JPS55115914A - Refining method of high chromium steel - Google Patents

Refining method of high chromium steel

Info

Publication number
JPS55115914A
JPS55115914A JP2381279A JP2381279A JPS55115914A JP S55115914 A JPS55115914 A JP S55115914A JP 2381279 A JP2381279 A JP 2381279A JP 2381279 A JP2381279 A JP 2381279A JP S55115914 A JPS55115914 A JP S55115914A
Authority
JP
Japan
Prior art keywords
steel
molten steel
decrease
blowing
blowing lance
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
JP2381279A
Other languages
Japanese (ja)
Other versions
JPS6124452B2 (en
Inventor
Masayuki Taga
Seiichi Masuda
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
Sumitomo Metal Industries Ltd
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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP2381279A priority Critical patent/JPS55115914A/en
Publication of JPS55115914A publication Critical patent/JPS55115914A/en
Publication of JPS6124452B2 publication Critical patent/JPS6124452B2/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
    • 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

Landscapes

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

Abstract

PURPOSE:To prevent the decrease in steel bath temperature and perform production by fusion of high Cr-steel economically by lowering the O2 amount from the top blowing lance according to the C-concentration decrease in the molten steel in an oxygen top-blowing converter and decarbonizing the molten steel while preventing the Cr oxidation in the molten steel therein and yet letting the CO produced by burnt by excess O2. CONSTITUTION:At the time of refining high Cr-steel by supplying inert gas through the bottom tuyeres of the oxygen top-blowing converter and O2 through the top- blowing lance respectively, the O2 amount is lowered according to the decrease of the C concentration in the molten steel and the molten steel is decarbonized and refined while the Cr oxidation therein is being prevented. Further, the CO produced is burnt by the excess O2 from the top-blowing lance, whereby the steel bath temperature is maintained.
JP2381279A 1979-02-28 1979-02-28 Refining method of high chromium steel Granted JPS55115914A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2381279A JPS55115914A (en) 1979-02-28 1979-02-28 Refining method of high chromium steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2381279A JPS55115914A (en) 1979-02-28 1979-02-28 Refining method of high chromium steel

Publications (2)

Publication Number Publication Date
JPS55115914A true JPS55115914A (en) 1980-09-06
JPS6124452B2 JPS6124452B2 (en) 1986-06-11

Family

ID=12120744

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2381279A Granted JPS55115914A (en) 1979-02-28 1979-02-28 Refining method of high chromium steel

Country Status (1)

Country Link
JP (1) JPS55115914A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2501236A1 (en) * 1981-03-03 1982-09-10 Sumitomo Metal Ind PROCESS FOR REFINING STEEL WITH HIGH CHROMIUM CONTENT
JPS62130210A (en) * 1985-11-30 1987-06-12 Kawasaki Steel Corp Production of stainless steel
CN111575431A (en) * 2020-05-22 2020-08-25 山东钢铁股份有限公司 Method for increasing CO content of converter gas

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2501236A1 (en) * 1981-03-03 1982-09-10 Sumitomo Metal Ind PROCESS FOR REFINING STEEL WITH HIGH CHROMIUM CONTENT
DE3204632A1 (en) * 1981-03-03 1982-09-16 Sumitomo Metal Industries, Ltd., Osaka METHOD FOR REFRESHING STEEL WITH A HIGH CHROME CONTENT
JPS62130210A (en) * 1985-11-30 1987-06-12 Kawasaki Steel Corp Production of stainless steel
JPH0154409B2 (en) * 1985-11-30 1989-11-17 Kawasaki Steel Co
CN111575431A (en) * 2020-05-22 2020-08-25 山东钢铁股份有限公司 Method for increasing CO content of converter gas

Also Published As

Publication number Publication date
JPS6124452B2 (en) 1986-06-11

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