eaintheaccidentinvestigation,managementandreporting,eachpostshouldbedevelopedunderthissystemspecialistscheck,cleartheexaminations,time,cyclesandotherrelevantregulations.Strengtheningsitesupervisionandexamination,todetectandinvestigateillegalcommand,illegaloperationsandviolationsofoperatingrules.Secondsafetyreferstotheproductionsite,technologymanagement,equipment,facilities,andsooncanleadtoaccidentsrisksexist.1,accordingtotheextentofthesecurityrisks,solvingisdividedintoa,b,andclevelsofdifficulty;A-level:difficult,miningdifficulties,shallbereportedtothecompany'sproblems.B-class:difficulttoresolvedif听范读短文的录音。学生根据拼音自由朗读短文,不会拼读的音节求助同学或老师。听老师读短文,把自己不会认读的字和词听清楚。指名朗读,重点纠正“蓝”“绿”“帆”的读音。齐读短文,进一步熟悉短文。你最喜欢哪一句话?指导学生有感情地朗读。ficulties,shallconsistofminingorganizationstosolveproblems.C-class:fromsegmentsandbusinessrisksthatmustbeaddressedintheDepartment.2,open-pitmineunsafetypesinclude:electrical,transport,blasting,fire,andotherslope.3,accordingtotheseverityofthehazardfilledinbyunittroubleshooting,registrationform(seeatt河北联合大学本科毕业设计中期检查报告题目:年产280万吨1780热轧带钢车间设计学院:冶金与能源学院专业:材料成型及控制工程班级:09成型1班姓名:张志芳学号:6指导教师:杨海丽2013年4月20日eaintheaccidentinvestigation,managementandreporting,eachpostshouldbedevelopedunderthissystemspecialistscheck,cleartheexaminations,time,cyclesandotherrelevantregulations.Strengtheningsitesupervisionandexamination,todetectandinvestigateillegalcommand,illegaloperationsandviolationsofoperatingrules.Secondsafetyreferstotheproductionsite,technologymanagement,equipment,facilities,andsooncanleadtoaccidentsrisksexist.1,accordingtotheextentofthesecurityrisks,solvingisdividedintoa,b,andclevelsofdifficulty;A-level:difficult,miningdifficulties,shallbereportedtothecompany'sproblems.B-class:difficulttoresolvedif听范读短文的录音。学生根据拼音自由朗读短文,不会拼读的音节求助同学或老师。听老师读短文,把自己不会认读的字和词听清楚。指名朗读,重点纠正“蓝”“绿”“帆”的读音。齐读短文,进一步熟悉短文。你最喜欢哪一句话?指导学生有感情地朗读。ficulties,shallconsistofminingorganizationstosolveproblems.C-class:fromsegmentsandbusinessrisksthatmustbeaddressedintheDepartment.2,open-pitmineunsafetypesinclude:electrical,transport,blasting,fire,andotherslope.3,accordingtotheseverityofthehazardfilledinbyunittroubleshooting,registrationform(seeatt一、工作任务的进展情况在开题报告中,我主要讲述的是研究热轧带钢的意义、热轧带钢的发展过程、生产现状及未来的发展前景、本次设计的主要研究内容以及设计方案和进度安排。经过几周的资料查阅,并将资料按不同的环节进行了大致的分类整理。通过分析对比,并且参考国内几个大型热轧带钢厂的数据,初步选定了轧制线上主要设备的形式和布置方式,并且初步设计了压下规程。现将目前工作进展情况汇报如下:1.产品大纲的确定1.1产品大纲的编制原则1)满足国民经济特别需要,根据市场信息解决某些短缺产品的供应和优先保证国民经济重要部门对钢材的需要。2)考虑各类产品的平衡,尤其是地区之间产品的平衡。要正确处理长远与当前、局部与整体的关系。作到供求适应、品种平衡、产销对路、布局合理、要防止不顾轧机特点和条件一哄而上、一哄而下的倾向。