摘要现今世界对环保、资源和能源的重视，要求汽车工业向轻量化、安全及节能方向发展。而实现车身结构轻量化的重要途径之一就是采用高强度车身材料，同时考虑到成本、加工成型性能等因素，高强度热轧钢已经成为汽车钢板需求、开发方向的主体。本次设计要求是年产200万吨的汽车热轧钢板，选取了较为典型的P510钢，产品厚度为7。8mm，宽度为1250mm，轧制的粗轧道次为6道，精轧7道，其中粗轧机为半连续式，根据年产量合理地选择产品方案、工艺设计，并进行设备校核以及年产量的计算，最后根据实际情况来确定厂房的平面布置，本次设计的参数主要是根据经验以及通过计算得出，整个设计以技术先进为目标，以理论联系实际为要求，努力追求经济效益的最大化。87186

毕业论文关键词：高强度热轧钢；汽车钢；车间设计

Abstract Today, the world's attention to environmental protection, resources and energy, the requirement of the automotive industry to light weight, safety and energy saving direction。 And realize the light weighting of car body structure is one of the most important ways is to use high strength body material, taking into account the cost, processing properties and other factors, high strength hot rolled steel has become the main body of the steel sheet for automobile demand, development direction。 The design requirements is the annual output of 200 million tons of hot rolled steel plates for automobile, select the typical P510 steel, thickness 7。8mm, width of 1250mm, rolling roughing pass for six, seven finishing, which roughing mill for semi continuous type, according to the annual output of a reasonable choice of products plan, process design and equipment check and calculation of annual output, finally according to the actual situation to determine the plant layout, the design parameters is mainly based on experience and calculated。 The whole design technology advanced as the goal, to integrate theory with actual requirements, and strive to pursue the maximization of economic benefits。

 Keywords: High-strength hot-rolled steel; automotive steel;plant design

目  录

第一章 前言 1

1。1 研究背景 1

1。2 汽车热轧钢的研究现状 1

1。3 本设计的目的和意义 2

第二章 建厂依据及产品大纲 3

2。1 建厂依据 3

2。1。1 可行性研究 3

2。1。2 地理与资源 3

2。2 确定产品大纲 3

2。3 产品钢种 4

2。4 产品规格 4

2。5 确定工艺流程 5

2。6 金属平衡表 5

第三章 轧制设备的选择 6

3。1 粗轧机的布置形式及数量的选择 6

3。2 粗轧机的各种参数 7

3。3 确定轧辊材质 8

3。4 四辊轧机的主要性能 8

第四章 工艺参数与金属平衡 10

4。1 压下规程的设定 10

4。1。1 粗轧机的压下量分配 10

4。1。2 精轧机的压下量分配