KR20200103062A - Tmcp형 선박용 복상 스테인리스강 복합판의 제조방법 - Google Patents
Tmcp형 선박용 복상 스테인리스강 복합판의 제조방법 Download PDFInfo
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Abstract
Description
도 2는 본 발명 실시예 1에 따른 복합판 계면을 현미경으로 관찰한 조직도이다.
Claims (5)
- TMCP형 선박용 복상 스테인리스강 복합판의 제조 방법에 있어서,
하기 단계,
(1) 블랭크 준비: 2개의 기재 및 2개의 복합 재료를 준비하고, 완성품 복합판의 강재 종류 및 규격에 따라 기재 및 복합 강재 종류 및 규격을 결정하는 단계;
(2) 표면 연삭: 2개의 기재 및 2개의 복합 재료 중 하나의 표면, 즉 기재 및 복합 재료가 접촉하는 표면을 연마하여 표면을 금속에 완전히 노출시키는 단계;
(3) 이형제 브러싱: 2개 복합 재료가 서로 접촉하는 일면, 즉 연마되지 않은 표면에 이형제를 브러싱하며, 이형제를 균일하게 브러싱하여 평활도를 동일하게 만들어 건조 처리를 수행하는 단계;
(4) 블랭크 조립 실링: 기재 및 복합 재료를 순차적으로 쌓아서 복합 블랭크를 형성하고, 위에서 아래로 순차적으로 기재, 복합 재료, 복합 재료, 기재이며, 복합 재료의 크기는 기재보다 작고, 밀봉재를 사용해 복합 블랭크 주위의 오목홈을 실링하며, 밀봉재는 일반적인 탄소강 재질을 선택하는 단계;
(5) 전자빔 실링 및 용접: 조립된 복합 블랭크를 진공실로 이송한 후 진공실에 대하여 진공 펌핑을 수행하고, 진공실 진공도가 10×10-2Pa 이하가 되면, 진공 전자빔을 사용하여 밀봉재와 복합 블랭크 사이의 갭을 용접하는 단계;
(6) 가열: 복합 블랭크를 가열로로 이송하여 가열하고, 가열 온도는 1150 내지 1250℃이며, 총 가열 시간은 복합 블랭크 두께에 따라 8 내지 15분/cm으로 제어하고, 태핑(tapping) 온도는 1200 내지 1210℃로 제어하는 단계;
(7) 압연 및 냉각: TMCP 공정을 채택하여 압연을 수행하며, 조압연 단계의 압축비는 ≥2.0이고, 중간 블랭크의 두께는 총 압연 두께의 1.5 내지 3.0배이고, 마무리 압연 개시 온도는 950 내지 1050℃이고, 최종 압연 온도는 ≥920℃로 제어하고; 빠른 속도의 압연을 채택하며, 압연 속도는 2m/s 내지 3m/s로 압연 온도를 보장하고; 압연 후 고속 스로잉(throwing)하고 복합판을 곧바로 급속 냉각 장치에 넣어 10 내지 20℃/s의 속도로 온라인 담금질을 수행하며, 최종 냉각 온도는 400 내지 500℃인 단계;
(8) 변형 보정: 압연된 강판에 대하여 변형 보정 처리를 하고, 변형 보정 후 냉각상에서 냉각하며, 표면 온도가 300℃ 아래로 떨어지면 오프라인으로 진행하는 단계;
(9) 판 절단 및 분리: 플라즈마 또는 화염 절단 방식을 채택하여 복합판을 절단하고, 헤드, 테일 및 양면을 절단한 후, 2개 복합판 사이에서 상하 양단면 복합판을 분리시킨 다음, 단면 복합판에 대하여 변형 보정 처리를 수행하고, 표면 연마, 성능 테스트 및 패키징 처리를 거친 후, 마지막으로 단면 복합판을 복상 스테인리스강 복합판 제품으로 획득하는 단계;를 포함하는 것을 특징으로 하는 TMCP형 선박용 복상 스테인리스강 복합판의 제조방법. - 제1항에 있어서,
상기 단계 (1)에서 기재 블랭크는 저탄소 선박용 철강을 채택하며, 이의 화학 성분은 중량백분율에 따라 C≤0.18%, Si≤0.50%, Mn: 0.90 내지 1.60%, P≤0.035%, S≤0.035%, Nb: 0.020 내지 0.050%, V: 0.050 내지 0.10%, Ti≤0.020%, Alt: 0.015 내지 0.035%, Cr≤0.20%, Ni≤0.30%, Cu≤0.35%이고, 나머지는 Fe 및 소량의 불가피한 불순물인 것을 특징으로 하는 TMCP형 선박용 복상 스테인리스강 복합판의 제조방법. - 제1항에 있어서,
