Abstract: The effect of coiling temperature after hot rolling on the microstructure, texture evolution and magnetic properties of 0.4 % Si nonoriented silicon steel was investigated under laboratory conditions. The results showed that the increase of the coiling temperature from  630 ℃ to 700 ℃ was conductive to the nucleation and growth of the hot rolled coiled sheet, leading to coarse the microstructure of the steel before cold rolling.The mean grain size of the annealed plate was increased from 26.1 μm to 41.5 μm, and the iron loss was decreased from 5.634 W/kg  to 4.825 W/kg. In the case of the coiling temperature at 630 ℃，the volume fraction of unfavorable {111} oriented grains in annealed plates was 31.6 %, and the favorable {001} and Goss oriented grains was 4.6 %. By contrast, in the case of the coiling temperature at 700 ℃, the volume fraction of {111} oriented grains was decreased to 21.2 %, and {001} and Goss oriented grains was increased to 5.9 %.With the increase of the coiling temperature, the favorable textures were enhanced while the unfavorable textures were significantly weakened, thus increasing the magnetic induction from 1.754 T to 1.774 T.

Key words: nonoriented silicon steel, texture, coiling temperature, magnetic property