KR100406394B1 - 진공탈가스처리시가탄제투입에의한극저탄소강의정련방법 - Google Patents
진공탈가스처리시가탄제투입에의한극저탄소강의정련방법 Download PDFInfo
- Publication number
- KR100406394B1 KR100406394B1 KR10-1998-0054382A KR19980054382A KR100406394B1 KR 100406394 B1 KR100406394 B1 KR 100406394B1 KR 19980054382 A KR19980054382 A KR 19980054382A KR 100406394 B1 KR100406394 B1 KR 100406394B1
- Authority
- KR
- South Korea
- Prior art keywords
- molten steel
- refining
- decarburization
- low carbon
- carbon steel
- Prior art date
Links
Classifications
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
Description
Claims (1)
- 레이들에 수강되어 있는 용강을 진공탈가스설비의 진공조내로 환류시켜 탈탄 및 탈산처리하는 정련방법에 있어서,상기 탈탄처리전 용존산소량이 400 ppm이상의 경우 진공조내로 용강 1톤당 0.09∼0.28Kg의 가탄제를 탈탄처리중에 투입하며, 상기 가탄제의 투입은 환류개시후 2∼5분내의 탈탄처리중 1회에 용강 1톤당 0.03∼0.047Kg으로 분할투입하는 것을 특징으로 하는 진공탈가스처리시 가탄제투입에 의한 극저탄소강의 정련방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-1998-0054382A KR100406394B1 (ko) | 1998-12-11 | 1998-12-11 | 진공탈가스처리시가탄제투입에의한극저탄소강의정련방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-1998-0054382A KR100406394B1 (ko) | 1998-12-11 | 1998-12-11 | 진공탈가스처리시가탄제투입에의한극저탄소강의정련방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20000039139A KR20000039139A (ko) | 2000-07-05 |
KR100406394B1 true KR100406394B1 (ko) | 2004-03-22 |
Family
ID=19562357
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR10-1998-0054382A KR100406394B1 (ko) | 1998-12-11 | 1998-12-11 | 진공탈가스처리시가탄제투입에의한극저탄소강의정련방법 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR100406394B1 (ko) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100782707B1 (ko) * | 2001-12-24 | 2007-12-07 | 주식회사 포스코 | 제강공정에서 용강의 재산화 방지방법 |
KR100916099B1 (ko) * | 2002-12-27 | 2009-09-08 | 주식회사 포스코 | 중저탄소강 제조를 위한 용강의 정련방법 |
KR100847776B1 (ko) | 2006-12-29 | 2008-07-23 | 주식회사 포스코 | 진공 탈가스 공정의 정련방법 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5311811A (en) * | 1976-07-20 | 1978-02-02 | Kubota Ltd | Carburizing method for molten steel |
KR950018513A (ko) * | 1993-12-28 | 1995-07-22 | 조말수 | 가탄제 및 페로크롬 다량투입강의 래들내 정련방법 |
-
1998
- 1998-12-11 KR KR10-1998-0054382A patent/KR100406394B1/ko not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5311811A (en) * | 1976-07-20 | 1978-02-02 | Kubota Ltd | Carburizing method for molten steel |
KR950018513A (ko) * | 1993-12-28 | 1995-07-22 | 조말수 | 가탄제 및 페로크롬 다량투입강의 래들내 정련방법 |
Also Published As
Publication number | Publication date |
---|---|
KR20000039139A (ko) | 2000-07-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR101074895B1 (ko) | 용강의 탈질방법 | |
KR100406394B1 (ko) | 진공탈가스처리시가탄제투입에의한극저탄소강의정련방법 | |
JP2776118B2 (ja) | 無方向性電磁鋼板材の溶製方法 | |
JP2020180341A (ja) | 極低窒素鋼の溶製方法 | |
JP5831194B2 (ja) | マンガン含有低炭素鋼の溶製方法 | |
KR101796088B1 (ko) | 용강의 정련방법 | |
KR100328935B1 (ko) | 내수소유기균열강의내수소유기균열성향상을위한제강정련방법 | |
KR100422886B1 (ko) | 용강의 정련 방법 및 정련 장치 | |
JP7319548B2 (ja) | 溶鋼の脱硫方法 | |
KR100925598B1 (ko) | 회송용강의 정련방법 | |
JP7468567B2 (ja) | 溶鋼の脱窒処理方法 | |
KR100328031B1 (ko) | 극저탄소강용용강의청정도향상을위한정련방법 | |
JPS63143216A (ja) | 極低炭素・低窒素鋼の溶製方法 | |
KR100879740B1 (ko) | 용강의 정련방법 | |
KR20030089955A (ko) | 탈산 용강 중의 질소 저감 방법 | |
JP2000212641A (ja) | 溶鋼の高速真空精錬方法 | |
KR100406434B1 (ko) | 극저탄소강 제조시 철-실리콘을 사용한 탈산방법 | |
KR100402005B1 (ko) | 청정도가 우수한 극저탄소 알루미늄 탈산강의 정련방법 | |
JP2962163B2 (ja) | 高清浄極低炭素鋼の溶製方法 | |
JPH11293329A (ja) | 清浄性に優れた極低炭素Siキルド鋼の製造方法 | |
JP4020125B2 (ja) | 高清浄度鋼の溶製方法 | |
JPH08120325A (ja) | 高清浄性極低炭素鋼の製造方法 | |
JPH0941028A (ja) | 高清浄性極低炭素鋼の製造方法 | |
JPH05209214A (ja) | Rhによる極低炭素, 極低窒素鋼の溶製方法 | |
KR20050009781A (ko) | 진공 탈가스 장치에서의 용강 탈류방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20121101 Year of fee payment: 10 |
|
FPAY | Annual fee payment |
Payment date: 20131105 Year of fee payment: 11 |
|
FPAY | Annual fee payment |
Payment date: 20141105 Year of fee payment: 12 |
|
FPAY | Annual fee payment |
Payment date: 20151104 Year of fee payment: 13 |
|
FPAY | Annual fee payment |
Payment date: 20161107 Year of fee payment: 14 |
|
FPAY | Annual fee payment |
Payment date: 20171107 Year of fee payment: 15 |
|
LAPS | Lapse due to unpaid annual fee |