The invention provides a copper plate and a water cooling method for a peritectic steel slab continuous casting mold, dividing the water cooling side of the copper plate into two upper and lower regions, and setting up a water tank, an inlet pipe and an outlet pipe respectively to form two independent water cooling systems, an upper inlet pipe is connected with a water tank, and a temperature sensor and a suction pipe are arranged in the water tank. The electric heating device connected with the power control cabinet, the temperature sensor is connected with the PLC controller, the depth of the lower part of the flume is greater than the depth of the upper part of the flume. When the temperature sensor detects that the water temperature in the water tank is lower than the set value, the PLC controller controls the heating device to heat the cooling water in the water tank; when the water temperature reaches the set value, the electric heating device stops automatically, so that the water temperature in the water tank is at a constant value. The water temperature in the lower part is controlled by the original water cooling system. The invention can reduce the shrinkage of primary billet shell in meniscus area, facilitate the uniform growth of billet shell thickness, reduce surface crack defects, and improve the quality of peritectic steel continuous casting slab.
【技术实现步骤摘要】
一种包晶钢板坯连铸结晶器铜板及水冷方法
本专利技术属于连铸
,尤其涉及一种包晶钢板坯连铸结晶器铜板及其水冷方法。
技术介绍
在包晶钢的连铸生产时,由于在结晶器的弯月面附近的坯壳会发生包晶反应,坯壳收缩大,使结晶器弯月面区域热流不均匀,导致初生坯壳厚度不均匀。在厚薄交界处会出现应力集中,加之初生坯壳薄、高温强度低,易于形成铸坯表面裂纹。研究表明,降低结晶器弯月面区域的热流密度,能够抑制弯月面初生坯壳的收缩,利于弯月面区域热流的均匀,促进初生坯壳厚度的均匀,防止出现热应力集中而产生裂纹。采用结晶器弱冷技术是降低结晶器弯月面区域的热流密度有效方法。为了实现结晶器弱冷而开发的热顶结晶器,对改善结晶器传热效果显著。结晶器热顶技术通常有三种方法。第一种方法是将结晶器内表面刻划纵向沟槽,由沟槽处气隙热阻效果实现结晶器缓冷。该方法的优点是通过增加沟槽数目,铸坯初生坯壳与结晶器内壁间传热趋于均匀,铸坯初生坯壳厚度均匀,降低了坯壳的热应力,可减少铸坯表面裂纹。此方法缺点是结晶器寿命短,容易发生挂钢事故。第二种方法是在结晶器弯月面区水槽的内壁喷涂导热系数低的合金增大热阻,使弯月面 ...
【技术保护点】
1.一种包晶钢板坯连铸结晶器铜板,其特征在于,将结晶器铜板的水冷侧以弯月面区域向下45~55mm为界限分为上部和下部两个区域,上部区域和下部区域分别设置水槽,上部区域设有上部进水管和上部出水管,上部进水管与带有进水管的水箱连接,水箱内设有温度传感器和与电源控制柜相连的电加热装置,温度传感器与PLC控制器相连;下部区域设有下部进水管和下部出水管,下部进水管和下部出水管分别与原有水冷系统的进水管道和出水管道连接,使结晶器铜板形成上部和下部两个独立的水冷系统;上部区域水槽为等深度平底槽,下部区域水槽采用两段式设计,其上段设置成由浅到深纵截面为弧形的沟槽,下段为等深度平底槽,下部区 ...
【技术特征摘要】
1.一种包晶钢板坯连铸结晶器铜板,其特征在于,将结晶器铜板的水冷侧以弯月面区域向下45~55mm为界限分为上部和下部两个区域,上部区域和下部区域分别设置水槽,上部区域设有上部进水管和上部出水管,上部进水管与带有进水管的水箱连接,水箱内设有温度传感器和与电源控制柜相连的电加热装置,温度传感器与PLC控制器相连;下部区域设有下部进水管和下部出水管,下部进水管和下部出水管分别与原有水冷系统的进水管道和出水管道连接,使结晶器铜板形成上部和下部两个独立的水冷系统;上部区域水槽为等深度平底槽,下部区域水槽采用两段式设计,其上段设置成由浅到深纵截面为弧形的沟槽,下段为等深度平底槽,下部区域水槽下段深度大于上部区域水槽深度。2.根据权利要求1所述的包晶钢板坯连铸结晶器铜板,其特征在于,所述上部区域水槽的深度为10~15mm,下部区域水槽下段的深度为20~35mm。3.一种应用权利要求1所述包晶钢板坯连铸结晶器铜板的水冷...
【专利技术属性】
技术研发人员:李德军,朱晓雷,廖相巍,王爽,李晓伟,刘祥,许孟春,于赋志,黄玉平,康伟,
申请(专利权)人:鞍钢股份有限公司,
类型:发明
国别省市:辽宁,21
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