冷轧机组厚度控制实现方式分析及应用

研究冷轧带钢压下厚度控制和流量厚度控制实现方式的原理,在分析单机架可逆轧机和冷连轧机组的张力控制方式的基础上,指出单机架可逆轧机以及冷连轧机组采用入口恒张力控制的第1机架需采用压下厚度控制实现方式,采用入口张力极限控制的机架需采用流量厚度控制方式,并从流量厚度控制的角度剖析冷连轧轧制特性,分析、比较了流量厚度控制方式在冷连轧机组常规AGC系统、全秒流量AGC系统、扩展秒流量AGC系统中的不同应用。最后总结出2种厚度控制方式在工程应用中的设计原则。     

考虑带钢压下率的冷连轧机最佳工作辊径配置

在分析轧机工作辊径对轧机横向刚度和纵向刚度的影响的基础上,研究了在考虑带钢压下率的情况下冷连轧机的最佳工作辊径配置问题。可以看出,通过优化冷连轧机的工作辊辊经配置有利于减小和消除热轧来料的厚度和板形扰动,提高冷轧成品的厚度和板形控制精度;同时易于冷连轧机来料的咬入,提高冷轧带钢出口轧制速度;配辊方案将冷连轧机工作辊辊径按机架分成两个部分,易于现场工作辊配辊的实现。     

基于模型驱动的冷轧带钢虚拟建模与系统仿真

 为解决冷轧带钢板形和轧机动作的模型驱动与人机交互问题,以冷轧带钢出口张应力横向分布和板带屈曲判别模型为基础,提出了基于VRML高程格网（Elevation Grid）节点的虚拟带钢建模技术,实现了边浪、中浪等常见板形缺陷的量化解析预测和三维动态可视化呈现,并结合国内某厂2 230 mm冷连轧机组出口板形仪实测数据,将浪形几何参数数值预测结果与现场带钢板形缺陷进行对比,两者吻合良好。在此基础上,以650 mm UCM单机架可逆冷轧机组为对象,利用MATLAB/Simulink 3D Animation工具箱,将轧机、带钢、厂房车间等VRML三维场景与轧制过程Simulink仿真模型进行了通讯集成,为虚拟现实系统开发奠定了基础。     

几种轧机的最高速度

机 I最高速度:米/秒l 公 司 和 ?__一…线材冷轧带钢热轧带钢连续炉焊管双机架带钢平整机可逆式带钢冷轧机电镀锡作业线100.0 41.7 30.8 20.O 38.2 20 10.7 日本神户制钢公司加吉川厂 新日铁公司君津厂 法国索里梅公司 苏联某厂 比利时某厂 日本大洋钢铁公司船桥厂 英国钢铁公司埃布一维尔厂 几种轧机的最高速度$冶金工业部情报研究总所     

冷连轧自动厚度控制优化

通过分析冷轧带钢厚度偏差产生的原因,探索和研究包钢酸洗冷连轧机组轧机自动厚度控制系统原理,了解冷轧轧机消除热轧原料厚度偏差和冷连轧机本身的扰动产生的厚差。     

冷连轧机引料装置的改进

冷连轧机引料装置的改进姚林，周敬忠（鞍钢冷轧薄板厂）鞍钢冷轧厂四机架冷连轧机是从德国引进的二手设备，其引料装置（图１所示）为该机组头部的重要设备，作用是将带钢卷头部引进轧机以便轧制。当轧机穿带引料时，夹送辊转动将带钢头部送至轧机，而当轧机正常轧制时，...     

八辊轧机乳化液吹扫的改造

介绍了八辊五连轧机组乳化液吹扫的改进措施及改进后的使用情况,为八辊轧机以及其它多辊轧机减少带钢表面乳化液残留提供了有效的解决途径,改善了冷轧带钢板面质量.这些八辊轧机的改进手段同样对单机架可逆轧机有着重要的借鉴意义.     

