EP3872216A4 - Cryogenic austenitic high-manganese steel having excellent shape, and manufacturing method therefor - Google Patents

Cryogenic austenitic high-manganese steel having excellent shape, and manufacturing method therefor Download PDF

Info

Publication number: EP3872216A4
Authority: EP; European Patent Office
Prior art keywords: manufacturing; method therefor; manganese steel; excellent shape; austenitic high
Prior art date: 2018-10-25
Legal status (The legal status 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 status listed.): Pending

Application number

EP19876795.6A

Other languages

German (de)

French (fr)

Other versions

EP3872216A1 (en

Inventor

Un-Hae LEE

Bo-Sung Kim

Jeong-Hun SEOK

Dong-Ho Lee

Sung-Kyu Kim

Sang-Deok Kang

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Posco Holdings Inc

Original Assignee

Posco Co 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.)

2018-10-25

Filing date

2019-10-25

Publication date

2021-09-01

2019-10-25 Application filed by Posco Co Ltd filed Critical Posco Co Ltd

2019-10-25 Priority claimed from PCT/KR2019/014193 external-priority patent/WO2020085861A1/en

2021-09-01 Publication of EP3872216A4 publication Critical patent/EP3872216A4/en

2021-09-01 Publication of EP3872216A1 publication Critical patent/EP3872216A1/en

Status Pending legal-status Critical Current

Classifications

- 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
- 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
- C21D1/02—Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation
- 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
- 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
- C21D8/0231—Warm rolling
- 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
- C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following 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
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite

Landscapes

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

EP19876795.6A 2018-10-25 2019-10-25 Cryogenic austenitic high-manganese steel having excellent shape, and manufacturing method therefor Pending EP3872216A1 (en)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
KR20180128504		2018-10-25
KR1020190118925A KR102255826B1 (en)	2018-10-25	2019-09-26	Ultra-low temperature austenitic high manganese steel having excellent shape and manufacturing method for the same
PCT/KR2019/014193 WO2020085861A1 (en)	2018-10-25	2019-10-25	Cryogenic austenitic high-manganese steel having excellent shape, and manufacturing method therefor

Publications (2)

Publication Number	Publication Date
EP3872216A4 true EP3872216A4 (en)	2021-09-01
EP3872216A1 EP3872216A1 (en)	2021-09-01

Family

ID=70733247

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
EP19875536.5A Pending EP3872210A1 (en)	2018-10-25	2019-10-25	Cryogenic austenitic high-manganese steel having excellent shape, and manufacturing method therefor
EP19876795.6A Pending EP3872216A1 (en)	2018-10-25	2019-10-25	Cryogenic austenitic high-manganese steel having excellent shape, and manufacturing method therefor

Family Applications Before (1)

Application Number	Title	Priority Date	Filing Date
EP19875536.5A Pending EP3872210A1 (en)	2018-10-25	2019-10-25	Cryogenic austenitic high-manganese steel having excellent shape, and manufacturing method therefor

Country Status (3)

Country	Link
EP (2)	EP3872210A1 (en)
KR (2)	KR102255825B1 (en)
CN (2)	CN112912529A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP7338792B2 (en) *	2021-02-08	2023-09-05	Ｊｆｅスチール株式会社	Steel material and manufacturing method thereof, tank and manufacturing method thereof
CN118369451A (en) *	2021-12-21	2024-07-19	浦项股份有限公司	Austenitic steel having excellent ultra-low temperature toughness in weld heat affected zone and method of manufacturing the same

Citations (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP2007126715A (en) *	2005-11-04	2007-05-24	Sumitomo Metal Ind Ltd	HIGH-Mn STEEL MATERIAL AND MANUFACTURING METHOD THEREFOR
CN106222554A (en) *	2016-08-23	2016-12-14	南京钢铁股份有限公司	A kind of economical steel used at ultra-low temperature and preparation method thereof
WO2017111510A1 (en) *	2015-12-23	2017-06-29	주식회사 포스코	Non-magnetic steel material having excellent hot workability and manufacturing method therefor
CN107177786A (en) *	2017-05-19	2017-09-19	东北大学	The design and its manufacture method of a kind of high manganese cut deal of LNG storage tank
WO2018117712A1 (en) *	2016-12-22	2018-06-28	주식회사 포스코	High manganese steel having superior low-temperature toughness and yield strength and manufacturing method
KR20180074450A (en) *	2016-12-23	2018-07-03	주식회사 포스코	Low temperature austenitic high manganese steel and method for manufacturing the same
CN108570541A (en) *	2018-05-14	2018-09-25	东北大学	A kind of high-temperature heat treatment method of the high manganese cut deal of LNG storage tank

Family Cites Families (5)

