DEVELOPMENT OF HIGH-TEMPERATURE HOT-ROLLING PROCESS FOR GRAIN-ORIENTED SILICON STEEL

A numerical study was conducted to analyze the dissolution process of manganese sulfide, and the advantages of very-high-temperature and sho rt-time slab reheating prior to hot rolling were demonstrated. Inhibit or dissolution was greatly accelerated at elevated temperatures. High- temperature and short-time slab reheating also facilitated structure r efinement by static recrystallization with appropriate rolling schedul es and reduced initial grain sizes. This recrystallization also served to improve product surface quality. Another advantage of the high-tem perature hot-rolling process is increased flexibility for controlling inhibitor precipitation during hot rolling.