1780mm热轧带钢热卷箱开尾销动作异常问题分析与控制

针对1780mm热轧带钢生产线热卷箱在使用过程中出现的开尾销动作异常问题进行了系统分析,发现开尾销动作异常受带钢材质、雾气、设备精度和工艺参数等多种因素影响。通过改善设备环境、提高关键设备精度、增加设备连锁和优化工艺参数等措施,避免了热卷箱开卷时开尾销动作异常问题。     

莱钢1500热轧带钢生产线及工艺技术浅谈

介绍了莱钢1 500热轧带钢生产线的基本状况、生产工艺流程、主要设备组成及平面布置特点,并着重介绍了采用的半连续式工艺、热送热装工艺,加热炉、热卷箱等新设备以及多级计算机控制系统等。     

热卷箱卷形优化的研究

针对承钢1780热轧带钢生产线热卷箱在使用过程中出现的成卷异常、卷形不良和开卷跑偏等异常问题进行了系统分析,并采取了技术性措施。通过提高关键设备精度、定期更换辊子和优化工艺参数等措施,较好地优化了热卷箱卷形,提升了产品质量。     

热卷箱控制系统

阐述了凌钢引进的９００ ｍ ｍ 热卷箱的设备组成和工作原理，控制系统的速度匹配、负荷平衡、尾部定位、移卷臂 Ａ Ｐ Ｃ 等控制功能。实践证明：在带钢热连轧生产中采用热卷箱技术可以减小成品带钢的头尾厚度公差，提高产品质量。     

热卷箱弯曲辊升降液压系统分析及应用

热卷箱广泛应用于热连轧带钢生产线,弯曲辊是热卷箱的关键部件之一。该文主要介绍热卷箱弯曲辊的工作过程,分析弯曲辊升降液压控制回路的工作原理和特点,为弯曲辊液压系统的设计、现场调试提供参考。     

热卷箱在唐钢1700热连轧生产线中的应用

介绍了唐钢1700热连轧生产线热卷箱的设备概况、操作过程及其控制方法、功能及应用效果。实践证明,应用热卷箱后中间坯温降由1.8℃/s减少到0.07℃/s,带钢全长可获得均匀细小的珠光体组织、力学性能废品率由2.3%下降到1.2%,综合成材率提高0.3%～0.6%。     

热卷箱自动控制系统简介

简要介绍承钢热轧带钢生产线中的热卷箱自动控制系统的配置及控制系统的功能。     

无芯轴热卷箱技术及其在不锈钢热轧生产中的应用

文中简述了热卷箱技术在热轧带钢生产中的发展历史,重点介绍了热卷箱的主要设备组成和工作原理,同时对热卷箱减少中间坯温降、恒速轧制、缩短粗轧机与精轧机之间距离、提高带钢成材率和改善产品质量等技术特点进行了论述;同时结合国内2250mm不锈钢热轧带钢轧机实际生产情况分析了新式无芯轴热卷箱在不锈钢极限规格生产、薄规格轧制稳定性、产品边部和表面质量改善等方面的积极作用。     

一种新型热卷箱弯曲辊的标定装置

热卷箱的弯曲辊在生产中需要周期性进行辊缝位置标定,以保证弯曲辊的辊缝精度。针对1780热轧带钢生产线热卷箱区域弯曲辊辊缝标定异常情况进行分析。新设计了一种结构简单、操作方便的弯曲辊标定装置,提高了标定精度和效率,同时保证了操作人员的人身安全。     

热卷箱技术及其在热带钢轧机上的应用

在热带钢轧机中采用热卷箱技术，可减少中间带坯头尾温差、降低忆机组能耗、改善产品质量和提高产量。介绍了热卷箱在凌钢的应用并阐述了热卷箱技术的特点和控制功能，以及应用效果。     

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.     

Seven Rare Earth Projects Involving Close to 3 Billion Yuan Investment Landed In the HighTech Zone

正On May 22,Baotou Rare Earth Industry Cooperation Consultation MeetingProject Agreement-signing Ceremony was held in Ningbo,nearly 40 enterprises from Ningbo,Guangdong,Hunan,and Shanxi participated in project consultation.After multi-lateral communication,agreements were signed for a total of 7 rare earth projects successfully.