Preparation method of low-temperature high-magnetic induction grain-oriented silicon steel
A high magnetic induction oriented, silicon steel technology, applied in the field of metallurgy, can solve the problems of affecting the surface quality of products, increasing the number of nucleation, and difficulty, and achieve the effect of preventing the size from being too large or too small, improving the surface quality and improving the magnetic properties.
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[0037] The chemical composition and weight percentage of low temperature high magnetic induction grain oriented silicon steel in Examples 1 to 10, C: 0.04% to 0.065%, Si: 2.95 to 3.35%, Als: 0.0225 to 0.0325%, Mn: 0.055 to 0.095%, N : 0.0070~0.0090%, S: ≤0.0045%, Sn: ≤0.1050%, Cu: ≤0.0950%, Ti: ≤0.0015%, and the rest are Fe and unavoidable inclusions. The low temperature high magnetic induction grain oriented silicon steel in Examples 1-10 is manufactured according to the following steps:
[0038] (1) Smelting;
[0039] (2) Billet heating: the temperature of billet heating is 1100-1200°C;
[0040] (3) Hot rolling: the thickness of the slab after conventional hot rolling is 2.0-2.8mm;
[0041] (4) Normalization: After coiling, the steel coil is dried in pure N 2 Under normal conditions, carry out conventional process normalization;
[0042] (5) Cold rolling: the normalized coil is cold rolled once until the thickness d of the finished product is 0.22-0.35mm;
[0043] (6) D...
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