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Grain oriented electrical steel having excellent magnetic properties and manufacturing method for the same

A technology of electrical steel plate and grain orientation, which is applied in metal rolling and other directions, can solve the problems of low productivity and achieve the effect of solving low productivity

Active Publication Date: 2013-02-13
浦项股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0037] Furthermore, another aspect of the present invention provides a method of manufacturing a grain-oriented electrical steel sheet, which solves the problem of low productivity that is easily caused in the process of manufacturing an electrical steel sheet having excellent properties according to an exemplary embodiment of the present invention.

Method used

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  • Grain oriented electrical steel having excellent magnetic properties and manufacturing method for the same
  • Grain oriented electrical steel having excellent magnetic properties and manufacturing method for the same
  • Grain oriented electrical steel having excellent magnetic properties and manufacturing method for the same

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Embodiment

[0133] Changes in iron loss with respect to the content of Sn, Sb and P added

[0134]A grain-oriented electrical steel sheet is used here, which contains by weight: 3.26% of Si, 0.055% of C, 0.12% of Mn, 0.026% of soluble Al, 0.0042% of N, 0.0045% of S, as shown in the following table The various contents of Sn, Sb and P listed in 1 to 4, and the balance of iron and other unavoidable impurities. Then, the slab of electrical steel sheet was heated at a temperature of 1170° C. for 210 minutes while re-dissolved N was present at a content of 25 ppm, and then hot-rolled to form a hot-rolled steel sheet with a thickness of 2.3 mm. Then, the hot-rolled steel sheet was heated to 1120° C., maintained at 920° C. for 90 seconds, then rapidly cooled in water, pickled, and cold-rolled to finally form a cold-rolled steel sheet with a thickness of 0.30 mm. The decarburization and nitriding steps were carried out simultaneously by introducing a mixture of 75% hydrogen and 25% nitrogen wi...

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Abstract

There are provided a grain-oriented electrical steel sheet having excellent magnetic properties and a method for manufacturing the same. More particularly, there are provided a grain-oriented electrical steel sheet whose magnetic properties is remarkably improved to the extent that is unexpected in similar component systems in the prior art by adjusting contents of the components and improving the manufacturing method and, a method for manufacturing the same. The grain-oriented electrical steel sheet essentially comprises 0.Q3 to 0.07% by weight of Sn, 0.01 to 0.5% by weight of Sb, and 0.01 to 0.05% by weight of P.

Description

technical field [0001] The present invention relates to a grain-oriented electrical steel sheet with excellent magnetic properties and a manufacturing method thereof, more particularly, to a kind of whose magnetic properties can be significantly improved to those in the prior art by adjusting the content of components and improving the manufacturing method Grain oriented electrical steel sheet to an unforeseeable degree in a similar compositional system, and method for its manufacture. Background technique [0002] Electrical steel sheets refer to silicon steel sheets used to manufacture electrical machinery or equipment. Electrical steel sheets can be broadly classified into grain-oriented electrical steel sheets and non-oriented electrical steel sheets. Specifically, the grain-oriented electrical steel sheet is composed of grains having a so-called Goss texture (Goss texture), as discovered and proposed by Goss, in which the crystal plane orientation of the grains is {110...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D8/12C22C38/00B21B3/00
CPCC21D2211/004C21D8/1255C22C38/008C22C38/60C21D8/1272C21D2201/05
Inventor 朱炯暾朴钟泰金昌洙韩奎锡金在宽徐进旭林才洙金柄久权玟锡崔攇曹朴顺福
Owner 浦项股份有限公司