Purpose of oriented electrical steel


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Basic information about oriented electrical steel: Electrical steel, also known as silicon steel sheet, is an indispensable and important soft magnetic alloy in the power, electronics, and military industries. Oriented electrical steel is also the largest production of metal functional materials, mainly used as the iron core of various motors, generators, and transformers. Its production process is complex, and its manufacturing technology is strict. Foreign production technologies are protected in the form of patents, which are regarded as the life of the enterprise. The manufacturing technology and product quality of electrical steel plates are one of the important indicators of a country's special steel production and technological development level. The quantity, quality, specifications, and grades of cold rolled electrical steel in China cannot meet the needs of the development of the energy (power) industry. Compared with Japan, there is a significant gap in production technology, equipment, management, and scientific research.

Key words:

Oriented silicon steel | Non-oriented silicon steel | Galvanized coils

  • Description
  • Parameters
    • Commodity name: Purpose of oriented electrical steel
    • Commodity ID: 1084908104752713728

    Basic information about oriented electrical steel: Electrical steel, also known as silicon steel sheet, is an indispensable and important soft magnetic alloy in the power, electronics, and military industries. Oriented electrical steel is also the largest production of metal functional materials, mainly used as the iron core of various motors, generators, and transformers. Its production process is complex, and its manufacturing technology is strict. Foreign production technologies are protected in the form of patents, which are regarded as the life of the enterprise. The manufacturing technology and product quality of electrical steel plates are one of the important indicators of a country's special steel production and technological development level. The quantity, quality, specifications, and grades of cold rolled electrical steel in China cannot meet the needs of the development of the energy (power) industry. Compared with Japan, there is a significant gap in production technology, equipment, management, and scientific research.

    Basic information about oriented electrical steel: Electrical steel, also known as silicon steel sheet, is an indispensable and important soft magnetic alloy in the power, electronics, and military industries. Oriented electrical steel is also the largest production of metal functional materials, mainly used as the iron core of various motors, generators, and transformers. Its production process is complex, and its manufacturing technology is strict. Foreign production technologies are protected in the form of patents, which are regarded as the life of the enterprise. The manufacturing technology and product quality of electrical steel plates are one of the important indicators of a country's special steel production and technological development level. The quantity, quality, specifications, and grades of cold rolled electrical steel in China cannot meet the needs of the development of the energy (power) industry. Compared with Japan, there is a significant gap in production technology, equipment, management, and scientific research.

    Overview of oriented electrical steel: The total output of electrical steel worldwide is approximately 7 million tons. Currently, especially in recent years, with the rapid development of China's power and electrical industry, the demand for silicon steel sheets in China has increased rapidly. In 2004, the consumption has accounted for almost half of the world's silicon steel sheet production, leading to a period of rapid development in China's silicon steel production, but still unable to meet domestic demand. In 2004, 1.64 million tons of silicon steel sheets were imported. Electrical steel has a history of over a hundred years, including electrical steel with Si<0.5% and silicon steel with Si content of 0.5~6.5%. It is mainly used as iron cores for various motors, transformers, and ballasts, and is an indispensable and important soft magnetic alloy in power, electronics, and military industries. Electrical steel is the most widely used in magnetic materials and is also an important metal functional material for energy conservation. The manufacturing process and equipment of electrical steel, especially oriented silicon steel, are complex, with strict composition control, long manufacturing processes, and many factors that affect performance. Therefore, the quality of oriented silicon steel products is often regarded as an important indicator of a country's special steel manufacturing technology level, and has earned the reputation of "artistic product" in special steel.

    Overview of oriented electrical steel

    Oriented electrical steel also called grain oriented flat-rolled electrical steel, which refers to cold-rolled electrical steel that contains 2.9%-3.5% Si and possesses the crystal structure of certain regularity and direction. Oriented electrical steel as an essential magnetically soft material of the power industry is mainly applied to the transformer industry, rectifier industry, reactor industry and large motor industry. According to the release of the Ministry of Commerce, dumping occurs to oriented electrical steel products imported from Japan, South Korea and the EU, which diminishes the oriented electrical steel industry of China. It is decided that anti-dumping duty will be levied for these oriented electrical steel products imported from these countries and regions as of July 23. The tax rate is 37.3%-46.3%. The enforcement period will be five years.


