WO2020085861A1 - Acier austénitique cryogénique à haute teneur en manganèse ayant une excellente forme, et procédé de fabrication associé - Google Patents

Acier austénitique cryogénique à haute teneur en manganèse ayant une excellente forme, et procédé de fabrication associé Download PDF

Info

Publication number
WO2020085861A1
WO2020085861A1 PCT/KR2019/014193 KR2019014193W WO2020085861A1 WO 2020085861 A1 WO2020085861 A1 WO 2020085861A1 KR 2019014193 W KR2019014193 W KR 2019014193W WO 2020085861 A1 WO2020085861 A1 WO 2020085861A1
Authority
WO
WIPO (PCT)
Prior art keywords
less
austenite
present
rolling
tnr
Prior art date
Application number
PCT/KR2019/014193
Other languages
English (en)
Korean (ko)
Inventor
이운해
김보성
석정훈
이동호
김성규
강상덕
Original Assignee
주식회사 포스코
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
Priority claimed from KR1020190118925A external-priority patent/KR102255826B1/ko
Application filed by 주식회사 포스코 filed Critical 주식회사 포스코
Priority to EP19876795.6A priority Critical patent/EP3872216A4/fr
Priority to CN201980069717.2A priority patent/CN112930415A/zh
Publication of WO2020085861A1 publication Critical patent/WO2020085861A1/fr

Links

Images

Classifications

    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/002—Heat treatment of ferrous alloys containing Cr
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • 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
    • 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
    • C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
    • 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
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium with copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese

Definitions

  • high-manganese steel has a high deformation resistance at high temperatures, and in particular, in the case of thin materials, it is difficult to secure a uniform shape in the longitudinal direction according to a rolling pass, a rolling reduction, and the like.
  • shape of the hot rolled material is inferior, cooling safety is lowered, and there is a possibility of causing equipment damage in a process such as transfer.
  • longitudinal shape of the hot rolled material is inferior, it is not preferable in terms of economical efficiency and productivity since subsequent work such as shape correction work must be performed.
  • Figure 1 (a) is a view for helping to understand the bone and floor formed in the steel material in the present invention
  • Figure 1 (b) is a picture of a steel material according to an example of the present invention.
  • the austenite-based high-manganese steel for excellent cryogenic shape has a difference in height between the floor and the valley formed in the steel in the region within 2 m for the rolling direction even if a separate calibration operation is not performed after the steel is manufactured. Since it is within a maximum of 10 mm, excellent shape uniformity can be secured.
  • Figure 1 (a) is a view for helping to understand the bone and floor formed in the steel material in the present invention
  • Figure 1 (b) is a picture of a steel material according to an example of the present invention.
  • composition of the slab provided in the manufacturing method of the present invention corresponds to the steel composition of the austenitic high-manganese steel described above
  • description of the steel composition of the slab is described for the steel composition of the austenitic high-manganese steel described above. Instead.
  • the slab provided with the above-described steel composition may be primary heated in a temperature range of 1050 to 1300 ° C.
  • the primary heating temperature is less than a predetermined range, a problem that excessive rolling load may occur during primary hot rolling or a problem that an alloy component is not sufficiently dissolved may occur, and the present invention provides a lower limit of the primary heating temperature range. It can be limited to 1050 °C.
  • the primary heating temperature exceeds a certain range, there is a fear that the grains are excessively grown and the strength is lowered or the hot rollability of the steel material is deteriorated by heating the steel above the solidus temperature of the steel material.
  • the upper limit of the silver slab primary heating temperature range may be limited to 1300 ° C.
  • the secondary hot rolling process includes a rough rolling process and a finish rolling process, and the secondary reheated intermediate material may be provided as an intermediate material by secondary hot rolling.
  • the finish rolling is preferably performed in a temperature range of (Tnr-120) to Tnr ° C.
  • Tnr can be derived by Equation 1 below.
  • the present invention can limit the finish rolling temperature of the secondary hot rolling to the range of (Tnr-120) to Tnr ° C.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

