洁净钢生产技术探讨

概述了洁净钢的生产技术,讨论了在炼钢-精炼-连铸过程中控制夹杂物的主要技术措施,为洁净钢的生产提供参考。     

洁净钢生产工艺调研

主要论述了洁净钢与其性能之间的关系，同时较为详细的介绍了国内外生产洁净钢控制钢中杂质元素[C、S、P、N、H、O]的技术，为重钢生产洁净钢提供有益的借鉴。     

珠钢洁净钢生产

综述了珠钢洁净生产所采取的系统控制与主要技术措施：优化配料技术、全程泡沫渣操作终点控制、脱氯制度、吹氩制度、精炼碱性白渣操作、钙处理、弱搅拌、保护浇注以及合适的保护渣等．旨在不断提高钢水洁净度。     

洁净钢生产技术

阐述了洁净钢生产的技术思路以及各工工序中采用的主要工艺技术。     

转炉洁净钢的生产

转炉洁净钢的生产随着国民经济的发展及北部边区的深入开发，对钢材的质量及其品种的增加和趋向复杂化提出了更高的要求。因此，必须开发出新的生产工艺，生产出新型的优质洁净钢。根据中央黑色冶金科研院确定的钢的洁净度和鉴定钢的使用性能的基本条件。除了杂质、非金属...     

洁净钢生产的连铸工艺实践

介绍了本钢炼钢厂在生产洁净钢过程中为防止连铸时增碳、增氮及减少钢中非金属夹杂物而对连铸工艺进行的改进以及在生产实践中取得的效果.     

Midrex直接还原技术—直接生产洁净钢的工艺

电弧炉炼钢使用直接还原铁（ＤＲＩ）作为原料，能够生产出优质线棒材、管材和扁平村。直接还原铁作为炉料具有残余元素含量低、有助于产生ＣＯ和形成泡沫渣等特点，所生产的钢在屈服强度、延伸率和应变时效等机械性能指标方面达到优良，此外，还能改善炉子操作。     

IF钢洁净化生产工艺分析与实践

以鞍钢股份有限公司炼钢总厂四工区"铁水喷吹法脱硫→260 t顶底复吹转炉冶炼→挡渣出钢→RH-TB真空精炼→中厚板坯连铸"生产IF钢的工艺路线为研究对象,着重讨论了转炉冶炼、RH真空精炼和连铸3个关键工艺环节,从钢水T.O含量控制、RH升温控制、保护浇铸和浇铸过程稳定性控制等方面分析和提出了提高IF钢洁净度的措施,在改进IF钢洁净度、降低钢中夹杂物含量、提高成材率方面取得了良好的效果。     

Process Analysis and Practice of Clean IF Steel Production

Based on the current process and equipment conditions of No.3 steelmaking and continuous rolling plant, which consists of desulphurization and slag skimming of hot metal, 260t combined blown BOF, rimmed steel tapping with slag stopping process, RH-TB vacuum treatment process and medium thin slab continuous casting, the methods for improving cleanliness of IF steel in BOF smelting, RH vacuum treatment and continuous casting were investigated. According to results of theoretical analysis and experiments, a series of quality controlling schemes were proposed for improving cleanliness of IF steel via controlling chemical composition, T[O] content, tapping temperature, shrouded casting and controlling stability of continuous casting.     

Construction of High-Efficiency and Low-Cost Clean Steel Production System in Shougang Jingtang

This paper analyzes the technology for clean steel production in modern iron and steel plant,a philosophy with production efficiency,manufacturing cost and product performance in its core.It also makes a review on functions of high-efficiency,low-cost and high-quality steel products manufactured by the new generation iron and steel plant,in combination with the study on design of steelmaking-continuous casting process of Shougang Jingtang iron and steel Plant.By applying precise and dynamic design system to optimize and allocate systems and working procedures of hot metal pretreatment,converter smelting,secondary refining,continuous casting process,etc,a platform of high-efficiency,low-cost and high-quality clean steel production is built.     

