The invention provides a super low carbon steel rolling ferritic rolling method and device for the super deep drawing of the continuous casting and continuous rolling, which belongs to the field of metallurgical steel rolling. The invention of B process for continuous casting and rolling, rolling into scale rapid cooling of high pressure water for billet, (phase change control), high pressure water descaling mill, ferrite rolling (the purge water), layer cooling, cooling device, high speed flying shear volume of coiler. The invention solves the conventional hot roughing process before the heating temperature is high, and the problem of roughing austenite ferrite iron finishing zone between the long cooling time and temperature to be represented by CSP rolling thin slab continuous casting and rolling temperature, coil surface quality and formability of stability control problems, with compact arrangement, less investment safe and reliable, high production efficiency, energy saving and environmental protection, and reduce the cost advantage, realize the endless casting and rolling and ferrite rolling production of super deep drawing with super low carbon steel.
【技术实现步骤摘要】
无头连铸连轧超深冲用超低碳钢卷铁素体轧制方法和装置
本专利技术属于冶金轧钢
,特别提供了一种无头连铸连轧生产超深冲用超低碳钢卷的铁素体轧制方法和装置。
技术介绍
薄板坯连铸连轧技术是20世纪80年代末出现的新技术。主要有德国SMS公司的CSP工艺,采用辊底式炉进行加热、均热和保温,与德国Thyssen厂合作的CPR工艺可实现半无头轧制;德国MDS公司的ISP工艺,中间坯经感应加热和热卷箱式均热,可实现半无头轧制;意大利Danieli公司的FTSR工艺,具有液芯压下技术,经辊底式隧道炉加热、保温后粗轧,精轧和粗轧间设有保温辊道;日本住友金属的QSP工艺,连铸坯经辊底式炉加热;奥钢联的CONROLL工艺,有感应式边部加热器和辊底式均热炉;意大利Arvedi公司的ESP工艺,连铸包括液芯压下、轻压下等,精轧和粗轧间采用感应加热,是世界第一条薄板坯无头连铸连轧生产线。“一种带钢生产工艺—ESP”(吕坤勇,中国专利,200510057404.5)提出了一种新型ESP工艺:连铸机(液芯压下)→摆动剪分坯→加热炉→除鳞→粗轧机→除鳞→精轧机组→层流冷却→卷取机。德国SMS ...
【技术保护点】
一种无头连铸连轧超深冲用超低碳钢卷铁素体轧制方法,其特征在于:所述超深冲用超低碳钢化学成分及质量百分含量为:C≤0.007%,Si≤0.05%,Mn≤0.25%,Nb≤0.050%,Ti≤0.070%,Als:0.010—0.060%,P≤0.015%,S≤0.010%,N≤0.005%,O≤0.0035%,其余为Fe和不可避免的不纯物;生产线工艺流程为连铸成坯→高压水除鳞→粗轧机组粗轧→快速冷却、控制相变→高压水除鳞→精轧机组铁素体轧制、机架间吹扫水→层冷装置冷却→高速飞剪分卷→卷取机卷取。
【技术特征摘要】
1.一种无头连铸连轧超深冲用超低碳钢卷铁素体轧制方法,其特征在于:所述超深冲用超低碳钢化学成分及质量百分含量为:C≤0.007%,Si≤0.05%,Mn≤0.25%,Nb≤0.050%,Ti≤0.070%,Als:0.010—0.060%,P≤0.015%,S≤0.010%,N≤0.005%,O≤0.0035%,其余为Fe和不可避免的不纯物;生产线工艺流程为连铸成坯→高压水除鳞→粗轧机组粗轧→快速冷却、控制相变→高压水除鳞→精轧机组铁素体轧制、机架间吹扫水→层冷装置冷却→高速飞剪分卷→卷取机卷取。2.根据权利要求1或2所述的一种无头连铸连轧超深冲用超低碳钢卷铁素体轧制方法,其特征在于:采用无头连铸连轧技术,连铸拉速4m/min—8m/min,板坯厚度为70mm—130mm,中间坯厚度为6mm—25mm,成品厚度为0.6mm—4mm。3.根据权利要求1所述的一种无头连铸连轧超深冲用超低碳钢卷铁素体轧制方法,其特征在于:精轧采用铁素体区轧制技术,粗轧机组在1150℃—1050℃的奥氏体温度区进行轧制;精轧机组在880℃—730℃的铁素体区轧制;快速冷却装置是为了控制相变,实现奥氏体向铁素体的转变,同时确保精轧温度命...
【专利技术属性】
技术研发人员:康永林,田鹏,朱国明,秦哲,郭呈宇,
申请(专利权)人:北京科技大学,
类型:发明
国别省市:北京,11
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