A kind of non-oriented electrical steel for high-efficiency motor and its production method

An oriented electrical steel, high-efficiency technology, applied in the field of non-oriented electrical steel for high-efficiency motors and production, can solve the problems of easy nodulation and low melting point, etc.
CN104294185BInactive Publication Date: 2016-06-22武汉钢铁有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
武汉钢铁有限公司
Publication Date
2016-06-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to non-oriented electrical steel for an efficient motor. The non-oriented electrical steel for the efficient motor is prepared from the chemical components in percentage by weight: less than or equal to 0.0030% of C, 1.9-2.1% of Si, 0.28-0.32% of Mn, 0.10-0.60% of Al, 0.01-0.06% of P, less than or equal to 0.0050% of S, 0.10-0.30% of Cu, 0.02-0.05% of Sb and less than or equal to 0.0030% of N. The production process comprises the following steps: smelting; cogging; repeatedly forging to obtain square billets; heating; hot-rolling; normalizing; pickling; cold-rolling; and thermally heating. By controlling the total weight of main alloy elements (Si+Al+Mn) and auxiliary elements (Cu+P+Sb), favorable effects of elements in physical metallurgy are fully exerted. By researching the composite effect of elements (Cu+P+Sb) on silicon steel organization structure and magnetism, partial (Si+Al) is replaced by (Cu+P). On the one hand, the inflection time of a normalized plate can be improved and on the other hand, the punching property of a finished plate is improved. The non-oriented electrical steel for the efficient motor excellent in magnetic property and good in punching effect is developed.
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Description

technical field

[0001] The invention relates to a non-oriented electrical steel and a production method, in particular to a non-oriented electrical steel for high-efficiency motors and a production method. Background technique

[0002] Electrical steel is the most important metal functional material for the manufacture of motors, transformers, ballast cores and various electrical components, and is an indispensable core material for the development of industries such as electric power, household appliances, telecommunications, and national defense.

[0003] The traditional methods to improve motor efficiency are usually: ①Use more copper and iron materials to reduce the magnetic flux density; ②Use thin gauge, low iron loss, good shape, and insulating coated silicon steel sheets to reduce no-load loss.

[0004] The performance requirements of high-efficiency motors for non-oriented electrical steel mainly include the following aspects.

[0005] Low iron loss, high magnetic...

Claims

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