000007704 transition Effects 0.000 description 6
- 239000000956 alloy Substances 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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Abstract
本发明公开了一种铁铬铝合金连铸板坯热轧钢卷的生产方法,包括下述步骤:将铁铬铝合金连铸板坯装入加热炉,其中所述铁铬铝合金连铸板坯装炉前的表面温度控制为大于等于50℃;将加热炉在0.5小时~6小时内加热到1100℃~1200℃,然后保温30分钟~250分钟;将铁铬铝合金连铸板坯从加热炉取出进行热轧,热轧钢卷的过程温度及终轧温度控制在600℃~1200℃,热轧后钢带的厚度控制为1.2mm~8.0mm;热轧完毕后,喷水冷却钢带,在15秒~30秒内将钢带表面温度降低到200℃~450℃,然后进行卷取成卷。本发明的生产方法能够使钢卷在后续工序顺利打开,不会发生断带现象。
Description
技术领域
本发明总体上涉及电热合金钢卷热加工技术领域。更具体地涉及一种铁铬铝合金连铸板坯热轧钢卷的生产方法。
背景技术
铁铬铝合金是铁素体组织的电热合金材料,主要牌号有:1Cr13Al4、0Cr21Al5、0Cr21Al6、0Cr25Al5和0Cr27Al7Mo2等钢种(GB/T 1234、ASTM B 603中或其它标准规定的电热合金铁铬铝牌号),广泛地应用于电热、环保等领域。目前主要采用电渣重熔后锻造板坯、锻造板坯冷态装入加热炉加热后热轧钢卷,来生产铁铬铝合金带材。现有的铁铬铝合金连铸板坯热轧钢卷的生产方法效率低下、产品规格有限。
尤其是,采用现有的铁铬铝合金连铸板坯热轧钢卷的生产方法,在用铁铬铝合金连铸板坯生产宽度200mm~2050mm、厚度1.2mm~8.0mm的热轧钢卷时,连铸板坯加热温度及钢卷卷取温度控制不合适时,容易造成铁铬铝合金热卷开卷断带,这主要是由于钢卷脆韧转变温度(通过检测铁铬铝合金连铸板坯热轧钢卷的横向“U”型0℃~90℃冲击值即可得出)高于60℃。然而,目前为止,尚无专门针对铁铬铝合金连铸板坯热轧生产宽度200mm~2050mm、厚度1.2mm~8.0mm的热轧钢卷的技术。
发明内容
为了解决现有技术中存在的上述技术问题,本发明提供一种铁铬铝合金连铸板坯热轧钢卷的生产方法,其可以生产宽度200mm~2050mm、厚度2.0mm~8.0mm的热轧钢卷,同时将钢卷脆韧转变温度降低到小于60℃而消除了铁铬铝合金热卷开卷断带的问题,并拓宽了铁铬铝合金带材的应用范围。
本发明的铁铬铝合金连铸板坯热轧钢卷的生产方法包括下述步骤:
步骤1:将铁铬铝合金连铸板坯装入加热炉,其中所述铁铬铝合金连铸板坯装炉前的表面温度控制为大于等于50℃;
步骤2:将加热炉在0.5小时~6小时内加热到1100℃~1200℃,然后保温30分钟~250分钟;
步骤3:将铁铬铝合金连铸板坯从加热炉取出进行热轧,热轧钢卷的过程温度及终轧温度控制在600℃~1200℃,热轧后钢带的厚度控制为1.2mm~8.0mm;
步骤4:热轧完毕后,喷水冷却钢带,在15秒~30秒内将钢带表面温度降低到200℃~450℃,然后进行卷取成卷。
优选地,在上述步骤3中,采用热连轧机或炉卷轧机对铁铬铝合金连铸板坯进行热轧。
优选地,在上述铁铬铝合金连铸板坯热轧钢卷的生产方法中,以牌号为1Cr13Al4、0Cr21Al5、0Cr21Al6、0Cr25Al5和0Cr27Al7Mo2等的铁铬铝合金连铸板坯为原料,该铁铬铝合金连铸板坯的规格为:厚度120~250mm,宽度200~2050mm。
作为一种具体实施方式,在上述铁铬铝合金连铸板坯热轧钢卷的生产方法中,以牌号为0Cr21Al6的铁铬铝合金连铸板坯为原料,其化学成分按质量百分比为:C:0.008%、Si:0.21%、Mn:0.10%、Al:5.5%、Cr:19.8%、La:0.07%、Ti:0.11%、Nb:0.09%、P:0.021%、S:0.001%,其余为Fe及其它不可避免的杂质,所述铁铬铝合金连铸板坯的规格为:厚度180mm,宽度1080mm,其中:在所述步骤1中,铁铬铝合金连铸板坯装炉前的表面温度控制为168℃~320℃;在所述步骤2中,将加热炉在3小时内加热到1120℃~1180℃,然后保温50分钟;在所述步骤3中,采用热连轧机对铁铬铝合金连铸板坯进行热轧,热轧钢卷的过程温度及终轧温度控制在720℃~1185℃,热轧后钢带的厚度控制为2.8mm;在所述步骤4中,在15秒内将钢带表面温度降低到275℃~388℃,然后进行卷取成卷。
