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Transformer silicon steel sheet and preparation method thereof

A technology for silicon steel sheets and transformers, applied in coatings and other directions, can solve the problems of high preparation cost, insufficient control of hysteresis loss, etc., and achieve the effects of excellent mechanical properties, improved service life and performance, and high hardness.

Inactive Publication Date: 2018-08-28
HEFEI SHANGQIANG ELECTRIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the silicon steel sheet has the function of controlling and reducing the iron loss, there are still deficiencies in controlling the hysteresis loss, and the preparation cost is high, which limits the performance and service life of the transformer to a certain extent. Therefore, the performance of the transformer core remains to be determined. promote

Method used

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  • Transformer silicon steel sheet and preparation method thereof
  • Transformer silicon steel sheet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The above-mentioned preparation method of a transformer silicon steel sheet is carried out according to the following steps:

[0033] Step 1: Put industrial raw materials into the melting furnace for smelting to obtain molten steel, blow argon outside the furnace and feed wire for refining after being released from the furnace, adjust and control the content of chemical components in the molten steel as shown in Table 1 above, where the argon pressure 0.4MPa, the inner diameter of the pressure pipe is 10mm, and the argon blowing time is 30min;

[0034] Step 2: Cast the molten steel into rough silicon steel sheets, place the rough silicon steel sheets on a hot rolling mill and roll them into semi-finished silicon steel sheets. The hot rolling of semi-finished silicon steel sheets includes the following four processes:

[0035] (1) Heating and heat preservation: keep the semi-finished silicon steel sheet at a temperature of 370°C for 1.5h; then raise the temperature to 58...

Embodiment 2

[0043] The above-mentioned preparation method of a transformer silicon steel sheet is carried out according to the following steps:

[0044] Step 1: Put industrial raw materials into the melting furnace for smelting to obtain molten steel, blow argon outside the furnace and feed wire for refining after being released from the furnace, adjust and control the content of chemical components in the molten steel as shown in Table 1 above, where the argon pressure The pressure is 0.4MPa, the inner diameter of the pressure pipe is 10mm, and the argon blowing time is 32min;

[0045] Step 2: Cast the molten steel into rough silicon steel sheets, place the rough silicon steel sheets on a hot rolling mill and roll them into semi-finished silicon steel sheets. The hot rolling of semi-finished silicon steel sheets includes the following four processes:

[0046] (1) Heating and heat preservation: heat the semi-finished silicon steel sheet at a temperature of 375°C for 1.5h; then raise the t...

Embodiment 3

[0054] The above-mentioned preparation method of a transformer silicon steel sheet is carried out according to the following steps:

[0055] Step 1: Put industrial raw materials into the melting furnace for smelting to obtain molten steel, blow argon outside the furnace and feed wire for refining after being released from the furnace, adjust and control the content of chemical components in the molten steel as shown in Table 1 above, and the argon pressure is 0.4 MPa, the inner diameter of the pressure pipe is 11mm, and the argon blowing time is 35min;

[0056] Step 2: Cast the molten steel into rough silicon steel sheets, place the rough silicon steel sheets on a hot rolling mill and roll them into semi-finished silicon steel sheets. The hot rolling of semi-finished silicon steel sheets includes the following four processes:

[0057] (1) Heating and heat preservation: heat the semi-finished silicon steel sheet at a temperature of 380°C for 2 hours; then raise the temperature ...

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Abstract

The invention discloses a transformer silicon steel sheet and a preparation method thereof and relates to the technical field of transformer silicon steel sheet manufacturing. The silicon steel sheetcomprises the following components: C, Si, Mn, Cr, Ni, Al, Mo, V, Co, B, S, P, N and Fe. The preparation method of the transformer silicon steel sheet comprises the following steps: melting industrialraw materials, casting, annealing, performing acid pickling, and performing surface coating, so as to obtain the transformer silicon steel sheet. The transformer silicon steel sheet disclosed by theinvention is excellent in mechanical property, low in iron loss, high in magnetic induction strength, good in insulating property and long in service life.

Description

technical field [0001] The invention relates to the technical field of transformer silicon steel sheet manufacturing, in particular to a transformer silicon steel sheet and a preparation method thereof. Background technique [0002] The transformer is made according to the principle of electromagnetic induction. There are two windings on the closed iron core, one is the primary winding and the other is the secondary winding. During the working process of the transformer, its power loss occurs not only in the resistance of the coil, but also in the iron core magnetized by the alternating current. People usually refer to the power loss in the iron core as "iron loss", and the causes of iron loss are mainly divided into hysteresis loss and eddy current loss. The hysteresis loss is the energy loss caused by the hysteresis phenomenon in the magnetization process of the iron core material, while the eddy current loss is generated in the plane perpendicular to the direction of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/04C22C38/54C22C38/06C22C38/52C22C38/44C22C38/02C22C38/46C21D8/12C21D1/26C09D4/06C09D5/25C09D7/61
CPCC22C38/04C09D4/06C09D5/00C21D1/26C21D8/1222C21D8/1261C22C38/06C22C38/34C22C38/44C22C38/46C22C38/52C22C38/54
Inventor 程劲松
Owner HEFEI SHANGQIANG ELECTRIC TECH CO LTD
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