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Low-hardness 50W800 electrical steel and production method

A production method and technology of electrical steel, applied in the field of iron and steel, can solve the problems of high hardness of annealed electrical steel

Active Publication Date: 2020-11-20
湖南华菱涟钢特种新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The main purpose of the present invention is to provide a low-hardness 50W800 electrical steel and its production method, aiming to solve the technical problem that the existing bell annealing process mainly produces semi-process annealed electrical steel with high hardness

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[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0020] The application provides that the application provides a low-hardness 50W800 electrical steel on the one hand, the constituent elements include: C≤0.005%, 0.45%≤Si≤0.60%, 0.25%≤Mn≤0.40%, 0.03%≤ P≤0.05%, S≤0.06%, 0.15%≤Al≤0.35%, 0.045%≤Sb≤0.060%, N≤0.0030%, Ti≤0.0030%, and the rest are iron and unavoidable impurity elements.

[0021] The composition design of this application follows three principles: ultra-low carbon and pure steel. Considering the fact that the hardness is relatively high and the magnetic induction sensitivity decreases when the bell-type f...

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Abstract

The invention provides low-hardness 50W800 electrical steel which consists of the following elements in percentage by mass: less than or equal to 0.005% of C, greater than or equal to 0.45% and less than or equal to 0.60% of Si, greater than or equal to 0.25% and less than or equal to 0.40% of Mn, greater than or equal to 0.15% and less than or equal to 0.35% of Al, greater than or equal to 0.03%and less than or equal to 0.05% of P, less than or equal to 0.06% of S, greater than or equal to 0.045% and less than or equal to 0.060% of Sb, less than or equal to 0.0030% of N, less than or equal to 0.0030% of Ti, and the balance of iron and inevitable impurity elements. Through reasonable component designs, micro-alloy Sb element is added while content of Si and Al is regulated, a corresponding cover type furnace annealing temperature and corresponding annealing time can be matched to realize equiaxial annealing of crystalline grains, so that electrical steel is reduced to reasonable hardness, hardness and magnetic performance requirements of full-process electrical steel products are met, and therefore, the all-process non-oriented electrical steel is produced through the cover type annealing process.

Description

technical field [0001] The invention relates to the field of iron and steel, in particular to low-hardness 50W800 electrical steel and a production method. Background technique [0002] Non-oriented electrical steel is mostly used in parts such as electric rotors, compressors and generators. At present, domestic non-oriented electrical steel is produced by continuous annealing coating process production line, which has excellent product performance but relatively high production cost. With the continuous improvement of domestic environmental protection requirements and the increasing competition in the industry, there is a relatively strong demand for cost reduction. Compared with the continuous annealing process, the bell annealing process has a relatively obvious cost advantage and has no coating, and the environmental protection advantage is obvious. The existing bell annealing process is mainly for the production of semi-process annealed electrical steel. Due to its hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/14C21D8/12
CPCC21D8/1233C21D8/1272C22C38/004C22C38/02C22C38/04C22C38/06C22C38/14
Inventor 田飞谢凯李光辉郑庆吴泽交李江吴高亮李慈颖陈振文宋伟李春辉
Owner 湖南华菱涟钢特种新材料有限公司
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