薄板坯连铸连轧生产取向电工钢模拟实验

 在实验室条件下模拟薄板坯连铸连轧流程试制了取向电工钢。结果表明，实验室条件下模拟薄板坯连铸连轧流程生产取向电工钢是可行的。试制的电工钢成品磁感较好，铁损偏高。实验中，铸坯中柱状晶发达，有穿晶出现，铸坯心部有少量等轴晶。热轧板和常化板晶粒尺寸沿板厚方向有明显变化，组织沿板厚方向可分为表面脱碳层、过渡层、中心层。中间退火后晶粒细小，脱碳退火后晶粒细小均匀。试验中，常化和产品厚度对产品磁性能的影响不明显。

Simulation of Grain-Oriented Electrical Steel Production With Thin Slab Casting and Rolling

Grain oriented electrical steel was produced with simulated TSCR (thin slab casting and rolling) in laboratory. The results show that it is feasible to produce grain oriented electrical steel with simulated TSCR in laboratory. The trial produced electrical steel has good magnetic induction intensity and high iron loss. Column grains develop well in casting blank, with transcrystalline grains and a little equiaxed grains in the center. Grain size of hot rolled slab and normalized slab changed obviously along slab thickness. Microstructure along thickness of hot rolled slab and normalized slab can be classified as surface decarburized layer, transition layer and center layer. Grain size is small after intermediate annealing. Small and homogeneous grains are obtained after decarburizing annealing. Normalizing treatment and product thickness affect magnetic property little in this experiment.