Production method of low temperature high magnetic induction grain oriented silicon steel
A technology of high magnetic induction orientation and production method, which is applied in the production field of low temperature high magnetic induction orientation silicon steel, can solve the problems of increasing process cost, etc., and achieve the effect of stabilizing the iron loss curve, reducing head warping and tail arcing
Active Publication Date: 2019-07-16
武汉钢铁有限公司
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Problems solved by technology
This method adopts high-temperature slab heating technology at 1350-1400°C, and adding Bi, Se, Sb and other elements into the steelmaking composition greatly increases the process cost
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[0038] In order to better explain the present invention, the main content of the present invention is further clarified below in conjunction with specific examples, but the content of the present invention is not limited to the following examples.
[0039] The chemical composition and mass percentage content of each embodiment steel of the present invention and comparative example steel are as shown in Table 1, and ensure that the chemical composition and mass percentage content of the same embodiment steel and comparative example steel are exactly the same;
[0040] Table 1 chemical composition and mass percentage content list
[0041]
[0042]
[0043] Vacuum smelting → continuous casting → hot rolling → pickling normalization → cold rolling → decarburization annealing → nitriding treatment → coating → high temperature annealing → Tensile leveling annealing → magnetic property measurement process flow operation, wherein, except for the high-temperature annealing proces...
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The invention discloses a production method for low-temperature high-magnetic-induction oriented silicon steel, and belongs to the technical field of iron and steel smelting. The production method comprises the following technological processes: vacuum smelting, continuous casting, hot rolling, acid pickling and normalizing, cold rolling, decarbonizing and annealing, nitriding treatment, coating,high-temperature annealing, stretching, flattening and annealing and magnetic property measurement. In high-temperature annealing, a primary heating section, a low insulating section, a secondary heating section, a high-temperature insulating section and a cooling section are successively arranged from low temperature to high temperature, the secondary heating section comprises an initial heatingsection, an insulating platform TS section and a later heating section, and the temperature TTS of the insulating platform TS section meets the following mathematical relationship: TTS= 890+ 20.4* P13+ 0.936* Alr. By the production method for the low-temperature high-magnetic-induction oriented silicon steel, iron loss fluctuation can be relieved.
Description
technical field [0001] The invention relates to a production method of oriented silicon steel, which belongs to the technical field of post-treatment of iron and steel in metallurgy, and in particular relates to a production method of low-temperature high magnetic induction oriented silicon steel. Background technique [0002] Low-temperature high-magnetic-induction oriented silicon steel is produced by reducing the heating temperature of the slab. Compared with high-temperature and high-magnetic-induction oriented silicon steel, the heating temperature of the low-temperature high-magnetic-induction oriented silicon steel is reduced to 1150-1200°C. During the hot-rolling heating process, The amount of oxidized slag, burning loss, and hot-rolled edge cracks are significantly reduced, so it has the advantages of high yield and low manufacturing cost for low-temperature high-magnetic-induction oriented silicon steel. [0003] However, the process control window of low-temperatu...
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IPC IPC(8): C21D8/12C21D1/26C22C38/02C22C38/04C22C38/06C22C38/16C22C38/20C22C38/34
CPCC21D1/26C21D8/1244C22C38/001C22C38/002C22C38/02C22C38/04C22C38/06C22C38/16C22C38/20C22C38/34
Inventor 骆新根郭小龙王若平高洋孙亮申明辉杨佳欣程祥威张文涵张献伟
Owner 武汉钢铁有限公司