MX2017009016A - Lámina de acero chapado de alta resistencia que tiene excelentes propiedades de chapado, trabajabilidad y mayor resistencia a las fracturas, y método para su producción. - Google Patents

Lámina de acero chapado de alta resistencia que tiene excelentes propiedades de chapado, trabajabilidad y mayor resistencia a las fracturas, y método para su producción.

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Publication number
MX2017009016A
MX2017009016A MX2017009016A MX2017009016A MX2017009016A MX 2017009016 A MX2017009016 A MX 2017009016A MX 2017009016 A MX2017009016 A MX 2017009016A MX 2017009016 A MX2017009016 A MX 2017009016A MX 2017009016 A MX2017009016 A MX 2017009016A
Authority
MX
Mexico
Prior art keywords
steel sheet
sheet
base steel
resistance
layer
Prior art date
Application number
MX2017009016A
Other languages
English (en)
Inventor
Ikeda Muneaki
Nakaya Michiharu
Futamura Yuichi
Original Assignee
Kobe Steel Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority claimed from PCT/JP2016/050069 external-priority patent/WO2016111274A1/ja
Publication of MX2017009016A publication Critical patent/MX2017009016A/es

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/76—Adjusting the composition of the atmosphere
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    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
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    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
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    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
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    • C21D8/0221—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
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    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0257—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment with diffusion of elements, e.g. decarburising, nitriding
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    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
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    • C21D2211/009—Pearlite

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Abstract

Se proporciona una lámina de acero galvanizado por inmersión en caliente y una lámina de acero recocida galvanizada en caliente que tiene al menos 980 MPa y que tiene excelente capacidad de chapado; formabilidad en términos de flexibilidad y equilibrio entre resistencia y ductilidad; y resistencia retardada a la fractura. La lámina de acero chapada de alta resistencia de la presente invención tiene una capa chapada sobre la superficie de una lámina de acero base y contiene componentes de acero predeterminados. La lámina de acero incluye, en orden desde la interfaz de la lámina de acero base y la capa chapada hacia la lámina de acero base: una capa blanda que tiene una dureza Vickers que es 90% o menos de la dureza Vickers en una porción t/4 de la lámina de acero base, donde t es un espesor de lámina de la lámina de acero base; y una capa dura que contiene martensita y bainita, y ferrita en intervalos predeterminados. La profundidad promedio D de la capa blanda es de 20 µm o mayor, y la profundidad promedio d de una capa interna de óxido es de 4 µm o mayor y menor que D.
MX2017009016A 2015-01-09 2016-01-05 Lámina de acero chapado de alta resistencia que tiene excelentes propiedades de chapado, trabajabilidad y mayor resistencia a las fracturas, y método para su producción. MX2017009016A (es)

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JP2015159213A JP6093412B2 (ja) 2015-01-09 2015-08-11 めっき性、加工性、および耐遅れ破壊特性に優れた高強度めっき鋼板、並びにその製造方法
PCT/JP2016/050069 WO2016111274A1 (ja) 2015-01-09 2016-01-05 めっき性、加工性、および耐遅れ破壊特性に優れた高強度めっき鋼板、並びにその製造方法

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