A kind of preparation method of high-performance high-alumina silicon steel
A high-alumina-silicon, high-performance technology, applied in the field of powder metallurgy, can solve problems such as unstable performance and low yield, and achieve the effects of improving product quality and yield, high production efficiency, and reducing iron loss
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Embodiment example 1
[0030] (1) 30μm gas atomized Fe-3.2wt.%Si powder, 10μm gas atomized aluminum and 20μm 25wt.%P-Fe alloy powder were prepared according to Fe-3wt.%Si-4wt.%Al-0.1wt. %P is used for batching, and a rolling ball mill is used for ball milling and mixing, the ratio of ball to material is 2:1, and the mixture is mixed for 3.5 hours to make mixed powder;
[0031] (2) The mixed powder is annealed in a vacuum high-temperature furnace, and heated at 350° C. for 2 hours to fully remove the stress generated by work hardening. ;
[0032] (3) A 40° inclined rolling mill is used, and the friction force between the roll and the powder is used to feed the material, and the thickness of the rolled green sheet is 2.3mm, the width is 160mm, and the density is 6.1g / cm 3 ;
[0033] (4) vacuum sintering the green sheet at 1150° C. for 4 hours to achieve metallurgical bonding and element diffusion homogenization to obtain a sintered slab;
[0034] (5) After heating the above-mentioned sintered slab ...
Embodiment example 2
[0038] (1) 60μm gas-atomized Fe-4.7wt.%Si powder, 8μm gas-atomized aluminum powder and 15μm 40wt.%P-Fe alloy powder according to Fe-4.5wt.%Si-3.5wt.%Al- 0.2wt.% P is used for batching, and the ball-milling mixing is carried out with a rolling ball mill, and the ratio of the balls to the material is 2:1, and the mixture is mixed for 5 hours to prepare a mixed powder;
[0039] (2) The mixed powder is annealed in a vacuum high-temperature furnace, and heated at 400° C. for 3 hours to fully remove the stress generated by work hardening. ;
[0040] (3) Using a 60° inclined rolling mill, the friction force between the roll and the powder is used to feed the material, and the thickness of the rolled green sheet is 2.0mm, the width is 240mm, and the density is 6.32g / cm 3 ;
[0041] (4) vacuum sintering the green sheet at 1180° C. for 3 hours to achieve metallurgical bonding and element diffusion homogenization to obtain a sintered slab;
[0042] (5) After heating the above-mentione...
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