阅读说明：本技术 一种铁硅铬软磁合金粉及其制备方法 (Iron-silicon-chromium soft magnetic alloy powder and preparation method thereof ) 是由 赵军喜 于 2020-04-27 设计创作，主要内容包括：本发明公开一种铁硅铬软磁合金粉,所述铁硅铬软磁合金粉的合金元素质量百分比为Si0.3-1.0％、Cr16-18％、Mn0.3-1.2％、Ni12-14％、余量为Fe。本发明粉末氧含量可控,杂质含量低,C元素质量分数小于等于0.03％；此方法粉末呈不规则形貌,压制烧结后成品机械强度高,透气性好,耐高温,过滤精度范围较广；激光粒度在20～30μm之间,氧含量小于0.28％,振实密度≤3.8g/cm<Sup>3</Sup>。(The invention discloses iron-silicon-chromium soft magnetic alloy powder, which comprises, by mass, 0.3-1.0% of Si, 16-18% of Cr, 0.3-1.2% of Mn, 12-14% of Ni and the balance of Fe. The oxygen content of the powder is controllable, the impurity content is low, and the mass fraction of the C element is less than or equal to 0.03 percent; the powder is in irregular shape, and the pressed and sintered product has high mechanical strength, good air permeability, high temperature resistance and wider filtration precision range; the laser granularity is between 20 and 30 mu m, the oxygen content is less than 0.28 percent, and the tap density is less than or equal to 3.8g/cm 3 。)

1. An iron-silicon-chromium soft magnetic alloy powder is characterized in that: the Fe-Si-Cr soft magnetic alloy powder comprises, by mass, Si 4.6-5.0%, Cr 5.2-5.5%, Ti 0.1-0.2%, and the balance Fe.

2. A method for preparing the iron-silicon-chromium soft magnetic alloy powder according to claim 1, which comprises the following steps:

(1) the four raw materials of Si, Cr, Ti and Fe are proportioned according to a proportion, put into an intermediate frequency furnace for smelting, melted to 1630-;

(2) and drying, screening and batching the atomized powder to obtain the finished product of the Fe-Si-Cr alloy powder.

Technical Field

The invention relates to the technical field of alloy powder, in particular to iron-silicon-chromium soft magnetic alloy powder and a preparation method thereof.

Background

The metal soft magnetic powder core has the functions of magnetoelectric conversion, energy storage, filtering and the like, and is often used for manufacturing PFC inductors, chokes, filters, reactors, photovoltaic inverters and the like. With the development of high frequency, miniaturization and low power consumption of electronic components, the metal soft magnetic powder core develops towards high saturation magnetic induction strength and low loss, and soft magnetic alloy powder is used as a raw material for preparing the metal soft magnetic powder core and plays a key role in the performance of the magnetic powder core.

Disclosure of Invention

The invention aims to provide iron-silicon-chromium soft magnetic alloy powder and a preparation method thereof aiming at the defects and the defects of the prior art.

In order to achieve the purpose, the invention adopts the technical scheme that: the iron-silicon-chromium soft magnetic alloy powder has the innovation points that: the Fe-Si-Cr soft magnetic alloy powder comprises, by mass, Si 4.6-5.0%, Cr 5.2-5.5%, Ti 0.1-0.2%, and the balance Fe.

The preparation method of the iron-silicon-chromium soft magnetic alloy powder has the innovation points that the method comprises the following specific steps:

(1) the four raw materials of Si, Cr, Ti and Fe are proportioned according to a proportion, put into an intermediate frequency furnace for smelting, melted to 1630-;

(2) and drying, screening and batching the atomized powder to obtain the finished product of the Fe-Si-Cr alloy powder.

The invention has the beneficial effects that:

the invention has yield of more than 65 percent, fine powder granularity, low oxygen content and low impurity content; meanwhile, the powder obtained by the invention has better sphericity and excellent magnetic property after being made into a magnetic powder core.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail with reference to the following embodiments. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.