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Manganese steel strip having an increased phosphorus content and process for producing the same

A manganese steel, weight percentage technology, applied in the field of austenitic manganese steel strip and manufacturing austenitic manganese steel strip, can solve problems such as affecting mechanical properties

Inactive Publication Date: 2011-10-12
FOSTER ALPINE STEEL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is also known that there are other effects such as the appearance of slip bands that can affect the mechanical properties

Method used

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  • Manganese steel strip having an increased phosphorus content and process for producing the same
  • Manganese steel strip having an increased phosphorus content and process for producing the same
  • Manganese steel strip having an increased phosphorus content and process for producing the same

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Experimental program
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Embodiment Construction

[0045] The different possibilities for producing the manganese steel according to the invention are firstly explained by way of example.

[0046] In a first option, pig iron is produced in a blast furnace or by a smelting reduction process such as the Corex or Finex process. Pig iron can also be prepared by the Tecnored method. For example, the pig iron is then converted to steel in an oxygen top-blown process (eg LD (Linz-Donawitz) / BOF (Bottom Oxygen Furnace) process). Vacuum degassing (such as the Ruhrstahl-Heraeus (RH) process) can be performed prior to steel casting, and a ladle furnace can be used to heat and alloy the molten metal. In the second option, an electric arc furnace (EAF) is used to prepare the steel and an AOD converter is used to decarbonize the liquid steel, which may be particularly suitable for manganese steels. Likewise, ladle furnaces can be used to heat and alloy the molten metal before casting steel.

[0047] The steel thus produced can be further ...

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Abstract

A hot-rolled austenitic manganese steel strip having a chemical composition in percent by weight of 0.4% = C = 1.2%, 12.0% = Mn = 25.0%, P = 0.01% and Al = 0.05% has a product of elongation at break in % and tensile strength in MPa of above 65 000 MPa%, in particular above 70 000 MPa%. A cold-rolled austenitic manganese steel strip having the same chemical composition achieves a product of elongation at break in % and tensile strength in MPa of above 75 000 MPa%, in particular above 80 000 MPa%.

Description

technical field [0001] The present invention relates to an austenitic manganese steel strip and a method for manufacturing the austenitic manganese steel strip. The invention also relates to manganese steel sheets comprising reshaped steel sheet parts, in particular stretch formed or deep drawn steel sheet parts. Background technique [0002] Manganese austenitics are particularly tough and ductile lightweight structural steels. The potential for weight reduction due to increased strength makes manganese austenite a high potential material in the automotive industry. This is because a lighter vehicle body enables reduced fuel consumption, and high levels of elongation and stability are important for the preparation of body parts and their performance under impact conditions. [0003] TRIP (Transformation Induced Plasticity) steels are known and are increasingly being used in the automotive industry. High-alloy TRIP steels have high tensile strengths up to values ​​greater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D6/00C21D8/02C22C38/04
CPCC21D6/005C21D8/0205C21D2211/001C22C38/04C21D6/00C21D8/02
Inventor 赖因霍尔德·施奈德卢多维克·萨梅克恩诺·阿伦霍尔兹克莱门斯·姆拉泽克
Owner FOSTER ALPINE STEEL LTD
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