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MX2018007347A - Amina de acero galvanizada por inmersion en caliente de alta resistencia que tiene excelente calidad de superficie y soldabilidad por puntos, y metodo de manufactura para la misma. - Google Patents

Amina de acero galvanizada por inmersion en caliente de alta resistencia que tiene excelente calidad de superficie y soldabilidad por puntos, y metodo de manufactura para la misma.

Info

Publication number
MX2018007347A
MX2018007347A MX2018007347A MX2018007347A MX2018007347A MX 2018007347 A MX2018007347 A MX 2018007347A MX 2018007347 A MX2018007347 A MX 2018007347A MX 2018007347 A MX2018007347 A MX 2018007347A MX 2018007347 A MX2018007347 A MX 2018007347A
Authority
MX
Mexico
Prior art keywords
steel sheet
less
dip galvanized
galvanized steel
strength hot
Prior art date
Application number
MX2018007347A
Other languages
English (en)
Inventor
Soo KIM Myung-
Jeong Park Ii-
Cheol KANG Ki-
Original Assignee
Posco
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 Posco filed Critical Posco
Publication of MX2018007347A publication Critical patent/MX2018007347A/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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0273—Final recrystallisation annealing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/013—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/043—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/18—Layered products comprising a layer of metal comprising iron or steel
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
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    • 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
    • C—CHEMISTRY; METALLURGY
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    • C—CHEMISTRY; METALLURGY
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    • C—CHEMISTRY; METALLURGY
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    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C—CHEMISTRY; METALLURGY
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    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
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    • C—CHEMISTRY; METALLURGY
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    • C—CHEMISTRY; METALLURGY
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    • C—CHEMISTRY; METALLURGY
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    • C—CHEMISTRY; METALLURGY
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    • C—CHEMISTRY; METALLURGY
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    • C—CHEMISTRY; METALLURGY
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    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
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  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
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Abstract

La presente invención se relaciona a una lámina de acero galvanizada por inmersión en caliente para ser utilizada para un miembro de estructura de carrocería de vehículo y los similares y, más específicamente, a una lámina de acero galvanizada por inmersión en caliente de alta resistencia que tiene excelente calidad de superficie y soldabilidad por puntos, y a un método de manufactura para la misma. Particularmente, la presente invención se relaciona a una lámina de acero galvanizada por inmersión en caliente de alta resistencia que tiene excelente calidad de superficie y soldabilidad de puntos, y a un método de manufactura para la misma, la lámina de acero galvanizada por inmersión en caliente de alta resistencia que comprende una lámina de acero base y una capa galvanizada formada sobre la superficie de la lámina de acero base, que comprende, en % en peso: 0.1-0.3% de carbono (C); 0.5-2.5% de silicio (Si); 2.0-8.0% de manganeso (Mn); 0.001-0.5% de aluminio soluble (Alsol.); 0.04% o menos (excluyendo 0%) de fósforo (P); 0.015% o menos (excluyendo 0%) de azufre (S); 0.02% o menos (excluyendo 0%) de nitrógeno (N); 0.01-0.7% de cromo (Cr); (48/14) * [N] -0.1% de titanio (Ti); y un resto que es Fe e impurezas inevitables. La lámina de acero base tiene una microestructura que comprende, por fracción de área: 5-30% de ferrita; 5-20% de austenita; 50-80% de bainita y martensita; y 2% o menos (incluyendo 0%) de un precipitado, y tiene una microestructura, dentro de 2 µm, que comprende, por fracción de área, 50% o más de ferrita, 2% o menos (incluyendo 0%) de austenita, 50% o menos (incluyendo 0%) de bainita y martensita, y 2% o menos (incluyendo 0%) de un precipitado en la dirección de espesor de la superficie.
MX2018007347A 2015-12-15 2016-12-13 Amina de acero galvanizada por inmersion en caliente de alta resistencia que tiene excelente calidad de superficie y soldabilidad por puntos, y metodo de manufactura para la misma. MX2018007347A (es)

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KR1020150179185A KR101758485B1 (ko) 2015-12-15 2015-12-15 표면품질 및 점 용접성이 우수한 고강도 용융아연도금강판 및 그 제조방법
PCT/KR2016/014607 WO2017105064A1 (ko) 2015-12-15 2016-12-13 표면품질 및 점 용접성이 우수한 고강도 용융아연도금강판 및 그 제조방법

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