JPS5499030A - Regulating method for mn in molten steel - Google Patents

Regulating method for mn in molten steel

Info

Publication number
JPS5499030A
JPS5499030A JP556278A JP556278A JPS5499030A JP S5499030 A JPS5499030 A JP S5499030A JP 556278 A JP556278 A JP 556278A JP 556278 A JP556278 A JP 556278A JP S5499030 A JPS5499030 A JP S5499030A
Authority
JP
Japan
Prior art keywords
steel
alloy
grain size
undeoxidized
molten steel
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
JP556278A
Other languages
Japanese (ja)
Other versions
JPS5734330B2 (en
Inventor
Yozo Takemura
Iku Kato
Sadashi Ogino
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
Priority to JP556278A priority Critical patent/JPS5499030A/en
Publication of JPS5499030A publication Critical patent/JPS5499030A/en
Publication of JPS5734330B2 publication Critical patent/JPS5734330B2/ja
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
    • C21C7/06—Deoxidising, e.g. killing

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)

Abstract

PURPOSE:To regulate Mn in undeoxidized steel without yielding C in the steel by adding a high carbon Fe-Mn alloy of below a predetermined grain size to the steel during or after discharge. CONSTITUTION:A high carbon Fe-Mn alloy of an average grain size below 9.0 mm is added to undeoxidized steel during or after discharge. Since the alloy is of small grain size and light weight, it does not deeply penetrate into the molten steel and the whole Fe-Mn is rapidly heated with heat of the molten steel to carry out rapid reaction. Accordingly, the steel is subjected to little recarburizing, and the carbon contained in the alloy is converted into CO gas with oxygen in the undeoxidized steel and dispersed. Thus, the steel manufacturing yield is enhanced, and regulation of Mn can be carried out without recarburizing.
JP556278A 1978-01-20 1978-01-20 Regulating method for mn in molten steel Granted JPS5499030A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP556278A JPS5499030A (en) 1978-01-20 1978-01-20 Regulating method for mn in molten steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP556278A JPS5499030A (en) 1978-01-20 1978-01-20 Regulating method for mn in molten steel

Publications (2)

Publication Number Publication Date
JPS5499030A true JPS5499030A (en) 1979-08-04
JPS5734330B2 JPS5734330B2 (en) 1982-07-22

Family

ID=11614634

Family Applications (1)

Application Number Title Priority Date Filing Date
JP556278A Granted JPS5499030A (en) 1978-01-20 1978-01-20 Regulating method for mn in molten steel

Country Status (1)

Country Link
JP (1) JPS5499030A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4921318A (en) * 1972-06-21 1974-02-25
JPS51149115A (en) * 1975-06-18 1976-12-21 Japan Metals & Chem Co Ltd A molten metal treatment process

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4921318A (en) * 1972-06-21 1974-02-25
JPS51149115A (en) * 1975-06-18 1976-12-21 Japan Metals & Chem Co Ltd A molten metal treatment process

Also Published As

Publication number Publication date
JPS5734330B2 (en) 1982-07-22

Similar Documents

Publication Publication Date Title
JPS5499030A (en) Regulating method for mn in molten steel
ES8202593A1 (en) Method for preventing slopping during subsurface pneumatic refining of steel.
JPS52134487A (en) Facial scratch detection means for steel and iron material
JPS5360310A (en) Continuous annealing method for titanium and titanium alloy
JPS54127895A (en) Prevention of solidification of water-granulated slag
JPS5310303A (en) Promoting method for reaction of molten metal with slag by dispersion of metal
JPS5435813A (en) Controlling method for carbon content of reduced pellets
JPS5721744A (en) Apparatus for heat treatment at high temperature
JPS5237903A (en) Apparatus for blowing cooling gas into the quenching chamber of a coke dry quenching plant
JPS5249973A (en) Decreasing method of nox in boilr exhaust gas
JPS52146711A (en) Operation of converter
JPS51122697A (en) Process of polycarbonmonofluoride
JPS5591905A (en) Using method for reducing agent in rotary kiln
JPS52146718A (en) Method and raw material for smelting copper scrap
JPS53125906A (en) Method of sintering iron ores
JPS54112214A (en) Production and device for high-tensile and high-modulus graphite fibers
JPS5324302A (en) Manufacture of coke
JPS569325A (en) Atmospheric gas for heat treatment furnace
JPS575821A (en) Method and equipment for bright cooling of high temperature metal strip
GB1552573A (en) Process for the oxidation of harmful material in aqueous solution
JPS51115211A (en) Continuous heat treatment equipment
JPS525612A (en) Process for regulating the temperature of blowinout at a converter
JPS5381417A (en) Vacuum degassing method for molten steel
Hermosilla et al. Oxidation(of Steel Ingots) in Soaking Pits
Lyutyi Saturation of alloy steel sheet with nitrogen during bright annealing