CN109570235A - 一种带钢生产工艺 - Google Patents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-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
- B21B1/22—Metal-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
- B21B1/24—Metal-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 in a continuous or semi-continuous process
- B21B1/26—Metal-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 in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-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
- B21B1/22—Metal-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
- B21B1/24—Metal-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 in a continuous or semi-continuous process
- B21B1/28—Metal-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 in a continuous or semi-continuous process by cold-rolling, e.g. Steckel cold mill
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-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
- B21B1/46—Metal-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
- B21B1/463—Metal-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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/1226—Accessories for subsequent treating or working cast stock in situ for straightening strands
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/18—Controlling or regulating processes or operations for pouring
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Abstract
本发明公开了一种带钢生产工艺,属于带钢生产技术领域。包括如下步骤:S1、铸坯凝固;S2、拉出铸坯;S3、加热铸坯;S4、得到热轧钢板卷;S5、冷却;S6、得到冷轧钢板卷。其有益效果在于,本发明提供的一种带钢生产工艺,整个轧制工艺简洁流畅,稳定高效,轧制速度快,钢板断裂现象低,降低钢板蛇行对钢板冷轧的影响,大大提高了冷轧生产线的加工速度和轧制质量。
Description
技术领域
本发明属于带钢生产技术领域,具体涉及一种带钢生产工艺。
背景技术
在生产冷轧带肋钢筋生产中,采用这种“一拖一”方式进行大变形量、高速轧制时,容易造成钢筋拉断、产品耳形等事故和缺陷,在实际中这种轧机组轧制速度最多只能达到180米/分钟,超过180米/分钟后,轧制时钢筋非常容易断裂,在目前高速冷轧发展的情况下,在生产冷轧带肋钢筋需要一种能够完成高速轧制的冷轧机组及工艺。在轧制工序中,有时因钢带向轧制机的宽度方向外侧移动而引起蛇行的产生。一般而言,在热轧设备中,将多个轧制机配置成串联状,在被轧制的钢带的前端通过最终级的轧制机后到该钢带的尾端进入第一级的轧制机的期间,所谓在正常轧制中,由于钢带在各轧制机间被约束,因此很少产生显著的蛇行。但是,在钢带的尾端穿过各轧制机时,基于该穿过的轧制机的约束力消失,因此,钢带的蛇行急剧明显化。由此,由于钢带的尾端与在下一轧制机的入侧设置的侧引导件的接触等,产生钢带的尾端折入而被轧制这样的所谓尾端挤压。
