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1144 > 其他钢材信息 > 热轧带钢冷轧基料表面氧化铁皮

热轧带钢冷轧基料表面氧化铁皮

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  东莞市广毅荣冷拉钢厂;分析了热轧带钢表面氧化铁皮的成因、特点及结构组成,通过合理安排生产计划、控制工作辊辊面质量、优化终轧和卷取温度、提高钢卷冷却速率等措施,使冷轧基料产品的酸洗速度由原来约30-40m/min提高至60-70m/min,酸洗时间缩短了40%~50%。
  The formation causes, features and composition of oxide scale on the hot rolled strip were analyzed. The pickling speed could be increased from 30-40m/min to 60-70m/min, and the time was shortened 40% -50% based on some oxide scale prevention measures , such as controlling roll surface quality, optimizing finishing rolling and coiling temperature, increasing cooling speed of coil, etc.
  2250mm宽带钢热轧生产线按照动态精准设计体系设计,设计产能550万t/a,产品抗拉强度可达1000MPa,设计中采用了当今国际轧钢领域的20多项先进技术,整体工艺技术装备达到国际先进水平。本文介绍了首钢京唐2250mm热轧生产线的设计特点和采用的先进技术。工程设计中采用了步进式加热炉、热装热送技术、定宽压力机、二辊可逆式R1粗轧机、四辊可逆式R2粗轧机、7架四辊精轧机、CVC^plus板形控制技术、具有快速冷却功能的层流冷却技术(TMCP)等;并自主设计开发了托盘式钢卷运输设备、交一直一交传动控制、自动化检测与控制系统及完善的除尘环保系统。该生产线投产后,主要技术经济指标达到设计水平,实现了高效、优质、节能的目标。
  2250 mm broad strip hot rolling line of Shougang Jingtang Iron & Steel Plant is designed according to dynamic exactness design system. Rolling mill designed product capacity is 5.5 Mt/a. The tensile strength of production reach to 1000 MPa. More than 20 items advanced technologies in today international steel rolling technical field have been adopted. The whole process and equipment reach to the international advanced level. This paper introduces design peculiarity and advanced technologies of 2250 mm hot strip rolling line at Shouggang Jingtang. In engineering design,heating furnace by step, casting--hot charge rolling, sizing press, two- high R1 reversing roughing mill , four-high R2 reversing roughing mill, 7 stands four" high finshing mill, CVC^plus plate shape control technique, laminar strip cooling system with speediness cooling process(TMCP) and so on have been adopted. The coil pallet transportation system has been researched independent. The engineering have been optimized which include of AC-DC-AC drive control technique, automation measure and control system, perfect dusting system. After the engineering project commission, the main technical economy parameters have achieved design target, and the reached。
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