KR950018529A - Manufacturing method of nickel-rich high nitrogen austenitic precipitation hardening stainless cold rolled steel sheet - Google Patents

Manufacturing method of nickel-rich high nitrogen austenitic precipitation hardening stainless cold rolled steel sheet Download PDF

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Publication number
KR950018529A
KR950018529A KR1019930029967A KR930029967A KR950018529A KR 950018529 A KR950018529 A KR 950018529A KR 1019930029967 A KR1019930029967 A KR 1019930029967A KR 930029967 A KR930029967 A KR 930029967A KR 950018529 A KR950018529 A KR 950018529A
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KR
South Korea
Prior art keywords
rolled steel
steel sheet
precipitation hardening
cold rolled
manufacturing
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Application number
KR1019930029967A
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Korean (ko)
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KR960005222B1 (en
Inventor
이종석
이영국
김학
Original Assignee
조말수
포항종합제철 주식회사
백덕현
재단법인산업과학기술연구소
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Priority to KR1019930029967A priority Critical patent/KR960005222B1/en
Publication of KR950018529A publication Critical patent/KR950018529A/en
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Publication of KR960005222B1 publication Critical patent/KR960005222B1/en

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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
    • 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
    • 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
    • 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
    • C22C38/001—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
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • 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
    • 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
    • C21D2211/008—Martensite

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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 Sheet Steel (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

본 발명은 Mo을 첨가하지 않으면서 고강인 Ni의 일부를 N으로 대체하고 내식성을 향상시킬 목적으로 Cr함량을 증가시키며, 고강도화 위하여 Nb을 미량 첨가하여 열연 혹은 역변태 열처리중에 석출시키므로써, 내식성과 연성이 우수하면서 고강도를 갖는 오스테나이트계 석출경화형 스텐레스 냉연강판을 제조하는데 그 목적이 있다.The present invention replaces a part of Ni, which is high steel, without Mo, and increases the Cr content for the purpose of improving corrosion resistance, and by adding a small amount of Nb for high strength to precipitate during hot rolling or reverse transformation heat treatment, Its purpose is to produce an austenitic precipitation hardening stainless cold rolled steel sheet having excellent ductility and high strength.

본 발명은 오스테나이트계 석출경화형 스텐레스 냉연강판 제조방법에 있어서, 중량%로, C : 0.03%이하, Cr : 15-17%, Ni : 2-7.5%, Nb : 0.1-0.2%, N : 0.08-0.15%, Si : 0.5% 이하 및 기타 불가피한 불순원소가 함유된 강 슬라브를 열간압연한 후, 1200-1260℃의 온도에서 열연판 소둔처리하고, 압하율을 80%이상으로 냉간압연한 다음, 마르텐사이트-오스테나이트 역변태 종료온도 직상부터 상기 역변태 종료온도 +50℃사이의 온도에서 소둔처리한 후, 공랭 또는 수냉 처리하는 것을 특징으로하는 Ni절약형 고질소 고강도 오스테나이트계 석출 경화형 스텐레스 냉연강판 제조방법에 관한 것을 그 요지로 한다.In the present invention, the austenitic precipitation hardening stainless steel sheet manufacturing method, in weight%, C: 0.03% or less, Cr: 15-17%, Ni: 2-7.5%, Nb: 0.1-0.2%, N: 0.08 -0.15%, Si: hot rolled steel slab containing 0.5% or less and other unavoidable impurity elements, followed by hot roll annealing at a temperature of 1200-1260 ° C, cold rolling to 80% or more, Ni saving type high nitrogen high strength austenitic precipitation hardening type stainless steel cold rolled steel sheet characterized by annealing at the temperature between the martensite-austenite reverse transformation end temperature and the reverse transformation end temperature of + 50 ° C., followed by air cooling or water cooling. The thing regarding a manufacturing method shall be the summary.

Description

니켈 절약형 고질소 오스테나이트계 석출경화형 스텐레스 냉연강판 제조방법Manufacturing method of nickel-rich high nitrogen austenitic precipitation hardening stainless cold rolled steel sheet

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

Claims (1)

고강도 오스테나이트계 석출경화형 스텐레스 냉연강판 제조방법에 있어서, 중량%로, C : 0.03%이하, Cr : 15-17%, Ni : 2-7.5%, Nb : 0.1-0.2%, N : 0.08-0.15%, Si : 0.5% 이하 및 기타 불가피한 불순원소가 함유된 강 슬라브를 열간압연한 후, 1200-1260℃의 온도에서 열연판 소둔처리하고, 압하율을 80%이상으로 냉간압연한 다음, 마르텐사이트-오스테나이트 역변태 종료온도 직상부터 상기 역변태 종료온도 +50℃사이의 온도에서 소둔처리한 후, 공랭 또는 수냉 처리하는 것을 특징으로하는 Ni절약형 고질소 고강도 오스테나이트계 석출 경화형 스텐레스 냉연강판 제조방법.In the manufacturing method of high strength austenitic precipitation hardening stainless cold rolled steel sheet, in weight%, C: 0.03% or less, Cr: 15-17%, Ni: 2-7.5%, Nb: 0.1-0.2%, N: 0.08-0.15 %, Si: hot rolled steel slab containing 0.5% or less and other unavoidable impurity elements, followed by hot roll annealing at a temperature of 1200-1260 ° C., cold rolling to 80% or more, and then martensite -Ni-type high-nitrogen high-strength austenitic precipitation hardened stainless cold rolled steel sheet, characterized in that the annealing at the temperature between the reverse transformation end temperature immediately above the reverse transformation end temperature +50 ℃, followed by air cooling or water cooling treatment . ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930029967A 1993-12-27 1993-12-27 Making method of high nitrogen austenite stainless cold steel sheet KR960005222B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930029967A KR960005222B1 (en) 1993-12-27 1993-12-27 Making method of high nitrogen austenite stainless cold steel sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930029967A KR960005222B1 (en) 1993-12-27 1993-12-27 Making method of high nitrogen austenite stainless cold steel sheet

Publications (2)

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KR950018529A true KR950018529A (en) 1995-07-22
KR960005222B1 KR960005222B1 (en) 1996-04-23

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112280952A (en) * 2020-11-23 2021-01-29 浙江宝武钢铁有限公司 Heat treatment process of high-chromium-nitrogen nickel-free stainless steel
CN112708732A (en) * 2020-12-10 2021-04-27 钢铁研究总院 High-frequency induction local tempering heat treatment method for high-nitrogen stainless bearing steel

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101301351B1 (en) * 2005-12-26 2013-08-29 주식회사 포스코 Method of manufacturing austenitic stainlesss steel having high strength and ductility

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112280952A (en) * 2020-11-23 2021-01-29 浙江宝武钢铁有限公司 Heat treatment process of high-chromium-nitrogen nickel-free stainless steel
CN112708732A (en) * 2020-12-10 2021-04-27 钢铁研究总院 High-frequency induction local tempering heat treatment method for high-nitrogen stainless bearing steel
CN112708732B (en) * 2020-12-10 2022-05-13 钢铁研究总院 High-frequency induction local tempering heat treatment method for high-nitrogen stainless bearing steel

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