大型锻钢支承辊制造技术的现状及发展

Progress of manufacturing technology on large forged steel backup rolls and future developments

随着现代化轧机装备及轧制技术的不断升级,轧制产品的要求不断提高,以及半高速钢、高速钢材质工作辊(中间辊)的推广应用,对支承辊的使用性能也提出了更高的要求。本文阐述了国内外支承辊制造技术的现状,并就支承辊材料、冶炼工艺、热处理工艺等方面的发展趋势进行了分析,指出支承辊功能个性化是满足不同轧机、不同产品需求的必然选择,更高合金材料设计、电渣重熔处理和整体感应淬火工艺将是支承辊技术的发展方向。

With the upgrading of the rolling technology and rolling mills,higher quality requirements for rolled products,and application of semi-high-speed steel&high-speed steel work rolls(intermediate rolls),the demands for rolling performance of backup rolls become more rigorous.In this paper,the status of the backup roll manufacturing technology was described,the development trend of the materials,melting and heat treatment process were analyzed.In order to meet the demands of various mills and products,backup rolls with customized function become an inevitable choice,the higher alloy content design,electroslag remelting and induction heating process will be the critical direction in future development.