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Production method of oriented silicon steel

A technology of oriented silicon steel and production method, which is applied in the field of metal material preparation and processing, can solve the problems of poor magnetic properties and rolling performance, achieve the effect of reasonable allocation of cooling speed and prolonging the normalization time

Inactive Publication Date: 2018-03-09
BEIJING SHOUGANG CO LTD
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Problems solved by technology

[0005] The embodiment of the present invention provides a method for producing oriented silicon steel, which is used to improve the technical problems of poor magnetic properties and rolling performance in the method of producing oriented silicon steel through a two-stage normalization process in the prior art

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  • Production method of oriented silicon steel

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Embodiment Construction

[0028] The embodiment of the present invention provides a production method of grain-oriented silicon steel, which is used to improve the technical problems of poor magnetic properties and rolling performance in the method of producing grain-oriented silicon steel through a two-stage normalization process in the prior art.

[0029] In order to solve the technical problems in the above-mentioned prior art, the general idea of ​​the technical solution provided by the embodiment of the present application is as follows:

[0030] A method for producing grain-oriented silicon steel, comprising: smelting molten iron, and obtaining a slab through secondary refining and continuous casting, wherein the weight percentage of the components of the slab is as follows: 0.03%<C≤0.08%, 2.6% ≤Si≤4%, 0.07%≤Mn≤0.2%, 0.005%≤S≤0.01%, 0.01%≤Als≤0.03%, 0.004%≤N≤0.01%, 0.02%≤Sn≤0.2%, the rest are Fe and Impurities; hot rolling the slab to obtain a hot-rolled plate; normalizing the hot-rolled plate to...

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Abstract

An embodiment of the invention discloses a production method of oriented silicon steel. The method includes: smelting molten iron, and performing secondary refining and continuous casting to obtain casting blanks; performing hot rolling on the casting blanks to obtain hot-rolled plates; normalizing the hot-rolled plates to obtain steel plates; performing cold rolling on the steel plates, and performing decarburization annealing on the cold-rolled steel plates; performing nitriding on the steel plates after the decarburization annealing; coating the steel plates after the nitriding with isolating layers, performing high-temperature annealing to obtain high-temperature-annealed plates; coating the surfaces of the high-temperature-annealed plates with insulating coating layers, and performingstretching, flattening and annealing to obtain the oriented silicon steel. By the production method, the technical problem that a method using a two-stage normalizing process to produce the orientedsilicon steel is poor in magnetic performance and rolling performance in the prior art is improved.

Description

technical field [0001] The invention relates to the technical field of metal material preparation and processing, in particular to a method for producing oriented silicon steel. Background technique [0002] With the development of large-scale transformers and energy-saving distribution transformer markets, the requirements for the magnetic properties of raw material oriented electrical steel are getting higher and higher, and the market competition in this field is becoming more and more fierce. Sensitive orientation is an important direction for silicon steel production enterprises. [0003] In the production of oriented silicon steel, the microstructure and texture of the hot-rolled sheet along the thickness direction are not uniform, which has a major impact on the development of secondary recrystallization of oriented silicon steel. Usually, normalized annealing controls the precipitation of a certain amount of fine ALN, and at the same time makes The structure of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/04C22C38/02C22C38/04C22C38/06C21D8/12
CPCC22C33/04C21D8/1222C21D8/1233C21D8/1244C21D8/1255C21D8/1283C22C38/001C22C38/008C22C38/02C22C38/04C22C38/06
Inventor 赵鹏飞黎先浩刘建辉龚坚李泽琳王现辉赵松山司良英
Owner BEIJING SHOUGANG CO LTD
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