Un aspect de la présente invention concerne un acier austénitique cryogénique à haute teneur en manganèse ayant une excellente forme, qui comprend 0,2 à 0,5 % en poids de C, 23 à 28 % en poids de Mn, 0,05 à 0,5 % en poids de Si, 1 % en poids ou moins (mais pas 0 % en poids) en poids de Cu, 0,03 % en poids ou moins de P, 0,005 % en poids ou moins de S, 0,5 % en poids ou moins d'Al, 2,5 à 4,5 % en poids de Cr, et 0,0005 à 0,01 % en poids de B, le reste étant constitué de Fe et d'autres impuretés inévitables, et comprend également au moins 95 % en poids d'austénite en tant que microstructure, la ténacité au choc Charpy à -196 °C étant d'au moins 30 J (sur la base d'une épaisseur de 5 mm), et la différence maximale de hauteur entre une crête et un creux formé dans une zone de 2 m le long de la direction de laminage peut être d'au plus 10 mm
PCT/KR2019/014193 2018-10-25 2019-10-25 Acier austénitique cryogénique à haute teneur en manganèse ayant une excellente forme, et procédé de fabrication associé WO2020085861A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19876795.6A EP3872216A4 (fr) 2018-10-25 2019-10-25 Acier austénitique cryogénique à haute teneur en manganèse ayant une excellente forme, et procédé de fabrication associé
CN201980069717.2A CN112930415A (zh) 2018-10-25 2019-10-25 形状优良的超低温用奥氏体高锰钢材及其制造方法

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20180128504 2018-10-25
KR10-2018-0128504 2018-10-25
KR1020190118925A KR102255826B1 (ko) 2018-10-25 2019-09-26 형상이 우수한 극저온용 오스테나이트계 고망간 강재 및 그 제조방법
KR10-2019-0118925 2019-09-26

Publications (1)

Publication Number Publication Date
WO2020085861A1 true WO2020085861A1 (fr) 2020-04-30

Family

ID=70330521

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2019/014193 WO2020085861A1 (fr) 2018-10-25 2019-10-25 Acier austénitique cryogénique à haute teneur en manganèse ayant une excellente forme, et procédé de fabrication associé

Country Status (1)

Country Link
WO (1) WO2020085861A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116426836B (zh) * 2023-05-16 2024-01-05 燕山大学 一种Fe-Mn-Al-C-Nb-V奥氏体轻质钢及其制备方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR940002370A (ko) 1992-07-24 1994-02-17 정명식 성형성, 강도 및 용접성이 우수한 오스테나이트계 고 망간강과 그 제조방법
JP2007126715A (ja) * 2005-11-04 2007-05-24 Sumitomo Metal Ind Ltd 高Ｍｎ鋼材及びその製造方法
KR20130088331A (ko) * 2012-01-31 2013-08-08 현대제철 주식회사 고강도 강판 및 그 제조 방법
CN107620010A (zh) * 2017-10-18 2018-01-23 舞阳钢铁有限责任公司 一种低屈强比高韧性高锰钢板及其生产方法
KR20180072967A (ko) * 2016-12-22 2018-07-02 주식회사 포스코 저온인성 및 항복강도가 우수한 고 망간 강 및 제조 방법
KR20180074450A (ko) * 2016-12-23 2018-07-03 주식회사 포스코 극저온용 오스테나이트계 고 망간 강 및 제조방법

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR940002370A (ko) 1992-07-24 1994-02-17 정명식 성형성, 강도 및 용접성이 우수한 오스테나이트계 고 망간강과 그 제조방법
JP2007126715A (ja) * 2005-11-04 2007-05-24 Sumitomo Metal Ind Ltd 高Ｍｎ鋼材及びその製造方法
KR20130088331A (ko) * 2012-01-31 2013-08-08 현대제철 주식회사 고강도 강판 및 그 제조 방법
KR20180072967A (ko) * 2016-12-22 2018-07-02 주식회사 포스코 저온인성 및 항복강도가 우수한 고 망간 강 및 제조 방법
KR20180074450A (ko) * 2016-12-23 2018-07-03 주식회사 포스코 극저온용 오스테나이트계 고 망간 강 및 제조방법
CN107620010A (zh) * 2017-10-18 2018-01-23 舞阳钢铁有限责任公司 一种低屈强比高韧性高锰钢板及其生产方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116426836B (zh) * 2023-05-16 2024-01-05 燕山大学 一种Fe-Mn-Al-C-Nb-V奥氏体轻质钢及其制备方法

