WO2017111399A1 - 마르텐사이트 함유 강판의 제조방법 및 장치 - Google Patents
마르텐사이트 함유 강판의 제조방법 및 장치 Download PDFInfo
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- WO2017111399A1 WO2017111399A1 PCT/KR2016/014817 KR2016014817W WO2017111399A1 WO 2017111399 A1 WO2017111399 A1 WO 2017111399A1 KR 2016014817 W KR2016014817 W KR 2016014817W WO 2017111399 A1 WO2017111399 A1 WO 2017111399A1
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- steel sheet
- cooling
- martensite
- coil
- steel
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- 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
- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/185—Hardening; Quenching with or without subsequent tempering from an intercritical temperature
-
- 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
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/60—Aqueous agents
-
- 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
- C21D1/62—Quenching devices
- C21D1/63—Quenching devices for bath quenching
-
- 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
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
-
- 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
- C21D9/0043—Muffle furnaces; Retort furnaces
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
-
- 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
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/68—Furnace coilers; Hot coilers
-
- 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
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
-
- 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
Definitions
- the steel sheet in the heating table is a high temperature of 800 °C or more, if quenched it quickly cools to room temperature in 1 second, the temperature difference in the longitudinal direction, the width direction occurs in the steel sheet is large, and thus the thermal stress is generated largely to deform the steel sheet.
- More preferred feed rate of the steel sheet is 400 ⁇ 600mpm.
- the feed rate of the steel sheet is 300-mpm or more, preferably 2 to 3 times faster than 300 mpm, which is 1.5 times faster than the normal continuous annealing process feed rate of 200 mpm.
- the steel strip temperature gradient during quenching and quenching is reduced to 300 ° C./meter, but in the present invention, 150 to 100 ° C./meter, thereby reducing thermal stress.
- the thermal stress is reduced to 1/3. Therefore, even if the cooling rate is the same as the cooling rate of 1000 °C / sec in the continuous continuous annealing process can be good steel sheet shape.
- the steel strip feed rate is high during cooling, the time taken to cool the entire coil is as short as about 4 minutes.
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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 Strip Materials And Filament Materials (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
Description
Claims (11)
- 수냉 시 오스테나이트의 적어도 일부가 마르텐사이트로 변태되는 강판을 코일 형태로 준비하는 단계;상기 강판 코일을 강판의 미세조직의 적어도 일부가 오스테나이트가 되도록 가열하는 단계; 및상기와 같이 가열된 강판 코일을 풀어 300mpm이상의 이송속도로 강판을 이송시키면서 500℃/sec 이상의 냉각속도로 수냉하여 상기 오스테나이트의 적어도 일부를 마르텐사이트로 변태시키는 단계를 포함하는 마르텐사이트 함유 강판의 제조방법.
- 제1항에 있어서, 상기 강판의 이송속도는 300 ~800mpm인 것을 특징으로 하는 마르텐사이트 함유 강판의 제조방법.
- 제1항 또는 제2항에 있어서, 상기 수냉 시 수냉종료온도는 Ms(마르텐사이트 변태개시온도)이하인 것을 특징으로 하는 마르텐사이트 함유 강판의 제조방법.
- 제1항 또는 제2항에 있어서, 상기 수냉 시 수냉종료온도는 Ms(마르텐사이트 변태개시온도)이하 150℃이상인 것을 특징으로 하는 마르텐사이트 함유 강판의 제조방법.
- 제1항에 있어서, 상기 강판의 냉각속도는 800 ~ 1200℃/sec인 것을 특징으로 하는 마르텐사이트 함유 강판의 제조방법.
- 제1항에 있어서, 상기 강판은 마르텐사이트 강판, 듀얼페이즈 강판 및 콤플렉스페이즈 강판 중 어느 하나인 것을 특징으로 하는 마르텐사이트 함유 강판의 제조방법.
- 제1항에 있어서, 상기 강판은 탄소: 0.05~0.4중량%, 규소: 2중량% 이하, 망간: 3 중량%이하(0% 포함), 인: 0.05중량% 이하, 황: 0.02 중량%이하, 잔부 Fe 및 기타 불순물을 포함하는 것임을 특징으로 하는 마르텐사이트 함유 강판의 제조방법.
- 강판을 코일 형태로 가열하는 가열로; 가열된 코일을 풀어주는 페이오프릴; 코일로부터 풀려 이송되는 가열된 강판을 냉각하는 냉각장치; 및 냉각된 강판을 감는 코일러를 포함하는 마르텐사이트 함유 강판의 제조장치.
- 제8항에 있어서, 상기 냉각장치는 강판의 냉각 시 500℃/sec 이상의 냉각속도를 부여하도록 구성되는 것을 특징으로 하는 마르텐사이트 함유 강판의 제조장치.
- 제8항에 있어서, 상기 냉각장치는 가열된 강판을 냉각하는 냉각액이 저장된 냉각조 및 상기 냉각액을 강 스트립을 향해 제트 분사하도록 구비되는 냉각대를 포함하는 것을 특징으로 하는 마르텐사이트 함유 강판의 제조장치.
