A kind of preparation method of iron-based nanocrystalline alloy

A technology of iron-based nanocrystals and alloys, which is applied in the field of metallurgy, can solve problems such as low production efficiency, long time consumption, and large energy consumption, and achieve the effects of improving production efficiency, improving purity, and saving energy

Active Publication Date: 2016-05-11
QINGDAO YUNLU ADVANCED MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the preparation method of nanocrystalline alloy strips in the prior art includes two smelting steps, namely the first smelting metal raw material step and the remelting step of the master alloy ingot. The process is relatively long, so it consumes a lot of energy. , time-consuming and low production efficiency defects
However, in the prior art, there is no report of simplifying the smelting steps and preparing qualified iron-based nanocrystalline alloys.

Method used

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Examples

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Effect test

preparation example Construction

[0026] In the preparation method of the iron-based nanocrystalline alloy provided in this embodiment, the metal raw materials used are commercially pure iron, ferroboron, metal silicon, electrolytic copper and ferroniobium.

[0027] It includes the following steps,

[0028] Step 1, smelting step: smelting metal raw materials into high-temperature molten steel; this smelting step also includes the operation of removing impurities; the composition and weight content of the covering agent used in the operation of removing impurities are: SiO 2 25-40wt%, Al 2 o 3 20-30wt%, CaO30-40wt%, Na 2 O3-5wt%, CaF 2 3-5wt%;

[0029] This step adopts the operation mode of step-by-step smelting of metal raw materials, step-by-step removal of impurities and perfect argon protection.

[0030] The specific operation process of this step is:

[0031] a: Add the covering agent to the bottom of the intermediate frequency furnace, and then spread 20% metal silicon, and then add 50% pure iron, a...

Embodiment 1

[0037] Example 1. Using 200kg of metal raw material to prepare a thin strip of 8mm, using the method provided in this embodiment, the smelting time is 1.5h, the three-stream pouring, the strip is sprayed for 40min, the strip thickness is 25±2μm, and the strip with qualified physical size and performance is produced 170kg, the recovery rate is 85%.

Embodiment 2

[0038] Example 2, using 500kg of metal raw materials to prepare a thin strip of 50mm, using the method provided in this embodiment, the smelting time is 2 hours, single-flow pouring, spraying for 50 minutes, and the thickness of the strip is 30±2μm, and the physical size and performance of qualified strips are produced 450kg, the recovery rate is 90%.

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Abstract

The invention belongs to the technical field of metallurgy, and specifically relates to a method for preparing an iron-based nanocrystalline alloy; it includes the following steps: Step 1, a smelting step: smelting metal raw materials into high-temperature molten steel; and Step 2, a strip-making step: spraying the high-temperature molten steel Made into strips; the present invention omits the steps of smelting master alloy steel ingots and remelting again, and only includes one smelting step to prepare nanocrystalline master alloys, which has the characteristics of simplified steps, energy saving, shortened working hours, and improved production efficiency.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a preparation method of an iron-based nanocrystalline alloy. Background technique [0002] At present, amorphous soft magnetic materials have excellent comprehensive properties, such as high strength, high hardness, wear resistance, corrosion resistance, high magnetic permeability and low loss, etc., have been developed rapidly in recent years and have been applied in many fields, for example, in electrical On the one hand, the alloy strip has replaced most of the ferrite and Permalloy; on the other hand, the country is promoting amorphous transformers on a large scale. [0003] The iron-based nanocrystalline alloy is mainly made of Fe element, and a small amount of Nb, Cu, Si, and B elements are added, and it is prepared by rapid solidification process. Common raw materials for preparing iron-based nanocrystalline alloys are industrial pure iron, metal silicon, e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C33/06
Inventor 李楠姜桂君
Owner QINGDAO YUNLU ADVANCED MATERIALS TECH CO LTD
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