Non-oriented electric thin steel sheet with ultrahigh magnetic-flux density and productive method thereof
A magnetic flux density and flux density technology, applied in the direction of magnetic core/yoke, transformer/inductor core, circuit, etc., can solve the problems that non-oriented electrical thin steel plate cannot be produced, and cannot meet the requirements of non-oriented electrical thin steel plate. To achieve the effects of simplified packaging, strong attraction and anti-corrosion
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Embodiment 1
[0175] The slab for non-oriented electrical steel sheet containing the chemical composition shown in Table 1 is heated by a conventional method and processed by hot rolling into a thin steel sheet with a thickness of 2.7 mm. Then, the thin steel sheet was pickled and cold-rolled into a thin steel sheet with a thickness of 0.50 mm. The thin steel sheet was annealed in a continuous annealing furnace at 750°C for 20 seconds. Then, the thin steel plate was cut into Epstein specimens, and the common magnetic properties were measured. The chemical composition according to the present invention and the chemical composition of the comparative example are shown in Table 1, and the measurement results of the magnetic properties are shown in Table 2.
[0176] It is obvious from Tables 1 and 2 that by adding an appropriate amount of Ni and processing the thin steel sheet under appropriate process conditions, a non-oriented electrical thin steel sheet with ultra-high magnetic flux density can ...
Embodiment 2
[0181] The slab for non-oriented electrical steel sheet containing the chemical composition shown in Table 3 is heated by a conventional method and processed by hot rolling into a steel sheet with a thickness of 2.5 mm. Then, the thin steel sheet was pickled and cold-rolled into a thin steel sheet with a thickness of 0.50 mm. The thin steel sheet was annealed in a continuous annealing furnace at 750°C for 30 seconds. Then, the thin steel plate was cut into Epstein specimens, and its magnetic properties were measured. When measuring the magnetic flux density, in addition to the measurement of common samples cut out in the L and C directions, by measuring the magnetic flux density B measured on the Epstein sample cut out only in the L direction 50 L and the magnetic flux density B measured on the Epstein sample cut only in the C direction 50 Difference between C B 50 LC, to study the anisotropy of magnetic flux density.
[0182] The chemical composition according to the present inve...
Embodiment 3
[0188]Using the product sample with the chemical composition of No. 9 in Example 2, the samples for transmission X-ray measurement and reflected X-ray measurement were taken from the part located in the center of the thickness of the thin plate and one-fifth of the thickness from the surface of the thin plate. For the depth part, prepare (100) all-pole diagrams.
[0189] figure 2 Shows the (100) all-pole diagram of the sample taken from the layer located in the center of the thickness of the thin plate, image 3 Shows a (100) all-pole diagram of a sample taken from a layer located at one-fifth of the depth of the sheet thickness from the surface.
[0190] The intensities at the positions of α=90°, β=90°, and 270° are expressed as a ratio of 0.5 or higher to the random intensity, which is characteristic of these figures. Due to this feature, it is possible to obtain a non-oriented electrical steel sheet with ultra-high magnetic flux density, that is, the magnetic flux density B un...
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Abstract
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