Water-gas combined atomization preparation method for iron-silicon-chromium-germanium-titanium alloy soft magnetic powder
A technology of combined water and gas atomization and soft magnetic powder, applied in the direction of magnetic materials, electrical components, magnetic objects, etc., can solve the problems of low tap density, low magnetic permeability, low loss resistance, etc., to improve tissue defects, Effect of improving permeability characteristics
Pending Publication Date: 2021-12-21
泉州市鑫航新材料科技有限公司
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[0004] The invention provides a water-air combined atomization preparation method of iron silicon chromium germanium titanium alloy soft magnetic powder to solve the defects of low tap density, low magnetic permeability and low loss resistance existing in the existing metal soft magnetic powder
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[0017] The specific implementation manner of the embodiment of the present invention is described below.
[0018] A method for preparing iron-silicon-chromium-germanium-titanium alloy soft magnetic powder combined with water and gas atomization, comprising the steps of:
[0019] 1) Add soft magnetic alloy powder raw materials containing iron, silicon, chromium, germanium and titanium into the medium frequency induction furnace, and use argon blowing protection to smelt to obtain alloy liquid.
[0020] Further, in the smelting process, gas bricks are pre-buried at the bottom of the prefabricated crucible, the furnace mouth of the intermediate frequency induction furnace is closed with a furnace cover, and argon is used as the furnace mouth protection gas. When smelting, first put iron, chromium and silicon into the intermediate frequency induction furnace in order to melt them completely. When the temperature reaches 1580-1600 degrees, start blowing argon at the bottom of the f...
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The invention relates to a water-gas combined atomization preparation method for iron-silicon-chromium-germanium-titanium alloy soft magnetic powder. The method comprises the following steps that (1) a soft magnetic alloy powder raw material containing iron, silicon, chromium, germanium and titanium is added into a medium-frequency induction furnace, and argon blowing protection smelting is performed to obtain alloy liquid; (2) under the nitrogen protection condition, the alloy liquid is poured into an atomizing tower in a negative-pressure environment, in the pouring process, two media of negative-pressure supersonic speed gas and high-pressure atomized water act on an alloy liquid column flow in sequence, the alloy liquid column flow is dispersed and torn into metal liquid drops under the action of the negative-pressure supersonic speed gas, and then through impact and cooling of the high-pressure atomized water, the metal liquid drops are further crushed and cooled into nearly-spherical alloy soft magnetic powder. Through the method, the iron-silicon-chromium-germanium-titanium alloy powder with high tap density, high magnetic conductivity and low loss can be prepared and can be widely applied as a powder raw material of an inductor device.
Description
technical field [0001] The invention relates to the technical field of soft magnetic alloy powder, in particular to a method for preparing soft magnetic powder of iron-silicon-chromium-germanium-titanium alloy combined atomization with water and air. Background technique [0002] At present, metal soft magnetic powder is usually mainly made of iron silicon chromium, which is made by chemical reaction method, melt atomization method, mechanical crushing method and point solution deposition method. Among them, alloy powder is prepared by melt atomization method It has the same chemical composition as the established molten alloy, and also has a typical rapid solidification structure, a wide range of alloy composition, good sphericity of powder shape, and wide particle size distribution. It is widely used in the production of metal soft magnetic powder. [0003] However, with the development of science and technology, the application of electronic components is becoming wider a...
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Login to View More IPC IPC(8): B22F9/08B22F1/00C22C38/28C22C38/34H01F1/147
CPCB22F9/082C22C38/34C22C38/002C22C38/28H01F1/14766B22F2009/084B22F2009/0824B22F2009/0828B22F2009/0848
Inventor 黄莹祥王冲
Owner 泉州市鑫航新材料科技有限公司