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A method for preparing high-silicon non-oriented silicon steel

A technology of oriented silicon steel and high silicon, which is applied in the field of preparing high silicon non-oriented silicon steel, can solve the problems of destroying orderly arrangement, few reports, no process reports, etc., and achieves strong practicability, low cost, and simple and easy operation Effect

Active Publication Date: 2016-06-29
WUXI GUANGXU STEEL SHEET
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the temperature range of intensely adjusting the ordered arrangement of atoms, the intermediate warm rolling greater than 75% of the total rolling amount can destroy the ordered arrangement and improve the plasticity, but the additional process of this process becomes very complicated
In 1988, Japan Steel Tube Company used rolling technology to produce high-silicon silicon steel sheets, but there were no detailed process reports, and there were few follow-up reports

Method used

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  • A method for preparing high-silicon non-oriented silicon steel

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) The surface of ordinary cold-rolled low-carbon steel is polished, washed with water, ultrasonically cleaned, activated, and the surface is pre-plated with a layer of pure iron. The plating temperature is maintained at 40±1℃, and the cathode current density is 2A / dm. 2 , The plating time is 1800 seconds. Electroplating is performed under 45Khz ultrasonic conditions.

[0028] (2) A layer of Fe-Si alloy layer is deposited on the surface of the pre-plated steel sheet. Add 10g / L of nano-Si powder to the iron plating solution, and composite electrodeposition under the same temperature, current density and electroplating time under 45Khz ultrasonic conditions.

[0029] (3) Heat the electroplated steel plate in a hydrogen atmosphere furnace for 2 hours, control the heating rate at 10-20°C / min, raise the temperature to 700°C, hold time for 2 hours, and cool down with the furnace. The silicon content of the alloy layer obtained by the EDS and XPS testing of the sample after the a...

Embodiment 2

[0031] (1) The surface of ordinary cold-rolled low-carbon steel is polished, washed with water, ultrasonically cleaned, activated, and the surface is pre-plated with a layer of pure iron. The plating temperature is maintained at 40±1℃, and the cathode current density is 2A / dm. 2 , The plating time is 1800 seconds. Electroplating is performed under 45Khz ultrasonic conditions.

[0032] (2) A layer of Fe-Si alloy layer is deposited on the surface of the pre-plated steel sheet. Add 30g / L of nano-Si powder to the iron plating solution, and composite electrodeposition under the same temperature, current density and electroplating time under 45Khz ultrasonic conditions.

[0033] (3) Heat the electroplated steel plate in a hydrogen atmosphere furnace for 2 hours, control the heating rate at 10-20°C / min, raise the temperature to 700°C, hold time for 2 hours, and cool down with the furnace. The silicon content of the alloy layer obtained by the EDS and XPS detection of the sample after the...

Embodiment 3

[0035] (1) The surface of ordinary cold-rolled low-carbon steel is polished, washed with water, ultrasonically cleaned, activated, and the surface is pre-plated with a layer of pure iron. The plating temperature is maintained at 40±1℃, and the cathode current density is 2A / dm. 2 , The plating time is 3600 seconds. Electroplating is performed under 45Khz ultrasonic conditions.

[0036] (2) A layer of Fe-Si alloy layer is deposited on the surface of the pre-plated steel sheet. Add 30g / L of nano-Si powder to the iron plating solution, and composite electrodeposition under the same temperature, current density and electroplating time under 45Khz ultrasonic conditions.

[0037] (3) Heat the electroplated steel plate in a hydrogen atmosphere furnace for 2 hours, control the heating rate at 10-20°C / min, raise the temperature to 700°C, hold time for 2 hours, and cool down with the furnace. The silicon content of the alloy layer obtained by the EDS and XPS detection of the sample after the...

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Abstract

The invention relates to a method for preparing high-silicon non-oriented silicon steel. The method comprises the following steps of 1) preplating pure iron on a low-carbon steel surface; 2) depositing a Fe-Si alloy layer on the pre-plated steel plate surface; and 3) performing a heat treatment on the electroplated steel plate in a hydrogen atmosphere furnace. The method disclosed by the invention has the beneficial effects that the alloy layer and the low-carbon steel surface can be combined relatively well in a high-temperature environment and in the hydrogen atmosphere, so that the silicon content of the surface is controllable and capable of achieving 6.3-13.3%, and then a high-silicon silicon steel material with an excellent magnetic performance is obtained; the method is low in cost, simple and practicable to operate, and strong in practicability.

Description

Technical field [0001] The invention relates to the technical field of magnetic material preparation and silicon alloying on the surface of steel, in particular to a method for preparing high-silicon non-oriented silicon steel. Background technique [0002] Silicon steel, also known as electrical steel, is an important magnetic material used in the power, electronics and telecommunications industries to manufacture generators, motors, transformers, relays, transformers, and other electrical instruments. Studies have shown that the silicon content in silicon steel sheet has a great influence on its product characteristics (such as magnetic induction and iron loss). As the silicon content increases, the resistivity of the silicon steel sheet increases, and the eddy current loss decreases, thereby exhibiting excellent magnetic properties at higher frequencies. When the mass fraction of silicon increases to 6.5%, it has the best soft magnetic properties, such as low mid- and high-fr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D5/50C25D5/10C21D1/74
Inventor 张洁清赵仁南
Owner WUXI GUANGXU STEEL SHEET
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