    Purpose of oriented electrical steel
    Oriented electrical steel is an essential magnetically soft material of the power industry. It is mainly applied to rectifier industry, transformer industry, reactor industry and large motor industry and used for fabrication of the iron core of various transformers.

    Production process of oriented electrical steel
    Oriented electrical steel: Ore---Iron-making---Steel-making---Hot rolling---Pickling---Cold rolling---Annealing---Grain oriented flat-rolled electrical steel (oriented electrical steel)
    Cold-rolled coils: Ore---Iron-making---Steel-making---Hot rolling---Pickling---Cold rolling---Annealing---Cold-rolled coils
    The key to production of silicon steel of the Goss texture by using oriented electrical steel is the utilization of secondary recrystallization. To realize secondary recrystallization, it is usually required that normal grain growth inhibitor should be added into alloy, such as MnS, etc. The grain growth inhibitor must be able to be distributed inside the alloy matrix dispersedly in the mixed form. When secondary recrystallization occurs, normal growth of matrix crystal will be inhibited effectively. It is also required that it can be eliminated conveniently in the last high temperature annealing to prevent deterioration of the magnetic property of the product. In secondary recrystallization, the oriented nuclei of secondary grain growth are mainly generated through the proper cold rolling process and recrystallization annealing. Since the phase change can damage grain orientation, it is critically important to maintain the single phase during heat treatment.
    Grain oriented flat-rolled electrical steel sheets can be classified into oriented silicon steel sheets, non-grain oriented flat-rolled electrical steel sheets and dw material. Non-grain oriented flat-rolled electrical steel sheets for motors are usually 0.35 mm and 0.50 mm thick and are mainly supplied in coils. Their silicon content is usually low; the thickness of grain oriented flat-rolled electrical steel sheets for transformers is usually 0.20 mm, 0.30 mm, 0.35 mm and 0.50 mm. Their silicon content is usually high.

    Application fields of oriented electrical steel

    Cibao

    Large transformers

    Cibao

    Nuclear power plants

    Cibao

    Hydropower stations

     

    Key words:
    • 取向电工钢
  • oriented electrical steel 23Q85 0.23*1030*C

    Cibao Sheet Metal

    Large transformers、Nuclear power plants、Hydropower stations

    oriented electrical steel 23Q90 0.23*1000*C

    Cibao Sheet Metal

    Large transformers、Nuclear power plants、Hydropower stations

    oriented electrical steel 23Q95 0.23*1010*C

    Cibao Sheet Metal

    Large transformers、Nuclear power plants、Hydropower stations

    oriented electrical steel 27Q100 0.23*1030*C

    Cibao Sheet Metal

    Large transformers、Nuclear power plants、Hydropower stations

    oriented electrical steel 27Q105 0.23*1020*C

    Cibao Sheet Metal

    Large transformers、Nuclear power plants、Hydropower stations

    oriented electrical steel 27Q110 0.23*1020*C

    Cibao Sheet Metal

    Large transformers、Nuclear power plants、Hydropower stations

    oriented electrical steel 27Q120 0.23*1000*C

    Cibao Sheet Metal

    Large transformers、Nuclear power plants、Hydropower stations

    oriented electrical steel 23Q85 0.23*1010*C

    Cibao Sheet Metal

    Large transformers、Nuclear power plants、Hydropower stations

    oriented electrical steel 23Q90 0.23*1000*C

    Cibao Sheet Metal

    Large transformers、Nuclear power plants、Hydropower stations

    oriented electrical steel 23Q95 0.23*1020*C

    Cibao Sheet Metal

    Large transformers、Nuclear power plants、Hydropower stations

    oriented electrical steel 27Q100 0.23*1040*C

    Cibao Sheet Metal

    Large transformers、Nuclear power plants、Hydropower stations

    oriented electrical steel 27Q105 0.23*1030*C

    Cibao Sheet Metal

    Large transformers、Nuclear power plants、Hydropower stations

    oriented electrical steel 27Q110 0.23*1000*C

    Cibao Sheet Metal

    Large transformers、Nuclear power plants、Hydropower stations

     

    Spot raw materials are sold for supply of oriented electrical steel, which is directly supplied by manufacturers and widely used in large-scale transformers, nuclear power plants, hydropower stations, and military projects.

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