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.
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