상기 단계 (1)에서 복합 재료 블랭크는 오스테나이트+페라이트계의 복상 스테인레스강이고, 이의 화학 성분은 중량백분율에 따라 C≤0.030, Si≤1.00, Mn≤2.00, P≤0.030, S≤0.020%, Ni: 4.50 내지 6.50%, Mo: 3.00 내지 3.50%, Cr: 22.0 내지 23.0%, N: 0.14 내지 0.20%이고, 나머지는 Fe 및 소량의 불가피한 불순물인 것을 특징으로 하는 TMCP형 선박용 복상 스테인리스강 복합판의 제조방법. - 제1항에 있어서,
상기 단계 (9)에서 복상 스테인레스강 복합판 제품의 총 두께는 10 내지 60mm이고, 이의 복합 재료의 두께는 1.0 내지 6.0mm인 것을 특징으로 하는 TMCP형 선박용 복상 스테인리스강 복합판의 제조방법. - 제1항에 있어서,
상기 단계 (4)에서, 밀봉재는 탄소강 재질을 채택하는 것을 특징으로 하는 TMCP형 선박용 복상 스테인리스강 복합판의 제조방법.
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PCT/CN2018/108997 WO2019128363A1 (zh) | 2017-12-25 | 2018-09-30 | 一种tmcp型船用双相不锈钢复合板的制备方法 |
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CN108246825A (zh) * | 2017-12-25 | 2018-07-06 | 南京钢铁股份有限公司 | 一种tmcp型船用双相不锈钢复合板的制备方法 |
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JP7054078B2 (ja) * | 2020-02-06 | 2022-04-13 | Jfeスチール株式会社 | 二相ステンレスクラッド鋼およびその製造方法 |
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JP7228755B2 (ja) * | 2020-02-19 | 2023-02-27 | Jfeスチール株式会社 | 二相ステンレスクラッド鋼板の製造方法 |
CN112643292B (zh) * | 2020-12-05 | 2023-05-12 | 安徽宝恒新材料科技有限公司 | 一种碳钢和304不锈钢单面复合板加工方法 |
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JPH07108403B2 (ja) * | 1986-09-12 | 1995-11-22 | 日本鋼管株式会社 | 多層パツク圧延方法 |
JPH1157810A (ja) * | 1997-08-14 | 1999-03-02 | Nkk Corp | チタン合金シート材の製造方法 |
CN101362148B (zh) * | 2008-09-16 | 2011-04-20 | 哈尔滨工业大学 | 一种用于异质难熔金属钼与不锈钢复合板的轧制连接方法 |
CN102069289B (zh) * | 2011-01-27 | 2012-11-14 | 东北大学 | 一种不锈钢-碳钢复合板的制备方法 |
CN102319732A (zh) * | 2011-09-07 | 2012-01-18 | 三明天尊不锈钢复合科技有限公司 | 金属复合板的真空轧制方法 |
CN103212596B (zh) * | 2013-05-10 | 2015-03-18 | 山东亚盛重工股份有限公司 | 复合板轧制前处理工艺 |
CN104138920B (zh) * | 2014-06-26 | 2017-02-22 | 济钢集团有限公司 | 一种基层材料为管线钢的轧制金属复合板制造方法 |
CN104550233B (zh) * | 2014-12-19 | 2017-01-11 | 山东钢铁股份有限公司 | 一种热轧复合坯的生产工艺 |
CN104624702B (zh) * | 2015-01-07 | 2016-08-17 | 李向民 | 一种不锈钢双面复合板的制作方法 |
CN106271414B (zh) * | 2016-08-23 | 2018-06-19 | 南京钢铁股份有限公司 | 一种tmcp型桥梁用不锈钢复合板的制备方法 |
CN108246825A (zh) * | 2017-12-25 | 2018-07-06 | 南京钢铁股份有限公司 | 一种tmcp型船用双相不锈钢复合板的制备方法 |
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