JP7398970B2 - 厚鋼板およびその製造方法 - Google Patents

厚鋼板およびその製造方法 Download PDF

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Publication number: JP7398970B2
Authority: JP; Japan
Prior art keywords: mass; less; temperature; rolling; steel plate
Prior art date: 2019-04-22
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.): Active

Application number

JP2020007626A

Other languages

English (en)

Japanese (ja)

Other versions

JP2020176329A (ja

Inventor

秀徳名古

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.)

Kobe Steel Ltd

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.)

2019-04-22

Filing date

2020-01-21

Publication date

2023-12-15

2020-01-21 Application filed by Kobe Steel Ltd filed Critical Kobe Steel Ltd

2020-03-30 Priority to KR1020217034903A priority Critical patent/KR102684370B1/ko

2020-03-30 Priority to EP20794425.7A priority patent/EP3940103A4/en

2020-03-30 Priority to CN202080029745.4A priority patent/CN113840933B/zh

2020-03-30 Priority to PCT/JP2020/014612 priority patent/WO2020217873A1/ja

2020-10-29 Publication of JP2020176329A publication Critical patent/JP2020176329A/ja

2023-12-15 Application granted granted Critical

2023-12-15 Publication of JP7398970B2 publication Critical patent/JP7398970B2/ja

Status Active legal-status Critical Current

2040-01-21 Anticipated expiration legal-status Critical

Links

229910000831 Steel Inorganic materials 0.000 title claims description 76
239000010959 steel Substances 0.000 title claims description 76
238000004519 manufacturing process Methods 0.000 title claims description 31
238000005096 rolling process Methods 0.000 claims description 58
238000001816 cooling Methods 0.000 claims description 48
238000005098 hot rolling Methods 0.000 claims description 28
230000009467 reduction Effects 0.000 claims description 27
239000000203 mixture Substances 0.000 claims description 25
239000013078 crystal Substances 0.000 claims description 24
238000010438 heat treatment Methods 0.000 claims description 18
238000000034 method Methods 0.000 claims description 12
230000001186 cumulative effect Effects 0.000 claims description 11
229910052802 copper Inorganic materials 0.000 claims description 8
239000012535 impurity Substances 0.000 claims description 8
229910052804 chromium Inorganic materials 0.000 claims description 6
229910052799 carbon Inorganic materials 0.000 claims description 5
229910052748 manganese Inorganic materials 0.000 claims description 5
229910052759 nickel Inorganic materials 0.000 claims description 5
229910052720 vanadium Inorganic materials 0.000 claims description 4
229910052796 boron Inorganic materials 0.000 claims description 3
229910052750 molybdenum Inorganic materials 0.000 claims description 3
229910052710 silicon Inorganic materials 0.000 claims description 3
239000004615 ingredient Substances 0.000 claims description 2
229910000859 α-Fe Inorganic materials 0.000 description 33
229910000734 martensite Inorganic materials 0.000 description 17
239000000463 material Substances 0.000 description 14
230000015572 biosynthetic process Effects 0.000 description 13
238000002474 experimental method Methods 0.000 description 13
230000009466 transformation Effects 0.000 description 13
230000000694 effects Effects 0.000 description 12
229910001566 austenite Inorganic materials 0.000 description 9
230000001747 exhibiting effect Effects 0.000 description 7
230000006866 deterioration Effects 0.000 description 6
238000005259 measurement Methods 0.000 description 6
239000006104 solid solution Substances 0.000 description 6
230000007704 transition Effects 0.000 description 6
229910052761 rare earth metal Inorganic materials 0.000 description 5
230000002542 deteriorative effect Effects 0.000 description 4
238000001887 electron backscatter diffraction Methods 0.000 description 4
238000012545 processing Methods 0.000 description 4
229910052718 tin Inorganic materials 0.000 description 4
ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
238000004458 analytical method Methods 0.000 description 3
238000005266 casting Methods 0.000 description 3
230000007423 decrease Effects 0.000 description 3
229910001562 pearlite Inorganic materials 0.000 description 3
239000000126 substance Substances 0.000 description 3
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
230000007246 mechanism Effects 0.000 description 2
239000002244 precipitate Substances 0.000 description 2
230000005855 radiation Effects 0.000 description 2
238000011160 research Methods 0.000 description 2
238000009864 tensile test Methods 0.000 description 2
229910021529 ammonia Inorganic materials 0.000 description 1
238000000137 annealing Methods 0.000 description 1
229910052787 antimony Inorganic materials 0.000 description 1
229910052785 arsenic Inorganic materials 0.000 description 1
QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
229910001563 bainite Inorganic materials 0.000 description 1
229910001567 cementite Inorganic materials 0.000 description 1
230000003749 cleanliness Effects 0.000 description 1
238000007796 conventional method Methods 0.000 description 1
230000000593 degrading effect Effects 0.000 description 1
238000010586 diagram Methods 0.000 description 1
238000005516 engineering process Methods 0.000 description 1
238000011156 evaluation Methods 0.000 description 1
-1 for example Substances 0.000 description 1
238000009863 impact test Methods 0.000 description 1
230000006698 induction Effects 0.000 description 1
229910052742 iron Inorganic materials 0.000 description 1
KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
229910052747 lanthanoid Inorganic materials 0.000 description 1
150000002602 lanthanoids Chemical class 0.000 description 1
150000004767 nitrides Chemical class 0.000 description 1
230000008520 organization Effects 0.000 description 1
229910052760 oxygen Inorganic materials 0.000 description 1
239000001301 oxygen Substances 0.000 description 1
229910052698 phosphorus Inorganic materials 0.000 description 1
238000002360 preparation method Methods 0.000 description 1
230000008569 process Effects 0.000 description 1
239000000047 product Substances 0.000 description 1
230000001737 promoting effect Effects 0.000 description 1
239000002994 raw material Substances 0.000 description 1
238000011084 recovery Methods 0.000 description 1
238000003303 reheating Methods 0.000 description 1
230000000717 retained effect Effects 0.000 description 1
229910052706 scandium Inorganic materials 0.000 description 1
SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 1
238000005204 segregation Methods 0.000 description 1
238000010583 slow cooling Methods 0.000 description 1
229910052717 sulfur Inorganic materials 0.000 description 1
238000012360 testing method Methods 0.000 description 1
235000013619 trace mineral Nutrition 0.000 description 1
239000011573 trace mineral Substances 0.000 description 1
238000003466 welding Methods 0.000 description 1
229910052727 yttrium Inorganic materials 0.000 description 1
VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1

