High-strength vanadium-containing high-manganese non-magnetic steel and production method thereof

A production method and high-strength technology, applied in the field of iron and steel smelting, can solve problems such as increasing production costs, and achieve the effects of high production efficiency, significant economic and social benefits, and low cost

Inactive Publication Date: 2014-10-22
武汉钢铁有限公司
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Problems solved by technology

The disadvantage of this patented technology is that a relatively high content of N

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  • High-strength vanadium-containing high-manganese non-magnetic steel and production method thereof
  • High-strength vanadium-containing high-manganese non-magnetic steel and production method thereof

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[0021] The high-strength vanadium-containing high-manganese non-magnetic steel and its production method of the present invention will be further described in detail below in conjunction with specific examples:

[0022] The chemical composition of the high-strength vanadium-containing high-manganese non-magnetic steel selected in Examples 1-9 is shown in Table 1 in terms of weight percentage (the remainder is Fe and unavoidable impurities).

[0023] Table 1 Chemical composition (wt%) of the steel of each embodiment of the present invention

[0024] Example

[0025] Table 1 lists the specific chemical composition of the 9 groups of high-strength non-magnetic steels of the present invention that can be used in transformers, generators, nuclear power and other projects. The production method of the above-mentioned high-strength vanadium-containing high-manganese non-magnetic steels includes the following steps: It is carried out according to the usual pure steel process, including el...

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Abstract

The invention discloses high-strength vanadium-containing high-manganese non-magnetic steel and a production method thereof. The steel comprises the following chemical components by weight: 0.15 to 0.25% of C, 0.2 to 0.4% of Si, 18 to 20% of Mn, no more than 0.015% of P, no more than 0.010% of S, 0.5 to 1.0% of V, with the balance being Fe and unavoidable impurities. The production method is carried out according to common technology for clean steel and comprises the following steps: electric furnace smelting; ladle furnace refining; vacuum treatment; bottom-pouring die casting; casting blank heating; rolling; tempering; and air cooling. The steel has yield strength of no less than 500 MPa, tensile strength of no less than 700 MPa, elongation percentage A of no less than 40% and relative permeability mu of no more than 1.05 and is applicable to manufacturing of equipment like transformers and generators. Meanwhile, the steel has the advantages of simple chemical components, low cost, easy production and operation, high production efficiency and substantial economic benefits and social benefits.

Description

technical field [0001] The invention belongs to the technical field of iron and steel smelting, and in particular relates to a high-strength vanadium-containing and high-manganese non-magnetic steel suitable for transformers, generators, nuclear power and other projects and a production method thereof. Background technique [0002] Non-magnetic steel refers to steel that does not produce magnetic induction in a magnetic field, its structure is mainly austenite, and its magnetic permeability μ≤1.29×10 -6 H / m. Non-magnetic steel has a wide range of uses, and it is required in automatic control systems, precision instruments, telecommunications and motors, as well as in many military fields. With the progress of society and the development of economy, the demand for high performance non-magnetic steel is increasing day by day. At present, the widely used non-magnetic steel is mainly 20Mn23AlV series. Its magnetic permeability is relatively low, but its yield strength is low, ...

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Application Information

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IPC IPC(8): C22C38/12C21D8/02
Inventor 宋畅杜明陈颜堂郭斌李安平马玉喜陶军晖徐进桥欧阳珉路梅荣利
Owner 武汉钢铁有限公司
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