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1、 鞍山科技大学本科生毕业设计 第68页毕业设计年产120万吨冷轧带钢厂工艺设计摘要本设计是参考鞍山钢冷轧厂1780机组而进行的冷轧带钢工艺设计，典型产品为Q215，0.51000mm的冷轧带钢，本设计的目的是设计一个年产120万吨的冷轧带钢车间。主体设备有连续酸洗机组、五机架全连续冷轧机组、罩式退火炉、单机架四辊式平整机组、横切、纵切及重卷机组、连续热镀锌机组等。设计产品的品种主要有电工硅钢板、热镀锌板带等。产品具有使用规格范围宽、厚度精确、尺寸偏差小、表面光洁、板形好、性能稳定等特点。据此制定了轧制制度、并对轧辊强度进行了校核。另外，还校核了轧机年产量，计算了经济技术指标，并以连铸薄带夹杂物
2、的品种与特性为专题进行了论述。【关健词】： 冷轧带钢，轧制制度，全连续轧制，轧机，连铸薄带夹杂物Design of a cold strip plant with annual capacity of1.1 millions tonsAbstractThe design of a cold strip plant has been introduced and analyzed in this paper, according to ANSCs Cold strip plant 2# line. Its typical product is Q215 1.81700mm.Its main eq
3、uipments include shallow-tank picking train, 5-stand- fully-continuous cold rolling train, hood-type annealing furnace, single stand 4-high skin-pass train，6-zone pull-through type continuous annealing line，cross-cutting and slitting train and coiling train, ect. The products mainly include cold she
4、et and strip, hot-dip galvanized sheet and strip, hot-dip tinned sheet and strip. According to it, we established the rolling system, speed schedule and checked the rollers strength. Moreover, we checked the rolling mills productive capacity, cut-up units productive capacity and calculated the econo
5、mic and technology index. A special topic about performance and productive characteristic of automobile leaf-spring illuminate existing state of automobile leaf-spring and momentum of development of manufacturing technique. At last, this design close a plant plan made with AutoCAD software, a litera
6、ture in English and Chinese about dynamic recrystallization under warm deformation of a 304 type austenitic stainless steel , program about the rolling system, checked the rollers strength and the rolling mills productive capacity with Microsoft Visual C+.【Key words】sheet and strip, rolling system ,
7、 fully-continuous cold rolling, rolling millDesign of a cold strip plant with annual capacity of 1.20 millions tons ABSTRACTThe design of a cold strip plant has been introduced and analyzed in this paper, according to A.S.Cs 1780mm Cold Strip Mill Plant. Its typical product is Q215，0.51000mm. The pu
8、rpose is to design a 1.2 million Cold Strip Mill Plant.Its main equipments include continuous picking train,5-stand- fully-continuous Cold rolling train, cover-type annealing furnace,single stand 4-high skin-pass train,cross-cutting and slitting train, coiling train, etc. The products mainly include
9、 electrician silicon steel plate, hot-dip galvanized sheet and strip. Products with distinguishing features such as wide size, accurate thickness, small deviation in dimension, smooth surface, well flateness, stable property, etc.According to it, we established the rolling system and checked the rol
10、lers production ability. Moreover, we checked the rolling mills productive capacity,calculated the economic and technology index. A special topic about the species and characteristics of the mixture in continuous casting thin belt is explicated. 【Key words】:cold sheet and strip, rolling system, full
11、y-continuous cold rolling,rolling mill, the mixture of continuous casting thin belt目 录摘要IABSTRACTII1综述51.1发展历史51.2产品品种规格51.3生产方法51.4主要工序61.5冷轧的技术进步71.6本设计的目的和意义82产品方案设计及金属平衡表92.1原料的技术要求92.2产品方案92.3产品技术要求102.4金属平衡表113 设备参数选择113.1连续酸洗机组113.2五机架全连续轧机133.3 罩式退火机组143.4平整机组153.5横切机组163.6纵切机组173.7重卷机组173.8
12、热镀锌机组173.9电镀锌机组193.10连续退火机组204 轧制工艺过程及轧制制度的确定234.1轧制生产工艺流程图234.2各个工艺流程环节简介234.3轧制制度254.3.1 原料的选择254.3.2 压下规程制定255 轧辊强度校核285.1轧辊各部分尺寸285.2 轧机强度校核295.2.1支撑辊强度计算305.2.2工作辊强度计算305.2.3支撑辊与工作辊接触应力计算315.3轧机生产能力校核325.3.1轧机年生产能力校核325.3.2轧机小时产量计算335.3.3轧机平均小时产量335.3.4车间年产量计算335.4电机功率校核345.4.1.轧制力矩345.4.2.摩擦力矩
13、345.4.3.电机传动力矩355.5车间年产量计算355.5.1工作制度的确定355.5.2横切线生产能力365.5.3平整线生产能力计算365.5.4纵切线生产能力计算366各项经济技术指标386.1概述：386.2各项经济技术指标387专题：连铸薄带夹杂物的品种与特性407.1夹杂物的分类及来源407.2 铸坯中显微夹杂物分析417.2.1显微夹杂物的类型特点417.2.2 铸坯中显微夹杂物的数量457.2.3 铸坯中大型夹杂物分析457.3.连铸薄带的电镜观察48致 谢55参考文献56附录A：编程571压下规程编程572编制轧辊校核程序583年生产能力校核程序624电机校核程序641综
14、述1.1发展历史薄板、带材当其厚度小至一定限度（例如小于1mm）时,由于保温和均热的困难,很难实现热轧,并且随着厚宽比的增大,在无张力的热轧条件下,要保证良好的板型也非常困难。采用冷轧方法可以很好地解决这些问题,冷轧是指金属在再结晶温度以下进行轧制变形。首先,它不存在温降和温度不均的毛病,因而可以生产很薄,尺寸公差很严和长度很大的板卷。其次,冷轧板带材表面光洁度很高,还可以根据要求赋予各种特殊表面。我国冷轧宽带钢的生产始于1960年,首先建立了1700mm单机可逆式轧机,以后陆续投产了1200mm单机可逆式轧机,MKW1400mm偏八辊轧机,1150mm二十辊冷轧机和1250mmHC单机可逆式
15、轧机等。70年代投产了我国第一套1700连续式五机架冷轧机,1988年建成了2030 mm五机架全连续式轧机。现在我国投入生产的宽带钢轧机有18套,窄带钢轧机有418套。主要生产的产品有低碳薄板、高碳钢、合金钢、高合金钢、不锈耐热冷轧薄板、镀锌板、涂层钢板、塑料复合钢板和硅钢板等1。 1.2产品品种规格冷轧板带钢的产品品种很多,生产工艺流程亦各有其特点。具有代表性的冷轧板带钢产品是金属镀层薄板（包括镀锡板、镀锌板等）、深冲板（以汽车板为最多）、电工硅钢板、不锈钢板和涂层（或复合）钢板。成品供应状态有板或卷或纵剪带形式,这要取决于用户的要求。其品种和规格国家标准做了相应的规定,见表1.1及表1.2：1.3生产方法冷轧板带钢生产方法分为单片轧制和成卷轧制：单片轧制最早采用二辊式轧机,目前多采用四辊式冷轧机；成卷轧制采用二辊轧机、四辊轧机、偏八辊轧机、十二辊轧机、二十辊轧机等不可逆式和可逆式冷轧机。其生产工艺流程基本相似,主要是：坯料