冷连轧机厚度控制系统设计及优化

厚度控制精度是冷轧带钢质量的核心指标,因此冷连轧机带钢厚度及板形控制精度一直以来是冷连轧机研究的重点。文章以攀钢西昌冷连轧机建设项目为平台,对冷连轧机厚度控制系统的设计及实现进行深入研究,通过一年多的调试与总结取得了较好的效果。本论文中的冷连轧机厚度控制系统是基于日立电气R700 PLC平台,根据现场实际要求,作者对冷连轧机厚度控制系统进行深入研究,针对存在的厚度及板形精度问题进行了优化,对实际生产有一定的指导作用。     

可逆式冷轧机垂直振动测试与仿真分析

某双机架可逆式冷轧机组在轧制带钢过程中,F2轧机发生了异常振动现象,在带材和支承辊表面上生成明暗条纹。通过现场综合测试、信号分析、理论研究与计算机仿真,确定引起异常振动的原因,提出了抑制振动的措施。     

酒钢1800冷连轧机组机型的选择

就酒钢1800五机架六辊冷连轧机组工艺方案的确定、主要工艺参数的选择和关键设备的选型做了详细的阐述和对比,针对冷连轧机组和双机架可逆连轧机两种工艺方案、五机架六辊和四机架六辊两种设备配置方式。经多方面分析论证,最终得出结论：五机架六辊冷连轧机组是酒钢1800冷连轧机组的最优选择。     

熔炼次数对M17返回料合金成分、组织和性能的影响

实验结果表明,M17铸造高温合金(%:0.16C、8.79Cr、5.79A1、4.93Ti、3.29Mo、15.20Co、0.78V、0.015B、0.073Zr、0.002S、0.001P、0.001 1O、0.001 0N)经25 kg真空感应炉返回重熔后,Si含量随重熔次数的增加而略有增加,合金中主要元素和其它杂质元素S、P、H的含量变化不大,而氧、氮略有增加;合金中初生碳化物由新合金中的草书体逐渐向返回合金块状转变,初生碳化物的遗传性堵塞合金凝固时的补缩通道,使返回料合金的疏松倾向增大,高温塑性下降较大。     

China's Major Non-ferrous Metals Imports & Exports

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Zinc Production by Province in 2014

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80% of Chinese Firms Purchasing Overseas Mines Ended up in the Red

<正>Minmetals Resources acquired the world’s largest copper mine under construction for USD5.85 billion.One after another,listed companies Jien Nickle,China Molybdenum and Chihong Zinc and Germanium raised money to get involved in overseas mining projects…SOEs and private enterprises are engaged in a frenzy of overseas mine purchasing.A reporter with Economic     

Copper Processing Profit Dropped Sharply,Copper Consumption Will Face Impact in the Second Half of the Year

正Judging from China’s copper consumption field,the biggest consumption unit is electric power,which accounts for 47%of total consumption;it is followed by light industry sector,including household electrical appliance,machinery,durable goods and hardware etc,which accounts for 22%of total consumption;followed by transportation field,     

Central Geological Prospecting Fund Newly Added 16.47 Million Tonnes of Bauxite in 2013

正In 2013,the Central Geological Prospecting Fund(CGPF)Project newly discovered 15 ore fields,including 3 large above ore fields,and 5medium sized ore fields.The reporter learned from the recently published"Annual Report of Central Geological Prospecting Fund Project(2013)"that,from 2006 to 2013 the CGPF     

Manufacturers of Copper Tube for Central Air Conditioner Use Face Mounting Pressure in the Final Quarter of the Year

正This year,the investment growth rate of real estate industry continued to slow down,sold area of commercial housing also dropped significantly,which brought huge pressure to the domestic air conditioning manufactures.In the first half of the year,by relying on high growth in national financial expenditure,along with investment in public infrastructure     

Xinjiang Ranks No.1 in Production of Primary Aluminum in China

正Kang Yi,Honorary Chairman of China Nonferrous Metals Industry Association,said recently at the Forum on Development of the Non-ferrous Metals Industry in Central and Western China held in Zhengzhou that,as more and more electrolytic aluminum factories in Xinjiang came into operation,the electrolytic aluminum output of Xinjiang had reached2,275,000 tons in the first 7 months this year,     

Shenhuo Coal Industry and Electricity Power Completed800,000 t/a Aluminum Project in Xinjiang

正"Xinjiang project has been completed according to schedule,but total completion and total start of production are two different concepts,after completion it still needs a gradual process of reaching production target."On the morning of November 3,Shenhuo Coal Industry and Electricity Power told investors the above statement on the investor interaction platform.     

Guangdong Metal Transaction Center has Become the Second Largest Precious Metal Transaction Platform Nationwide

正The reporter learned from Guangdong Province Precious Metal Transaction Center that in 2013the Center maintained healthy development momentum,and had become the second largest precious metal transaction platform in China in terms of market size;currently Guangdong is quickening steps of financial innovation for the Center,aiming to build a transaction center with international core competitiveness.