- 제8항에 있어서, 상기 페이오프릴과 냉각장치 사이와 냉각장치와 코일러 사이에, 강판을 안내하는 안내롤러가 구비되어 있는 것을 특징으로 하는 마르텐사이트 함유 강판의 제조장치.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018532216A JP2019505667A (ja) | 2015-12-21 | 2016-12-16 | マルテンサイト含有鋼板の製造方法及び装置 |
CN201680074983.0A CN108431249A (zh) | 2015-12-21 | 2016-12-16 | 含马氏体钢板的制造方法及装置 |
EP16879266.1A EP3395964A4 (en) | 2015-12-21 | 2016-12-16 | Method and device for manufacturing martensite-containing steel sheet |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR10-2015-0183266 | 2015-12-21 | ||
KR1020150183266A KR20170089045A (ko) | 2015-12-21 | 2015-12-21 | 마르텐사이트 함유 강판의 제조방법 및 장치 |
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WO2017111399A1 true WO2017111399A1 (ko) | 2017-06-29 |
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PCT/KR2016/014817 WO2017111399A1 (ko) | 2015-12-21 | 2016-12-16 | 마르텐사이트 함유 강판의 제조방법 및 장치 |
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EP (1) | EP3395964A4 (ko) |
JP (1) | JP2019505667A (ko) |
KR (1) | KR20170089045A (ko) |
CN (1) | CN108431249A (ko) |
WO (1) | WO2017111399A1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113528932A (zh) * | 2021-05-31 | 2021-10-22 | 唐山钢铁集团高强汽车板有限公司 | 一种马氏体钢板及其制备方法 |
Families Citing this family (1)
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KR20220146637A (ko) * | 2020-04-03 | 2022-11-01 | 노벨리스 인크. | 금속의 열간 언코일링 |
Citations (5)
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JPS6184321A (ja) * | 1984-09-29 | 1986-04-28 | Trinity Ind Corp | 焼入装置 |
JPH11193418A (ja) * | 1997-12-29 | 1999-07-21 | Kobe Steel Ltd | 平坦性に優れた高強度冷延鋼板の製造方法 |
JP2002275545A (ja) * | 2001-03-15 | 2002-09-25 | Kawasaki Steel Corp | 連続焼鈍設備 |
KR20030054974A (ko) * | 2001-12-26 | 2003-07-02 | 주식회사 포스코 | 열연코일 냉각방법 |
KR20140079923A (ko) * | 2012-12-20 | 2014-06-30 | 주식회사 포스코 | 강판 열처리용 급냉 장치 |
Family Cites Families (9)
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JPS5944367B2 (ja) * | 1978-06-15 | 1984-10-29 | 日本鋼管株式会社 | 水焼入連続焼鈍法 |
US4415382A (en) * | 1981-10-13 | 1983-11-15 | Inland Steel Company | Continuous annealing apparatus and method |
CA2202616C (en) * | 1994-10-20 | 2001-01-23 | Fritz-Peter Pleschiutschnigg | Process and device for producing a steel strip with the properties of a cold-rolled product |
US20020104597A1 (en) * | 1999-07-09 | 2002-08-08 | Ipsco Enterprises Inc. | Method and apparatus for producing steel |
JP2003277833A (ja) * | 2002-03-22 | 2003-10-02 | Jfe Steel Kk | 金属板の製造方法および製造装置 |
JP2010222631A (ja) * | 2009-03-23 | 2010-10-07 | Kobe Steel Ltd | 鋼板連続焼鈍設備および鋼板連続焼鈍設備の運転方法 |
KR101376565B1 (ko) * | 2011-12-15 | 2014-04-02 | (주)포스코 | 연속 소둔라인 급냉대의 스트립 온도제어 방법 및 장치 |
DE102011056847B4 (de) * | 2011-12-22 | 2014-04-10 | Thyssenkrupp Rasselstein Gmbh | Stahlblech zur Verwendung als Verpackungsstahl sowie Verfahren zur Herstellung eines Verpackungsstahls |
JP6086089B2 (ja) * | 2014-03-27 | 2017-03-01 | Jfeスチール株式会社 | 鋼板の冷却方法 |
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2015
- 2015-12-21 KR KR1020150183266A patent/KR20170089045A/ko active Application Filing
-
2016
- 2016-12-16 EP EP16879266.1A patent/EP3395964A4/en not_active Withdrawn
- 2016-12-16 CN CN201680074983.0A patent/CN108431249A/zh active Pending
- 2016-12-16 WO PCT/KR2016/014817 patent/WO2017111399A1/ko active Application Filing
- 2016-12-16 JP JP2018532216A patent/JP2019505667A/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6184321A (ja) * | 1984-09-29 | 1986-04-28 | Trinity Ind Corp | 焼入装置 |
JPH11193418A (ja) * | 1997-12-29 | 1999-07-21 | Kobe Steel Ltd | 平坦性に優れた高強度冷延鋼板の製造方法 |
JP2002275545A (ja) * | 2001-03-15 | 2002-09-25 | Kawasaki Steel Corp | 連続焼鈍設備 |
KR20030054974A (ko) * | 2001-12-26 | 2003-07-02 | 주식회사 포스코 | 열연코일 냉각방법 |
KR20140079923A (ko) * | 2012-12-20 | 2014-06-30 | 주식회사 포스코 | 강판 열처리용 급냉 장치 |
Non-Patent Citations (1)
Title |
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See also references of EP3395964A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113528932A (zh) * | 2021-05-31 | 2021-10-22 | 唐山钢铁集团高强汽车板有限公司 | 一种马氏体钢板及其制备方法 |
Also Published As
Publication number | Publication date |
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EP3395964A1 (en) | 2018-10-31 |
KR20170089045A (ko) | 2017-08-03 |
JP2019505667A (ja) | 2019-02-28 |
EP3395964A4 (en) | 2018-12-26 |
CN108431249A (zh) | 2018-08-21 |
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