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年产88万吨热轧线材车间设计
摘 要
自高速线材轧机和轧后控制冷却技术问世以来，随着线材生产技术本身的日益完善和控制技术的进步，高速线材轧机的产品在规格范围、轧制速度、尺寸精度等各方面都有了大大提高，本设计就是基于上述技术条件之上的。本设计拟建一个年产88万吨的高速线材车间，因轧制速度较高，故采用单线轧制工艺，产品规格为Φ6～16㎜，单卷盘重约1.8吨，钢种为普通碳素结构钢。
本设计的设备和工艺均采用目前最先进的，具体如下：
原料采用连铸坯，以减少金属的切损，而且连铸坯的组织结构较好，这也提高了产品的质量；同时对于年产量较大的规格的产品，可采用连铸坯热装热送工艺，这样既可以降低烧损和能耗，还可以减少轧制间隙时间，提高生产率；
加热炉为步进梁式加热炉，进出料方式采用侧进侧出，以保证炉子的严密性；轧机采用高速线材轧机，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，轧后采用控制冷却技术，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用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，上述先进技术和设备是本设计的产品高质量的重要保证。
关键词： 线材 高速线材轧机 热装热送 控制冷却
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A new plant design of high-speed wire rod with the annual output of 880,000 tons
Abstract
Since the high-speed wire rod mill and the control of cooling after rolling came out, with the wire production technology itself increasingly improved and control technology progressed, high-speed wire rod mill products greatly improved in the size range, rolling speed, precision of size and so on, and this design is based upon the technical conditions. The design proposed an annual output of 880,000 tons of high-speed wire rod plant, due to higher rolling speed, so it will be a single rolling process. The product specification are Φ6 ~ 16 mm, single-reel weighs about 1.8 tons, the steel is the ordinary carbon steel structural.
The design of the equipment and techniques are used the most advanced, as follows: Continuous casting slab of raw materials used to reduce the metal cutting loss, and better organizational structure of continuous casting, which improves the quality of products; while larger output specifications for the product, can be used hot billet hot charging delivery process, both to reduce the burning and energy consumption can also reduce the rolling gap time and increase productivity;
Furnace for the walking-beam furnace, and out of the side into the side of the feeding method adopted out to ensure tightness of the furnace; mill using high-speed wire rod mill, across the board are not twisting rolling, finish rolling to ensure speed of 100 m / s, The maximum rolling speed for the 120m / s. To improve the product microstructure, using controlled cooling after rolling technology, cooling after rolling through the water tank and a set of Stelmor cooling transport system to complete. Stelmor cooling transport system with transport delay type cooling device, it applies to all kinds of carbon steel cooling with better cooling effect.
In short, the advanced technology and equipment design is the important guarantee for high quality products.
Key Words： wire high-speed wire rod mill hot charge rolling controlled cooling
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目 录
引 言 ....................................................................................................................................... 1 1产品方案和金属平衡表 ...................................................................................................... 2
1.1产品大纲 .................................................................................................................... 2 1.2产品质量执行标准及产品交货条件 ....................................................................... 2
1.2.1执行标准 .......................................................................................................... 2 1.2.2交货条件 .......................................................................................................... 2 1.3原料 ............................................................................................................................. 3
1.3.1原料来源和年需求量 ..................................................................................... 3 1.3.2钢坯尺寸和质量要求 ..................................................................................... 3 1.3.3对表面质量和内部质量的要求 .................................................................... 4 1.3.4连铸坯的化学成分 ......................................................................................... 4 1.4金属平衡表 ................................................................................................................ 4 2.设计方案 ............................................................................................................................... 5
2.1轧机数量的确定 ........................................................................................................ 5 2.2轧机布置方案 ............................................................................................................ 5 3.工艺流程 ............................................................................................................................... 6
3.1工艺流程 .................................................................................................................... 6 3.2生产工艺流程简述 .................................................................................................... 7 4工作时间及轧机生产能力分析 .......................................................................................... 8
4.1车间工作制度和年工作小时 ................................................................................... 8 4.2轧机生产能力分析 .................................................................................................... 9 5主要设备的选择 ................................................................................................................. 10
5.1加热炉 ....................................................................................................................... 10
5.1.1炉型选择 ........................................................................................................ 10 5.1.2加热炉尺寸的确定 ....................................................................................... 10 5.2轧机形式以及轧辊材质的选择 ............................................................................ 11
5.2.1轧机的选择 .................................................................................................... 11 5.2.2轧辊尺寸参数的确定 ................................................................................... 12
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5.3粗轧机组 .................................................................................................................. 13 5.4中轧机组 .................................................................................................................. 13 5.5预精轧机组 .............................................................................................................. 14 5.6精轧机组 .................................................................................................................. 14 6辅助设备的选择及计算 .................................................................................................... 14
6.1 P/F线运输能力验算 ............................................................................................... 14
6.1.1 “C”形钩的运行周期 ..................................................................................... 14 6.1.2 “C”形钩的数量 ............................................................................................. 15 6.2斯太尔摩冷却运输线的选择 ................................................................................. 15 6.3其它辅助设备的选择 .............................................................................................. 17 7车间平面及起重运输 ........................................................................................................ 21
7.1车间平面布置 .......................................................................................................... 21
7.1.1车间平面布置的规则 ................................................................................... 21 7.1.2车间平面布置的内容 ................................................................................... 21 7.1.3轧制设备间距的确定 ................................................................................... 22 7.2车间原料和成品库能力的计算 ............................................................................. 22
7.2.1有效方式 ........................................................................................................ 22 7.2.2原料库和成品库堆放面积的负荷计算 ...................................................... 23 7.3起重设备的选择和性能参数 ................................................................................. 23 8车间经济技术 ..................................................................................................................... 24 9环境保护 ............................................................................................................................. 26
9.1编制依据 .................................................................................................................. 26 9.2本设计中对污染的防治及综合治理 ..................................................................... 26
9.2.1绿化 ................................................................................................................ 26 9.2.2水质处理 ........................................................................................................ 26 9.2.3噪音 ................................................................................................................ 26 9.2.4大气污染 ........................................................................................................ 26 9.2.5氧化铁皮 ........................................................................................................ 27
致 谢 ............................................................................................................................... 80 参考文献 ................................................................................................................................ 27
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附录A 孔型设计（Φ8mm） .............................................................................................. 28 附录B 轧机力能参数计算与校核 ................................................................................... 62 附录C 程序 ....................................................................................................................... 73
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