FR2194783A1 - Nitrogen contg steel - by adding nitrogen to oxygen during final blowing of melt - Google Patents

Nitrogen contg steel - by adding nitrogen to oxygen during final blowing of melt

Info

Publication number
FR2194783A1
FR2194783A1 FR7327265A FR7327265A FR2194783A1 FR 2194783 A1 FR2194783 A1 FR 2194783A1 FR 7327265 A FR7327265 A FR 7327265A FR 7327265 A FR7327265 A FR 7327265A FR 2194783 A1 FR2194783 A1 FR 2194783A1
Authority
FR
France
Prior art keywords
nitrogen
blowing
steel
oxygen
melt
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
FR7327265A
Other languages
French (fr)
Other versions
FR2194783B1 (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.)
SALZGITTER PEINE STAHLWERKE
Original Assignee
SALZGITTER PEINE STAHLWERKE
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 SALZGITTER PEINE STAHLWERKE filed Critical SALZGITTER PEINE STAHLWERKE
Publication of FR2194783A1 publication Critical patent/FR2194783A1/en
Application granted granted Critical
Publication of FR2194783B1 publication Critical patent/FR2194783B1/fr
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
    • 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
    • C21C5/32—Blowing from above
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)

Abstract

N2 is introduced into the molten steel by blowing very pure oxygen above the surface of the molten metal bath, by adding up to 6% gaseous nitrogen to the oxygen used for blowing during the last period of oxygen blowing. Pref. the N2 is added during the last third of oxygen, blowing via the lance. The distance between the orifice of the blowing lance and the surface of the bath is reduced, at least during a part of the nitrogen addn. Accurate control of the final nitrogen content of the molten steel. Rapid conversion of the nitrogen added to the molten steel. additional equipment is not required.
FR7327265A 1972-07-31 1973-07-25 Nitrogen contg steel - by adding nitrogen to oxygen during final blowing of melt Granted FR2194783A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722237498 DE2237498B2 (en) 1972-07-31 1972-07-31 Method for embroidering molten steel

Publications (2)

Publication Number Publication Date
FR2194783A1 true FR2194783A1 (en) 1974-03-01
FR2194783B1 FR2194783B1 (en) 1976-06-18

Family

ID=5852169

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7327265A Granted FR2194783A1 (en) 1972-07-31 1973-07-25 Nitrogen contg steel - by adding nitrogen to oxygen during final blowing of melt

Country Status (7)

Country Link
AT (1) ATA621873A (en)
BE (1) BE802933A (en)
DE (1) DE2237498B2 (en)
FR (1) FR2194783A1 (en)
IT (1) IT992669B (en)
LU (1) LU68045A1 (en)
NL (1) NL7310568A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2387290A1 (en) * 1977-04-11 1978-11-10 Union Carbide Corp PROCESS FOR THE NITROGENING OF STEELS WITH OXYGEN DURING THEIR DECARBURATION

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5417739A (en) * 1993-12-30 1995-05-23 Ltv Steel Company, Inc. Method of making high nitrogen content steel
DE102014112286A1 (en) 2014-08-27 2016-03-03 Thyssenkrupp Ag Method for producing an embroidered packaging steel
DE102014116929B3 (en) * 2014-11-19 2015-11-05 Thyssenkrupp Ag Method for producing an embroidered packaging steel, cold rolled flat steel product and apparatus for recrystallizing annealing and embroidering a flat steel product

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1066746A (en) * 1951-11-23 1954-06-09 Voest Ag Process for the production of an unstabilized steel rich in nitrogen and free from gas bubbles, intended for automatic lathes and similar machine tools

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1066746A (en) * 1951-11-23 1954-06-09 Voest Ag Process for the production of an unstabilized steel rich in nitrogen and free from gas bubbles, intended for automatic lathes and similar machine tools

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2387290A1 (en) * 1977-04-11 1978-11-10 Union Carbide Corp PROCESS FOR THE NITROGENING OF STEELS WITH OXYGEN DURING THEIR DECARBURATION

Also Published As

Publication number Publication date
LU68045A1 (en) 1973-09-26
DE2237498B2 (en) 1974-07-25
IT992669B (en) 1975-09-30
FR2194783B1 (en) 1976-06-18
ATA621873A (en) 1975-05-15
BE802933A (en) 1973-11-16
DE2237498A1 (en) 1974-02-14
NL7310568A (en) 1974-02-04

Similar Documents

Publication Publication Date Title
ES426785A1 (en) Process for production of stainless steel
AU466833B2 (en) Method for injecting a gaseous reacting agent into a bath of molten metal
FR2194783A1 (en) Nitrogen contg steel - by adding nitrogen to oxygen during final blowing of melt
YU39468B (en) Process for producing slag in the production of low phosphorous steel by means of annealing smelt pig-iron of various composition by means of oxygen
GB1085130A (en) Apparatus for lining metallurgical vessels, such as converters
FR2158140A1 (en) Steel making - by top and bottom blowing oxygen with a fluid contg hydrocarbons
GB973815A (en) Method of refining pig iron
FR2167520A1 (en) Rapidly decarburising ferro alloys - avoiding oxidation of the main alloying elements
GB1474220A (en) Process for producing fine diameter wire
JPS5265710A (en) Method of producing low phosphorus molten cast iron
GB1299397A (en) Improvements in or relating to processes for reducing the oxygen content of molten copper
GB1083491A (en) Continuous casting
FR2198998A1 (en) Discontinuously blowing oxygen in LD converters - to improve the interac-tion between the molten metal and the slag
ES399219A1 (en) Process for decarburization of steels
BE771219A (en) NOZZLE FOR TORCHES OR OXYGEN BLOWING LANCES
GB1364792A (en) Steel making converters
ES368445A1 (en) Process for the automatic control of the pig iron refining operation
GB1163705A (en) Oxygen Lance.
FR2154795A1 (en) Refining phosphorus rich cast irons - by blowing with an oxygen/lime powder suspension
FR2230732A1 (en) Controlling foaming of slag in steel refining - using values determined from off-gases
GB1233672A (en)
GB1310071A (en) Oxygen flushing pressure diecasting method
ZA739279B (en) Method of simultaneously controlling temperature and carbon content of molten steel at the end-point in oxygen top-blown converter
FR2134200A1 (en) Continuous metallurgical converter chamber - sub divided into deep and shallow bath zones
GB583775A (en) Improvements in the manufacture of iron and steel

Legal Events

Date Code Title Description
ST Notification of lapse