答:分层主要表现在钢板内部或断面出现连续或断断续续的线条状分离层。在分离层的缝隙中有时也有肉眼可见的夹杂物,分离层在钢板的边缘时,一张钢板明显呈现两层板。而在钢板中部时,板面可能出现无规则小波纹或凸包。有分层的钢板,在钢板冲压加工时,部分会出现分离层分开现象。分层主要产生原因是带坯内部存在集中分布 A: The stratification is mainly manifested in the continuous or intermittent strip-shaped separation layer inside or in the cross section of the steel plate. Occasionally there are also visible inclusions in the gap of the separation layer. When the separation layer is at the edge of the steel plate, a steel plate obviously presents two layers of plates. In the middle of the plate, the plate surface may appear irregular small corrugated or convex hull. A layered steel plate in the stamping process, the separation layer will appear part of the phenomenon. The main reason for the stratification is that there is a concentrated distribution inside the strip