薄板坯连铸连轧工艺技术发展的概况

薄板坯连铸连轧工艺问世１０年来发展迅速，ＣＳＰ、ＩＳＰ、ＦＩＳＲ为代表的各种工艺技术的发展各具特色。总的发展趋势是，提高铸机生产能力充分发挥后部连轧机的生产能力；改进品种质量，提高产品的市场覆盖率，采用无头轧制工艺、生产超薄规格产品，以取代部分冷轧产品的市场；应用范围扩大，越来越多的在以高炉铁水为原料的大型联合企业中得到应用，为该工艺的发展开拓了更广阔的前景。     

用化学复合镀工艺制备的Ni—P—SiC镀层材料的组织,热处理和性能

使用化学复合镀工艺获得了Ｎｉ－Ｐ－ＳｉＣ金属陶瓷镀层材料，镀层中ＳｉＣ质点分布均匀，利用差热分析曲线讨论了可获得的好耐磨性能热处理制度，比较了Ｎｉ－Ｐ－ＳｉＣ和Ｎｉ－Ｐ镀层的硬度和耐磨性能。     

CSP技术的现状,能力和进一步的开发

采用ＣＳＰ技术生产的钢种范围在不断扩大。ＣＳＰ工艺能生产可焊接非合金钢，中碳钢，低碳钢，冷轧用的高强度微合金钢和含磷的合金钢。对微合金化的低合金高强度钢，硅钢，热处理用的合金钢，铁素体和奥氏体不锈钢以及高碳钢已做了试生产。本文还介绍了机械性能和显微照片，浸入式水口的几何形状结晶器中的钢流，电磁制动，液芯压下，结晶器液压振动，炉中的辊道，高压水除磷，轧机前的轧边机，轧机对钢板轮廓外形和平直度控制系统     

纽柯公司希克曼厂CSP设备的生产能力及其扩建

８０年代末ＣＳＰ工艺为热带钢生产带来了显著的进步，５０ｍｍ厚薄板坯连铸为扁钢进入小型钢厂辅平了道路。本文将介绍纽柯公司希克曼厂第二套ＣＳＰ设备的生产能力。     

薄板坯连铸机与连轧机的连接

薄板坯连铸连轧的关键技术之一是连铸机与连轧机的连接。连接工艺的合理与否、可靠与否直接关系到薄板坯连铸连轧技术的成败，本文分析比较了ＣＳＰ技术和ＩＳＰ技术对连接工艺的设想，并在此基础上提出了连接工艺新方案，该方案把ＩＳＰ与ＣＳＰ的优点结合起来，不仅缩短了流程的长度且生产组织灵活方便，设备简单，投资省。     

薄板坯连铸技术特点与发展（一）

本文简述了薄板坯连铸技术的发展，并介绍ＣＳＰ、ＩＳＰ、ＦＴＳＣ、ＴＳＰ、ＣＰＲ的工艺特点。     

薄板坯连铸连轧工艺技术浅析

薄板坯连铸连轧技术是９０年代初开发起来的一项新技术。，因其建设投资少，生产周期短和效率高等而代表着当今世界板带连铸技术的发展方向。目前世界上比较成熟目前代表性的薄板坯连铸连轧技术有；ＣＳＰ工艺，ＩＳＰ工艺，Ｃｏｎｒｏｌｌ工艺，ＵＴＨＳ工艺。文中对上述四种工艺作了介绍，可对鞍钢今后引进该技术起参考作用。     

形变热处理工艺改善马氏体不锈钢材质的控制技术

日本大同特殊钢公司等单位合作在锻造时采取形变热处理工艺生产锻材,降低变形抗力细化晶粒并提高其韧性,实现了大批量生产备件。试验材成分(%)0.06Ｃ0.26Ｓｉ0.02Ｍｎ0.02Ｐ0.01Ｓ3.35Ｃｕ4.08Ｎｉ15.83Ｃｒ0.34Ｎｂ0.03Ｎ,试验加热温度1040℃,保温后冷却至800℃进行锻造,经1040℃×1ｈ固溶化处理后切取Φ15ｍｍ×Ｌ22.5ｍｍ试样,机械加工硬度ＨＶ353。对试样压缩变形,观察有无裂纹并计算变形抗力,同时与原来工艺作比较。ＳＵＳ630钢锻造形变热处理试样在200～400℃的变形抗力为500～580ＭＰａ,比原锻造工艺有明显降低。2种形变热处理工艺改…     