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KR940007374B1 (en)	1992-07-24	1994-08-16	포항종합제철 주식회사	Method of manufacturing austenite stainless steel
CN104220617B (en) *	2011-12-27	2016-10-26	Posco公司	There is the machining property of excellence and there is in welding heat affected region the austenitic steel of low-temperature flexibility, and manufacture method
KR101344640B1 (en) *	2012-01-31	2013-12-26	현대제철 주식회사	High strength steel plate and method for manufacturing the same
CN107881432A (en) *	2017-10-13	2018-04-06	舞阳钢铁有限责任公司	Inexpensive ultralow temperature steel heavy plate for pressure vessels and its production method
CN107620010A (en)	2017-10-18	2018-01-23	舞阳钢铁有限责任公司	A kind of low yield strength ratio high tenacity high manganese steel sheet and its production method

2019
- 2019-09-26 KR KR1020190118924A patent/KR102255825B1/en active IP Right Grant
- 2019-09-26 KR KR1020190118925A patent/KR102255826B1/en active IP Right Grant
- 2019-10-25 EP EP19875536.5A patent/EP3872210A1/en active Pending
- 2019-10-25 CN CN201980068654.9A patent/CN112912529A/en active Pending
- 2019-10-25 CN CN201980069717.2A patent/CN112930415A/en active Pending
- 2019-10-25 EP EP19876795.6A patent/EP3872216A1/en active Pending

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP2007126715A (en) *	2005-11-04	2007-05-24	Sumitomo Metal Ind Ltd	HIGH-Mn STEEL MATERIAL AND MANUFACTURING METHOD THEREFOR
WO2017111510A1 (en) *	2015-12-23	2017-06-29	주식회사 포스코	Non-magnetic steel material having excellent hot workability and manufacturing method therefor
CN106222554A (en) *	2016-08-23	2016-12-14	南京钢铁股份有限公司	A kind of economical steel used at ultra-low temperature and preparation method thereof
WO2018117712A1 (en) *	2016-12-22	2018-06-28	주식회사 포스코	High manganese steel having superior low-temperature toughness and yield strength and manufacturing method
KR20180074450A (en) *	2016-12-23	2018-07-03	주식회사 포스코	Low temperature austenitic high manganese steel and method for manufacturing the same
CN107177786A (en) *	2017-05-19	2017-09-19	东北大学	The design and its manufacture method of a kind of high manganese cut deal of LNG storage tank
CN108570541A (en) *	2018-05-14	2018-09-25	东北大学	A kind of high-temperature heat treatment method of the high manganese cut deal of LNG storage tank

Non-Patent Citations (1)

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Title
See also references of WO2020085861A1 *

Also Published As

Publication number	Publication date
KR102255825B1 (en)	2021-05-26
KR102255826B1 (en)	2021-05-26
EP3872210A4 (en)	2021-09-01
CN112912529A (en)	2021-06-04
KR20200047317A (en)	2020-05-07
EP3872216A1 (en)	2021-09-01
CN112930415A (en)	2021-06-08
EP3872210A1 (en)	2021-09-01
KR20200047318A (en)	2020-05-07

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2020-05-02	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE
2021-07-30	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
2021-07-30	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE
2021-09-01	17P	Request for examination filed	Effective date: 20210517
2021-09-01	A4	Supplementary search report drawn up and despatched	Effective date: 20210622
2021-09-01	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
2022-02-09	DAV	Request for validation of the european patent (deleted)
2022-02-09	DAX	Request for extension of the european patent (deleted)
2022-11-23	RAP3	Party data changed (applicant data changed or rights of an application transferred)	Owner name: POSCO HOLDINGS INC.
2023-02-08	RAP1	Party data changed (applicant data changed or rights of an application transferred)	Owner name: POSCO CO., LTD
2024-09-25	GRAP	Despatch of communication of intention to grant a patent	Free format text: ORIGINAL CODE: EPIDOSNIGR1
2024-09-25	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: GRANT OF PATENT IS INTENDED
2024-10-09	RIC1	Information provided on ipc code assigned before grant	Ipc: C21D 1/02 20060101ALI20240903BHEP Ipc: C21D 6/00 20060101ALI20240903BHEP Ipc: C21D 8/02 20060101ALI20240903BHEP Ipc: C21D 9/46 20060101ALI20240903BHEP Ipc: C22C 38/06 20060101ALI20240903BHEP Ipc: C22C 38/02 20060101ALI20240903BHEP Ipc: C22C 38/32 20060101ALI20240903BHEP Ipc: C22C 38/20 20060101ALI20240903BHEP Ipc: C22C 38/38 20060101AFI20240903BHEP
2024-10-30	INTG	Intention to grant announced	Effective date: 20240926