冷轧带钢平整时横折印缺陷的产生机理及消除措施  

Formation Mechanism and Elimination of Cross Breaks of Cold Rolled Strip During Temper Rolling

作　　者：马庆龙[1] 杨利坡[1] 彭艳[1] 刘宏民[1] 吴斌 

机构地区：[1]燕山大学轧制设备及成套技术教育部工程研究中心,河北秦皇岛066004 [2]凌源钢铁股份有限责任公司中宽冷带厂,辽宁凌源122500

出　　处：《钢铁》2008年第1期45-49,共5页Iron and Steel

基　　金：国家自然科学基金资助项目(50675186);河北省重大自然科学基金资助项目(E2006001038)

摘　　要：冷轧退火后的带钢在平整过程中产生横折印缺陷,严重影响平整后带钢的表面质量及其力学性能。通过分析带钢经过张力辊(S辊)时的受力过程,研究横折印缺陷的产生机理和影响因素,认为退火后的屈服平台和平整机入口前的带钢表面拉应力过大是带钢表面产生横折印缺陷的根本原因。制定合理的伸长率和张力制度,严格来料质量要求,可以避免横折印缺陷的产生,提高平整带钢的表面质量。Cross breaks are formed on the surface of cold rolled and tempered strip during temper rolling, which influence the surface quality and mechanical characteristics of the temper rolled strip. By analyzing the loading of strip at S rolls and formation mechanism and influencing factors of cross breaks, it was concluded that the main cause of cross breaks is the yield point elongation and the high tensile stress at the entrance of temper rolling mill. It is necessary to establish rational elongation and tension, control the quality of coming strip strictly, to avoid cross breaks, improve the surface quality of strip.

关 键 词：冷轧带钢 平整 横折印缺陷 张力 伸长率 

分 类 号：TG335.12[金属学及工艺—金属压力加工]