Similar Documents

Publication Publication Date Title
WO2018074887A1 (fr) Armature de béton armé à haute résistance et procédé de fabrication de ladite armature de béton armé à haute résistance
WO2018117712A1 (fr) Acier à teneur élevée en manganèse ayant une ténacité à basse température et une limite d'élasticité supérieures et procédé de fabrication
WO2019125083A1 (fr) Acier résistant à l'usure possédant une excellente dureté et une excellente ténacité aux chocs, et son procédé de production
WO2014209064A1 (fr) Tôle d'acier à haute résistance et procédé de fabrication associé
WO2018117614A1 (fr) Matériau en acier ultra-épais ayant d'excellentes propriétés de surface en nrl-dwt et son procédé de fabrication
WO2020067686A1 (fr) Acier résistant à l'abrasion présentant une excellente dureté et une excellente solidité au choc, et son procédé de fabrication
WO2018110779A1 (fr) Tôle d'acier faiblement allié ayant une résistance et une ductilité excellentes
WO2018117678A1 (fr) Matériau en acier austénitique présentant de remarquabes caractéristiques de surface, et son procédé de production
WO2016104883A1 (fr) Matériau d'acier inoxydable ferritique présentant une excellente ductilité et son procédé de production
WO2020085684A1 (fr) Plaque d'acier destinée à un récipient sous pression présentant une excellente ténacité cryogénique et une excellente résistance à l'allongement et son procédé de fabrication
KR20200047319A (ko) 항복강도가 우수한 오스테나이트계 고망간 강재 및 그 제조방법
WO2020085861A1 (fr) Acier austénitique cryogénique à haute teneur en manganèse ayant une excellente forme, et procédé de fabrication associé
WO2013048181A2 (fr) Acier inoxydable duplex faiblement allié ayant de remarquables propriétés de résistance à la corrosion et de façonnage à chaud
WO2019125025A1 (fr) Matériau en acier à teneur élevée en manganèse, à base d'austénite, à résistance élevée, et son procédé de fabrication
KR20200047318A (ko) 형상이 우수한 극저온용 오스테나이트계 고망간 강재 및 그 제조방법
WO2019125076A1 (fr) Acier résistant à l'usure ayant d'excellentes dureté et ténacité au choc et procédé pour la production de celui-ci
WO2019124729A1 (fr) Acier inoxydable ferritique utilitaire possédant une excellente aptitude au façonnage à chaud et son procédé de fabrication
WO2020085852A1 (fr) Acier austénitique à haute teneur en manganèse ayant une haute limite d'élasticité et son procédé de fabrication
WO2019132179A1 (fr) Feuille d'acier laminée à chaud à haute résistance et haute robustesse et son procédé de fabrication
WO2020085864A1 (fr) Acier austénitique cryogénique à haute teneur en manganèse ayant une excellente résistance à la corrosion et procédé de fabrication associé
WO2020085858A1 (fr) Acier austénitique cryogénique à haute teneur en manganèse ayant une forme excellente, et son procédé de fabrication
WO2020085847A1 (fr) Acier austénitique à haute teneur en manganèse pour applications cryogéniques ayant une excellente qualité de surface et une excellente résistance à la fissuration par corrosion sous contrainte, et son procédé de fabrication
WO2017095049A1 (fr) Fil machine présentant une excellente résistance aux chocs à basse température et son procédé de fabrication
WO2019093689A1 (fr) Tôle d'acier laminée à froid à résistance élevée et faible ténacité ayant d'excellentes propriétés de rupture et son procédé de production
WO2020105885A1 (fr) Acier inoxydable contenant du bore doté d'une aptitude au façonnage à chaud et de propriétés de traction excellentes, et son procédé de fabrication

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19876795

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2019876795

Country of ref document: EP

Effective date: 20210525