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High-manganese and high-aluminium non-magnetic steel plate manufactured through 50t medium-frequency induction furnace and manufacturing method thereof

A manufacturing method and induction furnace technology are applied in the field of non-magnetic steel manufacturing, which can solve the problems of easy formation of coarse equiaxed crystals, and achieve the effect of improving yield

Active Publication Date: 2018-12-28
WUHAN IRON & STEEL GRP ECHENG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The Chinese patent with the application number 201510547982.0 announced "a high-equiaxed high-manganese steel ingot and its smelting method", which involves the use of a 200kg vacuum induction furnace to smelt a high-manganese steel ingot. The ingot contains Mn17.5%~18.5% , Als5.8%~6.2%, to solve the problem that coarse equiaxed crystals are easy to form during the solidification process, but the induction furnace is only 200kg, and a large amount of manganese and aluminum alloy are added at a time, and only rely on the shaking furnace to melt, and the temperature and composition must reach It is difficult to be uniform enough

Method used

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  • High-manganese and high-aluminium non-magnetic steel plate manufactured through 50t medium-frequency induction furnace and manufacturing method thereof
  • High-manganese and high-aluminium non-magnetic steel plate manufactured through 50t medium-frequency induction furnace and manufacturing method thereof
  • High-manganese and high-aluminium non-magnetic steel plate manufactured through 50t medium-frequency induction furnace and manufacturing method thereof

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Effect test

Embodiment 1

[0051] The components of the high-manganese and high-aluminum non-magnetic steel plate produced by the 50t intermediate frequency induction furnace and their weight percentages are: C: 0.25%, Si: 0.25%, Mn: 15%, P≤0.020%, S≤0.010 %, Al: 2%, Nb: 0.02%, V: 0.015%, Ti: 0.014%, Cu: 0.012%, and the rest are Fe and unavoidable impurities.

[0052] Described a kind of 50t intermediate frequency induction furnace makes the manufacturing method step of high manganese high aluminum non-magnetic steel plate as follows:

[0053] (1) Load high-manganese steel scrap, lime and other raw materials into a 50t medium-frequency induction furnace for heating and smelting. Metal manganese or electrolytic manganese is baked at a high temperature of 400°C for 4 hours before being added to the induction furnace, and the baked metal is added within 20 minutes before tapping. Manganese or electrolytic manganese, after heating and melting, the steel is tapped, and the manganese content is controlled at ...

Embodiment 2

[0059] The components of the high-manganese and high-aluminum non-magnetic steel plate produced by the 50t intermediate frequency induction furnace and their weight percentages are: C: 0.15%, Si: 0.35%, Mn: 16%, P≤0.020%, S≤0.010 %, Al: 3.5%, Nb: 0.03%, V: 0.02%, Ti: 0.015%, Cu: 0.014%, and the rest are Fe and unavoidable impurities.

[0060] Described a kind of 50t intermediate frequency induction furnace makes the manufacturing method step of high manganese high aluminum non-magnetic steel plate as follows:

[0061] (1) Load high-manganese steel scrap, lime and other raw materials into a 50t medium-frequency induction furnace for heating and smelting. Metal manganese or electrolytic manganese is baked at a high temperature of 420°C for 5 hours before being added to the induction furnace, and the baked metal is added within 16 minutes before tapping. Manganese or electrolytic manganese, after heating and melting, the steel is tapped, and the manganese content is controlled at...

Embodiment 3

[0067] The components of the high-manganese and high-aluminum non-magnetic steel sheet produced by the 50t intermediate frequency induction furnace and their weight percentages are: C: 0.08%, Si: 0.40%, Mn: 20%, P≤0.020%, S≤0.010 %, Al: 4%, Nb: 0.04%, V: 0.03%, Ti: 0.018%, Cu: 0.016%, and the rest are Fe and unavoidable impurities.

[0068] Described a kind of 50t intermediate frequency induction furnace makes the manufacturing method step of high manganese high aluminum non-magnetic steel plate as follows:

[0069] (1) Load high-manganese steel scrap, lime and other raw materials into a 50t medium-frequency induction furnace for heating and smelting. Metal manganese or electrolytic manganese is baked at a high temperature of 430°C for 3 hours before being added to the induction furnace, and the baked metal is added within 28 minutes before tapping. Manganese or electrolytic manganese, after heating and melting, the steel is tapped, and the manganese content is controlled at 1...

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Abstract

The invention discloses a high-manganese and high-aluminium non-magnetic steel plate manufactured through a 50t medium-frequency induction furnace and a manufacturing method thereof. The high-manganese and high-aluminium non-magnetic steel plate smelted through the 50t medium-frequency induction furnace comprises the components, by weight, of 0.08-0.25% of C, 0.25-0.40% of Si, 15-20% of Mn, no more than 0.020% of P, no more than 0.010% of S, 2-4% of Al, 0.02-0.04% of Nb, 0.015-0.030% of V, 0.014-0.018% of Ti, 0.012-0.016% of Cu, and the balance Fe and inevitable impurities. The yield strengthRp0.2 of the steel plate at the normal temperature is larger than or equal to 340 MPa, the tensile strength Rm is larger than or equal to 600 MPa, the percentage elongation after fracture A is 45%-50%, and the percentage reduction of area Z is larger than or equal to 65%. The high-manganese and high-aluminium non-magnetic steel plate is uniform in chemical component and microscopic structure, excellent in mechanical property, low in relative magnetic permeability, low in internal stress, and good in plate shape.

Description

technical field [0001] The invention relates to the technical field of non-magnetic steel manufacturing, in particular to a high-manganese-high-aluminum non-magnetic steel plate produced by a 50t medium-frequency induction furnace and a manufacturing method thereof. Background technique [0002] As a functional steel material, non-magnetic steel is a non-magnetic steel material that basically does not produce magnetic induction under the action of a magnetic field. Its room temperature structure is required to be stable austenite. Non-magnetic stainless steel and non-magnetic structural steel, non-magnetic structural steel mostly adopts Fe-Mn series non-magnetic steel, the manganese content can reach more than 17%, and the aluminum content can reach 2%~4%. A large amount of manganese and Aluminum, with low density, will float on the surface of molten steel, and it is difficult to melt evenly, resulting in uneven temperature and composition, which will eventually affect produ...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/12C22C38/14C22C38/16C22C33/06C21C7/00
CPCC21C7/0006C22C33/06C22C38/02C22C38/04C22C38/06C22C38/12C22C38/14C22C38/16Y02P10/20
Inventor 何亚元尹云洋习天辉杜涛
Owner WUHAN IRON & STEEL GRP ECHENG IRON & STEEL CO LTD
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