Technique method for manufacturing oriented silicon steel

A process method and technology of oriented silicon steel, applied in the direction of manufacturing tools, metal material coating process, coating, etc., can solve the problems of high brittleness of silicon steel sheets, cracked edges, impact on cost, etc., and achieve smooth surface of oriented silicon steel, prevent improvement, The effect of preventing eddy current

Active Publication Date: 2017-05-31
NINGBO YINGZHAN PRECISION SHEET
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing process for producing oriented silicon steel uses a temperature as high as 1380 degrees during continuous casting, which will lead to overheating during processing, resulting in excessive energy consumption and excessive brittleness of the obtained silicon steel sheet , which brings great difficulties to cold rolling, frequent accidents of edge cracking and fracture, and adhesion between strip steel layers is also prone to occur, which affects production efficiency and cost, resulting in low magnetic properties of oriented silicon steel , and very unstable, low quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: Step a: Coil the hard-rolled coil to the conveying equipment for uncoiling into strip steel, and weld the tail end of the previous hard-rolled coil and the front end of the next hard-rolled coil together to facilitate its uninterrupted delivery , but also equipped with a buffer device to prevent the need to stop during welding and cause waste of cost;

[0025] Step b: cleaning the surface of the steel strip with lye prepared from sodium hydroxide and sodium carbonate or trisodium phosphate to achieve a better cleaning effect;

[0026] Step c: Put the strip steel after cleaning into the electrolytic solution for electrolytic treatment, so as to achieve the purpose of degreasing;

[0027] Step d: the degreased steel strip is sprayed and cleaned with water, and then dried to dry the strip steel;

[0028] Step e: The dried steel strip enters the decarburization annealing furnace area, and is first heated to 600°C through the radiant tube heating section for p...

Embodiment 2

[0037]Embodiment 2: Step a: Coiling the hard rolled coil to the conveying equipment for decoiling into strip steel, and welding the tail end of the previous hard rolled coil and the front end of the next hard rolled coil together so as to facilitate its uninterrupted delivery , but also equipped with a buffer device to prevent the need to stop during welding and cause waste of cost;

[0038] Step b: cleaning the surface of the steel strip with lye prepared from sodium hydroxide and sodium carbonate or trisodium phosphate to achieve a better cleaning effect;

[0039] Step c: Put the strip steel after cleaning into the electrolytic solution for electrolytic treatment, so as to achieve the purpose of degreasing;

[0040] Step d: the degreased steel strip is sprayed and cleaned with water, and then dried;

[0041] Step e: The dried steel strip enters the decarburization annealing furnace area, and is first heated to 750°C by the radiant tube heating section for preheating, and th...

Embodiment 3

[0050] Embodiment 3: Step a: Coil the hard-rolled coil to the conveying equipment for uncoiling into strip steel, and weld the tail end of the previous hard-rolled coil and the front end of the next hard-rolled coil together to facilitate its uninterrupted delivery , but also equipped with a buffer device to prevent the need to stop during welding and cause waste of cost;

[0051] Step b: cleaning the surface of the steel strip with lye prepared from sodium hydroxide and sodium carbonate or trisodium phosphate to achieve a better cleaning effect;

[0052] Step c: Put the strip steel after cleaning into the electrolytic solution for electrolytic treatment, so as to achieve the purpose of degreasing;

[0053] Step d: the degreased steel strip is sprayed and cleaned with water, and then dried;

[0054] Step e: The dried steel strip enters the decarburization annealing furnace area, and is first heated to 700°C by the radiant tube heating section for preheating, and then heated t...

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Abstract

The invention discloses a technique method for manufacturing oriented silicon steel. A full hard coil is subjected to decarburizing annealing so as to reduce the band steel carbon content; aluminum nitride is formed through nitrizing, and crystalline grains of steel are restrained from growing up; a magnesium silicate film is formed through magnesium oxide coating, and bonding between band steel is prevented; a magnesium oxide base layer and purified steel are formed through high-temperature annealing secondary recrystallization; and the band steel is subjected to insulation layer coating for eddy prevention and heat stretching leveling treatment, and the plate shape is more level. The obtained oriented silicon steel is more level in surface, stable in quality and high in percent of pass.

Description

technical field [0001] The invention relates to the technical field of oriented silicon steel, in particular to a process for making oriented silicon steel. Background technique [0002] Silicon steel is an indispensable and important soft magnetic alloy in the electric power and electronics industry, and is also an important energy-saving metal functional material; among them, oriented silicon steel, which is mainly used in the transformer industry, is called the "top product" of the global steel industry, and more The reputation of "special steel artwork"; silicon steel uses core loss (iron loss) and magnetic induction (magnetic induction) as the magnetic guarantee value of the product, how to better improve the magnetic properties of grain-oriented silicon steel (including iron loss and magnetic induction), Making it have higher magnetic permeability, lower magnetostriction and core loss has become one of the hot topics in the world; while the production process of grain-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D3/04C21D1/74C23C8/26C21D1/70C21D1/26C21D9/52C23F17/00
CPCC21D1/26C21D1/70C21D1/74C21D3/04C21D9/52C23C8/26C23F17/00
Inventor 李观军王华汛但堂中潘光武邓俊许凯文
Owner NINGBO YINGZHAN PRECISION SHEET
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