公开(公告)号：EP0796675A4

公开(公告)日：1999-05-19

申请号：EP96932826

申请日：1996-10-07

申请人： NISSHIN STEEL CO LTD

发明人： OKANO TETSUHIKO ,  MIKI TOSHINORI ,  OTSUKA MASAKI ,  HAYAKAWA JUNYA

IPC分类号： B21B1/36 ,  B21B28/04 ,  B21B45/02 ,  B21B45/06

CPC分类号： B21B45/06 ,  B21B1/36 ,  B21B28/04 ,  B21B45/0251

摘要： When a hot rolled steel sheet in coil (1) is subjected to high draft rolling by a cold rolling mill (4), crack, delamination or the like is produced in scale which cannot follow spreading of a ground steel, so that adhesion of the scale to the ground metal is degraded. When such steel sheet in coil is subjected to brushing (5), brush bristles enter into gaps produced in a scale layer, so that the scale is removed from surfaces of the steel sheet in coil. At this time, a draft R (%) is set in a manner to maintain a relationship t x R >/= 150 between the draft and a thickness of a hot rolled scale t ( mu m). The scale, of which adhesion is decreased during the high draft rolling, is removed from the surfaces of the steel sheet in coil by brush rolls (5) which are provided midway a sheet passage extending from the cold rolling mill (4) to bridle rolls. At the time of the high draft rolling, water having a large coefficient of friction or a water solution containing a water-soluble rolling oil is preferably supplied between work rolls of the cold rolling mill (4) and the steel sheet in coil (1). Since the steel sheet in coil (1) having been subjected to high draft rolling can be provided with necessary characteristics prior to pickling (8), only heat treatment after the pickling or an application of partial cold rolling makes the steel sheet in coil (1) usable as a cold rolled steel sheet in coil which is provided with the necessary characteristics.

摘要翻译： 当卷材（1）中的热轧钢板通过冷轧机（4）进行高拉深轧制时，产生的裂纹，分层等不能跟随研磨钢板的扩展，因此， 对地面金属的比例下降。 当线圈中的这种钢板经受刷洗（5）时，刷毛进入鳞片层中产生的间隙中，从而从钢板的卷材表面除去氧化皮。 此时，为了使热轧钢板的厚度t（μm）与拔模量之间保持t×R> / = 150的关系，设定拔模R（％）。 通过设置在从冷轧机（4）延伸的片材通道中间的刷辊（5）将在高速通风轧制期间粘附性降低的鳞片从卷材钢卷的表面上去除， 。 在高速通风轧制时，优选在冷轧机（4）的工作辊与线圈（1）的钢板之间供给摩擦系数大的水或含有水溶性轧制油的水溶液， 。 由于可以在酸洗（8）之前提供经受高拉拔轧制的卷材（1）中的钢板所需的特性，所以只有在酸洗或部分冷轧的施加之后的热处理使钢卷成为卷材（1 ）可用作具有必要特性的线圈中的冷轧钢板。