Method for manufacturing high-silicon composite electrical steel narrow-band product

A manufacturing method and technology of electrical steel, applied to other manufacturing equipment/tools, turbines, engine components, etc., can solve problems such as low operating efficiency, high cost, and complicated production process operations, so as to achieve easy control of the process, increase product output, The effect of high production efficiency

Inactive Publication Date: 2018-01-26
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The silicon content in the electrical steel matrix reaches 6.5% to obtain the best comprehensive performance, but in industrial production, theoretically, the silicon content reaches 3.3%, and cold working cannot be carried out
For special-purpose high-silicon electrical steel materials, gas-phase silicon infiltration, cast-roll

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] [Example 1]

[0025] The chemical composition of electrical steel strip as the base material: C: 0.003%, Si: 2.5%, Al: 0.25%, Mn: 0.31%, P: 0.012%, S: 0.0025%, N: 0.0025%, the rest is Fe and Inevitable residual elements;

[0026] Substrate thickness: 1.00mm;

[0027] The high-silicon ferro-silicon powder has a particle size of 120 mesh and a silicon content of 6%.

[0028] Using core-spun wire preparation technology and equipment, the base material is wrapped with high-silicon iron powder to prepare high-silicon composite core-spun wire with a wire diameter of 10mm, and then the cold rolling mill rolls to prepare high-silicon composite core-spun flat belt, and the pressing force is controlled to 10T ,.

[0029] The high-silicon composite cored flat belt is heated and sintered in the furnace at a temperature of 1230°C, a protective atmosphere is 100% dry hydrogen, and the holding time is 1.5h.

[0030] The sintered high-silicon composite flat strip is rolled by a four-roll 200-ro...

Example Embodiment

[0032] [Example 2]

[0033] The chemical composition of electrical steel strip as the base material: C: 0.002%, Si: 3.2%, Al: 0.62%, Mn: 0.30%, P: 0.011%, S: 0.002%, N: 0.0021%, the rest is Fe and Inevitable residual elements;

[0034] Substrate thickness: 0.50mm;

[0035] The high silicon iron powder has a particle size of 130 mesh, a silicon content of 6.5%, an aluminum content of 1%, and a calcium content of 0.0054%.

[0036] Using core-spun wire preparation technology and equipment, the base material is wrapped with high-silicon iron powder to prepare high-silicon composite core-spun wire with a wire diameter of 15mm, and then the high-silicon composite core-spun flat belt is prepared by cold rolling mill. Control 15T.

[0037] The high-silicon composite cored ribbon is heated and sintered in a furnace at a temperature of 1310°C, a protective atmosphere of 100% dry hydrogen, and a holding time of 2.0h.

[0038] After sintering, the composite steel plate is rolled on a four-roll 200...

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PUM

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Abstract

The invention relates to a method for manufacturing a high-silicon composite electrical steel narrow-band product. The method comprises the following steps that 1), the silicon content of a high-silicon composite material base material ranges from 0.0% to 4.0%; 2), the silicon content of high-silicon iron powder is more than 3.5%, and the particle size of the high-silicon iron powder is more than60 meshes; 3), core-spun yarn preparation technology is adopted, and the high-silicon iron powder is warpped by the base material so as to produce a high-silicon composite core-spun yarn; and a high-silicon composite core-spun flat belt is prepared by adopting a mechanical compaction mode or a cold roll pressing mode; 4), the high-silicon composite core-spun flat belt is sent into a furnace for heating so as to integrally sintering the high-silicon iron powder and the base material; and 5), the technological process for producing the high-silicon composite electrical steel narrow-strip productcan be selectively provided with working processes of acid pickling, cold rolling, heat treatment, coating and finishing. According to the method for manufacturing the high-silicon composite electrical steel narrow-band product, industrial production of the high-silicon composite electrical steel narrow-band product can be achieved, operation is simple, the cost is low, the technology is easy tocontrol, the operation efficiency is high, and an obtained high-performance high-silicon steel soft magnetic material is suitable for the field of manufacturing of high, refined, sharp electromagnet cores.

Description

technical field [0001] The invention relates to the technical field of electrical steel production, in particular to a method for manufacturing a high-silicon composite electrical steel narrow strip product. Background technique [0002] The silicon content in the electrical steel matrix reaches 6.5% to obtain the best comprehensive performance, but in industrial production, theoretically, the silicon content reaches 3.3%, and cold working cannot be carried out. For special-purpose high-silicon electrical steel materials, gas-phase silicon infiltration, cast-rolled thin strips, amorphous materials, powder die-casting and rolling technologies are often used for small-scale production according to requirements, and industrial-scale production cannot be realized, and the production process is complicated and expensive. High, the process is not easy to control, and the operating efficiency is low. Contents of the invention [0003] The present invention provides a method for ...

Claims

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Application Information

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IPC IPC(8): B22F3/18B22F3/24B22F5/00B22F7/08C22C38/02C22C38/04C22C38/06
Inventor 高振宇张智义廖相巍陈春梅贾吉祥李亚东白云波胡洪旭王玉琦赵健
Owner ANGANG STEEL CO LTD
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