GB1331564A - Process for making chromium steels - Google Patents

Process for making chromium steels

Info

Publication number
GB1331564A
GB1331564A GB2204771A GB2204771A GB1331564A GB 1331564 A GB1331564 A GB 1331564A GB 2204771 A GB2204771 A GB 2204771A GB 2204771 A GB2204771 A GB 2204771A GB 1331564 A GB1331564 A GB 1331564A
Authority
GB
United Kingdom
Prior art keywords
per cent
propane
chromium steels
inert gas
making chromium
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
Application number
GB2204771A
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.)
Eisenwerke Gesellschaf Maximilianshuette mbH
Original Assignee
Eisenwerke Gesellschaf Maximilianshuette mbH
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 Eisenwerke Gesellschaf Maximilianshuette mbH filed Critical Eisenwerke Gesellschaf Maximilianshuette mbH
Publication of GB1331564A publication Critical patent/GB1331564A/en
Expired 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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/005—Manufacture 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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/30—Regulating or controlling the blowing
    • C21C5/34—Blowing through the bath
    • 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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/48—Bottoms or tuyéres of converters
    • 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

Abstract

1331564 Refining chromium steels EISENWERK GESELLSCHAFT MAXIMILIANSHUTTE 19 April 1971 [18 Feb 1970] 22047/71 Heading C7D Steel having a Cr content of 16-30 per cent with C and N in total not exceeding 0À015 per cent is produced from a crude iron melt containing 2-6 per cent C refined under reduced pressure by blowing with nitrogen-free O 2 beneath the melt surface. An inert gas such as argon, hydrogen or propane may be mixed with the O 2 ; powdered lime may also be blown in. In a preferred embodiment, the oxygen jets are each surrounded by a jacket of inert gas, e.g. propane.
GB2204771A 1970-02-18 1971-04-19 Process for making chromium steels Expired GB1331564A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702007373 DE2007373B2 (en) 1970-02-18 1970-02-18 PROCESS AND CONVERTER FOR MANUFACTURING FERRITIC CHROME STEEL

Publications (1)

Publication Number Publication Date
GB1331564A true GB1331564A (en) 1973-09-26

Family

ID=5762597

Family Applications (2)

Application Number Title Priority Date Filing Date
GB2204771A Expired GB1331564A (en) 1970-02-18 1971-04-19 Process for making chromium steels
GB2209673A Expired GB1331565A (en) 1970-02-18 1971-04-19 Steel making converter

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB2209673A Expired GB1331565A (en) 1970-02-18 1971-04-19 Steel making converter

Country Status (5)

Country Link
US (2) US3773496A (en)
JP (1) JPS4942201B1 (en)
DE (1) DE2007373B2 (en)
FR (1) FR2130796A5 (en)
GB (2) GB1331564A (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4139370A (en) * 1972-01-13 1979-02-13 Gesellschaft Fur Elektrometallurgie Mbh Method of refining ferro-alloys
DE2243839A1 (en) * 1972-09-07 1974-03-28 Kloeckner Werke Ag PROCESS FOR MANUFACTURING LOW CARBON HIGH CHROMIC FERRITIC STEEL
FR2202162A1 (en) * 1972-10-06 1974-05-03 Uddeholms Ab Decarburising converter linings wear reduction - for decarburising molten masses with high chrome contents, esp. stainless steel
FR2216362B1 (en) * 1973-02-07 1975-10-31 Creusot Loire
SE371211B (en) * 1973-03-12 1974-11-11 Uddeholms Ab
CA1014753A (en) * 1973-03-30 1977-08-02 Karl Brotzmann Process for lowering the iron content in nickel melts
US3854932A (en) * 1973-06-18 1974-12-17 Allegheny Ludlum Ind Inc Process for production of stainless steel
US4001012A (en) * 1973-11-28 1977-01-04 United States Steel Corporation Method of producing stainless steel
JPS5318323B2 (en) * 1973-12-31 1978-06-14
FR2283229A1 (en) * 1974-08-30 1976-03-26 Uss Eng & Consult PROCESS FOR PRODUCING LOW NITROGEN STEEL
FR2357648A1 (en) * 1976-07-09 1978-02-03 Creusot Loire ROTARY CONVERTER WITH SIMULTANEOUS HEATING AND BLOWING
FR2364975A1 (en) * 1976-09-20 1978-04-14 Siderurgie Fse Inst Rech PROCESS FOR THE PREPARATION, IN THE CONVERTER, OF STAINLESS STEEL
JPS5394214A (en) * 1977-01-31 1978-08-18 Kawasaki Steel Co Denitriding method of high chrome molten steel with small chrome loss
JPS5394212A (en) * 1977-01-31 1978-08-18 Kawasaki Steel Co Method of making ultralowwcarbon*highh nitrogen chrome steel
US4174212A (en) * 1978-03-10 1979-11-13 A. Finkl & Sons Co. Method for the refining of steel
DE2821379A1 (en) * 1978-05-16 1979-11-22 Baum Verfahrenstechnik DEVICE FOR COLLECTING CONVERTER EXHAUST GAS
DE3364969D1 (en) * 1982-09-23 1986-09-04 Nat Res Dev Removing phosphorous from iron
US4783219A (en) * 1985-11-13 1988-11-08 Nippon Kokan Kabushiki Kaisha Method for melting and reducing chrome ore
CH668925A5 (en) * 1985-12-31 1989-02-15 Fischer Ag Georg TREATMENT VESSEL FOR TREATMENT OF LIQUID METAL ALLOYS.
JPS62167811A (en) * 1986-01-20 1987-07-24 Nippon Kokan Kk <Nkk> Melt reduction steel making method

