KR20160095064A - 강 스트립의 연속 열처리를 위한 방법 및 장치 - Google Patents
강 스트립의 연속 열처리를 위한 방법 및 장치 Download PDFInfo
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- KR20160095064A KR20160095064A KR1020167017915A KR20167017915A KR20160095064A KR 20160095064 A KR20160095064 A KR 20160095064A KR 1020167017915 A KR1020167017915 A KR 1020167017915A KR 20167017915 A KR20167017915 A KR 20167017915A KR 20160095064 A KR20160095064 A KR 20160095064A
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- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 11
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- 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
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- 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
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- C23C2/06—Zinc or cadmium or alloys based thereon
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
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Abstract
Description
- 도 1은 강 스트립의 열처리를 위한 선행기술에 따르는 연속적 라인의 개략도이고;
- 도 2는 강 스트립의 열처리를 위한 본 발명에 따르는 연속적 라인의 도 1과 유사한 개략도이고;
- 도 3은 제어 알고리즘에 의해 제공된 분무 노즐의 제어를 위한 체커보드 타입 구역들을 갖는 강 스트립의 수직 부분의 정면도이고;
- 도 4는 상기 스트립의 각종 냉각 곡선의 도식적 표현으로, 횡좌표에 시간이 제공되고 종좌표에 스트립 온도가 제공된다.
Claims (17)
- 강 스트립의 연속적 열처리를 위한 방법으로서, 여기서,
- 상기 스트립은 연속적 열처리 챔버들을 통과시키고,
- 상기 스트립의, 특히 200℃/sec보다 큰 급속 냉각을, 상기 스트립 위로 액체를 분무함으로써, 기체와 액체로 구성된 유체를 분무함으로써, 또는 기체와 액체의 미스트형 조합물을 분무함으로써, 상기 챔버들 중의 적어도 하나에서 수행하며,
- 상기 급속 냉각 후에, 보호 금속 층을 딥 코팅에 의해 상기 스트립으로 침착시키며,
상기 방법에서,
- 상기 스트립의 상기 냉각을 위해 분무되는 유체는, 용융 도금(hot-dip) 금속 코팅 조작 동안의 표면 결함들을 감소시키거나 제거하기 위하여, 상기 스트립의 산화를 제한시키고 상기 스트립 위에 형성될 수 있는 산화물을 감소시키기 위해, 처리될 강 내에 함유된 철 산화물 또는 기타 합금 원소들의 산화물에 관한 산세척 성질(pickling property)을 갖는 유체이고,
- 상기 유체는, 분무된 유체의 기계적 작용 및 산세척 성질의 조합된 효과가 상기 스트립의 표면에서 산화물들의 층을 환원시키도록, 가압하에 상기 스트립으로부터 이격되어 분무되며,
- 냉각 말미에서의 상기 스트립의 온도는 목적하는 처리 사이클을 달성하는데 필요한 온도, 특히 200℃ 내지 750℃, 통상적으로는 200℃ 이상이다
라는 특징을 갖는, 방법. - 제1항에 있어서, 제품의 목적하는 방법 또는 목적하는 품질의 제품과 양립가능한 잔여 산화물의 양을 수득하기 위하여, 상기 환원 방법의 파라미터의 제어, 특히 상기 스트립 상으로의 유체의 분무를 위한 시스템의 사용을 특징으로 하는, 방법.
- 제1항 또는 제2항에 있어서, 상기 냉각 유체가 노즐에 의해 상기 스트립 위로 분무되며; 각각의 노즐에 의해 그리고 수행되어야 하는 야금 방법의 함수로서 이론적인 냉각 곡선을 생성시키기 위한 노즐 너비의 각각의 부분에 대해 상기 스트립 위로 주입되는 액체의 양을 조정함으로써 상기 스트립의 냉각을 위한 파라미터를 조정함을 특징으로 하는, 방법.
- 제1항 내지 제3항 중의 어느 한 항에 있어서, 상기 스트립 위로 분무되는 산세척 성질을 갖는 액체가 5 미만의 pH를 갖는 산 용액, 특히 포름산 또는 붕산의 용액임을 특징으로 하는, 방법.
- 제1항 내지 제4항 중의 어느 한 항에 있어서, 상기 스트립 위로 분무되는 상기 액체가 첨가제, 특히 계면활성제 또는 습윤제, 특히 부식 억제제, 특히 벤조트리아졸을 포함함을 특징으로 하는, 방법.