钢的洁净度控制及生产新技术

论述了钢的洁净度对钢材性能的影响,介绍了洁净钢生产中S、P、N、O和非金属夹杂物的控制技术,分析总结了洁净钢生产的新技术,并展望了洁净钢生产技术的发展前景。     

不同工艺路线超低碳钢洁净度分析

针对厚板坯和中薄板坯连铸两条工艺路线生产的超低碳钢,采用相关手段分析了钢水从钢包到中间包的二次氧化、稳态和非稳态铸坯全氧、总体夹杂物水平、铸坯大颗粒夹杂物比例等。结果表明,两种工艺路线生产的超低碳钢在稳态浇注时铸坯洁净度基本一致;非稳态浇注时中薄板生产线钢水洁净度低于厚板坯连铸;受中薄板连铸结晶器和水口形状的制约,其水口结瘤现象较厚板坯连铸严重得多。作为中薄板连铸向薄板坯连铸的过渡,若在薄板坯连铸生产线实现正常浇注超低碳钢,进一步提高钢水洁净度、设计合理的浸入水口结构、稳定的连铸操作是亟待解决的问题。     

Low-Cost and Large-Scale Clean Steel Production Technology

As the market demand for clean steel increased,a number of new technologies for clean steel production have been developed in some domestic and foreign steelmaking plants.Based on the existing equipments and technical conditions in the No.1 steelmaking plant of Ansteel,a series of clean steel technologies have been integrated including single bay duplex-dephosphorization in steelmaking control technology,high efficiency desulfurization technology,the control technology for nitrogen content during the whole process,the control technology for hydrogen content in VD,and the systematic control technology for oxygen content.A series of process for all kinds of ultra-low phosphorus,ultra-low sulfur and relative low level of inclusions have been designed in clean steel production.This process include hot metal desulfurization and slag-off,single bay duplex-dephosphorization in BOF,molten steel slag-off,LF processing,VD processing,and continuous casting with protection,then a stable,low-cost and large-scale production process has been formed.Applying this integrative technology,the sum of 5 major elements including phosphorus,sulfur,oxygen,nitrogen,hydrogen is less than 80×10-6 in high alloy steel scale production,and the industrial applications for clean steel technology have been achieved.     

高碳纯净钢生产工艺的研究与实践

鞍钢股份有限公司第一炼钢厂试验研究了高碳纯净钢的冶炼操作技术,对纯净钢的工艺过程控制进行全面分析后,确定了高碳纯净钢的冶炼技术要点。将采用该工艺生产的高碳纯净钢与其他钢厂同类钢种进行对比,结果表明,该工艺提高了高碳钢的纯净度和性能指标。     

国内外纯净钢生产技术的新进展

概述了国内外先进炼钢厂的纯净钢生产技术，讨论了铁水预处理、冶炼、精炼及连铸各工序控制钢中夹杂物C、S、P、N、H、T.O的主要技术措施，为纯净钢生产的工艺选择和成分控制提供参考。     

论纯净钢及其生产技术

详细介绍了纯净钢的生产技术:去碳、去硫、去磷、去氮、去氢、去氧及夹杂物的控制,最后阐述我国纯净钢的生产现状及趋势.     

洁净钢的生产实践

介绍了近年来武钢第三炼钢厂在纯净钢冶炼工艺和生产方面所做的工作。描述了在钢中碳、氮、氢、硫和总氧的控制和夹杂物的变性处理上采取的措施、目前达到的水平，以及这些措施在ＩＦ钢和石油管线钢上的应用效果。     

弹簧钢洁净化生产工艺研究

采用系统取样,结合金相观测、全氧分析、大样电解、电子探针和稀土氧化物示踪等手段,对八钢电炉厂电弧炉-LF-小方坯连铸生产60Si2Mn的洁净度进行了系统研究,精炼后钢液w(TO)为95×10-6,中间包内w(TO)为94×10-6,铸坯中w(TO)为54×10-6.了解了各阶段夹杂物数量、尺寸分布和类型,找出了大型夹杂物的来源.根据影响钢质量的主要因素,提出了有针对性的改进方案,优化设置了控流装置.改进后,钢中有害夹杂物数量大大减少,质量明显提高,铸坯w(TO)由54×10-6下降到28×10-6.