作为一种具体实施方式,在上述铁铬铝合金连铸板坯热轧钢卷的生产方法中,以牌号为1Cr13Al4的铁铬铝合金连铸板坯为原料,其化学成分按质量百分比为:C:0.008%、Si:0.35%、Mn:0.08%、Al:4.58%、Cr:13.86%、Ti:0.44%、P:0.012%、S:0.001%,其余为Fe及其它不可避免的杂质,所述铁铬铝合金连铸板坯的规格为:厚度200mm,宽度1800mm,其中:在所述步骤1中,铁铬铝合金连铸板坯装炉前的表面温度控制为212℃~485℃;在所述步骤2中,将加热炉在4小时10分钟内加热到1120℃~1200℃,然后保温80分钟;在所述步骤3中,采用炉卷轧机对铁铬铝合金连铸板坯进行热轧,热轧钢卷的过程温度及终轧温度控制在680℃~1190℃,热轧后钢带的厚度控制为3.3mm;在所述步骤4中,在30秒内将钢带表面温度降低到292℃~390℃,然后进行卷取成卷。
利用本发明的铁铬铝合金连铸板坯热轧钢卷的生产方法,通过控制铁铬铝合金连铸板坯的装炉温度、加热炉的加热速度和温度及保温时间、热轧钢卷的过程温度及终轧温度等,可以将钢卷脆韧转变温度降低到小于60℃,从而消除了铁铬铝合金热卷开卷断带的问题。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚,下面将结合本发明具体实施例对本发明技术方案进行清楚、完整地描述。显然,所描述的实施例仅是本发明的一部分实施例,而不是全部的实施例。基于本发明的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
本发明的铁铬铝合金连铸板坯热轧钢卷的生产方法以牌号为1Cr13Al4、0Cr21Al5、0Cr21Al6、0Cr25Al5和0Cr27Al7Mo2等的铁铬铝合金连铸板坯为原料,该铁铬铝合金连铸板坯的规格为:厚度120~250mm,宽度200~2050mm,并且总体上本发明的铁铬铝合金连铸板坯热轧钢卷的生产方法包括下述步骤:
步骤1:将铁铬铝合金连铸板坯装入加热炉,其中所述铁铬铝合金连铸板坯装炉前的表面温度控制为大于等于50℃;
步骤2:将加热炉在0.5小时~6小时内加热到1100℃~1200℃,然后保温30分钟~250分钟;
步骤3:将铁铬铝合金连铸板坯从加热炉取出进行热轧,热轧钢卷的过程温度及终轧温度控制在600℃~1200℃,热轧后钢带的厚度控制为1.2mm~8.0mm;
步骤4:热轧完毕后,喷水冷却钢带,在15秒~30秒内将钢带表面温度降低到200℃~450℃,然后进行卷取成卷。
优选地,在上述步骤3中,采用热连轧机或炉卷轧机对铁铬铝合金连铸板坯进行热轧。
利用本发明的铁铬铝合金连铸板坯热轧钢卷的生产方法生产的铁铬铝合金连铸板坯热轧钢卷,经检测其垂直于轧制方向的横向“U”型0℃~90℃冲击值,钢卷脆韧转变温度小于60℃,能够使钢卷在后续工序顺利打开,不会发生断带现象。
以下结合具体实施例,详细说明本发明的铁铬铝合金连铸板坯热轧钢卷的生产方法。
实施例1
以牌号为0Cr21Al6的铁铬铝合金连铸板坯为原料,其化学成分按质量百分比为:C:0.008%、Si:0.21%、Mn:0.10%、Al:5.5%、Cr:19.8%、La:0.07%、Ti:0.11%、Nb:0.09%、P:0.021%、S:0.001%,其余为Fe及其它不可避免的杂质,该铁铬铝合金连铸板坯的规格为:厚度180mm,宽度1080mm。
实施例1的铁铬铝合金连铸板坯热轧钢卷的生产方法包括如下步骤:
(1)将铁铬铝合金连铸板坯装入加热炉,其中铁铬铝合金连铸板坯装炉前的表面温度控制为168℃~320℃;
(2)将加热炉在3小时内加热到1120℃~1180℃,然后保温50分钟;
(3)将铁铬铝合金连铸板坯从加热炉取出,采用热连轧机进行热轧,热轧钢卷的过程温度及终轧温度控制在720℃~1185℃,热轧后钢带的厚度控制为2.8mm;
(4)热轧完毕后,喷水冷却钢带,在15秒内将钢带表面温度降低到275℃~388℃,然后进行卷取成卷。
检测利用实施例1的铁铬铝合金连铸板坯热轧钢卷的生产方法生产的铁铬铝合金连铸板坯热轧钢卷的垂直于轧制方向的横向“U”型0℃~90℃冲击值,钢卷脆韧转变温度为45℃,能够使钢卷在后续工序顺利打开,不会发生断带现象。
实施例2
