关键词: 双辊连铸, 无取向硅钢, 组织, 织构, 析出物

Abstract: Given the lengthy production cycle, high energy consumption, and other shortcomings of the traditional process for producing silicon steel, a twin-roll casting process was used to produce 3%Si non-oriented silicon steel casting strips. MEM, SEM, and TEM were used to compare micro-structure, texture, and precipitate characteristics of a casting strip containing 0.6%Al with another containing 0.9%Al. The structure of 3%Si non-oriented silicon steel produced by the twin-roll casting process was a uniform isoaxial grain, with average grain size approximate 300 μm. Texture of the strip altered significantly with changes in Al mass fraction. Texture intensity of {100} in the cast strip with 0.9%Al was 7-fold stronger than with random texture. Precipitates were AIN and MnS with maximum size about 500 and 50 nm, respectively.