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US84336A (en) * 1868-11-24 John abstee
US2068785A (en) * 1933-11-20 1937-01-26 United States Steel Corp Method of manufacturing low carbon steel
US2093666A (en) * 1934-11-23 1937-09-21 Wacker Chemie Gmbh Process for treating iron and iron alloys
US2182064A (en) * 1935-10-31 1939-12-05 Wacker Chemie Gmbh Apparatus for treating matters in hot liquid state
US2265511A (en) * 1937-12-08 1941-12-09 Brassert & Co Bessemer converter
US2855293A (en) * 1955-03-21 1958-10-07 Air Liquide Method and apparatus for treating molten metal with oxygen
US3252790A (en) * 1956-06-27 1966-05-24 Union Carbide Corp Preparation of metals and alloys
GB882676A (en) * 1958-01-29 1961-11-15 British Oxygen Co Ltd Treatment of ferrous material
GB861238A (en) * 1958-02-03 1961-02-15 Arbed Process for making steel
AT222377B (en) * 1959-10-13 1962-07-25 Balzers Hochvakuum Furnace for treating metal melts in a vacuum or in a protective gas atmosphere
US3198624A (en) * 1961-08-24 1965-08-03 Interlake Steel Corp Process for the manufacture of stainless steel
BE635868A (en) * 1962-08-07
AT237000B (en) * 1962-09-18 1964-11-25 Guszstahlwerk Witten Ag Process for the production of alloy steel
US3325160A (en) * 1963-03-06 1967-06-13 Asea Ab Vacuum-enclosed tiltable furnace
US3336132A (en) * 1964-03-09 1967-08-15 Crucible Steel Co America Stainless steel manufacturing process and equipment
DE1433443B2 (en) * 1964-05-23 1972-01-27 Fried Krupp GmbH, 4300 Essen PROCEDURES FOR MONITORING AND CONTROLLING THE OXYGEN FILLING PROCESS
FR1450718A (en) * 1965-07-12 1966-06-24 Air Liquide Improvements in metallurgical processes
US3420657A (en) * 1966-02-14 1969-01-07 Union Carbide Corp Oxygen treatment of chromium alloys
US3501290A (en) * 1966-08-29 1970-03-17 Finkl & Sons Co Method of treating molten metal with arc heat and vacuum
GB1253581A (en) * 1968-02-24 1971-11-17 Maximilianshuette Eisenwerk Improvements in processes and apparatus for making steel
US3594155A (en) * 1968-10-30 1971-07-20 Allegheny Ludlum Steel Method for dynamically controlling decarburization of steel
US3507642A (en) * 1969-06-02 1970-04-21 Allegheny Ludlum Steel Process for producing corrosion resistant steel

Also Published As

Publication number Publication date
DE2007373B2 (en) 1973-05-03
GB1331565A (en) 1973-09-26
US3773496A (en) 1973-11-20
US3796421A (en) 1974-03-12
FR2130796A5 (en) 1972-11-10
JPS4942201B1 (en) 1974-11-13
DE2007373A1 (en) 1971-08-26

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee