年产63万吨热轧线材车间设计
摘要
依照毕业设计的要求，设计年产63万吨的热轧高速线材生产车间，采纳单线轧制方式。
产品规格为Φ5.5~16mm，单卷盘重约2吨。
本设计产品包括碳素结构钢和优质碳素钢。
本车间设计的内容要紧有：产品大纲和金属平衡表的制定；设计工艺方案和工艺流程；工作制度的确定及轧机生产能力分析；要紧设备的选择；辅助设备的选择及计算；车间平面布置及起重运输；车间技术经济指标；环境爱护；孔型设计；轧机力能参数计算及电机设备校核等。
本设计原料采纳连铸坯，以减少金属的损失，而且连铸坯的组织结构较好，这也提高了产品的质量；还能够减少轧制间隙时刻，提高生产率。
加热炉为步进梁式加热炉，进出料方式采纳侧进侧出，以保证炉子的严密性，加热能力为120t/h。
加热炉由微机操纵，出炉温度为1050~1250°C。
轧机采纳高速线材轧机，全线均为无扭轧制，终轧保证速度为100 m/s，最高轧制速度为120m/s。
为改善产品微观组织，轧后采纳操纵冷却技术，轧后冷却通过水冷箱和一套斯太尔摩冷却运输系统来完成。
斯太尔摩冷却运输系统采纳延迟型冷却运输装置，它适用于冷却各类碳钢，具有较好的冷却效果。
总之，上述先进工艺技术和设备是本设计的产品高质量的重要保证；同时也为高线生产车间设计提供了一个专门好的样板。
关键词：车间设计高速线材线材轧机操纵轧制
A workshop of new hot rolled high-speed wire with the output
of 630,000 t/a
Abstract
According to the requirements of graduation design, a new single line of high-speed wire rod workshop with the output of 630,000 t / a will be built.Product specifications are for 5.5~16 mm diameter, each coil weighs about 2 tons. The products in this design include the carbon structural steel and high-quality carbon steel.
The main contents of the design are mainly as follows, formulation of products scheme and metal balance, design of technological plan and process, the determination of work routine and production capacity analysis of rolling mill, choice of the main equipment, choice and calculation
of the auxiliary equipment, the grooves design, the layout of workshop and hoisting and conveying equipment, check of roll strength and motor power, technical and economic indicators of the workshop and environmental protection etc.
The continuous casting billet is used as raw materials in this design to reduce the metal loss. The better microstructure of the billets can also improve the quality of the product and reduce the rolling gap time to increase productivity.
The reheating furnace is a walking beam type furnace which is side entry and side exit to ensure the tightness of the furnace. The heating capacity is 120t / h. The furnace is controlled by the computer. The exit temperature is 1050~1250°C.
The high-speed wire rod mill is used in this workshop. No twist rolling is realized across the rolling line. The finishing ensure speed is 100 m / s, maximum rolling speed of 120m / s.
The controlled cooling technology is used after rolling through the cooling water box and a Stelmor cooling conveyor system to improve product microstructure. Stelmor transportation system by the delayed cooling type cooling transport devices, which applies to various carbon steels and has better cooling effect.
In short, the advanced technology and equipment, the design of the product is an important guarantee of high quality and providing a good model for the high speed wire production workshop designing.
目录
引言 (1)
1 产品方案和金属平衡 (4)
1.1 车间产品大纲 (4)
1.2 产品质量执行标准及产品交货条件 (4)
1.2.1 执行标准 (4)
1.2.2 交货条件 (4)
1.3 原料 (5)
1.3.1 原料来源和年需要量 (5)
1.3.2 钢坯尺寸和质量要求 (5)
1.3.3 连铸坯的化学成分 (5)
1.4 金属平衡表 (5)
2 设计方案 (7)
2.1 轧机数量的确定 (7)
2.2 轧机布置方案 (8)
3 工艺流程 (9)
3.1 工艺流程图 (9)
3.2 生产工艺流程简述 (10)
3.2.1 坯料的选择及加热 (10)
3.2.2 坯料的除鳞 (10)
3.2.3 坯料的轧制 (10)
3.2.4 冷却 (10)
3.2.5 后期工作 (11)
4 工作时刻及轧机生产能力分析 (12)
4.1 车间工作制度和年工作小时 (12)
4.2 轧机生产能力分析 (12)
5 要紧设备的选择 (14)
5.1 加热炉 (14)
5.1.1 炉型选择 (14)
5.1.2 加热炉尺寸的确定 (14)
5.2 轧机形式以及轧辊材质的选择 (15)
5.2.1 轧机的选择 (15)
5.2.2 轧辊尺寸参数的确定 (15)
5.3 粗轧机组 (17)
5.4 中轧机组 (17)
5.5 预精轧机组 (18)
5.6 精轧机组 (18)
5.7 减定径机组 (18)
6 辅助设备的选择及计算 (19)
6.1 P/F线运输能力验算 (19)
6.1.1 “C”形钩的运输周期 (19)
6.1.2 “C”形钩数量确定 (19)
6.2 斯太尔摩冷却运输线的选择 (19)
6.3 其它辅助设备的选择 (21)
7 车间平面及起重运输 (25)
7.1 车间平面布置 (25)
7.1.1 车间平面布置的原则 (25)
7.1.2 平面布置的内容 (25)
7.1.3 轧制设备间距的确定 (26)
7.2 车间原料和成品库能力的计算 (26)
7.2.1 有效方式 (26)
7.2.2 原料库和成品库堆放面积的负荷计算 (27)
7.3 起重运输设备的选择和性能参数 (28)
7.4 其它设施的布置 (28)
8 孔型设计(Φ7.0mm) (29)
8.1 孔型设计的预备计算 (29)
8.1.1 延伸系数的分配 (29)
8.1.2 26道次孔型系统选择 (30)
8.2 减定径及精轧机组孔型设计 (30)
8.2.1 圆孔型设计 (31)
8.2.2 椭圆孔型设计 (34)
8.3 预精轧机组孔型设计 (38)
8.3.1 圆孔型设计 (38)
8.3.2 椭圆孔型设计 (40)
8.4 中轧机组孔型设计 (41)
8.4.1 圆孔型设计 (41)
8.4.2 椭圆孔型设计 (43)
8.5 粗轧机组孔型设计 (45)
9 轧机力能参数计算及电机设备校核 (52)
9.1 轧制压力的计算 (52)
9.1.1 平均单位压力计算 (52)
9.1.2 总轧制压力 (53)
9.2 轧辊强度校核 (53)
9.2.1 孔型在轧辊上的配置 (53)。