KR100916098B1 - 칼슘 함유 파이프 제조용 강재 정련방법 - Google Patents
칼슘 함유 파이프 제조용 강재 정련방법 Download PDFInfo
- Publication number
- KR100916098B1 KR100916098B1 KR1020020083137A KR20020083137A KR100916098B1 KR 100916098 B1 KR100916098 B1 KR 100916098B1 KR 1020020083137 A KR1020020083137 A KR 1020020083137A KR 20020083137 A KR20020083137 A KR 20020083137A KR 100916098 B1 KR100916098 B1 KR 100916098B1
- Authority
- KR
- South Korea
- Prior art keywords
- steel
- wire
- molten steel
- refining
- weight
- 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
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/072—Treatment with gases
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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
- C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
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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
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/0025—Charging or loading melting furnaces with material in the solid state
- F27D3/0026—Introducing additives into the melt
-
- 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
- F27D27/00—Stirring devices for molten material
- F27D2027/002—Gas stirring
Abstract
Description
Claims (1)
- C 0.02~0.12중량%, Si 0.1~0.3중량%, Al 0.01~0.04중량% 및 T.Ca 10~40ppm을 함유하는 파이프 제조용 강재를 정련함에 있어서,전로(1)에서 출강된 용강(2)을 티밍 레이들(3)로 출강하면서 출강류(4)에 가탄제, 페로 실리콘 및 알루미늄을 첨가하는 단계;상기 용강(2)을 담은 티밍 레이들(3)을 Ca-Si 와이어(6) 투입 및 Ar 저취 교반이 가능한 정련장치로 이송하고 저취 노즐(5)을 통해 아르곤(Ar)을 취입하지 않거나 최대 분당 0.2Nm3의 유속으로 취입하면서 외경이 9~15mm이고 내부에 Ca-Si을 내장한 와이어(6)를 분당 180~250m 속도로 첨가하는 단계; 및상기 Ca-Si 와이어 첨가가 종료된 후 저취 노즐(5)을 통해 Ar을 분당 0.2~1.0Nm3 유속으로 3~10분 동안 취입하여 용강을 교반하는 단계를 포함하는 것을 특징으로 하는 칼슘 함유 파이프 제조용 강재 정련방법
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020020083137A KR100916098B1 (ko) | 2002-12-24 | 2002-12-24 | 칼슘 함유 파이프 제조용 강재 정련방법 |
Applications Claiming Priority (1)
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---|---|---|---|
KR1020020083137A KR100916098B1 (ko) | 2002-12-24 | 2002-12-24 | 칼슘 함유 파이프 제조용 강재 정련방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20040056616A KR20040056616A (ko) | 2004-07-01 |
KR100916098B1 true KR100916098B1 (ko) | 2009-09-08 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020020083137A KR100916098B1 (ko) | 2002-12-24 | 2002-12-24 | 칼슘 함유 파이프 제조용 강재 정련방법 |
Country Status (1)
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KR (1) | KR100916098B1 (ko) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101899691B1 (ko) * | 2016-12-23 | 2018-10-31 | 주식회사 포스코 | 수소유기균열 저항성이 우수한 압력용기용 강재 및 그 제조방법 |
CN107805682A (zh) * | 2017-10-24 | 2018-03-16 | 芜湖新兴铸管有限责任公司 | 管钢的炼制方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57171616A (en) | 1981-04-15 | 1982-10-22 | Sumitomo Metal Ind Ltd | Production of clean steel |
JPH04259352A (ja) * | 1991-02-14 | 1992-09-14 | Nkk Corp | 耐水素誘起割れ性の優れた鋼材およびその製造方法 |
KR20020042126A (ko) * | 2000-11-30 | 2002-06-05 | 이구택 | 극저류강의 제조방법 |
KR100328935B1 (ko) * | 1997-12-15 | 2002-08-27 | 포항종합제철 주식회사 | 내수소유기균열강의내수소유기균열성향상을위한제강정련방법 |
-
2002
- 2002-12-24 KR KR1020020083137A patent/KR100916098B1/ko active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57171616A (en) | 1981-04-15 | 1982-10-22 | Sumitomo Metal Ind Ltd | Production of clean steel |
JPH04259352A (ja) * | 1991-02-14 | 1992-09-14 | Nkk Corp | 耐水素誘起割れ性の優れた鋼材およびその製造方法 |
KR100328935B1 (ko) * | 1997-12-15 | 2002-08-27 | 포항종합제철 주식회사 | 내수소유기균열강의내수소유기균열성향상을위한제강정련방법 |
KR20020042126A (ko) * | 2000-11-30 | 2002-06-05 | 이구택 | 극저류강의 제조방법 |
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Publication number | Publication date |
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KR20040056616A (ko) | 2004-07-01 |
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