热轧硅钢板沿表面附近板厚方向的组织变化改善单取向硅钢板的Ｇ。ＳＳ方位二次再结晶组织，对改善其磁特性十分重要。因此，研究了作为Ｇ。ＳＳ核发生源的热轧板表面附近和沿板厚方向的晶粒组织变化。试验所用的单取向热轧硅钢板的化学成分含（ｗｔ％）Ｓｔ３．３５、Ｍｎ... Microstructures of hot-rolled silicon steel along the thickness direction near the surface of the hot-rolled silicon steel are improved. SS azimuth secondary recrystallization organization, to improve its magnetic properties is very important. Therefore, we studied as G. SS nuclear origin of hot-rolled plate near the surface and along the thickness direction of the grain structure changes. The chemical composition of the unoriented hot-rolled silicon steel used in the test is (wt%) St3.35, Mn ...