公开(公告)号：EP0707908A4

公开(公告)日：1997-05-02

申请号：EP95913413

申请日：1995-04-03

申请人： NIPPON STEEL CORP

发明人： MATSUMURA YOSHIKAZU ,  MORIMOTO YOSHIO ,  SHIO KIYOMI ,  UESHIMA YOSHIYUKI ,  MIZOGUCHI TOSHIAKI ,  AKAMATSU SATOSHI ,  OGAWA SHIGERU ,  KOYAMA KAZUO

IPC分类号： B21B1/46 ,  B21B41/08 ,  B21B45/00 ,  B21B45/02 ,  B22D11/06 ,  B22D11/12

CPC分类号： B21B1/463 ,  B21B41/08 ,  B21B45/0218 ,  B21B2045/006 ,  B22D11/0622 ,  B22D11/1206

摘要： A twin-roll type continuous casting device is provided which can produce sheets having good mechanical strength obtained through uniform crystal grain refinement and smooth and low surface roughness obtained by reducing variation in the quality of material and reduce equipment costs. A temperature of a cast piece C obtained by being solidified by means of a pair of water-cooled casting rolls (2a, 2b) is regulated to fall within a temperature range where an austenite structure exists in its own matrix, and after it has been so solidified, the cast piece is then rolled by means of an inline rolling mill (5) at a temperature ranging from 850 °C or higher to 1350 °C or lower and with a rolling reduction ranging from 5 % or higher to 50 % or lower in one pass, whereby the variation in total elongation of steel material is kept within 5 % in standard deviation.

摘要翻译： 提供了一种双辊型连续铸造装置，其可以生产通过均匀的晶粒细化获得的具有良好机械强度的片材，并且通过减少材料质量的变化而获得的平滑和低的表面粗糙度，并降低设备成本。 将通过一对水冷铸造辊（2a，2b）固化得到的铸件C的温度调节为在其自身的基体中存在奥氏体组织的温度范围内， 固化后，通过在线轧机（5）在850℃以上至1350℃以下的温度下进行轧制，轧制压下率在5％以上至50％以下，或 一次通过下降，由此钢材的总伸长率的变化在标准偏差中保持在5％以内。