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Magnetic field annealing process for oriented silicon steel

A technology of magnetic field annealing and oriented silicon steel, applied in manufacturing tools, furnace types, furnaces, etc., can solve the problem of product grade, performance consistency and appearance need to be improved, grain boundary mobility recrystallization process delay, magnetic induction need to be further improved and other problems, to achieve the effect of changing the suspension, improving the magnetic properties, and reducing the iron loss of the product

Active Publication Date: 2021-06-22
BAOTOU WEIFENG ELECTROMAGNETIC MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

(2) The magnetic order induced by the magnetic field will hinder the diffusion of atoms, thereby reducing the mobility of the grain boundary. The reduction of the mobility of the grain boundary will lead to the delay of the recrystallization process, so that the original unfavorable orientation (that is, the non-Goss component ) get more development time
At present, the research on the influence of magnetic field on grain-oriented silicon steel needs to be further carried out, and the research on the recrystallization mechanism of magnetic field annealing also needs to be deepened.
[0005] The main problems of the current soft magnetic material oriented silicon steel are that the product grade, performance consistency and appearance need to be improved, the iron loss needs to be further reduced, and the magnetic induction needs to be further improved.

Method used

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  • Magnetic field annealing process for oriented silicon steel
  • Magnetic field annealing process for oriented silicon steel

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Preparation of the release agent: in parts by weight, the components of the release agent include MgO 8Mg(OH) 2 90 parts, 0.3 parts of citric acid, 2 parts of triammonium citrate, Na 2 B 4 o 7 5 parts, Sb 2 (SO 4 ) 3 2 parts, Al 2 o 3 3 parts, 2 parts of vinyltrimethoxysilane (A171), 3 parts of isopropyl triisostearyl titanate (TTS).

[0034] Preparation method: MgO 8Mg(OH) 2 Disperse in 5 times the mass of deionized water, stir at 5°C, add citric acid, triammonium citrate, Na 2 B 4 o 7 , Sb 2 (SO 4 ) 3 、Al 2 o 3 , vinyltrimethoxysilane (A171), isopropyl triisostearyl titanate (TTS), and stir evenly to make a coating solution for the isolation layer, and set aside.

[0035] A magnetic field annealing process for oriented silicon steel, comprising the following steps:

[0036] (1) After coating the release agent on the surface of the decarburization plate, nitrogen gas is introduced first, and then heated at a heating rate of 12°C / min under a nitroge...

Embodiment 2

[0043] Preparation of the release agent: in parts by weight, the components of the release agent include MgO 8Mg(OH) 2 80 parts, 0.1 parts of citric acid, 5 parts of triammonium citrate, Na 2 B 4 o 7 3 parts, Sb 2 (SO 4 ) 31 copy, Al 2 o 3 5 parts, 1 part of vinyltrimethoxysilane (A171), 1 part of isopropyl triisostearyl titanate (TTS).

[0044] Preparation method: MgO 8Mg(OH) 2 Disperse in 5 times the mass of deionized water, stir at 5°C, add citric acid, triammonium citrate, Na 2 B 4 o 7 , Sb 2 (SO 4 ) 3 、Al 2 o 3 , vinyltrimethoxysilane (A171), isopropyl triisostearyl titanate (TTS), and stir evenly to make a coating solution for the isolation layer, and set aside.

[0045] A magnetic field annealing process for oriented silicon steel, comprising the following steps:

[0046] (1) After coating the release agent on the surface of the decarburization plate, nitrogen gas is introduced first, and then heated at a heating rate of 10°C / min in a nitrogen atmosp...

Embodiment 3

[0053] Preparation of the release agent: in parts by weight, the components of the release agent include MgO 8Mg(OH) 2 100 parts, 0.5 parts of citric acid, 1 part of triammonium citrate, Na 2 B 4 o 7 8 parts, Sb 2 (SO 4 ) 3 5 parts, Al 2 o 3 1 part, 3 parts of vinyltrimethoxysilane (A171), 6 parts of isopropyl triisostearyl titanate (TTS).

[0054] Preparation method: MgO 8Mg(OH) 2 Disperse in 5 times the mass of deionized water, stir at 5°C, add citric acid, triammonium citrate, Na 2 B 4 o 7 , Sb 2 (SO 4 ) 3 、Al 2 o 3 , vinyltrimethoxysilane (A171), isopropyl triisostearyl titanate (TTS), and stir evenly to make a coating solution for the isolation layer, and set aside.

[0055] A magnetic field annealing process for oriented silicon steel, comprising the following steps:

[0056] (1) After coating the release agent on the surface of the decarburization plate, nitrogen gas is introduced first, and then heated at a heating rate of 15°C / min in a nitrogen at...

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Abstract

The invention belongs to the technical field of oriented silicon steel preparation, and particularly relates to an annealing process for soft magnetic material oriented silicon steel. The annealing process mainly comprises the following steps of, coating a separant, heating according to a certain rate, preserving heat, and cooling at a rate of 5-10 DEG C / min; and applying a constant magnetic field in the cooling process, and then continuing cooling. The annealing process can effectively reduce iron loss and improve magnetic induction intensity; and meanwhile, good corrosion resistance and mechanical performance are achieved.

Description

technical field [0001] The invention belongs to the technical field of preparation of oriented silicon steel, and in particular relates to a magnetic field annealing process of oriented silicon steel. Background technique [0002] Cold-rolled oriented silicon steel, also known as cold-rolled transformer steel, is an important ferrosilicon alloy used in the transformer (iron core) manufacturing industry. Its production process is complicated and its manufacturing technology is strict. It is mainly divided into ordinary grain-oriented silicon steel and high magnetic induction grain-oriented silicon steel. [0003] Soft magnetic materials refer to when the magnetization occurs at Hc not greater than 1000A / m, such materials are called soft magnets. Typical soft magnetic materials can achieve maximum magnetization with minimum external magnetic field. Soft magnetic materials are magnetic materials with low coercive force and high magnetic permeability. The silicon content is 0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/26C21D1/04C21D1/70C21D1/74C21D9/00
CPCC21D1/26C21D1/04C21D1/74C21D1/70C21D9/0081
Inventor 刘鹏程刘宝志张浩麻永林智月辉贺帅李守军邢淑清
Owner BAOTOU WEIFENG ELECTROMAGNETIC MATERIAL
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