以牌号为1Cr13Al4的铁铬铝合金连铸板坯为原料,其化学成分按质量百分比为:C:0.008%、Si:0.35%、Mn:0.08%、Al:4.58%、Cr:13.86%、Ti:0.44%、P:0.012%、S:0.001%,其余为Fe及其它不可避免的杂质,该铁铬铝合金连铸板坯的规格为:厚度200mm,宽度1800mm。
实施例2的铁铬铝合金连铸板坯热轧钢卷的生产方法包括如下步骤:
(1)将铁铬铝合金连铸板坯装入加热炉,其中铁铬铝合金连铸板坯装炉前的表面温度控制为212℃~485℃;
(2)将加热炉在4小时10分钟内加热到1120℃~1200℃,然后保温80分钟;
(3)将铁铬铝合金连铸板坯从加热炉取出,采用炉卷轧机进行热轧,热轧钢卷的过程温度及终轧温度控制在680℃~1190℃,热轧后钢带的厚度控制为3.3mm;
(4)热轧完毕后,喷水冷却钢带,在30秒内将钢带表面温度降低到292℃~390℃,然后进行卷取成卷。
检测利用实施例2的铁铬铝合金连铸板坯热轧钢卷的生产方法生产的铁铬铝合金连铸板坯热轧钢卷的垂直于轧制方向的横向“U”型0℃~90℃冲击值,钢卷脆韧转变温度为35℃,能够使钢卷在后续工序顺利打开,不会发生断带现象。
需要说明的是,以上实施例仅用于说明本发明的技术方案,而非对其限制;尽管参照前述实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明的范围。
Claims (4)
1.一种铁铬铝合金连铸板坯热轧钢卷的生产方法,其特征在于,所述生产方法包括下述步骤:
步骤1:将铁铬铝合金连铸板坯装入加热炉,其中所述铁铬铝合金连铸板坯装炉前的表面温度控制为大于等于50℃;
步骤2:将加热炉在0.5小时~6小时内加热到1100℃~1200℃,然后保温30分钟~250分钟;
步骤3:将铁铬铝合金连铸板坯从加热炉取出进行热轧,热轧钢卷的过程温度及终轧温度控制在600℃~1200℃,热轧后钢带的厚度控制为1.2mm~8.0mm;
步骤4:热轧完毕后,喷水冷却钢带,在15秒~30秒内将钢带表面温度降低到200℃~450℃,然后进行卷取成卷;
其中,以牌号为1Cr13Al4、0Cr21Al5、0Cr21Al6、0Cr25Al5和0Cr27Al7Mo2的铁铬铝合金连铸板坯为原料,所述铁铬铝合金连铸板坯的规格为厚度120~250mm、宽度200~2050mm。
2.根据权利要求1所述的铁铬铝合金连铸板坯热轧钢卷的生产方法,其特征在于,在所述步骤3中,采用热连轧机或炉卷轧机对铁铬铝合金连铸板坯进行热轧。
3.根据权利要求1所述的铁铬铝合金连铸板坯热轧钢卷的生产方法,其特征在于,以牌号为0Cr21Al6的铁铬铝合金连铸板坯为原料,其化学成分按质量百分比为:C:0.008%、Si:0.21%、Mn:0.10%、Al:5.5%、Cr:19.8%、La:0.07%、Ti:0.11%、Nb:0.09%、P:0.021%、S:0.001%,其余为Fe及其它不可避免的杂质,所述铁铬铝合金连铸板坯的规格为:厚度180mm,宽度1080mm,其中:
在所述步骤1中,铁铬铝合金连铸板坯装炉前的表面温度控制为168℃~320℃;
在所述步骤2中,将加热炉在3小时内加热到1120℃~1180℃,然后保温50分钟;
在所述步骤3中,采用热连轧机对铁铬铝合金连铸板坯进行热轧,热轧钢卷的过程温度及终轧温度控制在720℃~1185℃,热轧后钢带的厚度控制为2.8mm;
在所述步骤4中,在15秒内将钢带表面温度降低到275℃~388℃,然后进行卷取成卷。
4.根据权利要求1所述的铁铬铝合金连铸板坯热轧钢卷的生产方法,其特征在于,以牌号为1Cr13Al4的铁铬铝合金连铸板坯为原料,其化学成分按质量百分比为:C:0.008%、Si:0.35%、Mn:0.08%、Al:4.58%、Cr:13.86%、Ti:0.44%、P:0.012%、S:0.001%,其余为Fe及其它不可避免的杂质,所述铁铬铝合金连铸板坯的规格为:厚度200mm,宽度1800mm,其中:
在所述步骤1中,铁铬铝合金连铸板坯装炉前的表面温度控制为212℃~485℃;
在所述步骤2中,将加热炉在4小时10分钟内加热到1120℃~1200℃,然后保温80分钟;
在所述步骤3中,采用炉卷轧机对铁铬铝合金连铸板坯进行热轧,热轧钢卷的过程温度及终轧温度控制在680℃~1190℃,热轧后钢带的厚度控制为3.3mm;
在所述步骤4中,在30秒内将钢带表面温度降低到292℃~390℃,然后进行卷取成卷。
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