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Strip continuously casted medium manganese steel, and manufacturing method thereof

A manufacturing method and technology for medium manganese steel, applied in the field of steel and its manufacturing, can solve problems such as martensite deformation, and achieve the effects of fewer production processes, high efficiency and simple process steps

Inactive Publication Date: 2018-03-13
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the prior art, because the hot-rolled structure of the medium manganese steel is full martensite, the martensite is deformed after cold rolling, and the grain size after annealing is generally submicron to micron, which is ultrafine grain size. granular tissue

Method used

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  • Strip continuously casted medium manganese steel, and manufacturing method thereof
  • Strip continuously casted medium manganese steel, and manufacturing method thereof
  • Strip continuously casted medium manganese steel, and manufacturing method thereof

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Embodiment Construction

[0046] The thin strip continuous casting medium manganese steel and its manufacturing method according to the present invention will be further explained and described in conjunction with the accompanying drawings and specific examples. However, the explanation and description do not constitute an improper limitation on the technical solution of the present invention.

[0047] Examples and comparative examples

[0048] The thin strip continuous casting medium manganese steel in the above-mentioned embodiment and the steel plate in the comparative example adopt the following steps to make:

[0049] (1) Smelting: adopt electric furnace smelting, control the mass percent of each chemical element as shown in Table 1;

[0050] (2) Twin-roll continuous casting: molten steel is poured into the melt formed by two relatively rotating water-cooled crystallization rolls and side sealing plates, and is cooled by the water-cooling crystallization rolls to form a casting belt;

[0051] (3)...

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PUM

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Abstract

The invention discloses strip continuously casted medium manganese steel. The strip continuously casted medium manganese steel comprises, by mass, 0.18 to 0.4% of C, 0.1 to 2.0% of Si, 7 to 12% of Mn,0.01 to 2% of Al, 0<P<=0.02%, and the balance Fe and other unavoidable impurities, wherein (-3.9C+11.2Mn+Si-1.9Al-41.4P)>=62, C, Si, Mn, Al, and P are used for representing the mass percentages of the corresponding elements. The invention also discloses a manufacturing method of the strip continuously casted medium manganese steel. The strip continuously casted medium manganese steel is high in strength and elongation percentage, and possesses excellent shaping performance.

Description

technical field [0001] The invention relates to a steel material and a manufacturing method thereof, in particular to a steel material for automobiles and a manufacturing method thereof. Background technique [0002] Automobile weight reduction is the main way to reduce fuel consumption, and it is also an effective countermeasure to reduce exhaust emissions. At the same time, with the stricter crash safety standards year by year, the use of ultra-high-strength steel has received widespread attention. However, the application of traditional ultra-high-strength steels is limited due to insufficient formability. Therefore, the third generation of automotive steel began to attract the attention of the automotive industry. [0003] The structure of the first generation of advanced high-strength steel is ferrite matrix plus low-temperature phase transformation products, such as bainite, martensite and carbon-rich austenite to increase the strength of steel grades. Typical steel ...

Claims

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Application Information

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IPC IPC(8): C22C38/04C22C38/02C22C38/06C22C33/04C21D8/02
CPCC22C38/04C21D8/0226C21D8/0263C22C33/04C22C38/02C22C38/06
Inventor 韩启航张玉龙王利于艳方园王成全
Owner BAOSHAN IRON & STEEL CO LTD