Images

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
- C22C38/02—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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing 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
- 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
- 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
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
- 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
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
- 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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
- 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
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
- 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
- C22C38/16—Ferrous alloys, e.g. steel alloys containing 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
- 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
- C21D2201/00—Treatment for obtaining particular effects
- C21D2201/05—Grain orientation
- 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
- C21D2211/005—Ferrite

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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)

JP2020007626A 2019-04-22 2020-01-21 厚鋼板およびその製造方法 Active JP7398970B2 (ja)

Priority Applications (4)

Application Number	Priority Date	Filing Date	Title
KR1020217034903A KR102684370B1 (ko)	2019-04-22	2020-03-30	후강판 및 그의 제조 방법
EP20794425.7A EP3940103A4 (en)	2019-04-22	2020-03-30	THICK STEEL PLATE
CN202080029745.4A CN113840933B (zh)	2019-04-22	2020-03-30	厚钢板及其制造方法
PCT/JP2020/014612 WO2020217873A1 (ja)	2019-04-22	2020-03-30	厚鋼板およびその製造方法

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP2019081271		2019-04-22
JP2019081271		2019-04-22

Publications (2)

Publication Number	Publication Date
JP2020176329A JP2020176329A (ja)	2020-10-29
JP7398970B2 true JP7398970B2 (ja)	2023-12-15

Family

ID=72936617

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
JP2020007626A Active JP7398970B2 (ja)	2019-04-22	2020-01-21	厚鋼板およびその製造方法

Country Status (4)

Country	Link
EP (1)	EP3940103A4 (zh)
JP (1)	JP7398970B2 (zh)
CN (1)	CN113840933B (zh)
WO (1)	WO2020217873A1 (zh)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP2007270194A (ja)	2006-03-30	2007-10-18	Jfe Steel Kk	耐ｓｒ特性に優れた高強度鋼板の製造方法
JP2008025014A (ja)	2006-07-25	2008-02-07	Sumitomo Metal Ind Ltd	Ｌｐｇ・アンモニア運搬船用タンクに用いられる鋼材
JP2009127065A (ja)	2007-11-20	2009-06-11	Nippon Steel Corp	母材低温靭性およびｈａｚ低温靭性に優れた低降伏比高張力鋼板とその製造方法
WO2011096456A1 (ja)	2010-02-08	2011-08-11	新日本製鐵株式会社	厚鋼板の製造方法
JP2011179042A (ja)	2010-02-26	2011-09-15	Jfe Steel Corp	低温靭性に優れた厚肉高張力熱延鋼板の製造方法
JP2013204145A (ja)	2012-03-29	2013-10-07	Kobe Steel Ltd	曲げ加工性、衝撃特性および引張特性に優れた鋼板およびその製造方法
JP5679091B1 (ja)	2013-04-04	2015-03-04	Ｊｆｅスチール株式会社	熱延鋼板およびその製造方法
JP5812193B2 (ja)	2012-05-21	2015-11-11	Ｊｆｅスチール株式会社	脆性き裂伝播停止特性に優れた構造用高強度厚鋼板およびその製造方法
JP2016148105A (ja)	2015-02-10	2016-08-18	新日鐵住金株式会社	Ｌｐｇタンク用鋼板およびその製造方法
JP2019502018A (ja)	2015-12-04	2019-01-24	ポスコＰｏｓｃｏ	脆性亀裂伝播抵抗性及び溶接部の脆性亀裂開始抵抗性に優れた高強度鋼材及びその製造方法
WO2019058424A1 (ja)	2017-09-19	2019-03-28	新日鐵住金株式会社	鋼管及び鋼板

