KR100362659B1 - 해양구조물용후판중탄소강의제조방법 - Google Patents
해양구조물용후판중탄소강의제조방법 Download PDFInfo
- Publication number
- KR100362659B1 KR100362659B1 KR10-1998-0051572A KR19980051572A KR100362659B1 KR 100362659 B1 KR100362659 B1 KR 100362659B1 KR 19980051572 A KR19980051572 A KR 19980051572A KR 100362659 B1 KR100362659 B1 KR 100362659B1
- Authority
- KR
- South Korea
- Prior art keywords
- molten steel
- steel
- casting
- less
- mold
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
-
- 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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Continuous Casting (AREA)
Abstract
Description
Claims (2)
- 중량%로, C: 0.12~0.17%, Si: 0.30~0.40%, Mn: 1.30~1.55%, P: 0.025%이하, S: 0.005%이하, 가용성 Al: 0.020~0.050%, Nb: 0.020~0.040%, Cu: 0.20~0.30%, Ni: 0.10~0.20%, 잔부 Fe 및 기타 불가피한 불순물로 조성되도록 전로 정련하고, 정련된 용강을 탈가스 처리하고, 탈가스 처리된 용강을 턴디쉬 및 주형에 주입하여 연주기에 의해 연속주조하는 강의 제조방법에 있어서,상기 용강중의 B함량은 1ppm이하가 되도록 전로 정련한 다음, 정련된 용강을 10-2torr이하에서 적어도 20분간 탈가스 처리하는 단계;탈가스 처리된 용강을 턴디쉬의 과열도(주조온도-용강의 이론응고온도)가 13~18℃ 범위가 되도록 가열하여 턴디쉬내에 장입하는 단계;연속주조 주형의 테이퍼를 1.05~1.15%로 부여한 주형에 상기 용강을 주입하면서 주조속도를 0.95~1.05m/분의 범위로 하여 연속주조하는 단계; 및연속주조되어 주형밑으로 빠져나와 2차냉각대에 이르는 주편에 0.45~0.50ℓ/Kg의 냉각수를 살수하여 2차냉각하는 단계;를 포함하여 구성됨을 특징으로 하는 제조방법
- 제1항에 있어서, 상기 전로 정련단계에서 용강의 용선비를 100%로 함을 특징으로 하는 방법
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-1998-0051572A KR100362659B1 (ko) | 1998-11-28 | 1998-11-28 | 해양구조물용후판중탄소강의제조방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-1998-0051572A KR100362659B1 (ko) | 1998-11-28 | 1998-11-28 | 해양구조물용후판중탄소강의제조방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20000034287A KR20000034287A (ko) | 2000-06-15 |
KR100362659B1 true KR100362659B1 (ko) | 2003-02-05 |
Family
ID=19560241
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR10-1998-0051572A KR100362659B1 (ko) | 1998-11-28 | 1998-11-28 | 해양구조물용후판중탄소강의제조방법 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR100362659B1 (ko) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100825571B1 (ko) * | 2001-11-16 | 2008-04-25 | 주식회사 포스코 | Lng탱크용 고니켈 함유강의 연속주조방법 |
-
1998
- 1998-11-28 KR KR10-1998-0051572A patent/KR100362659B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR20000034287A (ko) | 2000-06-15 |
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