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Alloying-based high-silicon thin steel strip and preparation method thereof

A high-silicon steel and alloying technology, applied in the field of high-silicon steel strips, can solve problems such as complex production processes, and achieve the effects of reducing impurity content, improving low-temperature ductility, and low cost

Active Publication Date: 2013-08-28
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the patent does not involve the influence of Cu element on high-silicon steel, and there are many kinds of added elements, and the production process is relatively complicated.

Method used

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  • Alloying-based high-silicon thin steel strip and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A high-silicon steel strip based on alloying and a preparation method thereof. The silicon content of the high silicon steel thin strip is 5.5-6.0wt%, the copper content is 0.05-0.4wt%, and the rest is iron and unavoidable impurities.

[0031] The preparation method based on the alloyed high-silicon steel thin strip is:

[0032] (1) raw material preparation: according to the chemical composition of the high-silicon steel strip, industrial pure iron, commercial silicon and pure copper are used as raw material ingredients;

[0033] (2) Smelting: The raw materials are smelted in an intermediate frequency vacuum induction furnace, and cast into slabs at 1300°C~1400°C;

[0034] (3) Forging: forging the billet into a slab with a thickness of 15~20mm at 750°C~900°C;

[0035] (4) Hot rolling: the slab is hot rolled into a thin strip with a thickness of 0.6~0.8mm at 700°C~900°C;

[0036] (5) Warm rolling: the thin strip is warm-rolled to 0.2-0.3mm at 150°C-400°C to obtain all...

Embodiment 2

[0039] A high-silicon steel strip based on alloying and a preparation method thereof. The silicon content of the high silicon steel strip is 5.8-6.5wt%, the copper content is 0.3-1.2wt%, and the rest is iron and unavoidable impurities.

[0040]The preparation method based on the alloyed high-silicon steel thin strip is:

[0041] (1) raw material preparation: according to the chemical composition of the high-silicon steel strip, industrial pure iron, commercial silicon and pure copper are used as raw material ingredients;

[0042] (2) Smelting: The raw materials are smelted in an intermediate frequency vacuum induction furnace, and cast into slabs at 1350°C~1450°C;

[0043] (3) Forging: forging the billet into a slab with a thickness of 15~20mm at 850°C~1000°C;

[0044] (4) Hot rolling: hot rolling the slab into a thin strip with a thickness of 0.6~0.8mm at 850°C~1000°C;

[0045] (5) Warm rolling: Warm rolling the thin strip to 0.2~0.3mm at 250°C~500°C to obtain alloyed high...

Embodiment 3

[0048] A high-silicon steel strip based on alloying and a preparation method thereof. The silicon content of the high silicon steel thin strip is 6.2-6.8wt%, the copper content is 1.0-1.8wt%, and the rest is iron and unavoidable impurities.

[0049] The preparation method based on the alloyed high-silicon steel thin strip is:

[0050] (1) raw material preparation: according to the chemical composition of the high-silicon steel strip, industrial pure iron, commercial silicon and pure copper are used as raw material ingredients;

[0051] (2) Smelting: The raw materials are smelted in an intermediate frequency vacuum induction furnace, and cast into slabs at 1450°C~1550°C;

[0052] (3) Forging: forging the billet into a slab with a thickness of 10~16mm under the condition of 1000℃~1150℃;

[0053] (4) Hot rolling: the slab is hot rolled into a thin strip with a thickness of 0.6~0.8mm at 950°C~1150°C;

[0054] (5) Warm rolling: Warm rolling the thin strip to 0.2~0.3mm at 350°C~6...

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Abstract

The invention relates to an alloying-based high-silicon thin steel strip and preparation method thereof. The technical scheme of the alloying-based high-silicon thin steel strip is as follows: the silicon content of the high-silicon thin steel strip is 5.5-7.0wt%, the copper content is 0.05-2.5wt%, and the rest is iron and other unavoidable impurity. The preparation method is as follows: using ingot iron, commercial silicon and pure copper as raw materials and burdening according to the chemical component of the high-silicon thin steel strip, smelting the raw materials in a medium-frequency vacuum induction furnace, casting at 1300-1650 DEG.C to form casting blank, forging the casting blank at 750-1250 DEG.C to form a slab with thickness of 10-20mm, hot-rolling the slab at 700-1250 DEG.C to form a thin strip with thickness of 0.6-0.8mm, and finally warm-rolling the thin strip at 150-750 DEG.C to 0.2-0.3mm. The alloying-based high-silicon thin steel strip provided by the invention is low in cost, simple in process and capable of utilizing the existing apparatus, the fragility of the prepared alloying-based high-silicon thin steel strip is obviously improved, the plasticity is obviously improved, the strip shape is good and the magnetic performance is excellent.

Description

technical field [0001] The invention belongs to the technical field of high-silicon steel strips, and relates to an alloy-based high-silicon steel strip and a preparation method thereof. technical background [0002] Silicon steel is a special iron-silicon alloy. Its carbon content is very low (generally less than 0.02wt%), and its silicon content is generally between 0.2wt% and 6.5wt%. It is mainly used to manufacture generators, engines, and transformers. As well as various iron cores in other electrical instruments, it is the most widely used soft magnetic alloy material. It occupies a very important position in soft magnetic materials. It is the basic material for the development of electric power and electronic information industries. It has low iron loss and High magnetic induction under strong magnetic field is a very important performance index of silicon steel. [0003] High silicon steel generally refers to 4.5~6.7wt% Si iron-silicon alloy, and usually refers to 6...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D8/12C22C38/16
Inventor 刘静程朝阳陈文思林希峰卢志红向志东
Owner WUHAN UNIV OF SCI & TECH
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