1·The subsurface oxide layers generated during decarburizing annealing of high grade non-oriented silicon steel sheet were studied by metallographical method and magnetoacoustic emission method(MAE).
通过金相法和磁声发射法（MAE）研究了高牌号无取向硅钢脱碳退火时所产生的内氧化层。
2·Grain size is small after intermediate annealing. Small and homogeneous grains are obtained after decarburizing annealing.
中间退火后晶粒细小，脱碳退火后晶粒细小均匀。
3·The invention discloses a heating method used for preventing the high carbon strip billet from decarburizing.
本发明公开了一种防止高碳带钢坯脱碳的加热方法。