- 제1항 내지 제5항 중의 어느 한 항에 있어서, 상기 액체가, 저압 방법을 위해 1bar 미만의 압력하에 상기 스트립으로부터 40 내지 250mm로 이격되어 분무됨을 특징으로 하는, 방법.
- 제1항 내지 제5항 중의 어느 한 항에 있어서, 상기 액체가, 고압 방법을 위해 5bar 초과의 압력하에 상기 스트립으로부터 40 내지 250mm로 이격되어 분무됨을 특징으로 하는, 방법.
- 제1항에 있어서, 급속 냉각 구역의 상부(upstream)에 위치한 가열 구역이, 특히 5% 미만의 수소 함량을 갖는 매우 환원적이지는 않는 대기에, 또는 공기 중에 존재하고, 이에 따라 산화물의 형성이 가능하게 되고, 산화물들의 층은 상기 가열 챔버(들) 내에서 열 교환의 효율을 개선시키고, 이어서, 형성된 이들 산화물은 상기 냉각 유체의 분무에 의해 환원되어, 제품의 목적하는 방법 또는 목적하는 품질의 제품과 양립가능한 잔여 산화물의 양을 수득하는 것을 특징으로 하는, 방법.
- 제1항에 있어서, 상기 냉각 유체에 의해 냉각되는 상기 스트립 길이가, 상기 라인의 속도의 함수 또는 상기 스트립의 특징의 함수 또는 상기 스트립의 주입구와 배출구 온도의 함수로서 조정됨을 특징으로 하는, 방법.
- 제2항 또는 제3항에 있어서, 종방향 및 횡방향 냉각 기울기를 조정하기 위해, 상기 스트립의 표면에서의 주름의 형성의 위험을 계산하기 위한 알고리즘을 사용함을 특징으로 하는, 방법.
- 제1항에 따르는 방법을 수행하기 위한, 강 스트립을 위한 연속적 열처리 라인으로서, 상기 라인은
- 상기 스트립이 통과하는 연속적 열처리 챔버들,
- 특히 200℃/sec를 초과하는, 급속 냉각을 위한 수단을 포함하는 챔버들 중의 적어도 하나로서, 이들 냉각 수단은 액체를 상기 스트립으로 분무하기 위하거나, 기체와 액체로 구성된 유체를 분무하기 위하거나, 또는 기체와 액체의 미스트형 조합물을 분무하기 위한 노즐을 포함하는, 상기 챔버들 중의 적어도 하나, 및
- 상기 챔버 뒤에, 상기 스트립 상에 보호 층을 침착하기 위한 장비, 특히 용융 도금 금속 코팅 장비
를 포함하며,
당해 라인은, 이것이, 처리될 강 내에 함유된 철 산화물 또는 기타 합금 원소들의 산화물에 대해 산세척 성질을 갖는 액체(이는 상기 스트립 위에 형성될 수 있다), 특히 5 미만의 pH를 갖는 산 용액을 갖는 분무 노즐을 공급하기 위한 수단을 포함하는 것을 특징으로 하며,
노즐 공급 압력, 및 상기 노즐로부터 상기 스트립까지의 거리는 서로 독립적으로 충분해서, 분무된 액체의 기계적 작용과 산세척 성질의 조합된 효과가 처리될 강 내에 함유된 철 산화물 또는 기타 합금 원소들의 산화물의 층(이는, 스트립 온도를 유지하면서, 냉각 말미에, 상기 스트립 위에 형성될 수 있고, 이는 상기 보호 층의 침착에 매우 충분하다)을 제거함을 특징으로 하는, 강 스트립을 위한 연속적 열처리 라인. - 제9항에 있어서, 급속 냉각 구역의 상부에 위치한 처리 구역이, 특히 5% 미만의 수소 함량을 갖는 환원적이지 않거나 매우 환원적이지는 않는 대기에, 또는 공기 중에 존재하여, 가열 동안의 상기 스트립 상에서의 산화물의 형성, 상기 냉각 유체의 분무에 의해 수행되는 이들 산화물의 환원을 촉진시켜, 제품의 목적하는 방법 또는 목적하는 품질의 제품과 양립가능한 잔여 산화물의 양을 수득하는, 라인.
- 제11항 또는 제12항에 있어서, 상기 라인이, 냉각 챔버(6)의 주입구 및 배출구에 적어도 하나의 대기 분리 밀봉재(14, 16)를 포함하여, 습윤 구역을 형성하는 당해 챔버를 단리시키고 상기 상부 챔버(5)와 하부(downstream) 챔버(8)는 무수 대기 내에 존재함을 특징으로 하는, 라인.
