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辽宁科技大学本科生毕业设计 第I页

摘 要

本设计说明书是参照鞍钢及宝钢冷轧薄板厂工艺流程，结合现代化生产实际要求设计了年产150万吨冷轧薄板钢厂的生产车间。典型产品为Q235B，20钢,08Al冷轧薄板带钢。该车间的主体设备包括：酸洗机组、五机架冷连轧机组、连续退火机组、单机架四辊式平整机组、横切、纵切及卷曲机组等。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。设计时以年产量为基础，结合各产品的市场前景合理地分配了各产品产量，制定了典型产品金属平衡表和轧制规程，并且优化了冷轧薄板的生产工艺，综合了各项技术经济指标，并绘制车间平面图。此外，本说明书还包括专题研究论文：Mg-4Zn-1.5RE合金轧制板材的再结晶组织观察与分析。

关键词： 冷轧薄板；热处理工艺；再结晶退火；车间设计

辽宁科技大学本科生毕业设计 第II页

ABSTRACT

This design manual is a steel work that produces and manufactures 1,500,000 tons cold roll lamella in one year combining modern capacity and physical requirements to design, according to the cold-rolled sheet of Anshan Iron and Steel and Baosteel. The typical products are Q235B, 20 steel and 08Al specifications cold-rolled sheet steel. This workshop equipment includes: pickling line, the five stand cold rolling mill, continuous annealing units, single frame four roller leveling unit, crosscut, longitudinal cutting and rewinding machine, etc. The product can be used in the characteristics of the wide specification range, precise thickness and small size deviation, smooth surface, good board shape, the stable performance and so on. People have assigned each product output reasonably and drew up the metal balanced of the typical model product and stranding system regulations combining each product's market prospect, based on annual output when designing. Not only those, but also people have optimized production process of the cold-rolled sheet, synthesized various technical and economic indicators, and drew the workshop plan. In addition, the manual also included a special subject search thesis: observation and analysis of the recrystallization of the Mg-4Zn-1.5RE alloy stranding system board material organizes.

Key word：

Cold rolled sheet; Heat treatment process; Recrystallization annealing; Workshop design

辽宁科技大学本科生毕业设计 第III页

目 录

摘 要 ................................................................................................................ I ABSTRACT ......................................................................................................... II 目 录 ................................................................................................................. III 1 综 述 ............................................................................................................... 1

1.1冷轧薄板简介 .................................................................................................................. 1 1.2冷轧薄钢板生产工艺特点 .............................................................................................. 2 1.3冷轧钢板的分类 .............................................................................................................. 3 1.4冷轧薄板的质量控制 ...................................................................................................... 3 1.4.1 钢的化学成分对成品性能的影响 ........................................................................... 3 1.4.2 热轧带钢对冷轧钢板性能和组织的影响 ............................................................... 5 1.4.3原料的几何尺寸对冷轧成品尺寸的影响 ................................................................ 6 1.4.4坯料常见缺陷以及对冷轧生产的影响 .................................................................... 7 1.4.5退火工序中存在的缺陷 ............................................................................................ 8 1.4.6冷轧工艺的表面缺陷 ................................................................................................ 9 1.5冷轧薄板钢生产的发展 ................................................................................................ 11 1.6当今现代轧制工艺技术的特点 .................................................................................... 13 1.6.1大力开发高精度轧制技术 ...................................................................................... 13 1.6.2轧制过程的自动控制和智能控制技术 .................................................................. 13

2 产品方案确定 ................................................................................................. 14

2.1产品方案 ..................................................................................................................... 14 2.2 生产方案 .................................................................................................................... 14 2.3产品性质 ..................................................................................................................... 15

3 冷轧薄板轧制工艺过程 ................................................................................. 16

3.1轧制工艺过程 ................................................................................................................ 16 3.2 各工艺流程环节简介 .................................................................................................... 17 3.2.1酸洗 .......................................................................................................................... 17 3.2.2冷轧 .......................................................................................................................... 20 3.2.3热处理 ...................................................................................................................... 24 3.2.4精整 .......................................................................................................................... 35 3.3金属平衡表的制定 ........................................................................................................ 37 3.3.1金属平衡 .................................................................................................................. 37