检索结果-南通市图书馆

Lab experiments on the innovative rapid thick strip casting process

International Journal of Minerals,Metallurgy and Materials 2012年第5期19卷 391-398页

作者： Richard Nagy dieter senk Department of Ferrous Metallurgy IEHK RWTH Aachen UniversityAachen 52056Germany

Rapid thick strip casting （RTSC） by Anton Hulek, Inventmetall, is an innovative concept for the production of hot strips with a final as-cast thickness of about 25 mm before rolling. The innovation of the mechanism consists in a vertical mould performing a caterpillar motion. This moving mould has an unconventional parallelogram-shaped cross-section. The conventional rectangular shape is formed in the shaping machine, which is placed straight below the mould. Further elements of the technology are state-of-the-art. For the investigation of this new casting system theoretical calculations were complemented with practical experiments. The investigation focused mainly on two key aspects： the characteristics of the mould and the shaping process. For the practical analysis a static mould with three pairs of elements in laboratory scale was developed and commissioned by the Dept. of Ferrous Metallurgy @ RWTH Aachen University. The shaping experiments were carried out in model scale with two different materials and in variable boundary conditions. The results of these experiments delivered important mechanical as well as thermal informations about the casting system.

关键词： continuous casting rapid solidification strip metal moulds near-net-shape casting

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Unconventional Raw Materials for Ironmaking

Unconventional Raw Materials for Ironmaking

引用

第十届中国钢铁年会暨第六届宝钢学术年会

作者： Babich Alexander senk dieter Dept.of Ferrous Metallurgy （IEHK） RWTH Aachen University

Keynote deals with use of biomass and waste plastics by means of injection and embedding in pellets, composites, coke and sinter, with re-use of top gas and COG, with efficiency of nut coke in the BF, coal briquettes in Corex, mini-pellets in sintering and, finally, with use of DRI/LRI in the BF. All these topics are discussed considering our research results at IEHK/RWTH Aachen University.

关键词： biomass waste plastics off gas nut coke and coal briquettes DRI / LRI

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

New Ionmaking Technology and Evironmental Potection（IEHK）

New Ionmaking Technology and Evironmental Potection（IEHK）

引用

第八届（2011）中国钢铁年会

作者： Gudenau HeinrichWilhelm senk dieter Babich Alexander Department of Ferrous Metallurgy RWTH Aachen University

After the new Campus-parts of the RWTH Aachen University, the IEHK（Institute of Ferrous Metallurgy）, its labs, facilities and researchers are shown. The research and development including the measurement possibilities of the No-Bell-Charging System for blast furnaces is presented. Experiments at the injection-rig to inject materials into the blast furnace by different researchers are discussed. Furthermore in the pilot plant Kobesi II the influence by pulsated injection are measured e.g. by CARS（Coherent Anti-Stoke Raman Spectroscopy）. To produce reduction gases e.g. out of different coals, plastics or biomasses the HTW（High Temperature Winkler） was modified, results are given. The Circored and Cirofer processes were studied to produce DIR（direct reduced iron） and LRI（low reduced iron） to use these materials in different processes. At IEHK in the framework "Steel- Ab Initio" the system Fe-Mn-C is under investigation by first principles of physics and chemistry. 23 partners e.g. IEHK and MPIE（Max Planck Institute for Iron Research） are cooperating to study the behaviour of steel by using different chemical compositions;results and tendencies will be discussed. For the Oxi-Cup carbon containing filter-dust-briquettes were studied since 1995 with focus on their reduction and melting behaviour;interesting is that similar to pure iron oxide agglomerates these dust-briquettes often show firstly a reduction with an iron layer on the outside and the melting follows in the inner column. The injection of further waste was studied. The dioxine research brought beside a lot of fundamentals the result that at the sinter plant dioxine leaves the strand in the last wind boxes;this was used in different industrial plants. Particulate matter emission can be divided into inhalable, thoraric and respirable. To remove these particles with a diameter ＜ 10 μm the off-gas is treated with sticking agents to form agglomerates which can be removed from the gas stream. As an example of CO2-sa

关键词： ironmaking BF injection gasification fluidized bed reduction filter dust briquettes and nute coke

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

New Ionmaking Technology and Evironmental Potection(IEHK)

New Ionmaking Technology and Evironmental Potection(IEHK)

引用

第八届（2011）中国钢铁年会

作者： Gudenau Heinrich-Wilhelm senk dieter Babich Alexander Department of Ferrous Metallurgy RWTH Aachen UniversityAachenGermany

After the new Campus-parts of the RWTH Aachen University,the IEHK(Institute of Ferrous Metallurgy),its labs,facilities and researchers are *** research and development including the measurement possibilities of the No-Bell-Charging System for blast furnaces is *** at the injection-rig to inject materials into the blast furnace by different researchers are *** in the pilot plant KobesiⅡthe influence by pulsated injection are measured *** CARS(Coherent Anti-Stoke Raman Spectroscopy).To produce reduction gases *** of different coals,plastics or biomasses the HTW(High Temperature Winkler) was modified,results are *** Circored and Cirofer processes were studied to produce DIR(direct reduced iron) and LR1(low reduced iron) to use these materials in different *** IEHK in the framework"Steel- Ab Initio"the system Fe-Mn-C is under investigation by first principles of physics and chemistry.23 partners *** and MPIE(Max Planck Institute for Iron Research) are cooperating to study the behaviour of steel by using different chemical compositions;results and tendencies will be *** the Oxi-Cup carbon containing filter-dust-briquettes were studied since 1995 with focus on their reduction and melting behaviour;interesting is that similar to pure iron oxide agglomerates these dust-briquettes often show firstly a reduction with an iron layer on the outside and the melting follows in the inner *** injection of further waste was *** dioxine research brought beside a lot of fundamentals the result that at the sinter plant dioxine leaves the strand in the last wind boxes;this was used in different industrial *** matter emission can be divided into inhalable, thoraric and *** remove these particles with a diameter<10μm the off-gas is treated with sticking agents to form agglomerates which can be removed from the gas *** an example of CO-saving nut-coke in pellet- or si