CSP项目最新建设情况

ＣＳＰ项目最新建设情况１９８６年德国西马克公司与美国纽柯钢铁公司签订ＣＳＰ薄板连铸技术的工业化合同，１９８９年６月，世界上第一条生产热轧板卷ＣＳＰ生产线诞生了。下一世纪ＣＳＰ可能是生产冷轧卷和热轧卷的主要技术。ＣＳＰ工厂将来的热轧卷生产能力可高达３３...     

CSP—不断发展的铸机和轧机的紧凑连接

随着薄板坯连铸技术的推广，１９８９年在纽柯的克劳福兹维尔板厂采用ＳＭＳ公司ＣＳＰ工艺首次实现铸机和热带钢轧机的连接。目前，已建立了８００万ｔ生产能力的ＣＳＰ厂，共有７００万吨生产能力ＣＳＰ厂建设订单。     

转炉-薄板坯流程的产品开发与工艺优化

介绍了薄板坯连铸连轧技术的发展、冶金特点与钢水质量控制、品种开发、生产工艺优化。薄板坯连铸连轧的产品特点是晶粒细小、强度高、钢质纯净、性能均匀,适宜生产各种高强度钢板。应根据薄板坯连铸连轧生产钢种的不同要求,对转炉一薄板连铸连轧生产工艺流程进行合理的优化,提高产品质量,扩大生产品种。研究开发和推广应用复吹转炉高效冶炼技术、薄板坯连铸机高拉速技术与铁素体区润滑轧制技术,大量生产薄规格品种,实现以热代冷是今后薄板坯品种开发和工艺优化的核心技术。     

Microstructure homogenization control of Nb-bearing X65 pipeline steel by the CSP process

In order to get the controlled methods of microstrueture homogenization and high strengthening-toughening combination by compact strip production (CSP) rolling,the dynamic recrystaUization characteristics of each pass were obtained during CSP rolling using a Gleeble-1500 thermal mechanical simulator.Then,the CSP process was simulated by laboratory rolling experiment.Through thermal mechanical simulation experiment and laboratory rolling experiment,a design idea of Nb-bearing pipeline steel by CSP can be obtained as the following:the level of dynamic recrystaUization behavior should be increased through the reasonable balance of high deformation temperature and deformation amount in F1 and F2 passes,and F3-F7 passes should be controlled in the austenite non-recrystallization zone.Finally,X65 pipeline steel with microstrueture uniformity and good properties was produced by CSP.The yield strength is up to 497 MPa,the tensile strength is up to 563 MPa,the elongation is 30% on average,and the toughness is very good whose Charpy impact value is 110 J on average and drop-weight tear test shearing areas are all 100% at -60,-40,-20,0,and 20℃.     

HSLA钢冶金工艺技术的进展

20世纪90年代以来,薄板坯连铸连轧技术及中厚板坯炉卷轧制工艺,进入了低合金高强度钢(HSLA)的生产流程;并在该流程中对HSLA钢热机械控制轧制工艺(TMCP)取得了不少有益的经验。目前薄板坯连铸连轧CSP(Compact Strip Production)工艺所开发的钢种有:(1)ECC、UCC和IF软钢;(2)高强度多相DP和TRIP钢;(3)X80级管线钢。介绍了薄板坯连铸连轧和中厚板坯炉卷轧制工艺开发的HSLA钢品种的工艺特点和工艺优化。     

在CSP线生产550MPa以上V微合金化HSLA钢的试验研究

为在CSP线利用V微合金化加控制轧制生产550MPa以上高强度HSLA钢，通过试验钢的成分设计、模拟CSP连铸、试验轧制和Gleeble试验，初步确定了该产品在CSP线的生产工艺，为下一步深入研究CSP线的V微合金化行为奠定了基础。     

酒钢CSP流程管线钢X60板卷生产实践

酒钢在CSP流程研制开发的管线钢X60热轧板卷采用纯净钢冶炼、Nb V复合微合金化技术,优质铸坯浇注控制和热机械轧制工艺,开发的产品表面氧化铁皮少,强度高、韧性好、组织合格、焊接性能优良,完全满足用户使用要求。     