- 제11항 내지 제13항 중의 어느 한 항에 있어서, 냉각 유체를 분무하기 위한 노즐의 제어가 체커보드 타입 제어 알고리즘에 의해 제공되며, 이는, 상기 스트립의 표면에서의 변형의 발생을 줄이기 위해, 상기 스트립의 축에 평행한 방향 및 상기 스트립의 축에 직각인 방향을 따라 상기 냉각 구역에 존재하는 스트립의 섹션의 냉각을 제어하는 것을 가능하게 함을 특징으로 하는, 라인.
- 제11항 내지 제14항 중의 어느 한 항에 있어서, 상기 라인이, 상기 급속 냉각 구역의 배출구에서 상기 스트립을 세정 및 건조하기 위한 구역이 장착되어 있음을 특징으로 하는, 라인.
- 제11항 내지 제15항 중의 어느 한 항에 있어서, 상기 라인이, 상기 스트립에 의한 액체의 비말동반을 제한시키기 위해, 상기 습식 냉각의 배출구에 에어 나이프(air knife), 대기 나이프(atmosphere knife) 또는 액체 나이프가 장착되어 있음을 특징으로 하는, 라인.
- 제13항에 있어서, 각각의 단리 밀봉재가 밀봉재(13, 15) 내의 기체의 흡인 디바이스(aspiration device)를 포함함을 특징으로 하는, 라인.
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CN102031474A (zh) * | 2010-12-07 | 2011-04-27 | 重庆万达薄板有限公司 | 高强度热浸镀锌钢带生产方法 |
JP5071551B2 (ja) * | 2010-12-17 | 2012-11-14 | Jfeスチール株式会社 | 鋼帯の連続焼鈍方法、溶融亜鉛めっき方法 |
JP5505430B2 (ja) * | 2012-01-17 | 2014-05-28 | Jfeスチール株式会社 | 鋼帯の連続焼鈍炉及び連続焼鈍方法 |
JP5510495B2 (ja) * | 2012-05-24 | 2014-06-04 | Jfeスチール株式会社 | 鋼帯の連続焼鈍炉、連続焼鈍方法、連続溶融亜鉛めっき設備及び溶融亜鉛めっき鋼帯の製造方法 |
JP5505461B2 (ja) * | 2012-05-24 | 2014-05-28 | Jfeスチール株式会社 | 鋼帯の連続焼鈍炉、鋼帯の連続焼鈍方法、連続溶融亜鉛めっき設備及び溶融亜鉛めっき鋼帯の製造方法 |
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- 2013-12-05 FR FR1362139A patent/FR3014447B1/fr not_active Expired - Fee Related
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2014
- 2014-11-27 CN CN201480066167.6A patent/CN105793446B/zh active Active
- 2014-11-27 EP EP14815057.6A patent/EP3077554B1/fr active Active
- 2014-11-27 ES ES14815057T patent/ES2764095T3/es active Active
- 2014-11-27 KR KR1020167017915A patent/KR102317928B1/ko active Active
- 2014-11-27 WO PCT/IB2014/066380 patent/WO2015083047A1/fr active Application Filing
- 2014-11-27 PL PL14815057T patent/PL3077554T3/pl unknown
- 2014-11-27 US US15/101,137 patent/US10041140B2/en active Active
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2018
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JPS5891130A (ja) * | 1981-11-24 | 1983-05-31 | Nippon Kokan Kk <Nkk> | 連続焼鈍におけるストリツプの冷却方法 |
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Also Published As
Publication number | Publication date |
---|---|
US11193181B2 (en) | 2021-12-07 |
US20180312938A1 (en) | 2018-11-01 |
FR3014447A1 (fr) | 2015-06-12 |
PL3077554T3 (pl) | 2020-05-18 |
ES2764095T3 (es) | 2020-06-02 |
EP3077554A1 (fr) | 2016-10-12 |
CN105793446B (zh) | 2018-07-27 |
US20160304984A1 (en) | 2016-10-20 |
KR102317928B9 (ko) | 2024-01-08 |
EP3077554B1 (fr) | 2019-10-02 |
US10041140B2 (en) | 2018-08-07 |
FR3014447B1 (fr) | 2016-02-05 |
KR102317928B1 (ko) | 2021-10-28 |
CN105793446A (zh) | 2016-07-20 |
WO2015083047A1 (fr) | 2015-06-11 |
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