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本文研究了加磷和最后真空退火前的临界变形对电工钢性能的影响。在低合金硅钢(硅为1.8％)中加入0.03—0.56％的磷。在上伊谢特冶金工厂的真空电炉中进行工业性试验。专门的实验证明了提高钢中磷含量可使晶粒显著地长大。所得数据证明,提高钢内磷含量可降低临界变形度并增大退火后的晶粒尺寸。如果含0.03％磷的薄板在压下量为14％时,引起晶粒的临界长大(晶粒度达到最大),则当钢内含0.36％磷时在适当的压下量下,将使晶粒大为细化;相反,含0.2—0.5％磷的钢在
In this paper, the effects of critical addition of phosphorus and the final vacuum annealing on the properties of electrical steel were studied. 0.03-0.56% phosphorus was added to the low-alloyed silicon steel (silicon 1.8%). Industrial tests were carried out in a vacuum electric furnace at the Ishiteh metallurgical plant. Specialized experiments have shown that raising the phosphorus content in the steel can significantly increase the grain size. The data obtained demonstrate that increasing phosphorus in the steel reduces the critical deformation and increases the grain size after annealing. If the 0.03% phosphorus-containing sheet causes a critical grain growth (maximum grain size) at 14% reduction, then with 0.36% phosphorus in steel at the proper reduction, The grain is greatly refined; on the contrary, steel containing 0.2-0.5% phosphorus is present