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Non-oriented silicon steel for high-power-factor motor and production method

A Technology of High Power Factor, Oriented Silicon Steel

Active Publication Date: 2016-08-24
武汉钢铁有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0016] Judging from the above literature, there is no understanding that improving the power factor of the motor can improve the efficiency of the motor and the corresponding technical measures

Method used

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  • Non-oriented silicon steel for high-power-factor motor and production method
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  • Non-oriented silicon steel for high-power-factor motor and production method

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Embodiment Construction

[0061] The present invention is described in detail below:

[0062] Table 1 is the composition value list of each embodiment of the present invention and comparative example;

[0063] Table 2 is the main process parameter list of each embodiment of the present invention and comparative example;

[0064] Table 3 is a list of performance detection and motor performance simulation of each embodiment of the present invention and comparative examples.

[0065] Each embodiment of the present invention carries out according to the following steps:

[0066] 1) Smelting and continuous casting into blanks by using pure steel mode;

[0067] 2) Heating the slab, controlling its heating rate to 6-10°C / min, soaking temperature at 1100-1160°C, soaking time at 30-60min;

[0068] 3) Carry out hot rolling, control the rough rolling temperature at 1000-1050°C; control the finish rolling entrance temperature at 950-1000°C, control the final rolling temperature at 750-850°C, and control the thi...

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Abstract

Non-oriented silicon steel for a high-power-factor motor is prepared from, by weight, 0-0.0020% of C, 1.70-1.90% of Si, 0.10-0.20% of Mn, 0-0.05% of P, 0-0.0030% of S, 0.25-0.35% of Al, 0.05-0.50% of Cr and 0-0.0020% of N. A production method includes the steps that pure steel is smelted into ingots; the ingots are heated; hot rolling is conducted; coiling is conducted; normalizing is carried out; acid pickling is conducted; cold rolling is conducted; finished products are annealed at the N2+H2 atmosphere; cooling, coating and finishing are conducted through conventional methods. The thickness of the silicon steel is 0.50 mm, iron loss P1.5 / 50 is smaller than or equal to 3.3 W / kg, and B5000 is larger than or equal to 1.74 T. A motor simulation result shows that the silicon steel can be used for manufacturing the high-power-factor motor, relatively high motor efficiency is obtained, and components are simple.

Description

technical field [0001] The invention relates to a non-oriented silicon steel and a production method thereof, in particular to a non-oriented silicon steel for high power factor motors and a production method thereof. Background technique [0002] In recent years, environmental issues such as global warming and air pollution and energy shortages have attracted worldwide attention. In order to curb the continuous warming of the earth, it is necessary to improve energy efficiency and reduce emissions in terms of CO 2 major greenhouse gases. In my country, motors consume about 60-70% of the total domestic electricity, especially industrial motors consume more than 70% of electricity. Relevant reports show that the current market share of high-efficiency motors in my country only accounts for about 10% of the entire motor market. For this reason, improving the performance and efficiency of motors is a long-term and arduous task, which requires the non-oriented electrical stee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/18C22C38/02C22C38/04C22C38/06C21D8/12
CPCC21D8/1222C21D8/1233C21D8/1272C22C38/02C22C38/04C22C38/06C22C38/18
Inventor 冯大军石文敏杜光梁陈圣林杨光吕黎万政武欧阳页先曹亢
Owner 武汉钢铁有限公司
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