【摘 要】
:
In the last few years,Siemens VAI Metals Technologies ( Siemens VAI) has developed a specially designed combi-caster for long products,which offers the operator highest flexibility with respect to dif
【机 构】
:
Siemens VAI Metals Technologies GmbH,Linz,Austria
论文部分内容阅读
In the last few years,Siemens VAI Metals Technologies ( Siemens VAI) has developed a specially designed combi-caster for long products,which offers the operator highest flexibility with respect to different casting sections and steel grades.The operator can easily transform its casting machine in a couple of hours from a High Quality Billet/Bloom Caster with soft reduction technology and mold EMS to a Special Beam Blank Caster according to the changing market demands.With Siemens VAI it is possible to combine the production of billet,bloom and near-net-shape beam blank at one single casting machine.These special casters are equipped with the latest casting technologies like mold stirring and soft reduction functionality.Latest improvement of the internal quality was the implementation of dynamic soft reduction technology on long product casters.Siemens VAI runs the soft reduction technology in a fully dynamic mode and continuously uses all relevant casting parameters in its computer model during the casting process.An optimization for beam blank casting has been reached with latest developments in the equipment design and in the fine tuned mold tapers.Siemens VAI beam blank casters provide a wide operation window with respect to casting speed and steel grades including as well as the peritectic steel analysis.Near net shape beam blank casting is an excellent alternative to the more conventional bloom casting route for the production of H-beams and profile shapes.
其他文献
大型高炉(约5000 m3)热风炉经一代炉役运行后,炉壳某些区域大面积出现前所未见的裂纹等严重失效现象.为了确定这些裂纹是否可以修复、如何修复,以及修复后能否可以再用一代炉役,针对上述问题并结合高炉热风炉炉壳维护与焊接及长寿等关键技术进行了长达两年多的专题研究.聚焦高炉热风炉蓄热室(20.21 m处)炉壳区域的65条裂纹,扼要概述裂纹的形貌特征、分布规律和尺寸界定,其中最严重的裂纹尺寸长达395
The attempt to forecast the coming challenges for special melting technologies especially the ESR with liquid metal is presented.The overview on the development trends of ESR and related technologies
The demands made on hot-rolled materials have become considerably more stringent over the last few years.On the one hand,models are needed that can provide quantitative statements on the microstructur
现代化的生产运行保障技术服务体系需要基于物联网的综合诊断系统支持.这个体系从设备的状态检测着手,把设备控制精度的差异传递给状态把握和状态改善领域,然后延伸到一系列的专业化解决方案,最后使用户无忧,生产运行最优,其聚焦点就是钢铁业的综合诊断技术。从信息源角度考虑,传感技术是制约钢铁业综合诊断技术发展的瓶颈.因此必须建立一个包含识别技术、感知技术、传递技术和信号处理技术的诊断系统,通过异构系统间的数据
万能轧机轨梁生产线,在生产H200、H250、H300型钢时,时常出现万能轧机DX981257立辊轴承烧损的情况,此类事故给生产带来很大损失,报废的立辊及轴承、产生的废钢等增加了生产成本,降低了成材率。为解决轴承使用寿命问题,全面的分析和讨论了影响万能轧机DX981257立辊轴承寿命的工艺因素,制定了:优化万能轧制规程,控制立辊轧制负荷;改进轴承润滑方式;改进立辊及轴承冷却;改进立辊轴承防水密封等
The Corex process is beside the Finex technology the only economic and ecologic industrially realized alternative to the blast furnace route for the production of hot metal.Based on the nature of the
高炉一直向着大型化的趋势发展,炉顶压力、温度不断提高,同时伴随着各种强化冶炼手段的不断涌现,对高炉炉顶装料系统提出了更高、更严格的要求。近年来,中冶赛迪(CISDI)紧跟高炉大型化的发展趋势,开发出新一代大型高炉无料钟炉顶装备,并在炉顶布料均匀性及布料控制等方面进行深入研究,配套开发出炉顶布料偏析防治技术及炉顶布料模型技术,有效提升了炉顶布料效果,同时搭建了1∶1炉顶试验装置开展炉顶冷态、热态及布
通过分析各种传统铁水运输技术的优缺点,以巴西CSV钢铁厂为例,对传统铁路鱼雷罐车、“铁路一罐制”、铁水罐汽车运输平板车三种方式,从高炉接铁水一铁水输送一倒罐一铁水脱硫一向转炉兑铁水整个工艺过程,以及到铸铁机铸铁、罐的修理等环节,进行综合分析比较,得出了现代大型钢铁厂采用“铁路一罐制”技术运输铁水具有突出优势的结论。经过广泛深入的研究和探讨,确定的具体的工艺方案,并通过仿真模拟试验、现场模拟重载运行
通过对汽车用齿轮钢、轴承钢、弹簧钢等材料质量和性能的要求分析,结合国内外生产实际,通过国内某钢铁公司新建特殊钢、合金钢棒材工程,提出采用铁水预处理+转炉炼钢+钢水精炼+大方坯连铸的生产工艺,以及各工序的控制要求,预期效果,以进一步推广转炉工艺生产汽车和机械用特殊钢,以取得提高产品质量、降低生产成本的效果。
Thin slab casting and rolling process,that started as a process oriented to the production of hot rolled coils of commercial quality products with low transformation costs,progressively evolved reachi