FR2276389A1 - Production of nitrogen contg. austenitic steels - by electroslag melting under pressure in an inert atmosphere - Google Patents

Production of nitrogen contg. austenitic steels - by electroslag melting under pressure in an inert atmosphere

Info

Publication number
FR2276389A1
FR2276389A1 FR7520363A FR7520363A FR2276389A1 FR 2276389 A1 FR2276389 A1 FR 2276389A1 FR 7520363 A FR7520363 A FR 7520363A FR 7520363 A FR7520363 A FR 7520363A FR 2276389 A1 FR2276389 A1 FR 2276389A1
Authority
FR
France
Prior art keywords
under pressure
content
production
austenitic steels
inert atmosphere
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.)
Granted
Application number
FR7520363A
Other languages
French (fr)
Other versions
FR2276389B1 (en
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.)
Inteco Internationale Techinsche Beratung GmbH
Original Assignee
Inteco Internationale Techinsche Beratung GmbH
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
Priority claimed from AT975474A external-priority patent/AT333327B/en
Application filed by Inteco Internationale Techinsche Beratung GmbH filed Critical Inteco Internationale Techinsche Beratung GmbH
Publication of FR2276389A1 publication Critical patent/FR2276389A1/en
Application granted granted Critical
Publication of FR2276389B1 publication Critical patent/FR2276389B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/16—Remelting metals
    • C22B9/18—Electroslag remelting
    • 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
    • C21C7/0081—Treating and handling under pressure
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

Austenitic steels with N contents higher than those which are max. soluble at atmospheric press., having improved proof strength and tensile strength, are produced by using the electroslag melting process under pressure in an inert atm. The electrodes have a uniform N and alloying content over their cross-section and length, and the melt will not loose or pick up nitrogen. Melting is effected by using an operating pressure P above the slag, which corresponds to the average N content of the electrode and is given by the ratio N2/N2o where N is the average N content of the electrodes and No is the max. soluble N content at atmos. press.
FR7520363A 1974-06-27 1975-06-27 Production of nitrogen contg. austenitic steels - by electroslag melting under pressure in an inert atmosphere Granted FR2276389A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT535174 1974-06-27
AT975474A AT333327B (en) 1974-12-05 1974-12-05 PROCESS FOR PRODUCING AUSTENITIC STEELS WITH INCREASED NITROGEN CONTENT

Publications (2)

Publication Number Publication Date
FR2276389A1 true FR2276389A1 (en) 1976-01-23
FR2276389B1 FR2276389B1 (en) 1979-07-13

Family

ID=25602099

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7520363A Granted FR2276389A1 (en) 1974-06-27 1975-06-27 Production of nitrogen contg. austenitic steels - by electroslag melting under pressure in an inert atmosphere

Country Status (3)

Country Link
DE (1) DE2528588C2 (en)
FR (1) FR2276389A1 (en)
IT (1) IT1039425B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2387713A1 (en) * 1977-04-22 1978-11-17 Acos Finos Eletrometal METHOD OF MANUFACTURING METAL ELECTRODES INTENDED FOR THE REFUSION AND PRODUCTION OF A METAL INGOT
EP0123054A1 (en) * 1983-03-24 1984-10-31 Fried. Krupp Gesellschaft mit beschränkter Haftung Stainless chromium steel and process for the manufacture thereof

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2628848C3 (en) * 1976-06-26 1981-06-25 Fried. Krupp Gmbh, 4300 Essen Process for the nitrogenization of high-alloy steels during electroslag remelting
DE3426086A1 (en) * 1984-07-14 1986-01-23 Fried. Krupp Gmbh, 4300 Essen METHOD FOR PRODUCING METAL SEMI-FINISHED PRODUCTS
DE3721945A1 (en) * 1986-10-27 1988-05-19 Inteco Int Techn Beratung Method and appliance for operating a pressurised electroslag remelting plant
DE3940438C1 (en) * 1989-12-07 1991-05-23 Vereinigte Schmiedewerke Gmbh, 4630 Bochum, De
DE10012837C1 (en) 2000-03-16 2001-07-26 Vsg En & Schmiedetechnik Gmbh Production of steel alloy with a precisely defined nitrogen content comprises adding gaseous alloying component and inert gas to atmosphere in vessel with adjustment of pressure and concentration of the inert gas and the alloying component
DE102020202736A1 (en) 2020-03-04 2021-09-09 Mahle International Gmbh Metallic material

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1118406B (en) * 1956-04-07 1961-11-30 Dr Walter Dannoehl Process for the production of metallic objects by continuous melting down in the casting mold
AT233752B (en) * 1961-10-26 1964-05-25 Boehler & Co Ag Geb Process for the production of ingots from steel and metal alloys susceptible to segregation
AT277298B (en) * 1963-05-24 1969-12-29 Boehler & Co Ag Geb Process for the production of steels with increased nitrogen contents using the electroslag remelting process
US3344839A (en) * 1963-11-28 1967-10-03 Soudure Electr Autogene Process for obtaining a metallic mass by fusion
DE1483647C3 (en) * 1965-06-11 1974-09-26 Stahlwerke Suedwestfalen Ag, 5930 Huettental-Geisweid Heating for a melting furnace in a device for the production of nitrogen-alloyed ingots

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2387713A1 (en) * 1977-04-22 1978-11-17 Acos Finos Eletrometal METHOD OF MANUFACTURING METAL ELECTRODES INTENDED FOR THE REFUSION AND PRODUCTION OF A METAL INGOT
EP0123054A1 (en) * 1983-03-24 1984-10-31 Fried. Krupp Gesellschaft mit beschränkter Haftung Stainless chromium steel and process for the manufacture thereof

Also Published As

Publication number Publication date
FR2276389B1 (en) 1979-07-13
IT1039425B (en) 1979-12-10
DE2528588A1 (en) 1976-02-26
DE2528588C2 (en) 1990-05-10

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Legal Events

Date Code Title Description
AR Application made for restoration
BR Restoration of rights
ST Notification of lapse