热轧板横折缺陷的成因分析  

ANALYSIS OF CAUSES FOR CROSS BREAKS DEFECT FORMATION DURING HOT STRIP UNCOILLING AND LEVELLING

作　　者：王丹[1] 左军[1] 黄徐晶[1] 康明 骆中云 陈继林 

机构地区：[1]攀枝花钢铁研究院,四川攀枝花617000 [2]攀钢热轧板厂,四川攀枝花617062

出　　处：《钢铁钒钛》2000年第1期29-35,共7页Iron Steel Vanadium Titanium

摘　　要：针对热轧低碳钢卷开卷过程中出现的横折缺陷 ,运用弹塑性力学、金属学等知识分析了钢卷在开卷矫直过程中的弯曲变形、应力分布、屈服平台和形变时效等问题 ,认为横折缺陷不是由板形引起的 ,而是由低碳钢普遍存在的屈服平台引起的 ,从而为解决横折缺陷提供了依据。Based on cross breaks defect formation during uncoilling of hot strip of low carbon steel,the bending deformation,stress distribution,yield point elongation and strain aging of the hot strip during uncoilling and levelling were analyzed by use of the knowledge,such as elastic-plastic mechanics and metal science etc.It is believed that the bad flatness of the hot strip is not responsible for the cross breaks formation.The defect results from yield point elongation of the low carbon steel,thus providing a basis for solution of the cross breaks defect.

关 键 词：横折 板形 屈服平台 弯曲变形 开卷 钢卷 

分 类 号：TG335.5[金属学及工艺—金属压力加工]