DE2803939C2 - - Google Patents

Info

Publication number
DE2803939C2
DE2803939C2 DE2803939A DE2803939A DE2803939C2 DE 2803939 C2 DE2803939 C2 DE 2803939C2 DE 2803939 A DE2803939 A DE 2803939A DE 2803939 A DE2803939 A DE 2803939A DE 2803939 C2 DE2803939 C2 DE 2803939C2
Authority
DE
Germany
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
Application number
DE2803939A
Other versions
DE2803939A1 (de
Inventor
Hiroyuki Takarazuka Jp Kaito
Takashi Ohtani
Shoji Ashiya Jp Iwaoka
Yukio Oguchi
Shuya Yano
Akio Chiba Jp Ejima
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.)
JFE Steel Corp
Original Assignee
Kawasaki 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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Publication of DE2803939A1 publication Critical patent/DE2803939A1/de
Application granted granted Critical
Publication of DE2803939C2 publication Critical patent/DE2803939C2/de
Granted 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
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/068—Decarburising
    • C21C7/0685—Decarburising of stainless steel
    • 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
    • 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)
DE19782803939 1977-01-31 1978-01-30 Verfahren zum denitrieren einer hochchromhaltigen stahlschmelze auf einen stickstoffgehalt von nicht mehr als 0,0040 % Granted DE2803939A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP871677A JPS5394214A (en) 1977-01-31 1977-01-31 Denitriding method of high chrome molten steel with small chrome loss

Publications (2)

Publication Number Publication Date
DE2803939A1 DE2803939A1 (de) 1978-08-03
DE2803939C2 true DE2803939C2 (de) 1982-10-07

Family

ID=11700649

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19782803939 Granted DE2803939A1 (de) 1977-01-31 1978-01-30 Verfahren zum denitrieren einer hochchromhaltigen stahlschmelze auf einen stickstoffgehalt von nicht mehr als 0,0040 %

Country Status (4)

Country Link
US (1) US4154602A (de)
JP (1) JPS5394214A (de)
DE (1) DE2803939A1 (de)
FR (1) FR2378861A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE411053B (sv) * 1976-06-09 1979-11-26 Morfeldt Carl Olof Oskar Sett att forhindra att grundvatten kontamineras av skadliga emnen herrorande fran pa en ort befintliga produkter
US4410359A (en) * 1982-09-03 1983-10-18 Allegheny Ludlum Steel Corporation Process for production of stainless steel
JPS6280217A (ja) * 1985-10-03 1987-04-13 Nippon Kokan Kk <Nkk> 高純度ステンレス鋼の製造法
JP5092245B2 (ja) * 2006-02-09 2012-12-05 Ｊｆｅスチール株式会社 溶鋼の脱窒方法
UA111115C2 (uk) 2012-04-02 2016-03-25 Ейкей Стіл Пропертіс, Інк. Рентабельна феритна нержавіюча сталь
CN110484691A (zh) * 2019-07-30 2019-11-22 江苏省沙钢钢铁研究院有限公司 一种rh真空炉变枪位变流量脱碳保铬方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB971270A (en) * 1962-03-22 1964-09-30 British Oxygen Co Ltd Removal of hydrogen from molten metal
DE2007373B2 (de) * 1970-02-18 1973-05-03 Eisenwerk-Gesellschaft Maximilianshütte mbH, 8458 Sulzbach-Rosenberg Verfahren und konverter zum herstellen ferritischer chromstaehle
FR2123212A1 (en) * 1971-01-29 1972-09-08 Creusot Loire Refinement and alloying of steel - in one furnace as one sequence of operations esp for stainless steel
DE2114600B2 (de) * 1971-03-25 1981-05-07 Vacmetal Gesellschaft für Vakuum-Metallurgie mbH, 4600 Dortmund Verfahren zur gezielten Vakuumentkohlung hochlegierter Stähle
US3788836A (en) * 1971-03-26 1974-01-29 Allegheny Ludlum Ind Inc Method of making low nitrogen alloys
US3854932A (en) * 1973-06-18 1974-12-17 Allegheny Ludlum Ind Inc Process for production of stainless steel
DE2333937C2 (de) * 1973-07-04 1975-07-17 Fried. Krupp Huettenwerke Ag, 4630 Bochum Verfahren zur Herstellung hochchromhaltiger Stähle mit niedrigstem Kohlenstoffgehalt
JPS5318323B2 (de) * 1973-12-31 1978-06-14

Also Published As

Publication number Publication date
FR2378861B1 (de) 1981-04-10
JPS5394214A (en) 1978-08-18
US4154602A (en) 1979-05-15
FR2378861A1 (fr) 1978-08-25
DE2803939A1 (de) 1978-08-03
JPS573726B2 (de) 1982-01-22

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Legal Events

Date Code Title Description
OAP Request for examination filed
OD Request for examination
D2 Grant after examination
8363 Opposition against the patent
8331 Complete revocation