共查询到20条相似文献,搜索用时 140 毫秒
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新钢公司三钢厂小方坯连铸机高效化改造的主要内容有结晶器,振动装置,拉矫机,二冷I段导向架,火焰切割机和供水系统等,通过改造,铸机拉速由1.2~2.0m/min提高到2.5~3.2m/min,产量提高2倍,铸坯质量改善,由此带来可观经济效益。 相似文献
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日本中山钢铁公司生产低碳和中碳钢中厚板和线材。该公司的2号单流板坯连铸机是1973年建造的,1997年1月中山钢铁公司为提高生产率、增加浇铸板坯宽度范围(将宽度增到1600mm)和提高板坯质量,与奥钢联工业设备公司(简称VAI公司)签订了该连铸机改造的合同。中山钢铁公司要求改造停产时间不得超过3周。2号连铸机原来的结晶器是弧形结晶器。VAI公司采用了新式强化型弧形结晶器。在弧形结晶器上安装了改进型电磁制动器。这种结晶器命名为FC结晶器(即流量控制结晶器),它可使结晶器内的钢水流速受到控制,从而促… 相似文献
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美国钢铁公司(USS)加里厂作为北美最大的钢铁联合厂,它的连铸及热带钢轧机生产为其取得成功起了关键的作用,1995年销售扁材产品达640万ton(Iton=1.01605t)连铸具有年产700万ton以上的能力,在北美也是最高的,1号连铸机,即美国1967年第一批安装的最现代化的连铸机之一,属于BOP炼钢车间,其余三台连铸机,妈2A,2B及2C连铸机,于1986年和1991年安装在Q-BOP炼钢2 相似文献
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H.S.Liu T.Fest D.Letzel J.Schoenbeck A.Zajber 《上海宝钢工程设计》2001,15(4):43-51
台湾烨联钢公司的现有小方坯连铸机改造成可生产小方坯和窄板坯的兼用连铸机。经改造后,该小方坯连铸机设有谐振式结晶器和组合式结晶器搅拌器。板坯铸流采用四偏心轮振动系统。板坯铸流至小方坯铸流的间距为1650mm。同时也可以1100mm间距按一机两流方式在板坯铸流上浇铸小方坯。板坯铸速0.8—1.2m/min。小方坯铸速1.1-2.2m/min。在设计方案中考虑了通过更换极少量部件和通过快速更换铸流导辊,形成板坯铸流浇铸方式,使调整时间大大缩短,与单一功能连铸机相似。除了可生产小方坯,该新的高度灵活兼用连铸机还可生产最大宽度1300mm的板坯,藉此钢厂可将板坯产量提高到150000t/a左右。 相似文献
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瑞典钢铁公司 Tunnpla°t厂板坯连铸机改造一期工程于 2 0 0 0年 7月完成 ,内容包括铸机机头的改造、在 4号连铸机上安装奥钢联开发的 DYNAFL EX液压振动装置以及在 4号和 5号连铸机上安装HYDROWAM液压调宽系统。这一改造的主要收益是提高设备作业率、增大操作灵活性、增加连铸机产量以及改善板坯质量。计划于 2 0 0 1年实施的二期改造将包括 4号连铸机铸坯导向系统的改造 相似文献
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The electromagnetic field and flow analysis model were developed to simulate the electromagnetic field and the flow pattern in a vertical curved continuous slab caster with the in-roll type strand electromagnetic stirring.The transient electromagnetic field distribution and the induced electromagnetic force were numerically described.The effects of stirring current,stirring frequency,and different stirrer configurations on the electromagnetically driven flow field in the strand were investigated and the optimization of the stirring parameters was discussed by performing a relative comparison of numerical results.Results show that the in-roller type strand electromagnetic stirrer(SEMS)pair generates the fluctuating magnetic fields,penetrating through the cast slab and periodically parallel shifting along the slab wide face with time evolution.The transient induced electromagnetic forces travels toward the magnetic flux shifting direction.Different stirring parameters(i.e.current and frequency)and stirrer configurations affect the stirring strength and the flow recirculation pattern in the strand,which are closely related to metallurgical performances of the stirrers.There is an optimum frequency to obtain the maximum stirring.The present model provides a relatively theoretical insight into the in-roll type strand electromagnetic stirring system for best operating. 相似文献
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《Baosteel Technical Research》2010,(Z1):116
On April 23,2009,a new single strand slab caster at ThyssenKrupp Acciai Speciali Terni(TKAST) was successfully started up with the first cast of AISI 304 grade in Terni plant,central Italy.TKAST is the Italian company of ThyssenKrupp Stainless group. The new caster is designed for a total capacity of approx.900.000 tpy of stainless steel slabs covering the complete range of stainless grades,including AISI 300 and 400 families(austenitic,ferritic and martensitic grades).This state of the art caster for the production of 215 mm thick slabs replaced an existing thin slab caster. This paper resumes the reasons of the installation of the new plant designed,manufactured erected and commissioned by Danieli and describes the technological solution,main features as well as the excellent results of this state of the art caster. 相似文献
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The processes of solidification and heat extraction are important for the continuous casting of steel. In this work, investigations on the influence of support roller contact on solidification in a strand of a slab caster, such as surface temperature and strand shell growth, and on thermal strain and stress in the slab have been carried out. The results show that roller contact has an influence on the solidification of steel and on the thermo‐mechanical behaviour of the strand. 相似文献
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薄板坯连铸连轧技术推动传统连铸高速化 总被引:2,自引:0,他引:2
薄板坯铸机生产达到了较高的浇铸速度。从薄板坯连铸轧技术“薄、快、连”的特点出发,分析了变截面结晶器、铸轧、非正弱振动、电磁制动在薄板坯连铸中的作用。经技术特点对比,认为厚板坯的高速浇铸条件好于或不次于薄板坯,厚板坯连铸可以达到薄板连铸同样高的铸速水平(4-6m/min)并适用于单流的连铸直轧生产。 相似文献