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Smelting method of corrosion-resistant soft magnetic alloy material

A technology of soft magnetic alloys and smelting methods, which is applied in the direction of magnetic materials, magnetic objects, and improvement of process efficiency. It can solve the problems of low production efficiency and low yield of corrosion-resistant soft magnetic alloy materials, and achieve good surface quality and improved One-time utilization rate and the effect of refining the organization

Active Publication Date: 2013-04-17
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a smelting method that can solve the problems of low yield and low production efficiency in the production of corrosion-resistant soft magnetic alloy materials, and improve the comprehensive performance of materials

Method used

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  • Smelting method of corrosion-resistant soft magnetic alloy material
  • Smelting method of corrosion-resistant soft magnetic alloy material

Examples

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example 1

[0011] A method for smelting a corrosion-resistant soft magnetic alloy material, characterized by comprising the following steps:

[0012] (1) Preparation of electrode rod

[0013] The ingredients of the soft magnetic alloy material are (percentage by weight): C0.009%, Cr17.7%, Si1.25%, Mn0.5%, Ti0.45%, Al0.4%, Fe balance, smelted by intermediate frequency furnace , cast into a round rod with a diameter of Ф90mm, the surface is sanded and finished, and used as a self-fusing electrode rod for electroslag remelting;

[0014] (2) Electroslag remelting

[0015] The ratio of slag material for electroslag remelting is: CaF 2 :CaO:Al 2 o 3 =75:5:20 (weight ratio), the slag is heated to a molten state, poured into a crystallizer with a diameter of Ф160mm, and the self-fusing electrode rod prepared in step (1) is slowly dropped into the molten slag, After arcing, adjust the voltage to 40V and the melting current to 4000A. After the self-fusing electrode rod starts to melt, drive t...

example 2

[0018] A method for smelting a corrosion-resistant soft magnetic alloy material, characterized by comprising the following steps:

[0019] (1) Preparation of electrode rod

[0020] The ingredients of the soft magnetic alloy material are (percentage by weight): C0.008%, Cr17.7%, Si1.5%, Mn0.5%, Ti0.45%, Fe balance, melted in a vacuum induction furnace, and cast into a diameter It is a round rod of Ф170mm, after the surface is sanded and finished, it is used as a self-fusing electrode rod for electroslag remelting;

[0021] (2) Electroslag remelting

[0022] The ratio of slag material for electroslag remelting is: CaF 2 :CaO:Al 2 o 3 =72:3:25 (weight ratio), the slag is heated to a molten state, poured into a crystallizer with a diameter of Ф280mm, and the self-fusing electrode rod prepared in step (1) is slowly dropped into the molten slag, After arcing, adjust the voltage to 52V and the melting current to 6000A, turn on the ultrasonic generator, and drive the self-fusing ...

example 1 and example 2

[0027] Table 2 Example 1 and Example 2 Magnetic properties and corrosion resistance of soft magnetic alloy materials

[0028]

[0029]

[0030] Remarks: The comparison sample is a soft magnetic alloy material smelted in an intermediate frequency furnace and not remelted by this method (the composition formula is the same as that of Example 1).

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Abstract

The invention discloses a smelting method of a corrosion-resistant soft magnetic alloy material, and can solve the problems of low yield and low production efficiency of the produced corrosion-resistant soft magnetic alloy material and the like and also can improve the comprehensive performance of the material. The invention adopts the main scheme that a cast ingot for smelting an intermediate-frequency furnace or a vacuum induction furnace or other equipment is subjected to electroslag re-melting to obtain a high-quality heat processing blank. A formula for slag subjected to electroslag re-melting is calcium fluoride: calcium oxide: aluminum oxide=(65-80):(1-5):(15-25); and the filling ratio of 0.5-0.6 is adopted during re-melting. The smelting method has the following advantages that: the segregation is reduced, the organization is fined, the contents of P and S elements are reduced, the contents of inclusions are reduced, and the distribution of the inclusions is improved, so that the forming performance (the yield is improved by about 5-10 percent) and the use performance of materials are improved; and the produced blank has good surface quality and needs not to be peeled off, so that the material one-time utilization ratio (about 5-10 percent) and the production efficiency (about 5-10 percent) can be improved.

Description

technical field [0001] The invention relates to the field of soft magnetic alloy materials, in particular to a method for smelting corrosion-resistant soft magnetic alloy materials. Background technique [0002] Corrosion-resistant soft magnetic alloys and their processing technologies are important materials and key technologies for the development of corrosion-resistant electromagnetic components. This technology is used in the fuel (gas) injection electromagnetic components in the electronic control technology of automobile engines and the solenoid valve components of the flameout protectors of gas water heaters and gas stoves in household appliances. The magnetic properties of soft magnetic alloys are very important for improving the control accuracy and safety of electromagnetic components. Performance, reliability, and extended service life are of great significance. [0003] Soft magnetic alloy is a kind of alloy with high magnetic permeability and low coercive force...

Claims

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Application Information

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IPC IPC(8): C22C38/14C22C33/04B22D23/10C22B9/16H01F1/147
CPCY02P10/25
Inventor 刘筱薇王东哲仵海东魏捍东何曲波雷亚
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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