As main inhibitor or auxiliary inhibitor for grain-oriented silicon steel

the particles of inhibitor bearing copper not only inhibit the primary crystal growing and promote the secondary recrystallization

but also decrease the heat temperature of casting slab. The main inhibitor for grain-oriented silicon steel is 10 ~ 50 nm Cu

2

S

which precipitate in process and procedure including steel casting slab

hot rolling

cold rolling and decarburizing process

while the 30 - 50 nm or more than 50 nm （ Cu

Mn）

1.8

S

Cu

1.8

S and ε-Cu etc are mainly as auxiliary inhibitor which mostly precipitate in hot rolling process. The progress of research works on behaviors of solution and precipitation of inhibitors bearing copper in grain-oriented silicon steel at home and abroad is summarized in this paper

and current research works are precipitated behaviors and effect mechanism of i

nhibitors bearing copper in different production flow sheet and procedure.