Mu90 iron, silicon and nickel magnetic powder core material and method for manufacturing same
A magnetic powder core, FeSiNi technology, applied in the field of μ90 FeSiNi magnetic powder core material and its preparation, can solve the problems of high overall loss, high eddy current loss, reduced coercivity, etc. The effect of reducing coercivity and reducing impurities
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Embodiment 1
[0027] Weigh 86 parts by weight of industrial iron ingots and 6 parts by weight of silicon ingots, and put them into a vacuum of 6.7×10 -3 The initial smelting is carried out in a vacuum intermediate frequency induction furnace of Pa, and an appropriate amount of SiO is added 2 , used to remove slag. The smelting temperature is 1460°C, the smelting time is 1h, and the iron-silicon binary alloy ingot is obtained by cooling with the furnace. The iron-silicon binary alloy ingot is crushed with a crusher to obtain fragments with a diameter of 3 cm, and 8 parts by weight of nickel powder with a particle size of -300 mesh are evenly mixed into the fragments, and secondary melting is carried out in a vacuum intermediate frequency induction furnace. The melting temperature is 1470°C and the melting time is 1.5h. After the alloy is smelted, it directly enters the tundish of the vacuum air atomization powder making machine, sprays the powder with nitrogen, collects the gas atomized po...
Embodiment 2
[0029] Weigh 82 parts by weight of industrial iron ingots and 8 parts by weight of silicon ingots, and put them into a vacuum of 6.7×10 -3 The initial smelting is carried out in a vacuum intermediate frequency induction furnace of Pa, and an appropriate amount of SiO is added 2 , used to remove slag. The smelting temperature is 1600°C, the smelting time is 1h, and the iron-silicon binary alloy ingot is obtained by cooling with the furnace. The iron-silicon binary alloy ingot is crushed with a crusher to obtain fragments with a diameter of 6 cm, and 10 parts by weight of nickel powder with a particle size of -300 mesh is evenly mixed into the fragments, and secondary melting is carried out in a vacuum intermediate frequency induction furnace. The melting temperature is 1600°C and the melting time is 1.5h. After the alloy is smelted, it directly enters the tundish of the air atomization powder making machine, sprays the powder with nitrogen, collects the aerosol powder, and si...
Embodiment 3
[0031] Weigh 91 parts by weight of industrial iron ingots and 4 parts by weight of silicon ingots, and put them into a vacuum of 6.7×10 -3 The initial smelting is carried out in a vacuum intermediate frequency induction furnace of Pa, and an appropriate amount of SiO is added 2, used to remove slag. The smelting temperature is 1500°C, the smelting time is 1h, and the iron-silicon binary alloy ingot is obtained by cooling with the furnace. The iron-silicon binary alloy ingot is crushed with a crusher to obtain fragments with a diameter of 4 cm, and 5 parts by weight of nickel powder with a particle size of -300 mesh are evenly mixed into the fragments, and secondary melting is carried out in a vacuum intermediate frequency induction furnace. The melting temperature is 1500°C and the melting time is 1.5h. After the alloy is smelted, it directly enters the tundish of the air atomization powder making machine, sprays the powder with nitrogen, collects the aerosol powder, and sie...
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