KR100916099B1 - 중저탄소강 제조를 위한 용강의 정련방법 - Google Patents
중저탄소강 제조를 위한 용강의 정련방법 Download PDFInfo
- Publication number
- KR100916099B1 KR100916099B1 KR1020020085249A KR20020085249A KR100916099B1 KR 100916099 B1 KR100916099 B1 KR 100916099B1 KR 1020020085249 A KR1020020085249 A KR 1020020085249A KR 20020085249 A KR20020085249 A KR 20020085249A KR 100916099 B1 KR100916099 B1 KR 100916099B1
- Authority
- KR
- South Korea
- Prior art keywords
- molten steel
- steel
- carbon
- refining
- degassing
- Prior art date
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/10—Handling in a vacuum
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0087—Treatment of slags covering the steel bath, e.g. for separating slag from the molten metal
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/064—Dephosphorising; Desulfurising
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0003—Monitoring the temperature or a characteristic of the charge and using it as a controlling value
Abstract
Description
용강량(톤) | 탈가스도착산소(ppm) | 탈가스도착 온도(℃) | 탈산시점(처리개시후:분) | 1차 가탄제 투입량(kg) | 탈산전 진공도(Mbar) | 2차 가탄제 투입량(Kg) | 전체처리시간(분) | ||
종 래 법 | 1 | 270.5 | 350 | 1572 | 5.1 | 30 | 55 | 25 | 23 |
2 | 270.8 | 400 | 1573 | 5.3 | 32 | 58 | 31 | 25 | |
3 | 270.4 | 430 | 1580 | 4.8 | 45 | 60 | 24 | 24 | |
4 | 270.4 | 380 | 1592 | 5.6 | 30 | 59 | 25 | 26 | |
5 | 270.2 | 300 | 1576 | 5.2 | 35 | 56 | 28 | 26 | |
6 | 269.6 | 482 | 1585 | 5.0 | 42 | 55 | 35 | 25 | |
발 명 법 | 1 | 270.5 | 350 | 1592 | 8.0 | 35 | 2.2 | 17 | |
2 | 269.4 | 300 | 1585 | 8.4 | 40 | 3.0 | 18 | ||
3 | 269.9 | 450 | 1575 | 8.3 | 36 | 2.5 | 17 | ||
4 | 270.5 | 468 | 1580 | 7.9 | 37 | 2.1 | 15 | ||
5 | 270.1 | 300 | 1598 | 8.6 | 40 | 3.1 | 16 | ||
6 | 270.3 | 486 | 1576 | 8.1 | 39 | 2.1 | 16 |
Claims (1)
- 진공탈가스 설비를 이용한 용강의 정련공정에 있어서,그 정련공정중 상기 진공탈가스 설비로부터 배출되는 배가스중 CO가스 함량이 20%이하가 될때까지 2~3Mbar의 진공도하에서 용강을 초기탈탄정련하여 용존탄소량을 100ppm이하로 제어한후 용강탈산을 실시하고, 이어, 그 진공도를 55~79Mbar로 유지하면서 가탄제를 35~40kg/270톤-용강 범위로 장입하여 용존탄소량을 0.015~0.035%로 제어하는 것을 특징으로 하는 중저탄소강 제조를 위한 용강의 정련방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020020085249A KR100916099B1 (ko) | 2002-12-27 | 2002-12-27 | 중저탄소강 제조를 위한 용강의 정련방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020020085249A KR100916099B1 (ko) | 2002-12-27 | 2002-12-27 | 중저탄소강 제조를 위한 용강의 정련방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20040059575A KR20040059575A (ko) | 2004-07-06 |
KR100916099B1 true KR100916099B1 (ko) | 2009-09-08 |
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KR1020020085249A KR100916099B1 (ko) | 2002-12-27 | 2002-12-27 | 중저탄소강 제조를 위한 용강의 정련방법 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101484947B1 (ko) * | 2013-08-30 | 2015-01-21 | 주식회사 포스코 | 중고탄소강의 제강정련방법 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100895574B1 (ko) | 2007-12-27 | 2009-04-29 | 주식회사 포스코 | 밥(bap)장 자동 장치 |
KR101516723B1 (ko) * | 2013-10-30 | 2015-05-04 | 현대제철 주식회사 | 중탄소 비조질강의 제조방법 |
CN110468254A (zh) * | 2019-09-25 | 2019-11-19 | 敬业钢铁有限公司 | 一种安全环保的真空碳块脱氧的方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08291317A (ja) * | 1995-04-20 | 1996-11-05 | Nippon Steel Corp | 中炭素Alキルド鋼の製造方法 |
KR20000039139A (ko) * | 1998-12-11 | 2000-07-05 | 이구택 | 진공탈가스처리시 가탄제투입에 의한 극저탄소강의 정련방법 |
KR20010028813A (ko) * | 1999-09-27 | 2001-04-06 | 이구택 | 극저탄소강 용강정련시의 용존탄소량 제어방법 |
JP2001152235A (ja) * | 1999-11-22 | 2001-06-05 | Sumitomo Metal Ind Ltd | 溶鉄の炭素濃度調整方法 |
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2002
- 2002-12-27 KR KR1020020085249A patent/KR100916099B1/ko active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08291317A (ja) * | 1995-04-20 | 1996-11-05 | Nippon Steel Corp | 中炭素Alキルド鋼の製造方法 |
KR20000039139A (ko) * | 1998-12-11 | 2000-07-05 | 이구택 | 진공탈가스처리시 가탄제투입에 의한 극저탄소강의 정련방법 |
KR20010028813A (ko) * | 1999-09-27 | 2001-04-06 | 이구택 | 극저탄소강 용강정련시의 용존탄소량 제어방법 |
JP2001152235A (ja) * | 1999-11-22 | 2001-06-05 | Sumitomo Metal Ind Ltd | 溶鉄の炭素濃度調整方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101484947B1 (ko) * | 2013-08-30 | 2015-01-21 | 주식회사 포스코 | 중고탄소강의 제강정련방법 |
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