发明内容
本发明针对现有技术的状况,克服上述缺陷,提供一种带钢生产工艺。
本发明采用以下技术方案,所述一种带钢生产工艺,包括如下步骤:
S1、铸坯凝固:将冶炼后得到的钢水在保护渣存在下使用连铸机进行板坯连铸;
S2、拉出铸坯:将S1中连铸后的板坯通过拉矫机将铸坯拉出,为防止坯鼓肚和减少矫直时铸坯内部的变形应力,所述拉矫机至少需要20对拉矫辊,并设计成多点矫直或连续矫直;
S3、加热铸坯:将S2中经由拉矫机拉出的铸坯运送至加热炉进行加热,加到所需的温度后出炉,铸坯的出炉温度为1250至1300℃;铸坯进入粗轧机往复轧3-4道次,获得中间坯,中间坯进入精轧机连续轧7-8道次,获得成品;
S4、得到热轧钢板卷:将步骤S3获得的成品进入卷取机卷成卷,得到热轧钢板卷;
S5、冷却:将S4中获得的热轧钢板卷进行冷却,在再结晶温度以下进行轧制而成,在末端轧机上游至少串联设置两台前端轧机,所述前端轧机的轧制方向与末端轧机的轧制方向垂直,前端轧机的轧制方向相同,所述的末端轧机为主动轧机,所述的前端轧机为被动轧机,设置两台前端轧机;
S6、得到冷轧钢板卷:将S5中获得的钢板卷材的末端部加热到50℃~350℃的温度范围,使其进入卷取机卷成卷,得到冷轧钢板卷。
作为上述技术方案的进一步改进,步骤S1中铸坯凝固过程采用二冷装置,所述二冷装置内设有密集的导向辊,以控制铸坯的鼓肚问题,控制钢水中C的含量<0.08wt%,Mn含量为0.16至0.22wt%
作为上述技术方案的进一步改进,所述步骤S1中连铸机断面为1600mm×230mm,铸机结晶器锥度为1.1至1.4%/m,铸机拉速为1.0至1.4m/min。
作为上述技术方案的进一步改进,所述辊轧机机架的出口处的速度借助于激光测速仪进行测量。
作为上述技术方案的进一步改进,所述步骤S3中粗轧的开轧温度为1240-1285℃,粗轧末道次温度为1175-1195℃,精轧的开轧温度为1150-1175℃,精轧末道次温度为920-950℃。
作为上述技术方案的进一步改进,所述步骤S3中精轧机中设有油轧机,所述油轧机包括供给单元、轧制油喷射单元和排出装置,供给单元向所述精轧机的轧辊喷射的轧制油;轧制油喷射单元与所述供给单元连接,向所述轧辊喷射所述轧制油;排出装置设置在所述轧制油喷射单元,所述油轧机还包括控制部,所述控制部与所述排出装置连接,控制所述轧制油的排出。
作为上述技术方案的进一步改进,所述步骤S5中的冷轧工艺的轧制速度在900-2000米/分钟之间,所述的两台前端轧机同向轧制时第一台前端轧机减径量为目标减径量的0.4倍,第二台前端轧机完成目标减径余量。
本发明公开的一种带钢生产工艺,其有益效果在于,本发明提供的一种带钢生产工艺,整个轧制工艺简洁流畅,稳定高效,轧制速度快,钢板断裂现象低,降低钢板蛇行对钢板冷轧的影响,大大提高了冷轧生产线的加工速度和轧制质量。
具体实施方式
本发明公开了一种带钢生产工艺,下面结合优选实施例,对本发明的具体实施方式作进一步描述。
所述一种带钢生产工艺,包括如下步骤:
S1、铸坯凝固:将冶炼后得到的钢水在保护渣存在下使用连铸机进行板坯连铸;
S2、拉出铸坯:将S1中连铸后的板坯通过拉矫机将铸坯拉出,为防止坯鼓肚和减少矫直时铸坯内部的变形应力,所述拉矫机至少需要20对拉矫辊,并设计成多点矫直或连续矫直;
S3、加热铸坯:将S2中经由拉矫机拉出的铸坯运送至加热炉进行加热,加到所需的温度后出炉,铸坯的出炉温度为1250至1300℃;铸坯进入粗轧机往复轧3-4道次,获得中间坯,中间坯进入精轧机连续轧7-8道次,获得成品;
S4、得到热轧钢板卷:将步骤S3获得的成品进入卷取机卷成卷,得到热轧钢板卷;
S5、冷却:将S4中获得的热轧钢板卷进行冷却,在再结晶温度以下进行轧制而成,在末端轧机上游至少串联设置两台前端轧机,所述前端轧机的轧制方向与末端轧机的轧制方向垂直,前端轧机的轧制方向相同,所述的末端轧机为主动轧机,所述的前端轧机为被动轧机,设置两台前端轧机;
S6、得到冷轧钢板卷:将S5中获得的钢板卷材的末端部加热到50℃~350℃的温度范围,使其进入卷取机卷成卷,得到冷轧钢板卷。
