激光板形测量技术现状及发展

简单描述激光热轧带钢板形测量技术的现状 ,介绍几种采用激光测量技术的板形测量原理 ,分析各种技术方案的特点 ,结合作者开发多束激光板形仪工作 ,指出热轧带钢板形测量技术今后的发展方向     

热轧带钢激光平坦度仪的研究与设计

介绍了用于热轧带钢板形检测的激光平坦度仪工作原理，开发了平坦度在线连续测量仪及其系统软件。系统采用激光器和线阵CCD组成的位移测量装置，同时测量带钢操作侧、中心和传动侧的带钢纤维长度，得到平坦度和非对称度信息。仪器投入运行后，取得了满意的测量效果。     

激光平坦度仪信号检测与处理系统的分析与改进

热轧带钢平坦度在线检测是现代热轧带钢板形控制领域最重要的检测项目之一,直接影响带钢的最终质量。由于热轧的特殊环境,以非接触式的激光三角法测量带钢纵向纤维的相对延伸,仍是目前工业生产中广泛采用的一种平坦度测量方法。     

Burns Harbor80英寸热轧机带钢板形在线测量

1985～1986年,Bethlehem钢铁公司在BurnsHarbor 80英寸带钢热轧机上开发了一个在线板形测量系统。采用了两台在线Weston 2000 X射线测厚仪,仪器可分别借助齿条齿轮传动装置横越钢板进行扫描;每台仪器的计算机都与一台独立的板形     

热轧带钢厚度和平直度的激光测量装置

热轧带钢厚度和平直度的激光测量装置ＢｒｕｎｏＲｉｃｈｔｅｒＧｍｂＨ＆Ｃｏ．生产热轧带钢厚度变化和平直度非接触激光测量装置。装置由发送器、接收器和信号处理计算机构成。发送器发射激光，以特定的角度投射在带钢表面上，扫描频率２００Ｈｚ。接收器接收来自带钢表...     

一种新的带钢平坦度在线检测方法的研究

提出了一种新的基于激光、CCD成像技术的非接触式带钢平坦度检测方法———激光角度位移法。该方法兼有激光位移法和激光光切法优点:具有激光测量方法结构简单、无损带钢表面、易于维护和容易实现在线数据处理的特点,且使用线激光源照射到被测带钢表面上形成的高亮度的线光斑,使得CCD摄像机可一次得到该线光斑上所有点的位置数据,从而提高测量的速度和效率,并且可以根据需要提取相应的板形信息用于实现板形控制,可广泛适应于冷轧和热轧的生产。     

冷轧钢卷边包缺陷产生根源的工业实验

 冷轧钢卷边包缺陷严重影响带钢的板形和表面质量。在攀钢大量现场边包调查分析的基础上,提出探索边包根源的实验方案并现场跟踪测量。通过对实验结果的对比分析,表明钢卷的边包虽然出现在冷轧,但不是由冷轧带钢的板形不良引起,而主要是由热轧带钢的边部局部高点厚度大于中间厚度引起,并且热轧带钢的楔形又加剧了冷轧钢卷边包。为冷轧钢卷边包缺陷的治理指明了方向。     

热轧带钢板形质量改进

通过对热轧带钢板形问题产生的原因进行分析，制定了有针对性的改进措施，使热轧带钢板形质量得到明显提高。     

热轧高强钢带卷板形质量控制

河钢集团唐钢公司所产热卷板形缺陷多以带卷双侧浪及板形翘曲为主,严重影响了下游用户开平质量、激光落料等质量控制的稳定及生产效率的提升。本文从带钢肋部(距带钢边部100 mm位置)与边部温差控制、热轧工艺参数设定及层冷工艺选用、带钢两侧侧喷开启等方面分析了热轧高强钢板卷DS侧边浪产生的原因,并给出了减小热轧带钢内应力的措施。发现,带钢边部温度较带钢肋部温度低约50～90℃不等,此区域带钢处于热传递最大区域,带钢向外传递出去的热量最多,故该区域温度呈急剧下降趋势,温度变化大,是带钢最终板形产生边浪的主因;热轧带钢肋部与边部温差与定宽机减宽量及终轧温度有关,200～250 mm的定宽量较50～100 mm的定宽量带钢边部温降可减少约20℃,终轧温度由895℃降到885℃,带钢的肋部与边部的温差可减小约10～20℃;而层冷工艺的选择应根据精轧出口带钢横断面温差,结合各钢种、规格在冷却过程中带中与带边组织及晶粒均匀性实施综合考虑,以更好地控制热轧带卷板形质量。     

1580热轧机板形控制优化

板形是热轧带钢极其重要的质量指标之一。宝钢１５８０ｍｍ热连轧机引进的ＰＣ轧机能有铲地控制板形。通过对数学模型，工艺参数的优化，改善了板形控制功能，使１５８０ｍｍ热轧带钢的浪高基本控制在１５ｍｍ以下。     

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.