热轧中厚板边裂的分析与控制  

Control and analysis on edge crack on medium and heavy plate

作　　者：吴海波[1] 冯翔宇[1] 王亚[1] 王景[1] 

机构地区：[1]安阳钢铁集团公司,河南安阳455004

出　　处：《冶金标准化与质量》2008年第3期29-31,共3页Metallurgical Standardization & Quality

摘　　要：通过对钢板表面边部裂纹进行宏观观察和微观分析,通过控制 Al、S 和 N 的含量,避免高温浇注,需用合适保护渣,控制矫直温度,保持铸机状态良好,改善铸坯的表面质量;减小横轧展宽量,提高板坯加热均匀性,保证轧制压下量,减小轧件边部不均匀变形,保持圆盘剪状态良好,可大大降低中厚板边裂的发生率,可有效的减少边部裂纹的发生。Through the edge of the plate surface cracks observed macro and micro analysis, by controlling Al, S and N content to avoid high-temperature casting, require appropriate protection slag, straightening temperature control, and maintain in good casting machine to improve the surface quality slab decreasing cross rolling wide, improving slab heating uniformity, guarantee of rolling reduction, reducing the workpiece edge uneven deformation, shear state disk maintain good side plate can be greatly reduced the incidence of cleft, which can effectively reduce the side of the crack occurred.

关 键 词：中厚板 边裂 控制工艺 

分 类 号：TG335.11[金属学及工艺—金属压力加工]