酒钢中板轧机主传系统故障探析

本文针对酒钢中板轧机主传系统自投产以来出现的故障进行了总结和探析,并对轧机主传CYCLO工作原理、基本操作及运行状态监控进行了阐述。     

酒钢中板轧机主电机转子阻尼绕组短路环链接片断裂分析

酒钢中板轧机主电机是中板的核心设备,它的可靠、稳定运行直接关系着中板的生产状况,本文结合2015年3月24日中板轧机主电机发生的阻尼绕组短路环链接片的断裂事故,有针对性的分析了发生断裂事故的原因,并对断裂造成的后果及风险进行了阐述和评估。     

一种可移动晶闸管保护装置在酒钢中板的应用

着重介绍了一种可移动晶闸管保护装置及这种装置在酒钢炼轧厂中板轧机主传交-交变频系统中的应用,并就其应用效果进行了阐述。     

基于PROFIBUS网络结构的全数字中板轧机主传动电控系统

基于PROFIBUS工业现场总线,研制了一种全数字四辊中板轧机主传动电控系统,使四辊中板轧机主传动电控系统真正实现了数字化、网络化控制.     

轧机主电机轴瓦烧瓦 放电分析

对中板轧机主电机轴瓦连续不断的出现烧瓦、放电原因进行了分析。介绍了针对不同原因所做的技术改进,以及改进后的使用情况。     

酒钢中板轧机AGC系统基本操作与常见故障分析

酒钢中板轧机AGC系统是中板的核心设备,它的运行稳定性直接关系着中板的产品质量,结合近年来AGC系统发生的一些常见故障,有针对性的对酒钢中板轧机AGC系统的原理和基本操作进行了阐述。     

中板轧机主传动万向接轴辊端接头断裂事故分析

采用机械测试、三维有限单元、金相组织分析等现代综合分析技术 ,对中板轧机主传动万向接轴辊端接头断裂事故进行分析。事故的主要原因是热处理工艺不当     

中厚板轧制速度设定模型的开发和应用

目前国内中厚板轧机主传速度基本上由操作员的经验来控制。实践证明,人工控制轧机轧辊转速存在很多弊端。本文针对该现状,在详细分析了中厚板轧制过程特点的基础上开发出一个新型的中厚板轧机主传速度设定模型。此模型判断如何选取轧机速度曲线图,首次提出根据轧制变形区各参数来计算不同压下量下的最大轧制速度以及咬入速度。将此模型实际应用于国内某中板厂的轧机速度设定计算中,使得轧制节奏变快,生产稳定性和安全性增强,具有较强的实用价值。     

电网电压波动对中板四辊轧机主传动系统的影响及对策

介绍了电网电压波动对中板四辊轧机主电机传动系统的影响和解决方法。根据中板四辊轧机主电机传动系统运行时的上级监控系统记录数据,以及直流电机电枢电压与变流器交流侧输入电压的关系,详尽地分析了直流快速自动开关跳闸故障原因,并提出具体的对策及措施。     

2800轧机主传动的BRP装置运行分析

本文简单介绍柳钢中板2800轧机主传动BRP整流装置的原理和调节单元的功能,并论述了该装置在运行中出现的事故和处理方法及分析结论。     

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.