济钢冷轧生产中热划伤现象的研究

Research of Heat-scratches in Cold Rolling Process of Jinan Steel

热划伤是冷轧生产中一个比较棘手的产品表面质量问题,通过对济钢冷轧板厂生产初期遇到的热划伤现象出现规律的分析和轧制润滑机理的研究,认为热划伤主要是轧制过程中冷却和润滑不良产生的。经过一系列改进轧制试验,结果表明,优化轧制参数、提高轧辊加工质量、改进乳化液参数、改进轧制油配方等是解决热划伤缺陷的有效措施。

Heat-scratches defect is a troublesome surface quality question in cold wiling process. Based on the analysis of heat-scratches phenomenon in early production of Jinan steel cold rolling plant and the research of rolling lubrication principle, the author believes that the lacking of cooling and lubrication is the main reason of heat-scratches. After many times of rolling practice alteration, we found that optimization of rolling condition parameters, improvement of roll surface quality and upswing of water soluble oil solution system and roll oil are effective methods in resolving heat-scratches.