A kind of method for preparing alloy soft magnetic powder core
A technology of soft magnetic powder cores and alloys, applied in the direction of magnetic materials, magnetic objects, inorganic materials, etc., can solve the problems of reduced magnetic permeability, and achieve the effects of high density, minimized eddy current loss, and high-frequency magnetic permeability
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Embodiment 1
[0035] The method for preparing alloy soft magnetic powder core of the present embodiment comprises the following steps:
[0036] The thin iron-based amorphous metal strips produced by the flat-flow casting method are heat-treated at 290° C. for 2.5 hours to make them brittle and easily crushed. Pulverizing the brittle amorphous metal strip, using a pulverizer mainly through two steps of coarse crushing and fine crushing to obtain amorphous metal powder;
[0037] The amorphous metal powder is sieved and proportioned, thereby dividing the powder into a powder that can pass through -200~+270 mesh and a powder that can pass through -270~+325 mesh, and then mixing them into powder particles, the The proportion distribution of the powder particles is composed of 60% by weight of powder passing through -200~+270 mesh and 40% by weight of powder passing through -270~+325 mesh.
[0038]The mixed amorphous metal powder is subjected to passivation and insulation coating treatment, pass...
Embodiment 2
[0042] The difference between this example and Example 1 is that in the amorphous metal powder particles mixed by sieving and proportioning, the weight content of the powder passing through -200~+270 mesh is 65%, and the powder passing through -270~+325 mesh The weight content is 35%.
[0043] Observe the surface composition of the prepared magnetic powder core, measure the magnetic properties of the prepared magnetic powder core, and record the magnetic permeability in Table 1.
Embodiment 3
[0045] The difference between this example and Example 1 is that in the amorphous metal powder particles mixed by sieving and proportioning, the weight content of the powder passing through -200~+270 mesh is 75%, and the powder passing through -270~+325 mesh The weight content is 25%.
[0046] Observe the surface composition of the prepared magnetic powder core, measure the magnetic properties of the prepared magnetic powder core, and record the magnetic permeability in Table 1.
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