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我国双辊薄带连铸技术的开发与展望 总被引:1,自引:0,他引:1
介绍了目前我国双辊薄带连铸技术研究开发以及向工业化方向发展状况,论述了该技术在我国钢铁工业中的应用前景;还分析了在向工业规模化生产 中必须解决的一些问题,探索了解决这些问题的方法,并且对双辊薄带连铸技术在我国的开发和推广应用前景进行了展望。 相似文献
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硅钢是双辊薄带连铸工艺最具开发潜力的钢种之一。综述了国内外双辊薄带连铸工艺生产硅钢技术的现状,并讨论了该工艺的技术要点、难点以及研究和发展的方向。 相似文献
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介绍了双辊薄带连铸机在4家企业的安装、调试、生产情况,研究了试生产中的关键技术及影响产品质量的工艺设备等因素,对不锈钢连铸带坯进行冷轧及制成产品的过程进行了探索. 相似文献
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硅钢是双辊薄带连铸工艺最有开发潜力的钢种之一,本文综合评述了国内外双辊薄带连铸工艺生产硅钢的研究现状,讨论了该工艺的技术要点和难点,并指出了其研究和发展方向。 相似文献
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双辊薄带连铸装置产业化技术经济系统评价 总被引:2,自引:0,他引:2
通过对10吨级双辊浅薄带连铸机组投入产出的估算,结合某钢铁企业传统工艺生产带坯的成本核算比较,从经济效益和社会效益两方面评价了双辊薄带连铸技术在“九五”期间实现产业化的重要意义。 相似文献
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不锈钢是双辊薄带连铸工艺重点开发的钢种之一.综述了不锈钢的分类和性能特点,简要介绍了不锈钢的几种生产型式,详细讨论了双辊薄带连铸生产不锈钢的技术要点和难点. 相似文献
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双辊薄带连铸生产薄带钢技术具有节能环保、工艺流程短等优点.对已公开的薄带连铸熔池密闭室工作方法及结构形式进行了分析,并按照功能和结构将熔池密闭室分为:可分段控制铸辊冷却强度的熔池密闭室装置、多气体腔室的熔池密闭室装置、采用混合气体影响熔池传热的熔池密闭装置以及能主动去除熔池表面浮渣的熔池密闭室装置等,最后总结了一套密闭室的设计思路. 相似文献
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《Baosteel Technical Research》2010,(Z1):91
The dynamic and static recrystallization behaviors of twin roll cast low carbon steel strip were investigated with an attempt to provide guiding deformation parameters for the on line hot rolling.In order to investigate dynamic recrystallization behavior,as cast strip was reheated and soaked with austenite grain size similar to the width level of the as cast columnar structure.Tensile test was used and the deformation temperature is in the range of 900℃to 1 100℃and strain rates are 0.01 s-1,0.1 s-1,1 s-1.The activation energy and stress exponent were determined as 306kJ/mol and 4.69 respectively.The ratio of critical strain to the peak strain is 0.65,and that of critical stress to the peak stress is 0.92.The dependence of the peak strain on the initial grain size and Zener - Hollomon parameters Z isεp =9.1×10-4×D00.48Z0.13.The kinetics of the dynamic recrystallization and recrystallized grain size was predicted using models published.The as cast coarse austenite were dramatically refined after complete dynamic recrystallization.For static recrystallization,the tensile test was carried out on Gleeble -3500 thermo - mechanical simulator.The deformation temperature is in the range of 800℃to 1 200℃with strain rate 0.01 s-1 to 1s-1.The pre strain is fixed at 0.04 to 0.12 and the inter-hit delay time varies from 1 s to 3 000 s.The activation energy and Avrami exponent of static recrystallization were determined as 241 kJ/mol and 0.54 respectively.A kinetics model was proposed to describe the static recrystallization kinetics.The predicted results were in good agreement with the experimental results. 相似文献
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利用非线性热力耦合有限元方法,对浇铸过程中结晶辊辊套的温度场分布进行了研究,并同时计算出了结晶辊的热变形.给出了浇铸稳定阶段的结晶辊温度场分布和热变形规律;分析了浇铸速度对结晶辊温度场和热变形的影响.通过分析得出,在浇铸稳定阶段结晶辊温度只在表层区域发生周期性变化,内部保持基本稳定,浇铸速度越低,周期性变化幅度越大. 相似文献
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对CSP连铸连轧工艺生产SPA-H热轧带钢进行试验,研究了夹杂物对产品性能的影响,探讨了减少钢中夹杂物、提高产品质量的工艺. 相似文献
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对中冶连铸公司(CCTEC)总承包的1台4流合金钢圆坯连铸机作了简要介绍,并着重介绍了圆坯连铸机的设计特点及在生产实践中得到的一些体会。生产20号钢,断面为Ф210mm,拉速控制在1.5~1.8m/min,中包钢水过热度控制在20~30℃,二冷比水量为0.4~0.5L/kg,生产的铸坯满足国标要求,可推广应用于相类似圆坯连铸机的设计。 相似文献
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《钢铁冶炼》2013,40(8):614-621
AbstractThe fluid transport characteristics and level fluctuations in the pool of twin roll strip casting were studied by physical simulation. The level profile depends on the transport characteristics of the flow in the pool. A 1∶1 water model of a twin roll strip caster was constructed based on the Froude number and Reynolds number similarity criteria to address the relationship between fluid flow and level fluctuations in the pool. The residence time of fluid in the pool and the nip points of the caster were measured to evaluate the uniformity in the caster in different operating conditions, and the level fluctuations and residence time were measured by wave gauge sensors and conductivity sensors respectively. The results show that free surface oscillations increase with the flowrate changing from 8·7 to 14·5 m3 h?1. Suitable outlet extension and outlet angle as well as holes in the bottom of the nozzle were beneficial to obtain a uniform distribution of the fluid along the direction of roll width at the pool zone. 相似文献