优选地,步骤S1中铸坯凝固过程采用二冷装置,所述二冷装置内设有密集的导向辊,以控制铸坯的鼓肚问题,控制钢水中C的含量<0.08wt%,Mn含量为0.16至0.22wt%
优选地,所述步骤S1中连铸机断面为1600mm×230mm,铸机结晶器锥度为1.1至1.4%/m,铸机拉速为1.0至1.4m/min。
优选地,所述辊轧机机架的出口处的速度借助于激光测速仪进行测量。
优选地,所述步骤S3中粗轧的开轧温度为1240-1285℃,粗轧末道次温度为1175-1195℃,精轧的开轧温度为1150-1175℃,精轧末道次温度为920-950℃。
优选地,所述步骤S3中精轧机中设有油轧机,所述油轧机包括供给单元、轧制油喷射单元和排出装置,供给单元向所述精轧机的轧辊喷射的轧制油;轧制油喷射单元与所述供给单元连接,向所述轧辊喷射所述轧制油;排出装置设置在所述轧制油喷射单元,所述油轧机还包括控制部,所述控制部与所述排出装置连接,控制所述轧制油的排出。
优选地,所述步骤S5中的冷轧工艺的轧制速度在900-2000米/分钟之间,所述的两台前端轧机同向轧制时第一台前端轧机减径量为目标减径量的0.4倍,第二台前端轧机完成目标减径余量。
对于本领域的技术人员而言,依然可以对前述各实施例所记载的技术方案进行修改,或对其中部分技术特征进行等同替换,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围。
Claims (7)
1.一种带钢生产工艺,其特征在于:包括如下步骤:
S1、铸坯凝固:将冶炼后得到的钢水在保护渣存在下使用连铸机进行板坯连铸;
S2、拉出铸坯:将S1中连铸后的板坯通过拉矫机将铸坯拉出,为防止坯鼓肚和减少矫直时铸坯内部的变形应力,所述拉矫机至少需要20对拉矫辊,并设计成多点矫直或连续矫直;
S3、加热铸坯:将S2中经由拉矫机拉出的铸坯运送至加热炉进行加热,加到所需的温度后出炉,铸坯的出炉温度为1250至1300℃;铸坯进入粗轧机往复轧3-4道次,获得中间坯,中间坯进入精轧机连续轧7-8道次,获得成品;
S4、得到热轧钢板卷:将步骤S3获得的成品进入卷取机卷成卷,得到热轧钢板卷;
S5、冷却:将S4中获得的热轧钢板卷进行冷却,在再结晶温度以下进行轧制而成,在末端轧机上游至少串联设置两台前端轧机,所述前端轧机的轧制方向与末端轧机的轧制方向垂直,前端轧机的轧制方向相同,所述的末端轧机为主动轧机,所述的前端轧机为被动轧机,设置两台前端轧机;
S6、得到冷轧钢板卷:将S5中获得的钢板卷材的末端部加热到50℃~350℃的温度范围,使其进入卷取机卷成卷,得到冷轧钢板卷。
2.根据权利要求1所述的一种带钢生产工艺,其特征在于:步骤S1中铸坯凝固过程采用二冷装置,所述二冷装置内设有密集的导向辊,以控制铸坯的鼓肚问题,控制钢水中C的含量<0.08wt%,Mn含量为0.16至0.22wt%。
3.根据权利要求2所述的一种带钢生产工艺,其特征在于:所述步骤S1中连铸机断面为1600mm×230mm,铸机结晶器锥度为1.1至1.4%/m,铸机拉速为1.0至1.4m/min。
4.根据权利要求1所述的一种带钢生产工艺,其特征在于:所述辊轧机机架的出口处的速度借助于激光测速仪进行测量。
5.根据权利要求1所述的一种带钢生产工艺,其特征在于:所述步骤S3中粗轧的开轧温度为1240-1285℃,粗轧末道次温度为1175-1195℃,精轧的开轧温度为1150-1175℃,精轧末道次温度为920-950℃。
6.根据权利要求1所述的一种带钢生产工艺,其特征在于:所述步骤S3中精轧机中设有油轧机,所述油轧机包括供给单元、轧制油喷射单元和排出装置,供给单元向所述精轧机的轧辊喷射的轧制油;轧制油喷射单元与所述供给单元连接,向所述轧辊喷射所述轧制油;排出装置设置在所述轧制油喷射单元,所述油轧机还包括控制部,所述控制部与所述排出装置连接,控制所述轧制油的排出。
7.权利要求1所述的一种带钢生产工艺,其特征在于:所述步骤S5中的冷轧工艺的轧制速度在900-2000米/分钟之间,所述的两台前端轧机同向轧制时第一台前端轧机减径量为目标减径量的0.4倍,第二台前端轧机完成目标减径余量。
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CN112474834B (zh) * | 2020-10-30 | 2022-06-07 | 临沂汇力机械有限公司 | 一种冷轧带钢生产工艺 |
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