Studied both grain-oriented silicon steels (%: Nol- 0. 042C

3. 16Si

0. 009Al

0. 07Mn

0. 50Cu

0.015S

0.008 4N and No2- 0.040C

3.20Si

0.014A1

0. 22Mn

0.49Cu

0. 016S

0.008 2N) are melted by a 50 kg vacuum induction furnace

foiled to (mm) 350 x 120 x35 slab

heated at 1 250 ℃ for 30 min

with beginning rolling temperature 1 100℃. hot-rolled to 2.3 mm plate by 5 passes

finishing-rolled at 950 ~ 1 000 ℃. Test results show that the structure and texture along thickness of both hot-rolled plates are inhomogeneous: the subsurface layer is recrystallized structure which has a high Goss texture ； the central layer is deformed structure which has typical deformation textu

re. The subsurface layer {110} 〈001〉texture component in 0. 22% Mn No2 steel plate is weaker than that in 0. 07% Mn Nol steel plate

while the central layer {001} 〈110〉 texture component is greatly intensive than that in 0. 07% Mn Nol steel plate

led to difference of magnetic properties between both plates

the magnetic induction （B

800

）and iron loss (P

1.7/50

) of 0. 22% Mn No2 steel plate are respectively 1. 87 T and 1. 24 W/kg

while that of 0. 07% Mn Nol steel plate are respectively 1. 88 T and 1. 18 W/kg.