3)考虑轧机生产能力的充分利用和建厂地区产品的合理分工。4)考虑建厂地区资源的供应条件,物资和材料运输的情况。5)要适应当前对外开放、对内搞活的经济形势,力争做到产品结构和产品标准的现代化。1.2产品大纲该车间为年产280万吨的1780热轧带钢车间设计,主要钢种为普碳钢,合金结构钢和不锈钢,采用粗轧和精轧两个阶段来完成不同的任务和要求。表1车间产品方案钢种牌号规格(mm)年产量(万吨)比例(%)普碳钢Q195,Q215Q235,Q255Q275(1.5~12.0)×(1400~1600)14050合金结构钢12Mn2A,16Mn2A30Cr,40Cr45Cr,45Mn(2.5~5.0)×(1400~1600)5620不锈钢1Cr13,0Cr18Ni91Cr18Ni91Cr18Ni9Ti(2.0~6.0)×(1000~1600)8430总量280eaintheaccidentinvestigation,managementandreporting,eachpostshouldbedevelopedunderthissystemspecialistscheck,cleartheexaminations,time,cyclesandotherrelevantregulations.Strengtheningsitesupervisionandexamination,todetectandinvestigateillegalcommand,illegaloperationsandviolationsofoperatingrules.Secondsafetyreferstotheproductionsite,technologymanagement,equipment,facilities,andsooncanleadtoaccidentsrisksexist.1,accordingtotheextentofthesecurityrisks,solvingisdividedintoa,b,andclevelsofdifficulty;A-level:difficult,miningdifficulties,shallbereportedtothecompany'sproblems.B-class:difficulttoresolvedif听范读短文的录音。学生根据拼音自由朗读短文,不会拼读的音节求助同学或老师。听老师读短文,把自己不会认读的字和词听清楚。指名朗读,重点纠正“蓝”“绿”“帆”的读音。齐读短文,进一步熟悉短文。你最喜欢哪一句话?指导学生有感情地朗读。ficulties,shallconsistofminingorganizationstosolveproblems.C-class:fromsegmentsandbusinessrisksthatmustbeaddressedintheDepartment.2,open-pitmineunsafetypesinclude:electrical,transport,blasting,fire,andotherslope.3,accordingtotheseverityofthehazardfilledinbyunittroubleshooting,registrationform(seeatt1.3坯料选择本设计所用板坯厚度一般为150mm,近代连轧机完全取消了展宽工序,以便加大板坯长度.而其长度则主要取决于加热炉的宽度和所需坯重。本次设计选取板坯规格为:板坯厚度:150mm板坯宽度:900~1600mm板坯长度:10m最大卷重:约30t厚度公差:±5mm宽度公差:±12mm长度公差:±30mm板坯表面质量:全部为无缺陷合格板坯。2车间布置及主要设备的选择2.1轧制总道次的确定取平均延伸系数为1.42,由产品厚度为3mm,进粗轧机的厚度为150mm。则根据公式nnphH可得:轧制总道次数为n=1216.1142.1lg3150lglglglglgpphH。所以确定道次数为12道。初步确定粗轧6道,精轧6道。2.2粗轧机1)粗轧机布置形式及数量的选择粗轧区的布置形式是根据产量、板卷重量等诸多因素决定的。由于精轧机的设计没有太大的区别,我们通常所说全连续式、3∕4连续式、半连续式和其它形式都是根据粗轧区轧机的布置形式来命名的。下面分别介绍粗轧机不同的布置形式。(1)全连续式所谓全连续式并不是说所有轧机构成连轧,只是说在整个轧制过程中轧件始终沿一个方向前进,没有逆向。全连续式粗轧机通常由4到6架不可逆式轧机组成,前几架为二辊式,后几架为四辊式。全连续式粗轧机的布置形式主要有两种:一种是全部轧机呈跟踪式连续布置;另一种是前几架轧机为跟踪式,后两架为连轧布置。典型的全连续式粗轧机的布置如图1所示。eaintheaccidentinvestigation,managementandreporting,eachpostshouldbedevelopedunderthissystemspecialistscheck,cleartheexaminations,time,cyclesandotherrelevantregulations.Strengtheningsitesupervisionandexamination,todetectandinvestigateillegalcommand,illegaloperationsandviolationsofoperatingrules.Secondsafetyreferstotheproductionsite,technologymanagement,equipment,facilities,andsooncanleadtoaccidentsrisksexist.1,accordingtotheextentofthesecurityrisks,solvingisdividedintoa,b,andclevelsofdifficult