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《金属材料与冶金工程》1998,(4)
这是一项由日本三菱铝业公司研究发明的专利技术,该铝合金管系以铝为基的带材卷制而成。这种铝合金的成分为,%:Mn0.5~1.5,Si0.3~1.3,0.1<C≥0.01,Zr0.05~0.25,Cr0.05~0.25,Ti0.1~0.25和Mg0.05~0.2。铝管的内表面涂覆有一层厚0.005~0.05mm.的AI—Zn合金(含Zn0.3%~2%)或AI—Sn合金(含Sn0.05%~0.2%)。卷制好的铝合金毛管在AI—St合金钎焊液中钎焊,钎焊时控制好钎焊温度。这种铝合金管的耐腐蚀性极佳。热交换器用高强度铝合金管… 相似文献
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在55~75kg实验钢包炉精炼渣系的研究基础上,采用组成(%)为:63.6~70.0石灰,22.7725.0高铝矾土,5.0~13.6萤石(S1渣);60.0~66.7石灰,20.8~25.0萤石,12.5~15.0火砖块(S2渣);55.5~65.0石灰,35.0~44.5萤石(S3渣)3种渣系进行60t LF精炼渣埋弧工业试验,所精炼的钢种为20,20G,40Cr,35-CrMoA和GCr15。结果表明,用3种渣系钢水平均脱硫率均为87%,LF在采用S1、S2、S3渣系精炼时钢水平均升温速度分别为3.84℃/min、2.86℃/min和2.48℃/min。S1渣的脱硫速度快,从而缩短了精炼时间。 相似文献
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北方重工业集团50t偏心炉底出钢超高功率电弧炉冶炼周期为2h,采用氧化铁皮作为氧化剂,炉料中配入20%以上生铁,控制炉渣碱度2~3.5,渣中FeO含量为15%~25%,渣量3.0t。使用泡沫渣埋弧操作后,钢液的升温速度由原来的3.5℃/min提高到7.5℃/min,45钢出钢[S]为0.012%~0.020%,[P]0.005%~0.007%,电弧炉的炉龄由原来的50炉提高到150炉。 相似文献
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研制了基板-10mm厚成分(%)为0.15~0.20C,0.8~1.5Mn的16Mn钢板与复板-成分(%)为0.6~1.0C,0.5~1.0Si,0.8~1.2Mn,0,5~1.5Cr,0.4~0.6Ni,0.4~0.8Mo,0.005~0.015B,0.05~0.10Y,0.08~0.15K,0.08~0.15Na的耐磨钢板经爆炸焊接工艺制成钢管热连轧机架耐磨复合衬板。复合衬板试验和应用结果表明,钢板复层表面硬度HRC60,结合层剪切强度340MPa,使用8月个后的磨损量小于0.2mm,比常用表面处理衬板和轧制复合衬板磨损量低2倍以上。 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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