降低武钢CSP低碳酸洗钢SAPH370屈强比的实践

屈强比偏高是CSP低碳产品的共性问题。为降低CSP低碳酸洗钢SAPH370的屈强比,采取了不同轧制工艺(终轧温度FT7、卷取温度CT和冷却方式)进行试验,对不同工艺下的低碳酸洗钢的力学性能、晶粒尺寸和相组成进行了对比分析。结果表明:SAPH370钢采用终轧温度(FT7)为860℃、卷取温度(CT)600℃、后段快速冷却的工艺,在满足强度要求的前提下,屈强比可降低到0.8以下。观察到铁素体晶粒粗化、珠光体弥散分布。分析表明:CSP采用后段快冷工艺与传统热连轧的两段冷却工艺相当,有利于获得合适的铁素体晶粒度和弥散分布的珠光体。     

CSP工艺生产高牌号无取向电工钢的组织和夹杂物

 首次实现了从冶炼→CSP→常化→冷轧退火→成品检测等CSP工艺生产高牌号无取向电工钢的实验室全工序过程模拟,并对铸坯、热轧板及冷轧板中的组织及夹杂物进行了具体分析。结果表明,CSP工艺生产高牌号无取向电工钢是可行的;成品磁性能满足国际标准要求;薄铸坯、热轧板、成品板组织具有典型高牌号无取向电工钢组织特点;过程析出物主要为：AlN,AlN+MnS。     

CSP 冷轧DQ级钢工艺优化

 通过炼钢 CSP 冷轧DQ级钢小批量的工业试验,研究了各工序工艺参数对DQ级钢力学性能的影响。研究结果表明,CSP 冷轧DQ级钢生产可采用与常规热轧相似的化学成分;CSP采用“二高一低”工艺能有效减少氮化铝的析出;增加冷轧压下率、降低退火加热速度、减少平整伸长率,DQ级钢力学性能显著提高。研究成果运用于实际生产中,涟钢DQ级产品广泛进入了车辆冲压板市场。     

Mathematical Modelling on the Microstructure Evolution of X60 Line Pipe Steel during CSP Hot Rolling

 An integrated process modelling system for simulating the microstructure evolution of Nb-microalloyed HSLA steel produced in CSP hot rolling process has been developed on the basis of the microstructure simulation and mechanical properties prediction technology. Thermo-mechanical coupled finite element models for simulating hot strip rolling have been developed and the distribution of equivalent plastic strain through the thickness direction in the rolled material of CSP rolling was carried out. Thus the distribution of temperature, strain and strain rate through the thickness of the steel stocks, as well as the microstructure evolution during hot rolling of X60 line pipe steel strip have been investigated by using the developed integrated process modelling system. In addition the determination and optimization of controllable process parameters during CSP hot strip rolling for the Nb-microalloyed X60 line pipe steel have been implemented, and control strategies such as adopting larger pass reduction in the first stand, and arranging appropriate pass interval times and proper rolling speed, to reduce or eliminate mixed-grains microstructure of Nb microalloyed strip in CSP processing have been proposed.     

Mathematical Model of Microstructure Evolution of X60 Line Pipe Steel During CSP Hot Rolling

An integrated process modelling system for simulating the microstructure evolution of Nb-microalloyed HSLA steel produced in CSP hot rolling process has been developed on the basis of the microstructure simulation and mechanical properties prediction technology. 3-D thermomechanical coupled finite element models for simulating hot strip rolling have been developed and the distribution of equivalent plastic strain through the thickness direction of the rolled material by CSP roiling was obtained. Thus the distribution of temperature, strain and strain rate through the thickness of the steel stocks, as well as the microstructure evolution during hot rolling of X60 line pipe steel strip has been investigated by using the developed integrated process modelling system. In addition, the determination and op-timization of controllable process parameters during CSP hot strip rolling for the Nb-microalloyed X60 line pipe steel have been implemented, and control strategies such as adopting larger pass reduction in the first stand, arranging ap-propriate pass interval times and proper rolling speed, to reduce or eliminate mixed grain microstructure of Nb micro-alloyed strip in CSP processing have been proposed.