KR102349426B9 - 저온 충격인성이 우수한 강재 및 그 제조방법 - Google Patents

저온 충격인성이 우수한 강재 및 그 제조방법

Info

Publication number
KR102349426B9
KR102349426B9 KR1020200059176A KR20200059176A KR102349426B9 KR 102349426 B9 KR102349426 B9 KR 102349426B9 KR 1020200059176 A KR1020200059176 A KR 1020200059176A KR 20200059176 A KR20200059176 A KR 20200059176A KR 102349426 B9 KR102349426 B9 KR 102349426B9
Authority
KR
South Korea
Prior art keywords
steel
manufacturing
same
fracture toughness
excellent low
Prior art date
Application number
KR1020200059176A
Other languages
English (en)
Other versions
KR102349426B1 (ko
KR20210142405A (ko
Inventor
이희웅
박경갑
Original Assignee
현대제철 주식회사
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 현대제철 주식회사 filed Critical 현대제철 주식회사
Priority to KR1020200059176A priority Critical patent/KR102349426B1/ko
Publication of KR20210142405A publication Critical patent/KR20210142405A/ko
Application granted granted Critical
Publication of KR102349426B1 publication Critical patent/KR102349426B1/ko
Publication of KR102349426B9 publication Critical patent/KR102349426B9/ko

Links

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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • 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
    • C21D8/0247—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
    • 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
    • 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum

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)
KR1020200059176A 2020-05-18 2020-05-18 저온 충격인성이 우수한 강재 및 그 제조방법 KR102349426B1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020200059176A KR102349426B1 (ko) 2020-05-18 2020-05-18 저온 충격인성이 우수한 강재 및 그 제조방법

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020200059176A KR102349426B1 (ko) 2020-05-18 2020-05-18 저온 충격인성이 우수한 강재 및 그 제조방법

Publications (3)

Publication Number Publication Date
KR20210142405A KR20210142405A (ko) 2021-11-25
KR102349426B1 KR102349426B1 (ko) 2022-01-11
KR102349426B9 true KR102349426B9 (ko) 2023-05-11

Family

ID=78745951

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020200059176A KR102349426B1 (ko) 2020-05-18 2020-05-18 저온 충격인성이 우수한 강재 및 그 제조방법

Country Status (1)

Country Link
KR (1) KR102349426B1 (ko)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115256060B (zh) * 2022-08-11 2023-12-01 宁蒗恒泰农业投资开发有限公司 一种果树专用嫁接刀具生产方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60169517A (ja) * 1984-02-13 1985-09-03 Nippon Steel Corp 肉厚方向に均一な硬さをもつ引張り強さ５０Ｋｇ／ｍｍ↑２以上の高強度鋼の製造法
JP2000129392A (ja) * 1998-10-20 2000-05-09 Nippon Steel Corp 耐疲労き裂進展特性に優れた高強度鋼材及びその製造方法
KR101676143B1 (ko) 2014-12-25 2016-11-15 주식회사 포스코 저온충격인성이 우수한 저항복비형 고강도 강재 및 그 제조방법
KR101998991B1 (ko) * 2017-12-15 2019-07-10 주식회사 포스코 인장강도 및 저온충격인성이 우수한 압력용기용 강판 및 그 제조방법
KR101999024B1 (ko) * 2017-12-26 2019-07-10 주식회사 포스코 수소유기균열 저항성이 우수한 강재 및 그 제조방법

Also Published As

Publication number Publication date
KR102349426B1 (ko) 2022-01-11
KR20210142405A (ko) 2021-11-25

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Legal Events

Date Code Title Description
AMND Amendment
E601 Decision to refuse application
AMND Amendment
X701 Decision to grant (after re-examination)
GRNT Written decision to grant
G170 Re-publication after modification of scope of protection [patent]