关键词： ironmaking BF injection gasification fluidized bed reduction filter dust briquettes and nute coke

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

连铸结晶器内板坯传热凝固行为建模和模拟

引用

连铸 2019年第4期44卷 68-74页

作者：杨丽柴锋罗小兵苏航 Erwin Wosch dieter senk 钢铁研究总院工程用钢研究所北京100081 德国亚琛工业大学钢铁冶金所亚琛52072

对1510 mm×250 mm板坯在连铸结晶器内的传热行为进行了建模和计算,利用结晶器、保护渣和凝固坯壳之间不同传热层的热流密度相等的假定,通过热力耦合模型进行板坯和结晶器温度分布的计算。传热模拟结果与某钢厂连铸结晶器现场生产数据... 详细信息

对1510 mm×250 mm板坯在连铸结晶器内的传热行为进行了建模和计算,利用结晶器、保护渣和凝固坯壳之间不同传热层的热流密度相等的假定,通过热力耦合模型进行板坯和结晶器温度分布的计算。传热模拟结果与某钢厂连铸结晶器现场生产数据和热电偶测温数据进行对比,验证了该模型计算结果的可靠性。当浇注速度设定为1 m/min时,在结晶器出口位置,板坯宽面中心的凝固坯壳厚度达到了18.7 mm。提高连铸拉速,结晶器出口处的凝固坯壳厚度降低。此外,基于传热模型计算获得的板坯温度变化曲线,利用相场模型,模拟对比了不同碳含量的两种成分材料Fe-0.04C-1.36Mn和Fe-0.14C-1.36Mn在凝固过程中的组织演变情况。在相同的冷却条件下,Fe-0.04C-1.36Mn形成的凝固坯壳更致密,树枝晶间未转变的液相体积分数低。可以认为Fe-0.04C-1.36Mn形成的凝固坯壳质量更好,更容易避免在结晶器中产生漏钢以及表面裂纹。

关键词：结晶器传热热流密度凝固组织

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

高锰TWIP钢熔炼过程数学模型其验证

高锰TWIP钢熔炼过程数学模型其验证

引用

第十七届（2013年）全国冶金反应工程学学术会议

作者：陈建斌 dieter senk Alexander Lob 上海应用技术学院材料科学与工程学院德国亚琛工业大学钢铁冶金系(IEHK)

TWIP钢已成为高级汽车用钢的热点研究领域之一,其冶金原理、冶炼方法和工艺及冶金特点等方面均值得作深入的研究。本研究将高锰Fe—Mn.C熔炼过程中的多组分同时反应作为一综合的反应体系进行研究,考虑体系内各反应间的影响。根据冶金热... 详细信息

TWIP钢已成为高级汽车用钢的热点研究领域之一,其冶金原理、冶炼方法和工艺及冶金特点等方面均值得作深入的研究。本研究将高锰Fe—Mn.C熔炼过程中的多组分同时反应作为一综合的反应体系进行研究,考虑体系内各反应间的影响。根据冶金热力学和动力学原理建立Mn、C等组分的渣一金一气反应体系同时反应动力学模型,编制计算程序,得出成分对时间的变化曲线,并用两个实验进行了验证。结果表明:在高锰Fe—Mn—C体系熔炼过程中,锰的损失包括大气氧化和金属液中锰的蒸发损失,两种损失量各约占50%:锰和氮的计算结果与实验结果吻合较好;高碳时计算值与实验值吻合,但各炉次低碳时计算值均低于实验值,而不同炉次具体的临界值不同。

关键词： TWIP钢动力学模型同时反应多组分体系冶金过程

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Effect of Tempcore Processing on Mitigating Problems of Tramp Elements in Low C Steel Produced from Recycled Material

引用

Journal of Iron and Steel Research International 2015年第7期22卷 582-589页

作者： Ahmed RAMADAN A.Y.SHASH I.S.EL-MAHALLAWI D.senk Taha MATTAR Quality Department Faculty of Engineering Cairo University Institute of Ferrous Metallurgy RWTH-Aachen University Central Metallurgical Research and Development Institute

The effect of tramp elements in the steel was intensively studied. It was found that the solubility of tramp elements decreased as the temperature decreased under normal cooling conditions. The tramp elements （Cu, Pb, and Sn） diffused toward the grain boundaries, and intermetallic compounds or rich phases which have low melting points were formed, causing reduction in ductility and failure during the bending test. Rebars with Cu content which were left to air cooling after the last step showed drop in elongation, up to 32 %. On contrast, the samples with high per- centage of tramp elements （Cu, Pb, and Sn） in the billet, which were rolled and subjected to Tempcore process, did not show drop in elongation or failure in bending test （especially for rebar with diameter less than 32 mm）; however, copper must be less than 0.35 mass% to prevent the precipitation of Cu-rich zones of critical size in 32 mm. When quench- ing was applied, the tramp elements remained in the interstitial supersaturated solid solution positions inside the grains and would not have the chance to diffuse and form precipitates, hindering the copper precipitates from reac- hing the critical size necessary for impairing the properties. This would hinder the occurrence of the harmful effect of the tramp elements on the elongation or the hot shortness after rolling.

关键词： recycled steel hot shortness crack susceptibility Tempcore process tramp element residual melt

来源：

维普期刊数据库

同方期刊数据库评论