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH08158006A (ja) *	1994-12-06	1996-06-18	Kobe Steel Ltd	溶接熱影響部の靭性が優れた高強度鋼
KR100851189B1 (ko) *	2006-11-02	2008-08-08	주식회사 포스코	저온인성이 우수한 초고강도 라인파이프용 강판 및 그제조방법
JP6196929B2 (ja) *	2014-04-08	2017-09-13	株式会社神戸製鋼所	極低温でのｈａｚ靱性に優れた厚鋼板
JP2019081271A (ja)	2017-10-30	2019-05-30	クラレプラスチックス株式会社	ホワイトボードおよび映写スクリーン兼用フィルム
JP7100318B2 (ja)	2018-07-11	2022-07-13	Ｔｎｋ水道コンサルタント株式会社	硫酸腐食耐性コンクリート系管、コンクリート系管の硫酸腐食防止方法及び鉄筋の防食方法

2020
- 2020-01-21 JP JP2020007626A patent/JP7398970B2/ja active Active
- 2020-03-30 CN CN202080029745.4A patent/CN113840933B/zh active Active
- 2020-03-30 EP EP20794425.7A patent/EP3940103A4/en active Pending
- 2020-03-30 WO PCT/JP2020/014612 patent/WO2020217873A1/ja unknown

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP2007270194A (ja)	2006-03-30	2007-10-18	Jfe Steel Kk	耐ｓｒ特性に優れた高強度鋼板の製造方法
JP2008025014A (ja)	2006-07-25	2008-02-07	Sumitomo Metal Ind Ltd	Ｌｐｇ・アンモニア運搬船用タンクに用いられる鋼材
JP2009127065A (ja)	2007-11-20	2009-06-11	Nippon Steel Corp	母材低温靭性およびｈａｚ低温靭性に優れた低降伏比高張力鋼板とその製造方法
WO2011096456A1 (ja)	2010-02-08	2011-08-11	新日本製鐵株式会社	厚鋼板の製造方法
JP2011179042A (ja)	2010-02-26	2011-09-15	Jfe Steel Corp	低温靭性に優れた厚肉高張力熱延鋼板の製造方法
JP2013204145A (ja)	2012-03-29	2013-10-07	Kobe Steel Ltd	曲げ加工性、衝撃特性および引張特性に優れた鋼板およびその製造方法
JP5812193B2 (ja)	2012-05-21	2015-11-11	Ｊｆｅスチール株式会社	脆性き裂伝播停止特性に優れた構造用高強度厚鋼板およびその製造方法
JP5679091B1 (ja)	2013-04-04	2015-03-04	Ｊｆｅスチール株式会社	熱延鋼板およびその製造方法
JP2016148105A (ja)	2015-02-10	2016-08-18	新日鐵住金株式会社	Ｌｐｇタンク用鋼板およびその製造方法
JP2019502018A (ja)	2015-12-04	2019-01-24	ポスコＰｏｓｃｏ	脆性亀裂伝播抵抗性及び溶接部の脆性亀裂開始抵抗性に優れた高強度鋼材及びその製造方法
WO2019058424A1 (ja)	2017-09-19	2019-03-28	新日鐵住金株式会社	鋼管及び鋼板

Also Published As

Publication number	Publication date
WO2020217873A1 (ja)	2020-10-29
EP3940103A1 (en)	2022-01-19
CN113840933B (zh)	2022-09-16
JP2020176329A (ja)	2020-10-29
KR20210142184A (ko)	2021-11-24
CN113840933A (zh)	2021-12-24
EP3940103A4 (en)	2022-11-30

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