KR960023169A - Manufacturing method of austenitic heat resistant steel - Google Patents

Manufacturing method of austenitic heat resistant steel Download PDF

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Publication number
KR960023169A
KR960023169A KR1019940034236A KR19940034236A KR960023169A KR 960023169 A KR960023169 A KR 960023169A KR 1019940034236 A KR1019940034236 A KR 1019940034236A KR 19940034236 A KR19940034236 A KR 19940034236A KR 960023169 A KR960023169 A KR 960023169A
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KR
South Korea
Prior art keywords
austenitic heat
resistant steel
cooling
steel
heat resistant
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Application number
KR1019940034236A
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Korean (ko)
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KR970009506B1 (en
Inventor
구명희
신예식
김학영
Original Assignee
김현철
삼미종합특수강 주식회사
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Priority to KR1019940034236A priority Critical patent/KR970009506B1/en
Publication of KR960023169A publication Critical patent/KR960023169A/en
Application granted granted Critical
Publication of KR970009506B1 publication Critical patent/KR970009506B1/en

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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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C21D1/32—Soft annealing, e.g. spheroidising
    • 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
    • C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
    • 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
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/001—Austenite

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

Abstract

본 발명은 고질소(N), 고망간(Mn)을 포함하는 오스테나이트(Austenite)계 내열강이 상온에서 향상된 인성을 갖게 하기위해 탄질화물을 구성화시키기 위한 방법에 관한 것으로, 고질소(N), 고망간(Mn)을 포함한 오스테나이트(Austenite)계 내열강(일명 : 21-4N강)으로 조성된 주조체를 950∼1100℃ 온도 범위에서 변형률 40% 이상으로 마무리 열간 가공하는 공정과, 이어서 950∼1.200℃ 온도 범위에서 30분∼2시간 유지 후 수냉 또는 공냉하는 공정으로 이루어진 오스테나이트(Austenite)계 내열강의 제조방법에 관한 기술임.The present invention relates to a method for constituting carbonitrides for austenitic heat resistant steels including high nitrogen (N) and high manganese (Mn) to have improved toughness at room temperature. In the process of hot-finishing a cast formed of austenitic heat-resistant steel (aka 21-4N steel) including high manganese (Mn) with a strain rate of 40% or more at a temperature range of 950 to 1100 ° C, followed by 950 A technique related to a method for producing austenitic heat-resistant steel, which is a process of cooling or air-cooling after holding for 30 minutes to 2 hours in a temperature range of -1.200 ° C.

Description

오스테나이트(Austenite)계 내열강의 제조방법Manufacturing method of austenitic heat resistant steel

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 가공제와 종래 가공제에 대한 현미경 조직 비교도.1 is a microstructure comparison diagram of the processing agent of the present invention and the conventional processing agent.

Claims (1)

고질소(N), 고망간(Mn)을 포함한 오스테나이트(Austenite)계 내열강(일명 : 21-4N강)으로 조성된 주조체를 950∼1100℃ 온도 범위에서 변형롤 40% 이상으로 마무리 열간가공하는 공정과, 이어서 950∼1.200℃ 온도 범위에서 30분∼2시간 유지 후 수냉 또는 공냉하는 공정으로 이루어진 오스테나이트(Austemite)계 내열강의 제조방법.Castings made of austenitic heat-resistant steel (aka 21-4N steel) containing high nitrogen (N) and high manganese (Mn) are finished hot-rolled at 40% or more of deformation rolls at temperatures ranging from 950 to 1100 ° C. A process for producing austenite heat-resistant steel comprising a step of performing, followed by a step of holding water for 30 minutes to 2 hours at a temperature range of 950-1.200 ° C. and cooling or air-cooling. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940034236A 1994-12-14 1994-12-14 Making method of austenite heat resistance steel KR970009506B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940034236A KR970009506B1 (en) 1994-12-14 1994-12-14 Making method of austenite heat resistance steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940034236A KR970009506B1 (en) 1994-12-14 1994-12-14 Making method of austenite heat resistance steel

Publications (2)

Publication Number Publication Date
KR960023169A true KR960023169A (en) 1996-07-18
KR970009506B1 KR970009506B1 (en) 1997-06-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940034236A KR970009506B1 (en) 1994-12-14 1994-12-14 Making method of austenite heat resistance steel

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KR (1) KR970009506B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101974815B1 (en) * 2017-11-28 2019-05-07 포항공과대학교 산학협력단 Austenitic steel excellent in high temperature strength using reduction of chromium content
KR20200005244A (en) * 2018-07-06 2020-01-15 포항공과대학교 산학협력단 Austenitic steel excellent in high temperature strength comprising copper
KR20200009434A (en) * 2018-07-19 2020-01-30 포항공과대학교 산학협력단 Austenitic steel excellent in room temperature strength and high temperature strength

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101974815B1 (en) * 2017-11-28 2019-05-07 포항공과대학교 산학협력단 Austenitic steel excellent in high temperature strength using reduction of chromium content
KR20200005244A (en) * 2018-07-06 2020-01-15 포항공과대학교 산학협력단 Austenitic steel excellent in high temperature strength comprising copper
KR20200009434A (en) * 2018-07-19 2020-01-30 포항공과대학교 산학협력단 Austenitic steel excellent in room temperature strength and high temperature strength

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Publication number Publication date
KR970009506B1 (en) 1997-06-14

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