应用板形控制与冷轧机型配置理论,以宝钢2030冷连轧机组第5机架从CVC机型改造成DSR机型的技术案例以及改造后的机组板形控制能力仍不足为背景,研究指出,机组机型配置采用4架常规4辊轧机搭配1架高技术板形轧机(如CVC、DSR等)的冷连轧机组的板形控制能力有限,不能完全满足汽车板尤其是高强度钢板的板形控制需要,据此提出了针对2030冷连轧机组的机型完善改进方案,包括1～4机架使用的VCL支持辊辊形技术及与其配套的工作辊凸度和第5机架配套的支持辊辊形.生产应用表明,完善改进后机型,即4架使用VCL技术的常规4辊轧机+1架CVC或DSR轧机,极大地提高了此机组的板形控制能力,高强钢产品的板形问题得到了根本解决,取得了显著的经济效益.
According to the theory of flatness control and mill type configuration of tandem cold mill, based on the flatness control capability and production results after the modification that CVC mill type was changed to DSR mill type on stand 5 of 2 030mm tandem cold mill in Baosteel, the following results are presented the insufficient flatness control capability of mill type of conventional 4-roll mill on four stands combined with high-tech mill on one stand, such as CVC, DSR and so on, flatness accuracy of automobile sheet and high strength steel could not meet the re-quirement. It is proposed that VCL roll profile of back up rolls on stand 1-4 with corresponding work roll crown and special back up roll profile on stand 5. After the modification, mill type was changed to VCL conventional 4-roll mill on four stands + CVC or DSR mill on one stand, production showed that flatness control capability was obviously increased, problem of edge wave of high strength steel was thoroughly solved, remarkable economic benefit had been brought.
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