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介绍了首钢第二炼钢厂在大板坯连铸机上试用气动型浸入式水口快速更换装置的情况,并对应用效果进行了总结。 相似文献
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《不锈(市场与信息)》2009,(12)
近日,不锈钢事业部炼钢厂中间包浸入式水口快速更换装置项目取得阶段性成果,实现了中间包浸入式水口在线更换,提高了中间包浇铸400、430系列不锈钢的连续浇铸能力。 相似文献
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介绍了近5年来武钢第二炼钢厂对中包浸入式水口材质和工艺的改进情况,这些改进对于提高铸坯质量,稳定生产起了重要作用。 相似文献
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浸入式水口堵塞的机理及其改善措施 总被引:2,自引:0,他引:2
研究了武钢第二炼钢厂浸入式水口堵塞的形成机理。浸入式水口中 Al2 O3的堵塞降低了连铸生产率 ,也是引起钢材表面缺陷的一个原因。堵塞沉积主要是由于氧化物颗粒附着到浸入式水口耐火材料的内表面 ,继而烧结在一起所致 ,小沉积颗粒的烧结形成不规则的网状物 ,耐火材料和钢水间反应层的形成加速沉积 ,尤其是当耐火材料中含有可还原组分 (Si O2 )。提出了改善水口堵塞的措施 ,主要有改善水口材质、改善和维护水口形状、改善钢水清洁度、对钢水夹杂物进行变性处理。 相似文献
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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。 相似文献
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正Shijiazhuang City will build the world’s biggest replacing-copper-with-aluminum cable production base,the annual output value can reach 100 billion yuan,in the future it will develop replacing-copper-with-aluminum highend industry cluster.This piece of news was learned by the reporter at the Rare Earth highiron Aluminum Alloy[Nonferrous Business Opportunity:Aluminum alloy door]Cable Conductor New Technology Application Seminar held at the provincial capital. 相似文献
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《China Nonferrous Metals Monthly》2014,(12)
正Since the beginning of Chongqing’s upgrading to a municipality directly under the Central Government,Chongqing City has established direct friendly relationship with Almaty,Kazakhstan,and carried out a series of cooperation in commerce and trade,and culture 相似文献
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《China Nonferrous Metals Monthly》2014,(10)
正"For each tonne of aluminum being produced,the upstream enterprise on the aluminum industrial chain will suffer loss about 2000yuan."Said Liang Xiao,Deputy Director of Pingguo Industrial Park Management Committee under the Guangxi Baise City,one of the four major aluminum industry bases in China,on August 11.Extending aluminum 相似文献
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正Immediately after the news that Chinalco transferred 58%stock equity of Yunnan Copper Group to its wholly-owned subsidiary China Copper Corporation Limited free of charge was disclosed on July 9,many individual investors couldn’t help but to think:Does it mean China Copper Corporation Limited will assemble assets for overall listing?At present,among main copper business companies under China Copper Corporation 相似文献
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正At the press conference recently held by the National Development and Reform Commission under the theme"Deepen Reform in Investment AuditApproval System",when answering questions from reporters,Huang Min,Director of the Department of Fixed Assets Investment of the National Development and Reform Commission,said that in the future it would continue to intensify efforts in geological prospecting,and actively guide social capital to enter this field. 相似文献
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正Recently,Guangxi Metallurgical Research Institute,a subsidiary of Guangxi Nonferrous Metals Group,completed survey on laterite and related manufacturers in the region,by combining the current development status of laterite both at home and abroad,it compiled Guangxi’s first"Research Report on the Development of Guangxi Nickel Industrial Chain"which adopted laterite as the study subject.This report expounded on the current 相似文献
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