一、前言近年来随着国内大型连铸板坯的生产,高效率连轧带钢由于连续单向轧制和严格的低终轧温度的控制,使钢中夹杂物,特别是硫化物(MnS)在热加工过程中沿轧制长度方 I. Introduction In recent years, with the production of large-scale continuous casting slabs in China, the high-efficiency continuous strip has been subjected to continuous unidirectional rolling and strict control of the temperature of the final finish rolling, so that the inclusions in the steel, especially the sulfides ) Along the length of the rolling mill during hot working