DE69937786D1 - Vereinfachtes verfahren zur pfannenraffination - Google Patents

Vereinfachtes verfahren zur pfannenraffination

Info

Publication number
DE69937786D1
DE69937786D1 DE69937786T DE69937786T DE69937786D1 DE 69937786 D1 DE69937786 D1 DE 69937786D1 DE 69937786 T DE69937786 T DE 69937786T DE 69937786 T DE69937786 T DE 69937786T DE 69937786 D1 DE69937786 D1 DE 69937786D1
Authority
DE
Germany
Prior art keywords
pfrain
refining
simplified method
simplified
pfrain refining
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE69937786T
Other languages
English (en)
Other versions
DE69937786T2 (de
Inventor
Shinya Kitamura
Ken-Ichiro Naito
Hikofumi Taniishi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Application granted granted Critical
Publication of DE69937786D1 publication Critical patent/DE69937786D1/de
Publication of DE69937786T2 publication Critical patent/DE69937786T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • C21C7/0075—Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/0604—Shaping the laser beam, e.g. by masks or multi-focusing by a combination of beams
    • B23K26/0619—Shaping the laser beam, e.g. by masks or multi-focusing by a combination of beams with spots located on opposed surfaces of the workpiece
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B23K26/362—Laser etching
    • B23K26/364—Laser etching for making a groove or trench, e.g. for scribing a break initiation groove
    • 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
    • C21C7/068—Decarburising
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1294—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a localized treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/02—Iron or ferrous alloys
    • B23K2103/04—Steel or steel alloys
    • 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
    • F27D3/16—Introducing a fluid jet or current into the charge
    • F27D2003/168—Introducing a fluid jet or current into the charge through a lance
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
DE69937786T 1998-08-26 1999-07-27 Verfahren zur einfachen pfannenraffination Expired - Lifetime DE69937786T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP10239332A JP2000073118A (ja) 1998-08-26 1998-08-26 簡易取鍋精錬方法
JP23933298 1998-08-26
PCT/JP1999/004022 WO2000012768A1 (fr) 1998-08-26 1999-07-27 Procede simple d'affinage en coulee continue

Publications (2)

Publication Number Publication Date
DE69937786D1 true DE69937786D1 (de) 2008-01-31
DE69937786T2 DE69937786T2 (de) 2008-04-30

Family

ID=17043163

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69937786T Expired - Lifetime DE69937786T2 (de) 1998-08-26 1999-07-27 Verfahren zur einfachen pfannenraffination

Country Status (11)

Country Link
US (1) US6309443B1 (de)
EP (1) EP1026266B1 (de)
JP (1) JP2000073118A (de)
KR (1) KR100334945B1 (de)
CN (1) CN1090241C (de)
AU (1) AU733778B2 (de)
BR (1) BR9906774A (de)
CA (1) CA2306887C (de)
DE (1) DE69937786T2 (de)
TW (1) TW410235B (de)
WO (1) WO2000012768A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100518756B1 (ko) * 2001-12-26 2005-10-06 주식회사 포스코 탈황제 분사에 사용되는 벤추리형 랜스 노즐
WO2008056835A1 (en) * 2006-11-06 2008-05-15 Posco Engineering & Construction Co., Ltd. An apparatus for moving the snorkel in chemical heating in snorkel of refining utility
KR102088446B1 (ko) * 2017-12-13 2020-03-12 주식회사 포스코 랜스
CN115090867B (zh) * 2022-07-18 2023-11-24 江苏盐电铸业有限公司 一种铸件浇注***及其浇注方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06278639A (ja) * 1993-03-25 1994-10-04 Mazda Motor Corp 車両の制御装置
JP2897639B2 (ja) * 1994-04-05 1999-05-31 住友金属工業株式会社 極低硫鋼の精錬方法
JP3410553B2 (ja) * 1994-07-27 2003-05-26 新日本製鐵株式会社 含クロム溶鋼の脱炭精錬法
US5548241A (en) * 1994-12-20 1996-08-20 Sgs-Thomson Microelectronics, Inc. Voltage reference circuit using an offset compensating current source
KR100227066B1 (ko) * 1995-01-06 1999-10-15 아사무라 타카싯 탈탄 특성이 뛰어난 전로 상취 정련 방법 및 전로용 상취 랜스
JPH08260029A (ja) * 1995-03-23 1996-10-08 Sumitomo Metal Ind Ltd 真空脱ガス槽内２次燃焼用上吹酸素ランス
JPH08278639A (ja) * 1995-04-05 1996-10-22 Konica Corp カラー画像形成装置
JP2985720B2 (ja) * 1995-04-10 1999-12-06 住友金属工業株式会社 極低炭素鋼の真空精錬方法
JPH0949013A (ja) * 1995-08-04 1997-02-18 Nippon Steel Corp 真空脱ガス装置による溶鋼の精錬方法及び真空脱ガス装置
KR100214927B1 (ko) * 1995-08-01 1999-08-02 아사무라 타카싯 용강의 진공 정련 방법
JP3526687B2 (ja) * 1996-03-25 2004-05-17 新日本製鐵株式会社 低炭素鋼の精錬方法

Also Published As

Publication number Publication date
EP1026266A4 (de) 2005-05-18
CA2306887C (en) 2004-11-09
BR9906774A (pt) 2000-09-26
CN1275169A (zh) 2000-11-29
EP1026266A1 (de) 2000-08-09
KR100334945B1 (ko) 2002-05-04
US6309443B1 (en) 2001-10-30
TW410235B (en) 2000-11-01
DE69937786T2 (de) 2008-04-30
EP1026266B1 (de) 2007-12-19
CN1090241C (zh) 2002-09-04
AU4802399A (en) 2000-03-21
KR20010031398A (ko) 2001-04-16
WO2000012768A1 (fr) 2000-03-09
AU733778B2 (en) 2001-05-24
CA2306887A1 (en) 2000-03-09
JP2000073118A (ja) 2000-03-07

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